CN105567918B - The induction heating of spring - Google Patents
The induction heating of spring Download PDFInfo
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- CN105567918B CN105567918B CN201410545456.6A CN201410545456A CN105567918B CN 105567918 B CN105567918 B CN 105567918B CN 201410545456 A CN201410545456 A CN 201410545456A CN 105567918 B CN105567918 B CN 105567918B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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Abstract
A kind of equipment for harden cylindrical helical spring or tapered coil spring.This equipment has rotating support system and induction heating system.Rotating support system is designed to allow it to be inductively heated system heating while being carry for supporting spring.Induction heating system includes the induction coil system for having coil system.Coil system has a region spaced apart, is designed for receiving spring and heats spring when spring is supported in rotating support system.
Description
Invention field
Present invention relates generally to the quench hardenings of metal spring, more particularly to make the metallic hard of spring with induction heating technology
Change.
Background of invention
Metal quench hardening technique is the master schedule being used in spring manufacture.A kind of common quench hardening
Technique includes a traditional atmosphere heating furnace.Such quench hardening process is very slow.Spring can use various metal (examples
Such as stainless steel, carbon steel, steel alloy) shape.The metal of spring can achieve spy when properly being hardened and being tempered
Fixed metallurgy parameter, such as hardness and microstructure.
With traditional atmosphere heating furnace harden spring when, be first on shelf spring put in heating furnace
One section of specific time is kept under certain temperature.Then, spring is taken out to put into oil or other quenching liquids and goes to quench.At this
After process of initially hardening, the hardness of spring is generally higher than to be achieved.Therefore, spring will generally undergo one and be tempered
Journey, until spring is made to reach required physical property.When processed appropriate, certain crystalline textures of steel are changed spring
Becoming band, there are many tempered martensites of dissolution carbide, thus can provide required spring center portion structure and required bullet
Spring surface hardness.
Another technique for the spring that hardens is induction heating.Induction heating process is the conductor material by inducing spring
Electromagnetic field is generated in material to occur.Eddy current can be generated in conductor material, and the resistance of conductor material will lead to Joule heating.
If desired, induction heating can be used for for steel being heated to its fusing point, this is enough to make steel product austenitizing.
Compared with being heated with traditional atmosphere heating furnace, induction heating technology can shorten time heating cycle, induction heating
Technique can also simplify the material mover of spring, it is also possible to the automation that spring material is moved is realized during hardening.Although
Induction heating has some advantages compared with traditional atmosphere heating furnace, but the induction heating of spring also some problems, such as spring
Be evenly heated in whole length, the holding of the overheat of both ends of the spring and induction coil efficiency the problems such as.
Harden the standing state of technology in view of spring, it is necessary to improvement is hardened technical process, be allowed to with traditional atmosphere
Heating furnace harden compared to can reduce labor intensity and when consumption, and spring can be uniformly heated up in the whole length of spring.
Summary of the invention
The present invention is with a kind of novel induction heating technology process come the metal spring that hardens.Technique of hardening of the invention
The shortcomings that can overcoming in the past for line around the induction heating technology of spring.Present invention is more particularly directed towards straight cylinder-shaped compression springs
(such as cylindrical helical spring, etc.) or conical compression spring, still, technique of hardening of the invention can also be used for hardening it
The spring of its type.Technique of hardening of the invention includes heating spring with induction heating method, is heated with traditional atmosphere
Furnace carries out heating and compares, and induction heating can be such that spring heated more uniform and heating time shortens dramatically, and this work of hardening
Skill can make the metallographic structure of spring harden what technique was hardened equivalent to or better than the tradition by using traditional atmosphere heating furnace
The metallographic structure of spring.
At a non-limiting aspect of the invention, a kind of novel induction coil construction is provided.This induction coil one
As be the cooling induction coil of liquid, but this induction coil can also be cooled down with other medium.In a non-limit of the invention
In property embodiment processed, induction coil is located at the two sides of spring, along at least part longitudinal length of spring.It should be able to manage
Solution, in addition to two sides, can also position the coil of induction coil in multiple orientation around spring.Generally, along spring
At least part of longitudinal length is placed into each induction coil substantially constant spacing therebetween.Typically, along spring
Entire longitudinal length each induction coil be placed into have substantially constant spacing therebetween.The induction of a variety of different configurations can be used
Coil heats spring.In a kind of non-limiting design, induction coil has generally rectangular or rectangular shape.At this
In another non-limiting embodiment of invention, induction coil has a circle or multiturn, and the internal diameter of circle reduces.With such construction
When, along at least two circle of at least part longitudinal length positioning of spring, and in that side antithesis of spring along spring
At least one circle of at least part longitudinal length positioning.It will be understood that the induction coil of any construction, a) circle of the every side of spring
Number can be identical or different, b) length of the circle on one or more longitudinal direction side positions of spring or multi-turn can be identical or not
Together, c) circle on one or more longitudinal direction side positions of spring or the length of multi-turn can be identical or different, d) circle or more
The length of circle can greater than, equal to or less than spring longitudinal length, e) along the longitudinal length of coil, a circle or multi-turn it is disconnected
Face area can be constant or variation, f) two circles or the cross-sectional area of multi-turn can be identical or different, g) along spring
The distance of longitudinal length, a circle or multi-turn to spring can be it is constant or variation and/or h) along the major part of spring or
Entire longitudinal length, two circles or multi-turn may be in same plane or in parallel plane.In the non-limit of another of the invention
In property embodiment processed, spring can be heated with more than one induction coil.This novel induction coil construction can make spring
The eddy current generated during induction heating pools the heating surface (area) (HS " beam " of two high concentrations, to generate to spring high
Effect heating.This heating effect not only uniformity but also promptly can heat spring together with the natural heat-conducting of spring itself.
At another and/or alternative non-limiting aspect of the invention, it can make spring during being inductively heated
It is slowly rotated with.It can make spring pivotal in any way.The revolving speed of spring, is typically below during induction heating
100rpm is typically lower than 50rpm, more typically about 0.25-40rpm, more about 1-30rpm.?
