CN104668316B - The method and apparatus of aligning outside sintering blank stove - Google Patents
The method and apparatus of aligning outside sintering blank stove Download PDFInfo
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- CN104668316B CN104668316B CN201510087327.1A CN201510087327A CN104668316B CN 104668316 B CN104668316 B CN 104668316B CN 201510087327 A CN201510087327 A CN 201510087327A CN 104668316 B CN104668316 B CN 104668316B
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- sintering blank
- blank
- sintering
- heating furnace
- heating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/24—After-treatment of workpieces or articles
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- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Powder Metallurgy (AREA)
Abstract
The present invention relates to the method and apparatus aligned outside sintering blank stove, including：The sintering blank that profile is had flaw deformation heats in heating furnace, and heating-up temperature is less than the fusing point of described sintering blank；After sintering blank is heated and can be corrected, fixing on the aligning base that sintering blank is taken to outside heating furnace, pressure is applied to the sintering blank of described fixation by briquetting, make sintering blank produce deformation and reach after standard requirement up to the profile sintering blank, keep the pressure to sintering blank for the briquetting, after blank cooling to be sintered, discharge briquetting pressure.The method and apparatus that the present invention sinters aligning outside blank stove, can very convenient, efficiently the sintering blank deforming upon is aligned, reach corresponding industrial requirements, the qualification rate of sintering blank is improve on very big degree, significantly reduce the production cost of enterprise, and have significant impetus and economic benefit to enterprise and whole industry.
Description
Technical field
The present invention relates to the method for aligning and device for the method outside stove are carried out to sintering blank.
Background technology
In many commercial production such as metallurgical, filter production, all there is sintering circuit, sintering is a traditional handicraft mistake
Journey, refers to granular material is changed into a kind of process of DB.People produce pottery, powder very early using this technique
Last metallurgy, refractory material, hyperthermal material etc.., general production process is first metal dust to be passed through mould taking powder metallurgy as a example
Tool high pressure (more than 100MPa) extruding, the gathering of metal dust physics is integral under high pressure, and its shape is adapted with mould, at this moment
Wait the semi-finished product obtaining and be commonly called as pressed compact.Then again pressed compact is put into and heat in heating furnace and be incubated, generally the maximum temperature of heating
Less than pressed compact fusing point it is therefore an objective to make to merge into each other or occur chemical reaction between metal powder granulates, pressed compact thus changes into one
Individual fine and close entirety.To pressed compact heating process be commonly called as sinter, its effect be make pressed compact metal powder granulates molten bonding integral,
Sinter the semi-finished product obtaining and be commonly called as sintered blank.Pressed compact is that metal powder granulates physics assembles the body of powder being formed, and sintered blank is
Hardware after sintering, is combined by chemical reaction between metal powder granulates, for example iron rod, iron pipe etc..Finally to sintering
Base carries out the various parts that machining can obtain needs.
It is often desirable that pressed compact its shape in sintering process is regular no deformation in actual production, but due to pressure
The material at each position of base is simultaneously not exclusively uniform, and it is impossible to ensure that each position of pressed compact is heated completely equal in heating process
Even, there is creep in pressed compact under high temperature action, and self-strength is greatly reduced, and when thus may lead to sinter, the local of pressed compact produces
The deformation of contraction or expansion, thus the expendable plastic deformation such as bend.Simultaneously again because being limited by sintering process,
In sintering process, pressed compact does not have constrained rigidly, therefore just cannot constrain its deformation in sintering process yet.In general production,
Deformation degree to various sintering blanks is conditional, can only abandon beyond the sintering blank limiting, as waste disposal, this
Production cost can be in any more, have had a strong impact on product qualified rate.
Content of the invention
The invention provides the method and apparatus aligned outside a kind of sintering blank stove, in order to the sintering that obvious deformation occurs
Blank is aligned so as to be reached corresponding industrial requirements, improves the qualification rate of sintering blank, reduces the production cost of enterprise.
