CA2535823A1 - Method for increasing the stability and/or load carrying ability of work pieces by means of friction welding - Google Patents
Method for increasing the stability and/or load carrying ability of work pieces by means of friction welding Download PDFInfo
- Publication number
- CA2535823A1 CA2535823A1 CA002535823A CA2535823A CA2535823A1 CA 2535823 A1 CA2535823 A1 CA 2535823A1 CA 002535823 A CA002535823 A CA 002535823A CA 2535823 A CA2535823 A CA 2535823A CA 2535823 A1 CA2535823 A1 CA 2535823A1
- Authority
- CA
- Canada
- Prior art keywords
- work piece
- stability
- load carrying
- hole
- work
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P6/00—Restoring or reconditioning objects
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
- B23K20/122—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding
- B23K20/1265—Non-butt welded joints, e.g. overlap-joints, T-joints or spot welds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
- B23K20/122—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding
- B23K20/127—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding friction stir welding involving a mechanical connection
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
- B23K20/122—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding
- B23K20/1275—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding involving metallurgical change
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
- B23K20/129—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding specially adapted for particular articles or workpieces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/08—Non-ferrous metals or alloys
- B23K2103/10—Aluminium or alloys thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/08—Non-ferrous metals or alloys
- B23K2103/15—Magnesium or alloys thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/18—Dissimilar materials
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
Abstract
The invention relates to a method for at least locally increasing the stability and/or load carrying ability of work pieces (10), whereby first of all a first work piece (11) is produced by means of a conventional manufacturing method. The inventive method is characterized by the following steps: a) the first work piece (11) is then provided with a hole (13) in the area where stability and/or load carrying ability are to be increased; b) a second work piece (12) which consists of a stability- and/or load carrying ability-increasing material is introduced into the hole (13); c) in this state, the second work piece (12) is rubbed relative to the first work piece (11) according to the friction welding method until the welding temperature is reached which lies below the melting temperature of the two work pieces (11, 12), thereby obtaining a friction-welded connection between the first work piece (11) and the second work piece (12) and producing the work piece (10).
Description
Process far increasing the stability andlor load carrying capacity of 'work pieces by moans of friction welding Dcscxiptioxz The invention relates to a process for increasing the stability andlor load carrying capacity of work pieces at least locally, wherein a fxst work piece is first produced by means of a conventional rnanufactuxi~ng process.
Certain work ,pieces wl.~icl,7, are produced froyr~ certain matexi~ls by means of known, conventional manufacturing processes, such. as c.g. industrial casting processes, possess, with respect to their stability andlor load carrying capacity when used in the appropriate incorporation sites arrd/ar with respect to the appropriate incorpoxatiov pLU~poses, e.g. a desired low weight sucly as it is encountered e.g_ in the case of light xx~etal working materials, however, when choosing the waxkin,g material forming the Fork piece, they frequently do not exhibit, specifically regarding the working txaaterial, the stability and/or load carrying capacity required. or desired for the use of the work piece for the intended purpose. In order to counteract, in these cases, the low stability andlor the low load carrying capacity of such work pieces manufactured from such working materials at .least at sites of the work piece subject to high stress, these a.xeas are 'reinforced', as early as in the manufacturing process, by working materials irz order to achieve the higher stability andlor load carrying capacity of the work pieces airn~ed at, at least in these local areas. In the case of,- a work piece produced e.g. frorrx light metal using known metallurgic casting techniques, a cast i~nsextion clement is introduced into the mould at the corresponding site during the casting process and the casting material is cast around it in such a way that at Icast a local increase in stability andlor load carrying capacity is in fact achieved as intended.
In the case of metal work pieces, i.n particular, this regularly leads to incompatibilities regardi~ag the electxochernicai potentials of the working material of the work piece and the working material of the cast insertion clement and also regarding inherent stresses. As practical results with such composite work pieces have shown, this leads not only to corrosion phenomena occurring increasingly but also to the t'ormation o.f cracks as a result of the said unfavourable inherent stresses of the twa working materials ofthe two work pieces.