The revolving speed of spring can constant or variation in spring heating process.It has been found that slower spring turns during induction heating
Speed can make spring have more appropriate heat distribution.It has been found that too high spring revolving speed can make bullet during induction heating
The overheating of end windings and parts of spring.Certain parts that the end that this overheat can lead to the spring during induction heating is respectively enclosed are fused to
Together and/or inadvertently change the microstructure of spring.In addition, it has also been discovered that in this heating process, in spring heating and
Carry spring in rotation process can also prevent or prevent spring sagging because of own wt and deform.It is non-in of the invention one
In restricted embodiment, in spring heating process, with roller turn spring.One or more springs are placed in two or more
On roller.Roller is usually the institute made of the material (such as ceramics, etc.) that will not be heated by one or more induction coils
Hot spot will not be generated on springs one or more in the heating process of one or more springs.It will be understood that it can be used
Its material makes one or more parts of roller.When using roller, spring is usually to be placed on the top surface of roller simultaneously
It is carry, but not required certain such by roller in rotation process being heated.Roller can be used for along the vertical of roller
To the mobile one or more springs of length, but do not require certain in this way, can control the revolving speed of one or more rollers and/or turn
To being distal to the circle or multi-turn of induction coil to shift near spring and/or to move, and/or move between them, but do not require
It is certain such.
At another of the invention and/or interchangeable non-limiting aspect, when heating spring the one of induction coil
Circle or multi-turn are located in above or below the central axis of spring.It has been found that such a positioning of induction coil can be with
Heating more evenly is provided to spring.Generally, make the one of induction coil to enclose or the central axis of multi-turn is to spring center axis
Bias be spring diameter 5-50%, be the about 10-45% of spring diameter typically, be the pact of spring diameter more typically
10-40%.
At more another and/or interchangeable non-limiting aspect of the invention, induction coil can be configured to make
Spring is during heating along the longitudinal length continuous moving of induction coil, in order to realize the automation heating of spring.It can
Multiple springs are served roller with a kind of index device (indexing arrangement) and located them in roller by selection of land
On.Such device is easy to implement the automation of spring heating.
It is design in still another and/or interchangeable non-limiting aspect, the roller for rotation spring of the invention
At spring capable of being made to move along the longitudinal length of roller with different rotational speeds, but do not require it is certain so.
It can be moved in another of the invention and/or interchangeable non-limiting aspect, each roller for rotation spring
It is dynamic and toward or away from one another, but do not require it is certain so.In such arrangement, each roller can be designed to be able to remote mutually
It can be by being fallen between them from order to spring.For example, spring can be fallen after being heated by falling between roller
Enter and quench liquid pool, but does not require certain such.It will be understood that can give one or more springs quenchings (with quenching with various ways
Fiery liquid sprays, investment quenches liquid pool, etc.).
In general, there are two Basic Ways for induction heating.One is carrying out surface heating with the electric current of upper frequency.
In this heating method, spring surface is the region that heat is concentrated.Heat while induction fever only occurs in spring surface
It is transmitted to the entire section of spring and reaches comprehensive heating.This heating means are faster.Second approach is to use low-frequency electrical
Stream carries out depth penetrates heating or surface or less and heats.This heating method is usually relatively slow but more comprehensive, because it can make
The entire section of spring simultaneously heats up.For the heat treatment of spring, the following heating method of surface heating method specific surface is more
Properly, because it hardly heats spring " center portion ".
At another of the invention and/or interchangeable non-limiting aspect, liquid pool is quenched to being heated with one
Spring is partially or even wholly quenched.In a non-limiting embodiment of the invention, quenching liquid pool is placed on roller
Lower section and being designed to can receive be heated by the spring that falls between two rollers or from the end of roller.It quenches
Fiery liquid is usually oil or contains oil, but can also use other quenching liquid.
At another of the invention and/or interchangeable non-limiting aspect, it is heated with a temperature monitoring monitoring
The temperature of spring.
In another of the invention and/or interchangeable non-limiting aspect, the structure of the induction coil for the spring that hardens
Make generally have one of following features or it is several or all.
When heating spring with single induction coil, the shape of induction coil generally has the " square of mellow and full (rounded)
The configuration of shape " or " square rectangle ".When induction coil has more than one loop, induction coil has reduced internal diameter, and
Each coil segment is generally in same level plane.
The cooling water inlet of induction coil is usually the side for being positioned to be offset to induction coil, so that it does not interfere to feel
Answer the effective heated length of maximum of coil.
Effective heated length (the i.e. permission of induction coil length for spring being placed on that in-between section of induction coil
Degree) generally do not include induction coil non-mellow and full part.
When synchronously heating multiple springs simultaneously with induction coil, the spacing between the end face of different springs should be bullet
At least about 0.25-5 times of spring wire diameter, to avoid or prevent undesirable spring one end or both ends from overheating.
The distance on surface of interior loop for being heated the side of spring to induction coil should be wire of spring diameter
About 0,25-3 times, generally, the distance of the interior loop of two sides of spring to induction coil answer it is roughly the same, to accomplish
Spring is evenly heated.
Spacing between the non-mellow and full induction loop part of two of induction coil along their own entire longitudinal direction
Length should keep substantially constant, and the spacing between the non-mellow and full induction loop part of two located adjacents should be non-mellow and full
0.01-1 times of mean breadth (being diameter for pipe) of induction loop part.
When heating spring with single induction coil, the number of the loop of induction coil typically depends on being heated
The wire diameter of spring and 1-5 times of the diameter should be about.Biggish wire of spring diameter may require more
Induction coil loop number
A non-limiting purpose of the invention is to provide the induction heating apparatus that can improve the heating of spring.
Of the invention another and/or alternatively non-limiting purpose, which are to provide one kind and can heat, is supported in two
Or the induction heating apparatus of one or more springs on multiple rollers.
It includes at least two coiler parts that another of the invention and/or alternatively non-limiting purpose, which are to provide a kind of,
Induction heating apparatus, the two coiler parts are to be positioned to parallel to each other and be designed to fixed for one or more springs
Position is between such parallel section and is designed to heat one be positioned at least partially between such parallel section
A or multiple springs.
Another of the invention and/or alternatively non-limiting purpose are to provide one kind can be in spring heating process
Control the induction heating apparatus of the revolving speed of spring.
It includes such induction coil structure that another of the invention and/or alternatively non-limiting purpose, which are to provide a kind of,
The induction heating apparatus of shape, that is, induction coil configuration can be used for controlling spring to one or more of this induction heating apparatus
The distance of a coiler part, so as to properly heat spring.
Another of the invention and/or alternatively non-limiting purpose, which are to provide one kind, to be kept during heating
Two or more springs have the induction heating apparatus of enough distances from each other, to will not have unfavorable shadow to the heating of spring
It rings.
It includes as one or more that another of the invention and/or alternatively non-limiting purpose, which are to provide a kind of,
The induction heating apparatus of induction coil, that is, this induction coil has generally " mellow and full rectangular or square ", " square rectangle
" or " square " configuration.
Of the invention another and/or alternatively non-limiting purpose are to provide a kind of including such induction coil
Induction heating apparatus, that is, this induction coil has more than one loop, and such induction coil has reduced internal diameter,
And all coils section is all generally in same level plane.