The method that the present invention sinters aligning outside blank stove, including：Profile there is the sintering blank of flaw deformation in heating furnace
Middle heating, heating-up temperature is less than the fusing point of described sintering blank；After sintering blank is heated and can be corrected, blank will be sintered
Take fixing on the aligning base to outside heating furnace, pressure is applied to the sintering blank of described fixation by briquetting, makes sintering blank
The profile producing deformation up to sintering blank reaches after standard requirement, keeps the pressure to sintering blank for the briquetting, blank to be sintered
Briquetting pressure is discharged after cooling.The sintering blank of different materials, the temperature that can carry out aligning deformation after its heating is also different,
Corresponding heating-up temperature is arranged according to different sintering blank material.The component that metal material is formed has a kind of property,
After reaching uniform temperature, the internal stress of hardware and intensity can be greatly lowered.At this temperature, hardware can be outside
Power effect is lower to there is plastic deformation.Generally, after temperature reduces, hardware can keep the shape after plastic deformation, and not
Can return to the original form.Although this property is metal material generally existing, it is not utilized to sintering blank
Straightening process in.Those skilled in the art wishes to reduce or overcome the technical problem of sintering blank deformation for a long time, but all the time
Effectively do not solved, therefore the present invention is to make use of the universal feature of metal, solve this area and wish for a long time to solve
And unsolved problem, its mode seems simple, but has important environment protection significance and warp to whole industry and manufacturing enterprise
Ji meaning, on the basis of not increasing the excessive production cost of enterprise, is greatly improved the qualification rate of sintering blank.
When being fixed on described sintering blank in aligning base, the protrusion of the defect of form deformation of sintered blank part can be made
High point is corresponding with described briquetting.Directly the protrusion high point pressure of deformation can more effectively be aligned to sintering blank, if
Reversely to the described surrounding's pressure protruding high point, not only pressure area increases, and so that the pressure of contact point is reduced, and easily makes
Peripheral part produces secondary deformation.
Further, by briquetting, sintering blank is aligned in thermal environment.During to sintering blank aligning
Can also carry out in thermal environment in open environment, but the temperature that can reduce sintering blank in thermal environment reduces
Speed, makes that sintering blank is basic in straightening process to keep constant temperature, so can more accurately control briquetting pressure dynamics and
Time, and improve aligning efficiency.
Specifically, by the temperature sensor in heating furnace, the temperature in heating furnace is monitored it is also possible to directly lead to
Cross apparatus such as computer the temperature in heating furnace to be configured and monitors.
Present invention also offers a kind of device for said method, including heating frock and aligning frock, heat frock
Include the heating furnace with fire door, there are in heating furnace the heated seats in heating plate, be provided with heating around heated seats
Device, also has the monitoring system to heating in-furnace temperature；Aligning frock includes briquetting and aligning base, briquetting and drive system
Connect, and at least can be along the movement in vertical direction of described aligning base end face and corresponding with aligning base.Aligning base should with treat
The general configuration of aligning sintering blank is adapted, and is just conducive to fixing and spacing to sintering blank.Heater can added
Below hot plate setting a plurality of heating rod, or around heated seats setting heat block or on hot plate arrange electricity
The structures such as resistance silk directly heat to the sintering blank in heated seats and heated seats.Described monitoring system can be in heating furnace
Temperature is controlled and checks, monitoring system can be the special equipment being connected with heating furnace or be one with heating furnace
The structures such as the control panel of body.The drive system of briquetting can be realized using conventional automatic control structure.
A kind of preferred mode is, by described aligning frock in thermal environment, is so conducive to improving aligning effect
Rate, is also easy to control pressure and the time of aligning.
Further, it is provided with passage on hot plate, so that the temperature of heating is more rapidly and effectively delivered to and add
On hot seat and sintering blank.
On this basis, in order to avoid the heat in heating furnace in heating process scatters and disappears, and also to protection heating
Equipment around stove etc., can be provided with heat insulation structural in the inwall of heating furnace, such as polystyrene thermal insulation layer, ceramic fibre are heat-insulated
The structures such as plate, glass cotton thermal insulation layer.
Further, described monitoring system includes the temperature sensor in heating furnace and the control being connected with heating furnace
Molding block, temperature sensor can be more convenient accurately to transmit in heating furnace temperature information, then by conventional control
Module is controlled to the temperature in heating furnace and checks.
The present invention sinter blank stove outside aligning method and apparatus, can very convenient, efficiently to the burning deforming upon
Knot blank aligned so as to be reached corresponding industrial requirements, very big degree improves sintering blank qualification rate hence it is evident that
Reduce the production cost of enterprise, and have significant impetus and economic benefit to enterprise and whole industry.