If such composite work pieces arc exposed to the normal envi.ronmcnt or, indeed, to the stresses caused by salt-containing, aqueous solutions, such work pieces fail within a very short time. In this respect, greatly differing physical and mechanical.
characteristics of the working material farming the work piece and of the woxki.n.g material forming the cast insertion element also play a. part in, soma respects. ~inal.ly, disadvantageous internal stresses caused by the actual casting process employed also arise in the course of production.
It is thus the task of. the present invention to provide a ,process of the above-mentioned type by means of which an increase in the stability andlax load carrying capacity of work pieces is achieved at least locally, namely in the case of work pieces which, regarding their basic configuration, have been produced by means of different, generally known and, i~
necessary, conventional production processes, it being intended to achieve also an increased terxiperature stability in the case of work pieces produced by means of manufacturing processes previously used and it being intended that the process be practicable in a cost-Effective nn.an.ner with low expenditure orx equipment.
The task is achieved acco.rdin,g to the invention by a. tlye rrst work piece being subsequently provided with a hole in the area where the stability andlor load carrying capacity are to be increased and subsequently b. a second work piece consisting of a stability andlor load carrying capacity increasing working material being introduced. into the hole and c. in this state, the second wori< piece being rubbed relative to the first work piece according to the friction welding method until the welding terrmperature is reached which is below th.e melting temperature of the twvo work pieces in order to create a Friction-welded connection between the two work pieces.
F3y z~eans of the process according to the invention, it is advantageously achieved that composite work pieces can be ,produced which exhibit, at least locally, the characteristics with respect to stability, load carrying capacity and durability at high temperatures and a high resistance to wear and tear and work pieces produced in this way can.
thus be used in areas which had previously been totally inaccessible to such work pieces. In this respect it is possible, if the first work piece, for example, consists of a llgh.t metal working material, that all the advantageous characteristics of the light meal can be utilised for the work piece as a whole, such as the law weight andlar its low density but, in addition, the stability andlor load carrying capacity and. temperature stability characteristics can also be achieved at least in the local area of the work piece which, previously, had. been accessible only to work pieces af, working materials with a high specific gravity and/or a high density or to working materials which are extremely difficult to process and to working materials which can be provided only at great costs.
Basically, the process according to the invention can be carried. out by usizag all the variants of frictia.n welding, According to an advantageous embodiment of the process, the hole in tb.e first work piece is a bore and the second work piecE exhibits a rotation-symmetrical foz~x~, tho zzxethod of friction welding being ira this case that of friction stir welding, it being possible in this case ,far friction cone welding to be used which is a special from if friction stir welding. In this way, it is possible for reinforcements to be achieved in a controlled manner in certain local areas of the first work piece which reinforcements increase the stability and/or load earryi.ng capacity of the work piece as a whole. In this way, the hole caa have either a cylindrical or conical fonx~, the rotation symm.etrieal second. work piece hawing either a corresponding cylindrical or conical form izr this case.
The hole or the bore can cross the work piece at a corresponding site of the first woxk piece;
however, it is also possible to form the .hale or the bore as a. blind hole or a blind bore such that a bottom remains in the first work piece.
According to a further advantageom embodiment of the process, the hole or the bore in the ~.rst work piece is filled at least partly by the second work piece in a connected state, i.c. it is possible to form a through-hole or a blind hole or a blind bore in the second work piece to correspond. to the shape of the second work piece before the latter is competed with the first work piece by the friction welding process.
»asically, the first work piece can be produced by employing any desired suitable production praeess. preferably, however, the First work piece i.s pxodueed in one casting maa~ufacturing process which leas the advantage that the first work piece can be higb.ly cost-cffectively mass~pxoduced using known industrial casting processes, whereas th.e second work piece which exhibits the stability and load bearing capacity characteristics aimed at specifically which are then. aimed at in the composite of the two work pieces for th,e work piece as a whole and can be rnadc use of e.g. as comrn.ereially available semi~finish.ed products, such that only minimal cost increases need. to be recorded ,fox the composite woxk piece achievable according to the invention compared with a standard work piece produced by industrial casting measures.
According to a further adwaiztageous different cmbodirn~,ertt of. tl~e invention, at least the frst work piece consists of a light metal or a light metal alloy, the light metal alloy being preferably magnesiurra or a magnesium alloy or finally advantageously the light metal aluminium or an aluminium alloy.