Of the invention another and/or alternatively non-limiting purpose are to provide a kind of including such induction coil
Induction heating apparatus, that is, this induction coil has the cooling water inlet for the side for being generally positioned to be offset to induction coil, from
The effective heated length of maximum without interfering induction coil.
Of the invention another and/or alternatively non-limiting purpose are to provide a kind of including such induction coil
Induction heating apparatus, that is, effective heated length of this induction coil does not generally include non-mellow and full part.
Another of the invention and/or interchangeable non-limiting purpose are to provide such a induction heating apparatus,
In multiple spring heads can be positioned adjacently into their end is made to have sufficiently large spacing from each other, to can avoid or anti-
Only undesirable spring one end or both ends overheat.
Of the invention another and/or alternatively non-limiting purpose are to provide a kind of including such induction coil
Induction heating apparatus, that is, this induction coil may be positioned such that being heated spring has a sufficiently large distance, so as to appropriate
Heat spring in ground.
Of the invention another and/or alternatively non-limiting purpose are to provide a kind of including such induction coil
Induction heating apparatus, that is, this induction coil may be positioned such that being heated spring has uniform distance, so as to properly heat
Spring.
Another of the invention and/or interchangeable non-limiting purpose are to provide such a induction heating apparatus, use
The remnants that the residual stress of the spring of such induction heating apparatus processing is lower than the spring handled with traditional heating process are answered
Power.
These and other objects and advantage of the invention will display in the description carried out below in conjunction with attached drawing.
Detailed description of the invention
Each attached drawing is referred now to, they illustrate several different embodiments, and the present invention can take shown in it
Physical form, certain parts and part structure arrangement, in each attached drawing:
Fig. 1 is the side view of a non-limiting device for handling spring of the invention；
Fig. 2 is the enlarged partial view of Fig. 1, illustrates a kind of unrestricted spring heating device of the invention；
Fig. 3 is the cross-sectional view along the line 3-3 in Fig. 1；
Fig. 4 is analogous to the cross-sectional view of Fig. 3, but two rollers are by far from so that spring can pass through therebetween；
Fig. 5 is the cross-sectional view along the line 5-5 in Fig. 1；
Fig. 6 is analogous to the cross-sectional view of Fig. 5, but two rollers are by separate；
Fig. 7 is the perspective view of the one of the invention non-limiting induction coil that can be used for heating spring；
Fig. 8 is that of the invention another can be used for heating the perspective view of the non-limiting induction coil of spring；And
Fig. 9 is a curve graph, it gives relationship of the residual stress to spring surface layer depth of the spring to harden, and
Putting together with this relationship of traditional technique generation of hardening for technique generation of hardening of the invention is made comparisons.
The detailed description of non-limiting embodiment of the invention
Refer now to each attached drawing, one of the various expressions be intended merely to illustrate non-limiting embodiment of the invention and
It is not limited to the present invention.Fig. 1-6 illustrate of the invention one for heat and the non-limiting technique for the spring that hardens dress
Set 100.Process unit 100 is illustrated as one for heating and the batch processing device for one or more springs that harden.It should be able to manage
Process unit 100 can be constructed to be permeable to a kind of continuous non-batch mode heating and the spring that hardens, but not require certain by solution
So.The spring that can be heated and be hardened with process unit 100 is typically cylindrical helical spring or honeycombed (cone) spiral shell
Spring is revolved, the present invention will be described specifically to these springs below, it will be understood that can also heat and other types of hardening
Spring.It should also be understood that the heating of process unit 100 and harden metal ear of maize or pipe can also be used, as long as they have substantially
Upper circular section configuration is just.The cylindrical helical spring or tapered auger bullet that can be heated and be hardened with process unit 100
Spring has substantially unchanged shape, constant section configuration, and/or the section of major part or entire longitudinal length along them
Area, but do not require certain such.At least part of cylindrical helical spring or tapered coil spring is with can be incuded
The conductive material forming for the electromagnetic field heating that coil generates.Typically, cylindrical helical spring or tapered coil spring
It is largely or entirely to use to be shaped by the conductive material that the electromagnetic field that induction coil generates heats.Cylindrical helical spring or
The thickness (diameter) of the wire of the length and/or cylindrical helical spring or tapered coil spring of tapered coil spring is
It is unrestricted.In general, the thickness of the wire of cylindrical helical spring or tapered coil spring is long along their longitudinal direction
Degree is constant, but is not required certain such.Two or more cylindrical helical springs or tapered coil spring together by
Heated with process unit 100 and when hardening, these cylindrical helical springs or tapered coil spring generally have identical length,
Shape, section configuration, cross-sectional area and wire thickness, but do not require certain such.
Referring to Fig.1, the process unit 100 illustrated includes sensing device 200, quenching unit 700 and control device 800.
Sensing device 200 includes technique frame 210, and each composition of sensing apparatus is partially installed on thereon.Technique frame 210 has been illustrated as
The leg 220 being located in ground G.Each leg is mountable on the ground, but does not require certain such.Technique frame 210 is illustrated as
There is the support rod 230 being connected between each leg, to enhance the rigidity of technique frame 210.It will be understood that technique frame 210
Construction be non-limiting.The durable material that technique frame 210 is generally available such as metal is made, but can also use other materials
Material.The material of technique frame 210 can be solid material, tubular material, etc..Technique frame 210 includes being connected to each leg
Top beam 240.
As illustrated in fig. 1 and 2, a coil supports and rotation system 300 are connected to the top beam of technique frame 210.It should be able to manage
Solution, does not require coil supports and rotation system 300 to be centainly connected to technique frame 210.Coil supports and rotation system 300 illustrate
For there are two end plates 310 and 312, they are connected to the top beam of technique frame 210.Pairs of roller branch is installed on each end plate
Hold leg 320 and 322,330 and 332.These roller supporting legs are rotatably supported two rollers 340,342.The two rollers
It is positioned to parallel to each other, and the longitudinal axis of each roller is generally in same level plane, but does not require certain such.
Can be made with one or more driving device M two rollers or in which one of rotation.Availability control unit 800 controls two rollers
One or both of revolving speed and/or steering.In general, two roller diameters are identical, revolving speed is also identical, but does not require certain such.
As illustrated in fig. 1 and 2, for two rollers apart from one another by a distance, this enables them to hold cylindrical helical together
Spring 400,410.It is enterprising once one or more cylindrical helical springs or tapered coil spring can be placed on to two rollers
Row processing.The length of roller, length, specification and the weight of spring, the size and configuration of induction coil 500 all will dominate same
The maximum number of primary heatable spring.