Specific embodiment with reference to embodiments, is described in further detail to the above of the present invention again.
But this scope being interpreted as the above-mentioned theme of the present invention should not be only limitted to Examples below.Thinking without departing from the above-mentioned technology of the present invention
In the case of thinking, the various replacements made according to ordinary skill knowledge and customary means or change, all should include at this
In bright scope.
Brief description
Fig. 1 sinters the heating frock schematic perspective view of the outer straightener of blank stove for the present invention.
Fig. 2 is the axial section of Fig. 1.
Show with the position of sintering blank when the aligning frock that Fig. 3 sinters the outer straightener of blank stove for the present invention is aligned
It is intended to.
Fig. 4 is Fig. 3 axial section.
Specific embodiment
As depicted in figs. 1 and 2 the present invention sinter blank stove outside aligning device, include heating frock and align frock,
Include the heating furnace 1 with fire door 2 in heating frock, there is in heating furnace 1 heated seats 10 in heating plate, heating plate
It is provided with multiple passages 9, so that the temperature of heating is more rapidly and effectively delivered in heated seats 10 and sintering blank.?
The lower section of heated seats 10 is provided with the heater 8 of a plurality of heating rod structure.Also be there is the monitoring system being connected as one with heating furnace
System is monitored to temperature in heating furnace 1.Multiple temperature sensors 6 and phase in heating furnace is included in monitoring system
Control/the display floater 7 answered and processing module 5.In order to avoid the heat in heating furnace 1 in heating process scatters and disappears, simultaneously
In order to protect the monitoring system being connected as a single entity with heating furnace 1 will not be additionally provided with heat-insulated knot because crossing cause thermal damage in the inwall of heating furnace 1
The structure such as structure, such as polystyrene thermal insulation layer, ceramic fibre thermal insulation board, glass cotton thermal insulation layer.
As shown in Figure 3 and Figure 4, in aligning frock in thermal environment, which includes the drive automatically controlling with routine
Briquetting 4 and aligning base 11 that dynamic system (not shown) connects, briquetting 4 can be along aligning base 11 bottom under the drive of drive system
The movement in vertical direction in face and with aligning base 11 corresponding it is also possible to along align base 11 bottom surface parallel motion positioned.Rectify
Straight base 11 should be adapted with the general configuration waiting to align sintering blank 3, is just conducive to fixing and spacing to sintering blank 3.
During to sintering blank 3 aligning, the sintering blank 3 first profile being had flaw deformation is placed in the heating furnace 1 of heating frock
Heated seats 10 on, by described monitoring system control heating rod structure heater 8 heating furnace 1 is heated, heating-up temperature
Fusing point less than described sintering blank 3.When the temperature in heating furnace 1 reach can make the temperature of sintering blank 3 deformation after will burn
Knot blank 3 is taken out to positioning on the aligning base 11 of the aligning frock in thermal environment and fixes, and makes the profile of sintering blank 3
The protrusion high point of flaw deformation is corresponding with the compression point of briquetting 4.Briquetting 4 is under the control of drive system on aligning base 11
Sintering blank 3 pressure aligning.After the profile sintering blank 3 reaches standard requirement, keep the pressure to sintering blank 3 for the briquetting 4
Power, and reduce the temperature in thermal environment, for example thermal environment is in communication with the outside and carries out heat exchange, after sintering blank 3 cooling
The pressure to sintering blank 3 for the release briquetting 4, that is, satisfactory sintering blank 3 after being aligned.The sintering blank of different materials
3, the temperature that can carry out aligning deformation after its heating is also different, according to different sintering blank 3 materials in a conventional manner
Corresponding heating-up temperature is set.