Alumiz~.ium and magnesium, including its corresponding alloys, play an increasingly strong part in the light construction industry, i.e. in the construction o.f motor vehicles and. in the aircraft and space industry. In the area of motor vehicle construction, iai particular, there is also the requirement, apart from the !ow density of aluminium and zr~agnesium, of being able to provide work pieces or structural parts of theses working materials in an extremely cast-effective manner such that work pieoes are already produced in this sector in particular by known industrial casting processes. Nevertheless, there is the requirement regarding these cases that they should withstand high mechanical and electrochemical stresses at least locally. According to the invention, the good castability of magnesium or magnesium.
alloys or alumiz~iuxn or alurzai.r~ium allays and their goad mechanical proaessability are combined with the properties ofthe second working material a.f the second work piece which, exhibit a high rneclzanical and electrochemical load carrying capacity but which are less oasily proeessable and much more difficult to cast - to remain with this example ~- than that of the first work piece.
The ir~ven.tian will now be described in. further detail with reference to the single drawing by way of a practical example. This shows;
in four steps the execution of the process for obta.i~ning a composite work piece of two work pieces which are combined with each other by way ofthe method of friction welding.
The work piece 10 is present first of all as first work piece 11 which is illustrated in the individual manufacturing steps as a cross-section according to illustrations 1. to 4. The first work piece 11 can be any desired suitable work piece which, in, the present case, exhibits a flange-type projection 17, compare illustration 1. The first work piece 11 is produced c.g.
by knowxa industrial casting processes and can consist e.g. of an aluminium or magnesium alloy or any desired other suitable working material.
11. hole 13 is drilled into the fla~a,ge-type projection 17 or inserted in any other suitable way.
Jz~ the present case, the hole 13 has a conical fortx~ and e~c.lvibits no hole bottom. 1t should be pointed out that tl~e hole of the bare 13 can also be foraxted in the first work piece 11 iz~ such a way that a bottom remains irk the hole yr the bore 13 (not illu.strated).
Subsequently, a second work piecel2 which, in the example illustrated here, is Formed in a rotations symmetrical manner and also sonically, is caused to rotate by means ifs device not shown here, compare arrow 15, and introduced into the hole 13 in the direction of movement 16, compare arrow 16, while continually maintaining the rotation movement.
As a result of the contact between the first work piece 1 l and the second work piece 12, a friction weld.i.ng process talces place which is maintained until th.e welding temperature below the melting temperature of the two work pieces is reached.
In this way, a state according to illustration. 3. of the drawing is reachEd in which the hole 13 is filed by the second work piece 12 foz~ning a .friction-welded connection between the first work piece 11 and the second work piece 12.
According to iliu.stration 4., the second work piece 12 caz~ also be provided with a through-hole 14, a.s illustrated in illustration 2., such that the second wozk piece .l2 exhibits a through-hole 14 also in the end position or in the last process step accotd.ittg to illustration 4. 1n this case, tl~e separate formation of a througla-hole l,4 by way of a drilling or milling process is not necessary.
1"lawever, it is also possible to drill or mill the through-hole 14 through the second work piece 12 after it has beets .fozxned according to illustration 3., i_e. after a friction-welded connection has been achieved between th.e first work piece 1. l and the second work piece 12.
Z,ist of, references 10 work piece 11 first work piece 12 second work piece 13 holel6ore 14 through-hole 15 arrow (rotation) X arrow (direction G of movement) 17 projection
Certain work ,pieces wl.~icl,7, are produced froyr~ certain matexi~ls by means of known, conventional manufacturing processes, such. as c.g. industrial casting processes, possess, with respect to their stability andlor load carrying capacity when used in the appropriate incorporation sites arrd/ar with respect to the appropriate incorpoxatiov pLU~poses, e.g. a desired low weight sucly as it is encountered e.g_ in the case of light xx~etal working materials, however, when choosing the waxkin,g material forming the Fork piece, they frequently do not exhibit, specifically regarding the working txaaterial, the stability and/or load carrying capacity required. or desired for the use of the work piece for the intended purpose. In order to counteract, in these cases, the low stability andlor the low load carrying capacity of such work pieces manufactured from such working materials at .least at sites of the work piece subject to high stress, these a.xeas are 'reinforced', as early as in the manufacturing process, by working materials irz order to achieve the higher stability andlor load carrying capacity of the work pieces airn~ed at, at least in these local areas. In the case of,- a work piece produced e.g. frorrx light metal using known metallurgic casting techniques, a cast i~nsextion clement is introduced into the mould at the corresponding site during the casting process and the casting material is cast around it in such a way that at Icast a local increase in stability andlor load carrying capacity is in fact achieved as intended.