As illustrated in fig. 1 and 2, two cylindrical helical springs are placed on two rollers and are carry by the outer surface of roller.
Two springs of diagram have substantially the same length, identical wire specification and identical section configuration and area, but not
It is required that certain such.When there is more than one spring to be placed on roller, between the end that should generally make two springs head to head
There is a distance, does not interfere with the correct heating of the two in this way.The spacing of three or more springs on roller need not
It is identical, but a minimum spacing should be kept between spring.In general, when synchronously heating multiple springs simultaneously on roller, two
The spacing of the end of different springs should be at least 0.25 times of the wire diameter of that most thick spring of wire, can prevent in this way
Only undesirable spring one end or both ends overheat.Typically, the spacing of the end of two different springs should be at least metal
0.5 times of the wire diameter of that most thick spring of silk, more typically, should be at least the gold of that most thick spring of wire
Belong to 1 times of silk diameter, even more typically, 2 times of the wire diameter of that most thick spring of wire should be at least, it is very typical
Ground should be at least 3 times of the wire diameter of that most thick spring of wire, also more very typically, should be at least wire
4 times of the wire diameter of that most thick spring.Maximum distance between spring tip is non-limiting.
Referring now to Fig. 2 with 3, one or more cylindrical helical springs on roller are to be positioned in induction coil 500
Two coil legs 510,512 between.Coil leg 510,512 is generally parallel to each other.Also, each coil leg has one big
Longitudinal axis on body in same plane, but do not require certain such.As shown in Fig. 2, the longitudinal axis of two rollers
Horizontal plane is substantially parallel to the horizontal plane of the longitudinal axis of coil leg 510,512.Such arrangement can ensure that coil leg
510, on the axis of 512 central axis for being aligned in the cylindrical helical spring that one is parallel on roller.By several cylinders
When shape helical spring positions and is supported on two rollers, the longitudinal axis of two coil legs can be positioned higher than or be lower than or
Maintain an equal level in the longitudinal centre line of cylindrical helical spring.As shown in figure 3, being positioned in each cylindrical helical spring and being supported on two
When on a roller, the longitudinal axis of two coil legs is to be oriented to be in same with the longitudinal centre line of cylindrical helical spring
Highly.
To accomplish being evenly heated for cylindrical helical spring, one or more cylindrical helical springs on roller should be controlled
Outer surface to coil leg 510,512 distance.In general, the outer surface of cylindrical helical spring to coil leg 510,512 away from
From Ying Xiangtong, as shown in Figure 3.In general, the distance of two coil legs of the outer surface of cylindrical helical spring to induction coil is answered
It is at least about 0.25 times of the wire diameter of spring.The spacing of two coil legs is generally dependent on the straight of cylindrical helical spring
The diameter of diameter and/or its wire.There is no constant section configuration and/or section along its longitudinal length or axis for those
The spring of area can customize the shape of induction coil, to keep having appropriate spacing between the outer surface of spring and induction coil.
As such, spring of different shapes can be adapted to adjustable induction coil.In general, in most of length of spring, bullet
There should be constant spacing between spring outer surface and induction coil；Typically, at least about 70% length of spring, spring appearance
There should be constant spacing between face and induction coil；More typically, at least about 75% length of spring, spring outer surface and
There should be constant spacing between induction coil；Even more typically, at least about 80% length of spring, spring outer surface and sense
Constant spacing should be had by answering between coil；Even typically, at least about 85% length of spring, spring outer surface and induction
There should be constant spacing between coil；More very typically, at least about 90% length of spring, spring outer surface and the line of induction
There should be constant spacing between circle；Also more very typically, at least about 95% length of spring, spring outer surface and the line of induction
There should be constant spacing between circle；Most very typically, at least about 96~100% length of spring, spring outer surface and sense
Constant spacing should be had by answering between coil.Typically, the outer surface of cylindrical helical spring is between the coil leg of induction coil
Away from should be about 0.25~10 times of cylindrical helical spring wire diameter；More typically, the outer surface of cylindrical helical spring
Spacing to the coil leg of induction coil should be about 0.25~5 times of cylindrical helical spring wire diameter；Even more typically,
The spacing of coil leg of the outer surface of cylindrical helical spring to induction coil should be cylindrical helical spring wire diameter
About 0.5~3 times；Very typically, the spacing of coil leg of the outer surface of cylindrical helical spring to induction coil should be cylindrical
About 0.5~2 times of helical spring wire diameter；Also more very typically, the outer surface of cylindrical helical spring is to induction coil
The spacing of coil leg should be about 1~2 times of cylindrical helical spring wire diameter.
Shape for heating the induction coil for the one or more cylindrical helical springs being placed on roller is unrestricted
Property.Fig. 2 and 7 illustrates a kind of non-limiting configuration of an induction coil for use in the present invention.Fig. 8, which is illustrated, can be used for
The non-limiting configuration of another kind of an induction coil of the invention.In every kind of induction coil configuration of the diagram of Fig. 2,7 and 8,
It is all that two coil legs of load coil are positioned to parallel to each other.It has been found that this parallel arrangement of coil leg can
Each cylindrical helical spring being located on roller is uniformly heated.
Referring now to Fig. 2 with 7, induction coil 500 includes two coil legs, 510,512, two spacer blocks 520,522, one
The connection leg 540,542 of a end 530, two, each connection leg have respective connecting plate 550,552.Connecting plate 550,552 designs
At an electric power and cooling fluid source 600 is connected to, as illustrated in fig. 1 and 2.There is through-hole 560,562 on connecting plate 550,552,
It is used to be connected to the connecting base plate 610,612 on electric power and cooling fluid source 600.Induction coil is generally with conductive material system
At such as, but not limited to copper.Induction coil is usually tubulose to allow to allow cooling fluid to exist when electric current flows through induction coil
Flowing is in pipe to cool down pipe.Spacer block 520,522 is usually to be made of non-conducting material, such as, but not limited to ceramic material.
The shape and size of end 530 and connection leg 540,542 are non-limiting.The section configuration and section of coil leg 510,512
Area is also non-limiting.Generally, the section configuration of coil leg 510,512 and cross-sectional area are phases along its longitudinal length
It is same and constant, but do not require certain such.The coil leg section configuration of diagram is automatic adjustment, it is understood, however, that,
Other section configurations (such as ovate, rectangular, rectangle, polygon, etc.) can also be used.