Claims (6)
1. the method aligned outside sintering blank stove, its feature includes：Profile there is the sintering blank of flaw deformation in heating furnace
Heating, heating-up temperature is less than the fusing point of described sintering blank；After sintering blank is heated and can be corrected, sintering blank is taken
Fixing on aligning base to outside heating furnace, pressure is applied to the sintering blank of described fixation by briquetting, so that sintering blank is produced
Raw deformation reaches after standard requirement up to the profile of sintering blank, keeps the pressure to sintering blank for the briquetting, and blank to be sintered is cold
But discharge briquetting pressure afterwards, and above-mentioned straightening step is carried out in thermal environment；Above-mentioned heating stepses use heating frock,
This heating frock includes the heating furnace (1) with fire door (2), and heating furnace has the heated seats in heating plate in (1)
(10), it is provided with heater (8) around heated seats (10), also there is the monitoring system to the interior temperature of heating furnace (1)；Above-mentioned strong
Using aligning frock, this aligning frock and includes briquetting (4) and aligning base (11), briquetting in thermal environment to straight step
(4) be connected with drive system, and at least can along described aligning base (11) bottom surface movement in vertical direction and with aligning base
(11) corresponding.
2. the method aligned outside sintering blank stove as claimed in claim 1, it is characterized by：Described sintering blank is fixed on strong
When in straight base, make the protrusion high point of the defect of form deformation of sintering blank corresponding with described briquetting.
3. the method aligned outside the sintering blank stove as described in one of claim 1 to 2, it is characterized by：By in heating furnace
Temperature sensor is monitored to the temperature in heating furnace.
4. the method aligned outside the sintering blank stove as described in one of claim 1 to 2, it is characterized by：It is provided with hot plate
Passage (9).
5. the method aligned outside the sintering blank stove as described in one of claim 1 to 2, it is characterized by：Interior in heating furnace (1)
Wall is provided with heat insulation structural.
6. the method aligned outside the sintering blank stove as described in one of claim 1 to 2, it is characterized by：Described monitoring system
The control module be connected including the temperature sensor (6) in heating furnace and with heating furnace.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510087327.1A CN104668316B (en) | 2015-02-25 | 2015-02-25 | The method and apparatus of aligning outside sintering blank stove |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510087327.1A CN104668316B (en) | 2015-02-25 | 2015-02-25 | The method and apparatus of aligning outside sintering blank stove |
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| Publication Number | Publication Date |
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| CN104668316A CN104668316A (en) | 2015-06-03 |
| CN104668316B true CN104668316B (en) | 2017-03-08 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105251811A (en) * | 2015-11-16 | 2016-01-20 | 梁俊 | Electric heating straightening groove for fishing pole |
| CN110899390A (en) * | 2019-12-11 | 2020-03-24 | 常德鹏达机械加工有限公司 | Oil cylinder telescopic rod correction method of single-column correction press |
| CN113245402B (en) * | 2021-06-02 | 2022-01-25 | 索罗曼(常州)合金新材料有限公司 | Low-cost titanium alloy creep shape correcting furnace |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61119331A (en) * | 1984-11-14 | 1986-06-06 | Yoshizo Yamamoto | Method and device for annealing of casting made of aluminum alloy |
| ES2039933T3 (en) * | 1988-09-27 | 1993-10-01 | Mannesmann Aktiengesellschaft | PROCEDURE FOR HOT STRAIGHTENING OF STEEL PIPES. |
| JPH04111926A (en) * | 1990-08-29 | 1992-04-13 | Sumitomo Metal Ind Ltd | Method for hot correcting steel tube |
| CN100497664C (en) * | 2006-08-31 | 2009-06-10 | 中铝西南铝板带有限公司 | Pushing type heating furnace with cooling apparatus |
| JP4921989B2 (en) * | 2007-01-17 | 2012-04-25 | カヤバ工業株式会社 | Method for manufacturing straightened tempered workpiece |
| US8499605B2 (en) * | 2010-07-28 | 2013-08-06 | Ati Properties, Inc. | Hot stretch straightening of high strength α/β processed titanium |
| CN102101170A (en) * | 2010-12-28 | 2011-06-22 | 株洲硬质合金集团有限公司 | Method for producing tungsten bar for calendering |
| CN102672176A (en) * | 2012-05-23 | 2012-09-19 | 海安县鹰球集团有限公司 | High-abrasion-resistance powder metallurgical spherical hinge for excavating machine and manufacture method of spherical hinge |
| CN103433334B (en) * | 2013-08-30 | 2017-02-08 | 鞍钢股份有限公司 | Straightening method for preventing buckling of steel plate |
| CN204523863U (en) * | 2015-02-25 | 2015-08-05 | 成都易态科技有限公司 | Sintering blank carries out the device that stove is aligned outward |
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