In the case of metal work pieces, i.n particular, this regularly leads to incompatibilities regardi~ag the electxochernicai potentials of the working material of the work piece and the working material of the cast insertion clement and also regarding inherent stresses. As practical results with such composite work pieces have shown, this leads not only to corrosion phenomena occurring increasingly but also to the t'ormation o.f cracks as a result of the said unfavourable inherent stresses of the twa working materials ofthe two work pieces.
If such composite work pieces arc exposed to the normal envi.ronmcnt or, indeed, to the stresses caused by salt-containing, aqueous solutions, such work pieces fail within a very short time. In this respect, greatly differing physical and mechanical.
characteristics of the working material farming the work piece and of the woxki.n.g material forming the cast insertion element also play a. part in, soma respects. ~inal.ly, disadvantageous internal stresses caused by the actual casting process employed also arise in the course of production.
It is thus the task of. the present invention to provide a ,process of the above-mentioned type by means of which an increase in the stability andlax load carrying capacity of work pieces is achieved at least locally, namely in the case of work pieces which, regarding their basic configuration, have been produced by means of different, generally known and, i~
necessary, conventional production processes, it being intended to achieve also an increased terxiperature stability in the case of work pieces produced by means of manufacturing processes previously used and it being intended that the process be practicable in a cost-Effective nn.an.ner with low expenditure orx equipment.
The task is achieved acco.rdin,g to the invention by a. tlye rrst work piece being subsequently provided with a hole in the area where the stability andlor load carrying capacity are to be increased and subsequently b. a second work piece consisting of a stability andlor load carrying capacity increasing working material being introduced. into the hole and c. in this state, the second wori< piece being rubbed relative to the first work piece according to the friction welding method until the welding terrmperature is reached which is below th.e melting temperature of the twvo work pieces in order to create a Friction-welded connection between the two work pieces.
F3y z~eans of the process according to the invention, it is advantageously achieved that composite work pieces can be ,produced which exhibit, at least locally, the characteristics with respect to stability, load carrying capacity and durability at high temperatures and a high resistance to wear and tear and work pieces produced in this way can.
thus be used in areas which had previously been totally inaccessible to such work pieces. In this respect it is possible, if the first work piece, for example, consists of a llgh.t metal working material, that all the advantageous characteristics of the light meal can be utilised for the work piece as a whole, such as the law weight andlar its low density but, in addition, the stability andlor load carrying capacity and. temperature stability characteristics can also be achieved at least in the local area of the work piece which, previously, had. been accessible only to work pieces af, working materials with a high specific gravity and/or a high density or to working materials which are extremely difficult to process and to working materials which can be provided only at great costs.
Basically, the process according to the invention can be carried. out by usizag all the variants of frictia.n welding, According to an advantageous embodiment of the process, the hole in tb.e first work piece is a bore and the second work piecE exhibits a rotation-symmetrical foz~x~, tho zzxethod of friction welding being ira this case that of friction stir welding, it being possible in this case ,far friction cone welding to be used which is a special from if friction stir welding. In this way, it is possible for reinforcements to be achieved in a controlled manner in certain local areas of the first work piece which reinforcements increase the stability and/or load earryi.ng capacity of the work piece as a whole. In this way, the hole caa have either a cylindrical or conical fonx~, the rotation symm.etrieal second. work piece hawing either a corresponding cylindrical or conical form izr this case.
The hole or the bore can cross the work piece at a corresponding site of the first woxk piece;
however, it is also possible to form the .hale or the bore as a. blind hole or a blind bore such that a bottom remains in the first work piece.