Referring now to Fig. 8, induction coil 900 is the induction coil of a double back circle, and induction coil shown in Fig. 2 and 7
500 be the induction coil of single loop.Induction coil 900 includes distance between inner ring leg 910,912, outer ring leg 920,922, four circles
Respectively there are connecting plate 960,962 in maintainance block 930,932,934,936, the middle section 944, two of end 940,942, one
Connection leg 950,952.Connecting plate 960,962 is designed to that an electric power and cooling fluid source 600 can be connected to.Connecting plate packet
Through-hole 970,972 is included, is used to be connected to the connecting base plate 610,612 on electric power and cooling fluid source 600.Incude for making
The material of coil 900 is similar to discussed above for making the material of induction coil 500.Each maintainance block of diagram is for protecting
The interval between inner ring leg and outer ring leg is held, it is understood, however, that, it can also keep interior with one or more spacing maintainance blocks
The spacing of outer ring leg or the interval for keeping two leg of inner ring.Inner ring leg and outer ring leg are illustrated as parallel to each other.Inner ring leg and outer ring
The section configuration and cross-sectional area of leg are non-limiting.The section configuration and cross-sectional area of inner ring leg and outer ring leg are vertical along it
Answered to length it is substantially the same and constant, but do not require it is certain so.The longitudinal center axis of inner ring leg and outer ring leg should be substantially
It is upper to be in same plane, but do not require certain such.The spacing of the inner ring leg and outer ring leg that adjoin is along the entire vertical of them
It should be held substantially constant to length.In general, the spacing of the inner ring leg and outer ring leg that adjoin should be inner ring leg and/or outer ring leg
At least about 0.01 times of mean breadth (being diameter for the leg of tubulose).The interval of the inner ring leg and outer ring leg that adjoin, it is typical
Ground should be at least about 0.01-3 times of the mean breadth of inner ring leg and/or outer ring leg, should be inner ring leg and/or outer more typically
At least about 0.01-2 times of mean breadth for enclosing leg, more very typically, should be the mean breadth of inner ring leg and/or outer ring leg extremely
It is about 0.01-1 times few, it should be at least about 0.05-0.5 times of the mean breadth of inner ring leg and/or outer ring leg also more very typically.
End 940,942, the shape and size of middle section 944 and connection leg 950,952 are all non-limiting.End 940,942
Be illustrated as it is upward from the horizontal plane bending of inner ring leg and outer ring leg, but do not require it is certain so.It will be understood that the two ends
It can be downward with bending.The upward configuration of the bending of end is convenient for the one or more cylindrical helical springs to pass through inner ring leg and outer
It is sent to heating location between circle leg, but is not required certain such.For example, with the revolving speed of one or two roller and/or can turn
Always one or more cylindrical helical springs are moved along the longitudinal length of roller.One or more rollers optionally include
One or more Non-smooth surfaces region (such as groove, oncus, etc.), in order to make one or more cylindrical helical spring edges
Roller longitudinal length movement.The configuration of end can be used in such workpiece and be sent into arrangement.It will be understood that middle section
944 can also make upward or downward cylindrical helical spring longitudinal movement on roller with bending.Induction coil 900 has one
The shape of a " mellow and full rectangle ".It has been found that such coil configuration, can strengthen in cylindrical helical spring during heating
Eddy current, and when Internal and external cycle is positioned to be slightly moved closer to some mutually, provide greater concentration of surface Vertical profile of the heating.This
The induction coil configuration of sample can provide very consistent heating distribution and Curie temperature distribution, can be in less than one two minutes circle
Cylindrical helical spring is heated to the temperature of austenitizing.The two circles of induction coil are to be illustrated as being generally in same level
In plane, and the loop of two circles gradually becomes smaller.
More than two loop can be changed into induction coil 900.Induction coil 900, which also can be changed into, its every side not
With the leg (such as have a circle leg in side, and there are two circle legs, etc. in the other side) of number
Can also be using the induction coil of another pattern, but do not illustrate and, it is such a induction coil,
Including two groups of coil legs, wherein each coil leg is divided into multiple leg sections.Each coil leg can be made of (such as 2 multiple leg sections
A leg section, 3 leg sections, 4 leg sections, 5 leg sections, etc.).Each leg section of two coil legs can have substantially the same length
Degree, section configuration and cross dimensions, but do not require certain such.The section configuration of each leg section is non-limiting (such as can
Be it is rectangular, circular, ovate, polygon, etc.).Each leg section of each coil leg be usually face each other pair
Together, and the leg section that faces each other has identical length, section configuration and cross dimensions, but do not require it is certain so.Each line
The central axis for enclosing each leg section of leg generally should be on same axis, but not require certain such.The center of two coil legs
Axis is generally answered parallel to each other and is in same level plane, but is not required certain such.It can be with intermediate connector every
Each leg section of a coil leg connects, but does not require certain such.The shape and size of intermediate connector are non-limiting.
Induction coil may include the end that two coil legs are connected, but not require certain such.It can will respectively include one
Two connection legs of connecting plate connect into two coil legs.The configuration and function of two connection legs can be with shown in Fig. 2,7 and 8
Connection leg it is identical, but do not require it is certain so.Material for making this induction coil can be similar to discussed above
For making the material of induction coil 500 and/or 900, but do not require certain such.It can be protected with one or more spacer blocks
The spacing between each coil leg is held, but is not required certain such.The leg section that every two faces each other can be designed for heating
One single cylindrical helical spring.As such, 3 can be heated with the induction coil for having 3 groups of leg sections faced each other while synchronously
A cylindrical helical spring.It will be understood that such induction coil be once only used for heating one cylindrical helical spring or
Two cylindrical helical springs of primary heating.The spacing of each leg section from each other can be used for ensuring being located in every a pair and face each other
Leg section between cylindrical helical spring have enough spacing distances from each other, and can synchronously heat at the same time two or
Ensure the appropriate heating of each spring when multiple cylindrical helical springs.
Referring again to Fig. 1, control device 800 can be used for control be defeated by induction coil power, induction coil cooling,
And/or the revolving speed of one or two roller.It will be understood that control device 800 can also have other or additional function.Control
Device 800 processed is shown coupled to technique frame 210, but does not require certain such.The electric power and cooling fluid source of Fig. 2 diagram
600 also connected with technique frame 210, but does not require certain such.Control device 800 may include one or more switches 802,
Show screen 804, software program, processor, etc., to monitor and/or control the heating of cylindrical helical spring and harden.
The work of induction system is well known in the art, so will not be described in detail herein.Alternatively, control device
800 may include the temperature monitoring 810 for monitoring the temperature for being heated cylindrical helical spring.The temperature information measured is available
In the heating of control cylindrical helical spring.