According to a further advantageom embodiment of the process, the hole or the bore in the ~.rst work piece is filled at least partly by the second work piece in a connected state, i.c. it is possible to form a through-hole or a blind hole or a blind bore in the second work piece to correspond. to the shape of the second work piece before the latter is competed with the first work piece by the friction welding process.
»asically, the first work piece can be produced by employing any desired suitable production praeess. preferably, however, the First work piece i.s pxodueed in one casting maa~ufacturing process which leas the advantage that the first work piece can be higb.ly cost-cffectively mass~pxoduced using known industrial casting processes, whereas th.e second work piece which exhibits the stability and load bearing capacity characteristics aimed at specifically which are then. aimed at in the composite of the two work pieces for th,e work piece as a whole and can be rnadc use of e.g. as comrn.ereially available semi~finish.ed products, such that only minimal cost increases need. to be recorded ,fox the composite woxk piece achievable according to the invention compared with a standard work piece produced by industrial casting measures.
According to a further adwaiztageous different cmbodirn~,ertt of. tl~e invention, at least the frst work piece consists of a light metal or a light metal alloy, the light metal alloy being preferably magnesiurra or a magnesium alloy or finally advantageously the light metal aluminium or an aluminium alloy.
Alumiz~.ium and magnesium, including its corresponding alloys, play an increasingly strong part in the light construction industry, i.e. in the construction o.f motor vehicles and. in the aircraft and space industry. In the area of motor vehicle construction, iai particular, there is also the requirement, apart from the !ow density of aluminium and zr~agnesium, of being able to provide work pieces or structural parts of theses working materials in an extremely cast-effective manner such that work pieoes are already produced in this sector in particular by known industrial casting processes. Nevertheless, there is the requirement regarding these cases that they should withstand high mechanical and electrochemical stresses at least locally. According to the invention, the good castability of magnesium or magnesium.
alloys or alumiz~iuxn or alurzai.r~ium allays and their goad mechanical proaessability are combined with the properties ofthe second working material a.f the second work piece which, exhibit a high rneclzanical and electrochemical load carrying capacity but which are less oasily proeessable and much more difficult to cast - to remain with this example ~- than that of the first work piece.
The ir~ven.tian will now be described in. further detail with reference to the single drawing by way of a practical example. This shows;
in four steps the execution of the process for obta.i~ning a composite work piece of two work pieces which are combined with each other by way ofthe method of friction welding.
The work piece 10 is present first of all as first work piece 11 which is illustrated in the individual manufacturing steps as a cross-section according to illustrations 1. to 4. The first work piece 11 can be any desired suitable work piece which, in, the present case, exhibits a flange-type projection 17, compare illustration 1. The first work piece 11 is produced c.g.
by knowxa industrial casting processes and can consist e.g. of an aluminium or magnesium alloy or any desired other suitable working material.
11. hole 13 is drilled into the fla~a,ge-type projection 17 or inserted in any other suitable way.
Jz~ the present case, the hole 13 has a conical fortx~ and e~c.lvibits no hole bottom. 1t should be pointed out that tl~e hole of the bare 13 can also be foraxted in the first work piece 11 iz~ such a way that a bottom remains irk the hole yr the bore 13 (not illu.strated).
Subsequently, a second work piecel2 which, in the example illustrated here, is Formed in a rotations symmetrical manner and also sonically, is caused to rotate by means ifs device not shown here, compare arrow 15, and introduced into the hole 13 in the direction of movement 16, compare arrow 16, while continually maintaining the rotation movement.
As a result of the contact between the first work piece 1 l and the second work piece 12, a friction weld.i.ng process talces place which is maintained until th.e welding temperature below the melting temperature of the two work pieces is reached.
In this way, a state according to illustration. 3. of the drawing is reachEd in which the hole 13 is filed by the second work piece 12 foz~ning a .friction-welded connection between the first work piece 11 and the second work piece 12.
According to iliu.stration 4., the second work piece 12 caz~ also be provided with a through-hole 14, a.s illustrated in illustration 2., such that the second wozk piece .l2 exhibits a through-hole 14 also in the end position or in the last process step accotd.ittg to illustration 4. 1n this case, tl~e separate formation of a througla-hole l,4 by way of a drilling or milling process is not necessary.