Referring now to Fig. 3, roller 340,342 is designed to during cylindrical helical spring is heated by induction coil
It is rotated as shown in arrow.Fig. 3 illustrates the lower section that two rollers are located in induction coil apart from one another by ground.When roller presses arrow
Shown in head when rotation, cylindrical helical spring can be made to rotate as shown in arrow.It can make cylindrical helical spring one side quilt
Heating rotates clockwise or counterclockwise on one side.The revolving speed of cylindrical helical spring can be controlled by controlling the revolving speed of roller.It can
To rotate cylindrical helical spring before the heating process of cylindrical helical spring or in carrying out and/or later.Generally, it answers
Rotate cylindrical helical spring at least most of time that spring is heated, typically, should spring be heated to
, more typically, should be at least about 75% time that spring is heated, even more typically in few about 70% time, Ying
It, very typically, should be at least about 85% time that spring is heated, more at least about 80% time that spring is heated
Very typically, it also more very typically, should should be heated at least in spring at least about 90% time that spring is heated
In about 95% time, most typically, cylindrical helical spring should be made to rotate within 100% time that spring is heated.One
As, in the heating process of cylindrical helical spring, it should make cylindrical helical spring in its entire heating process with one
Constant speed rotation, but do not require certain such.It has been found that revolving speed has an impact to the heating of cylindrical helical spring.Also send out
Existing, when cylindrical helical spring is rotated too fast, cylindrical helical spring may poor heating.In induction heating process
In, the revolving speed of cylindrical helical spring should generally be below about 100rpm, should typically be below about 50rpm, more typically should be about
0.25-40rpm very typically should be about 1-30rpm, more very typically should be about 2-20rpm.
Cylindrical helical can be oriented properly come the coil leg relative to induction coil by adjusting the spacing of two rollers
Spring, but do not require certain such.Circle can be raised come the coil leg relative to induction coil by reducing the spacing of two rollers
Cylindrical helical spring, or cylindrical helical can be reduced relative to the coil leg of induction coil by increasing the spacing of two rollers
Spring.Referring now to Fig. 2,5 and 6, roller supporting leg 320 and 322,330 and 332 can be adjusted by adjusting position adjustable board 350
Spacing.Position adjustable board 350 is designed to can be driven by driving device 360 and move up and down.Driving device 360 can be by
The motor of the power supply of cable 362,364 and/or control.The movement of driving device 360 can be controlled with control device 800, but not
It is required that certain such.It will be understood that driving device can be a man-operated mechanism.One non-limiting configuration of position adjustable board 350
It is illustrated in Fig. 2,5 and 6.The top 352 of position adjustable board be illustrated as it is arc-shaped, but do not require it is certain so.The ontology 354 of position adjustable board
There is a vertical through slot, pin 358,360 can slide in through slot.The two pins also can be used that position adjustable board is anchored on end plate
310, but do not require certain such.The top 352 of position adjustable board 350 is designed to the shoulder on contact roller supporting leg 320,322
323,325.Roller supporting leg 320,322 is pivotally mounted end plate 310.There is through slot respectively on the two roller supporting legs
327,329, they allow pin 314,315 to move in it respectively.Roller supporting leg 320,322 be by means of pin 316,
317 are installed on end plate 310 and can pivot around pin 316,317.The size of through slot 327,329 limits the two roller supporting legs
Rate of travel.Biasing spring 370,372 but is not required centainly such as the two roller supporting legs to be biased into together
This.Spring base 374,376 can be connected to end plate 310 and position one end of biasing spring, the other end of biasing spring is inserted into roller
In spring cave 377,378 on sub- supporting leg.As shown in fig. 6, the top 352 of position adjustable board connects when position adjustable board 350 moves up
It touches the shoulder 323,325 on roller supporting leg 320,322 and makes the upper end of the two roller supporting legs away from each other.Through slot 356
With the moving range that pin 358,360 is for limiting position adjustable board.When position adjustable board 350 moves down, the top 352 of position adjustable board
The shoulder 323,325 being detached from roller supporting leg 320,322, and at this moment biasing spring keeps the upper end of two roller supporting legs mutual
It is close, as shown in Figure 5.Similar structure is on the roller supporting leg 330,332 on end plate 312, partly such as Fig. 1 institute
Show, but does not require certain such.It will be understood that can make two roller supporting legs remote mutually with a variety of different structure arrangements
From with it is close and adjust both spacing.
It, can be manually or automatically relative to induction coil cylindrical spiral shell in the operating process of process unit 100
Rotation spring is put on roller and/or is located on roller.The heating of cylindrical helical spring can manually or automatically be controlled
Process.
After one or more cylindrical helical springs on roller have been heated, typically spring is quenched and is cooled down
To complete process of hardening.Usually, quenching liquid is sprayed to spring and/or spring is dipped into quenching liquid.Available typical case's quenching liquid
It is non-limiting.As shown in Figure 1, quenching unit 700 is located at the lower section of roller and induction coil.It will be understood that quenching
Device 700 can also be positioned at other places.Quenching unit 700 illustratively includes the quenching liquid pool 702 that quenching liquid 710 is housed.It quenches
Fiery liquid pool has supporting leg 704 and castor 706, so that it can be moved, but does not require certain such.Quenching liquid pool 702 may include
One is used for quenching liquid from the bleeder valve 708 wherein released away, but does not require certain such.Quench the size and structure of liquid pool
Shape is non-limiting.In the non-limiting embodiment of Fig. 1 diagram, the cylindrical helical spring after being heated is fallen under being to be quenched
It goes to quench in fiery liquid pool.Two rollers allow for cylindrical helical spring as shown in FIG. 4 as shown in FIG. 6 away from each other
It is fallen into the quenching liquid 710 in quenching liquid pool between two rollers to whereabouts.Once cylindrical helical spring falls into quenching
Liquid pool, so that it may keep two rollers adjacent to each other again, to put next group of spring and to be heated by induction coil.In cylinder
Helical spring can manually or automatically take out it from quenching liquid pool after quenching liquid pool back warp properly quenches.
It is of the invention for heating and the technical process for the cylindrical helical spring that hardens can make the characteristic etc. of the spring to harden
Be same as or better than the spring to be hardened with conventional heating stove heating characteristic.Compared with the spring of traditional heating stove heating,
The micro-hardness section of the cylindrical helical spring heated with technical process of the invention equably spreads the material of spring, and table
Reveal improved micro-hardness.It is of the invention for heating and the cylinder that hardens compared with the spring of traditional heating stove heating
The technique of shape helical spring can also make the spring to harden have similar austenite crystal kernel structure and similar Growing Process of Crystal Particles.With
It is compared with the spring of traditional heating stove heating, it is of the invention for heating and the technique for the cylindrical helical spring that hardens can also make
The spring to harden has improved spring loss late.Therefore, compared with the spring-like of traditional heating stove heating, with the present invention
Technical process heating and the cylindrical helical spring that hardens have longer working life.Fig. 9 is illustrated with technique of the invention
Process heat and the cylindrical helical spring that hardens and cylindrical helical spring with traditional or conventional heating stove heating
Residual stress ratio.Compared with the spring of traditional heating stove heating, the circle that is heated and hardened with technical process of the invention
Cylindrical helical spring shows improved residual stress ratio.Therefore, Fig. 9 is illustrated with technical process heating of the invention and is hardened
Cylindrical helical spring have the lower residual stress and negative residual stress of the whole thickness throughout its wire.One kind is also used
Quenching technical and shot-blast process complete two spring finished products.With a same spring for conventional heating stove heating show compared with
High residual stress, and residual stress is a positive number at about 0.006 inches deep of wire.Therefore, and with tradition
The similar cylindrical helical spring of heating stove heating compare, the cylindrical helical for being heated and being hardened with technical process of the invention
Spring has potential longer operational life.
It will be understood that once cylindrical helical spring heated with technical process of the invention, so that it may it is carried out into
One step process handles to reach desired spring final performance.Such further process can include: incude in spring
It is quenched after heating；Stress elimination (such as carry out be tempered, etc.) is carried out to spring after quenching；To spring into
Row bead (shot-peening or twice shot-peening) and make have compression stress in spring material；And/or it is right after bead
Spring carries out heat setting and resets the yield point of spring material.Make to form remaining turn round in spring using thermosetting process Shi Qihui
Stress.These subsequent technical process are used in combination with induction heating technology of the invention, can make the cylindrical helical spring to harden, with
Be heat-treated in traditional heating furnace can analogy cylindrical helical spring compare, have improved characteristic.
It can therefore be seen that the purpose of the present invention displayed in set forth above and above description all can be effectively
Reach, and certain changes, institute can be made to the construction illustrated here on the premise of without departing from the spirit and scope of the present invention
It is being indicated in attached drawing that include in above description and each so content should all be read as illustrative rather than limit to say here
Property processed.It has been combined preferred and feasible embodiment and describes the present invention.Those skilled in the art are in reading and understanding
Of present invention given herein these can make various modifications and changes after being discussed in detail.So to say here, this hair
Bright includes all variations and modifications within the scope of the present invention.It should also be understood that claims will cover it is described herein
Of the invention all general and peculiar features and the scope of the present invention whole statements, expressed as a kind of language, can
To say being enough to specify.
Claims (40)
1. a kind of equipment for the spring that hardens, the spring has inner surface, outer surface and longitudinal axis, the equipment packet
It includes:
A. for supporting the rotating support system of the spring, the rotating support system includes the first spring support and second
Spring support and driving device, first spring support and second spring supporting member respectively have its longitudinal axis, described
First spring support includes the first roller of outer surface, and the driving device is structured to make first roller turn,
First and second spring support is structured to support the spring, wherein the longitudinal axis of the spring is parallel
It is structured to described in contact in the outer surface of the longitudinal axis of first and second spring support, first roller
The outer surface of spring simultaneously at least partly supports the spring, and makes the spring around bullet in first roller turn
The fore-aft axis of spring；And
B. for heating the induction heating system for the spring being supported in the rotating support system, the induction heating
System includes induction coil system, and the induction coil system is to be arranged to make its a part in the spring heating process
It is located in at least side of the spring, at least side of the spring is supported in the rotating support system at the same time,
The induction coil system includes the first induction coil part, the second induction coil part and third induction coil part, these
Induction coil part is at least partially formed induction heating region, and third induction coil part is located immediately adjacent and is parallel to
First induction coil part, second induction coil part be positioned to be not parallel to first induction coil part and
Third induction coil part, when the spring is located at the induction heating region to be heated by the induction coil system
When, first induction coil part and third induction coil part are orientated the longitudinal length along the spring, described
At least one of first induction coil part and second induction coil part are relative to the rotating support system oriented
To make the spring in the lower section of at least one of first induction coil part and second induction coil part
It is admitted to the induction heating region,
Wherein, first roller and the second roller can move and away from each other with it is close, so as to adjust the spacing of the two.
2. equipment as described in claim 1, wherein second induction coil part is fixed relative to the rotating support system
To are as follows: when the spring, which is parallel to its longitudinal axis, is admitted to the induction heating region, so that the spring is described
Two induction coil beneath portions are admitted to the induction heating region, and first induction coil part and third induction coil
Part is relative to the rotating support system oriented are as follows: is admitted to the induction heating when the spring is parallel to its longitudinal axis
When region, the spring can be prevented to be admitted to the sense in first induction coil part and third induction coil beneath portions
Answer heating region.
3. equipment as described in claim 1, wherein the induction coil system include the 4th induction coil part, the 4th
Induction coil part is positioned in parallel to second induction coil part.
4. equipment as claimed in claim 2, wherein the induction coil system include the 4th induction coil part, the 4th
Induction coil part is positioned in parallel to second induction coil part.
5. equipment as described in claim 1, wherein first induction coil is partially attached to second induction coil portion
Point, second induction coil is partially attached to third induction coil part.
6. equipment as claimed in claim 4, wherein first induction coil is partially attached to second induction coil portion
Point, second induction coil is partially attached to third induction coil part.
7. equipment as described in claim 1, wherein the rotating support system is configured to make the spring along its longitudinal axis
Move into the induction heating system.
8. equipment as claimed in claim 6, wherein the rotating support system is configured to make the spring along its longitudinal axis
Move into the induction heating system.
9. equipment as described in claim 1, wherein first roller has longitudinal length, and the longitudinal length is than the sense
Answer the longitudinal length of heating region long, at least part of first roller extends beyond the periphery in the induction heating region
Side.
10. equipment as claimed in claim 8, wherein first roller has longitudinal length, and the longitudinal length is than the sense
Answer the longitudinal length of heating region long, at least part of first roller extends beyond the periphery in the induction heating region
Side.
11. equipment as described in claim 1, wherein the outer surface of first roller is made of non-conducting material
's.
12. equipment as claimed in claim 10, wherein the outer surface of first roller is made of non-conducting material
's.
13. equipment as described in claim 1, wherein the second spring supporting member includes the second roller of outer surface, institute
The outer surface for stating the second roller is structured to contact the outer surface of the spring and at least partly supports the bullet
Spring, and make the spring around the fore-aft axis of spring in second roller turn.
14. equipment as claimed in claim 12, wherein the second spring supporting member includes the second roller of outer surface,
The outer surface of second roller is structured to contact the outer surface of the spring and at least partly described in bearing
Spring, and make the spring around the fore-aft axis of spring in second roller turn.
15. equipment as claimed in claim 11, wherein the outer surface of second roller is made of non-conducting material
's.
16. equipment as claimed in claim 14, wherein the outer surface of second roller is made of non-conducting material
's.
17. equipment as described in claim 1, wherein the induction coil system in the heating process of the spring with institute
Spring intervals are stated to open.
18. equipment as claimed in claim 16, wherein the induction coil system in the heating process of the spring with institute
Spring intervals are stated to open.
19. equipment as described in claim 1, wherein when the spring is heated by the induction heating system, described first
Induction coil part and second induction coil part are spaced apart identical distance with the outer surface of the spring.
20. equipment as claimed in claim 18, wherein when the spring is heated by the induction heating system, described
One induction coil part and second induction coil part are spaced apart identical distance with the outer surface of the spring.
21. equipment as described in claim 1, wherein the rotating support system is configured such that first spring-loaded
Part and the second spring supporting member allow the spring longitudinal axis from first spring support and described away from each other
Pass through between second spring supporting member.
22. equipment as claimed in claim 20, wherein the rotating support system is configured such that the first spring branch
Bearing member and the second spring supporting member allow the spring longitudinal axis from first spring support and institute away from each other
It states and passes through between second spring supporting member.
23. equipment as described in claim 1, wherein including quenching liquid pool, the quenching liquid pool is constructed to receive and be heated
After the spring.
24. equipment as claimed in claim 22, wherein including quenching liquid pool, the quenching liquid pool, which is constructed to receive, to be added
The spring after heat.
25. equipment as described in claim 1, wherein the spring has the shape of spiral shape or cone.
26. equipment as claimed in claim 24, wherein the spring has the shape of spiral shape or cone.
27. equipment as described in claim 1, wherein in the heating process of the spring, the rotating support system
Make the spring pivotal with constant revolving speed.
28. equipment as claimed in claim 26, wherein in the heating process of the spring, the rotating support system
System makes the spring pivotal with constant revolving speed.
29. equipment as described in claim 1, wherein in the heating process of the spring, the rotating support system
Make the spring pivotal with variable revolving speed.
30. equipment as claimed in claim 26, wherein in the heating process of the spring, the rotating support system
System makes the spring pivotal with variable revolving speed.
31. a kind of method for the spring that hardens, comprising:
A) spring is provided, the spring has inner surface, outer surface and longitudinal axis；
B) rotating support system as described in claim 1 is provided to support the spring；
C) induction heating system as described in claim 1 is provided to heat the spring, at the same time by the spring-loaded
In the rotating support system；
D) outer surface of the spring is positioned at least partially on the first roller of the rotating support system；And
E) spring is heated with the induction heating system on one side, rotates the spring with the rotating support system on one side.
32. a kind of method for the spring that hardens, comprising:
A) spring is provided, the spring has inner surface, outer surface and longitudinal axis；
B) rotating support system as claimed in claim 26 is provided to support the spring；
C) induction heating system as claimed in claim 26 is provided to heat the spring, at the same time by the spring-loaded
In the rotating support system；
D) outer surface of the spring is positioned at least partially on the first roller of the rotating support system；And
E) spring is heated with the induction heating system on one side, rotates the spring with the rotating support system on one side.
33. method as claimed in claim 31, wherein further include following steps: utilizing the rotating support system, make described
Spring moves into the induction heating region along its longitudinal axis.
34. method as claimed in claim 32, wherein further include following steps: utilizing the rotating support system, make described
Spring moves into the induction heating region along its longitudinal axis.
35. method as claimed in claim 31, wherein further include following steps: making first spring support and described
Second spring supporting member allow away from each other the spring from first spring support and the second spring supporting member it
Between pass through.
36. method as claimed in claim 34, wherein further include following steps: making first spring support and described
Second spring supporting member allow away from each other the spring from first spring support and the second spring supporting member it
Between pass through.
37. method as claimed in claim 31, wherein in the heating process of the spring, the rotating support system
System is with spring described in constant rotational speed.
38. method as claimed in claim 36, wherein in the heating process of the spring, the rotating support system
System is with spring described in constant rotational speed.
39. method as claimed in claim 31, wherein in the heating process of the spring, the rotating support system
System is with spring described in variable rotational speed.
40. method as claimed in claim 36, wherein in the heating process of the spring, the rotating support system
System is with spring described in variable rotational speed.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410545456.6A CN105567918B (en) | 2014-10-15 | 2014-10-15 | The induction heating of spring |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410545456.6A CN105567918B (en) | 2014-10-15 | 2014-10-15 | The induction heating of spring |
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| CN105567918B true CN105567918B (en) | 2019-03-12 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR101665294B1 (en) * | 2016-05-17 | 2016-10-13 | (주)대코 | Continous heating device for coil springs and heating method for coil springs by using this device |
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| US4164997A (en) * | 1977-02-02 | 1979-08-21 | Owens-Illinois, Inc. | Article transport device and method |
| US4856641A (en) * | 1986-11-25 | 1989-08-15 | Dainippon Screen Mfg. Co., Ltd. | Apparatus and a method for carrying wafers |
| US5572853A (en) * | 1994-08-15 | 1996-11-12 | Simmons Company | Method and apparatus for conditioning pocketed coil springs |
| CN1652641A (en) * | 2004-02-03 | 2005-08-10 | 第一高周波工业株式会社 | Heater of metal cylinder |
| CN1764989A (en) * | 2003-02-14 | 2006-04-26 | 感应加热有限公司 | Induction heat treatment of complex-shaped workpieces |
| CN1820085A (en) * | 2003-08-19 | 2006-08-16 | 高周波热炼株式会社 | Heat treating device and heat treating method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4164997A (en) * | 1977-02-02 | 1979-08-21 | Owens-Illinois, Inc. | Article transport device and method |
| US4856641A (en) * | 1986-11-25 | 1989-08-15 | Dainippon Screen Mfg. Co., Ltd. | Apparatus and a method for carrying wafers |
| US5572853A (en) * | 1994-08-15 | 1996-11-12 | Simmons Company | Method and apparatus for conditioning pocketed coil springs |
| CN1764989A (en) * | 2003-02-14 | 2006-04-26 | 感应加热有限公司 | Induction heat treatment of complex-shaped workpieces |
| CN1820085A (en) * | 2003-08-19 | 2006-08-16 | 高周波热炼株式会社 | Heat treating device and heat treating method |
| CN1652641A (en) * | 2004-02-03 | 2005-08-10 | 第一高周波工业株式会社 | Heater of metal cylinder |
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|---|---|
| CN105567918A (en) | 2016-05-11 |
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