1"lawever, it is also possible to drill or mill the through-hole 14 through the second work piece 12 after it has beets .fozxned according to illustration 3., i_e. after a friction-welded connection has been achieved between th.e first work piece 1. l and the second work piece 12.
Z,ist of, references 10 work piece 11 first work piece 12 second work piece 13 holel6ore 14 through-hole 15 arrow (rotation) X arrow (direction G of movement) 17 projection
Claims (7)
1. Process for increasing the stability and/or load carrying capacity of work pieces at least locally, a first work piece being first produced by means of a conventional manufacturing process characterised in that a, the first work piece is subsequently provided with a hole in the area where the stability and/or load carrying capacity are to be increased and subsequently b. a second work piece consisting of a stability and/or load carrying capacity increasing working material is introduced into the hole and c. in this state, the second work piece is robbed relative to the first work piece according to the friction welding method until the welding temperature is reached which is below the melting temperature of the two work piece in order to create a friction~welded connection between the two work pieces.
2, Process according to claim 1 characterised in that the hole in the first work piece is a bore and the second work piece exhibits a rotation-symmetrical form, the method of friction welding being in this case that of friction stir welding or friction cone welding.
3. Process according to any of claims 1 or 2 characterised in that the hole or the bore in the first work piece is filled at least partly by the second work piece in a connected state.
4. Process according to any of claims 1 to 3 characterised in that the first work piece is produced in a casting production process.
5. Process according to any of claims 1 to 4 characterised in that at least the first work piece consists of a light metal or a light metal alloy.
6, Process according to any of claims 1 to 5 characterised in that the light meal is magnesium or a magnesium alloy
7. Process according to any of claims 1 to 5 characterised in that the light metal is aluminium or an aluminium alloy.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10337971A DE10337971B4 (en) | 2003-08-19 | 2003-08-19 | Method for increasing the strength and / or load capacity of workpieces |
| DE10337971.1 | 2003-08-19 | ||
| PCT/DE2004/001521 WO2005018865A1 (en) | 2003-08-19 | 2004-07-14 | Method for increasing the stability and/or load carrying ability of work pieces by means of friction welding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2535823A1 true CA2535823A1 (en) | 2005-03-03 |
Family
ID=34201662
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002535823A Abandoned CA2535823A1 (en) | 2003-08-19 | 2004-07-14 | Method for increasing the stability and/or load carrying ability of work pieces by means of friction welding |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP1656232A1 (en) |
| JP (1) | JP2007502711A (en) |
| CA (1) | CA2535823A1 (en) |
| DE (1) | DE10337971B4 (en) |
| WO (1) | WO2005018865A1 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7726541B2 (en) * | 2008-01-15 | 2010-06-01 | Embraer-Empresa Brasileira De Aeronautica S.A. | Friction plug welding methods and systems |
| JP4981707B2 (en) * | 2008-02-26 | 2012-07-25 | 三菱重工業株式会社 | Method of overlaying circular holes |
| DE102009060756A1 (en) * | 2009-12-30 | 2011-07-07 | Lufthansa Technik AG, 22335 | Method for repairing a housing part of an aircraft engine |
| FR2973268A1 (en) * | 2011-04-01 | 2012-10-05 | Peugeot Citroen Automobiles Sa | Producing metal coating on internal surface of barrel of cylindrical casing of combustion engine vehicle, by forming conical insert, fixing insert on spindle, rotating insert at constant speed by spindle, and accosting insert in barrel |
| EP3059028A1 (en) * | 2015-02-20 | 2016-08-24 | Siemens Aktiengesellschaft | Cast iron part with a metallic functional area |
| CN105171225B (en) * | 2015-08-25 | 2017-11-14 | 西北工业大学 | The friction cold welding method for sealing of mild steel pass joint |
| GB2574377A (en) | 2018-05-29 | 2019-12-11 | Acergy France SAS | Sealing hollow structures |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3487530A (en) * | 1967-10-09 | 1970-01-06 | Abex Corp | Method of repairing casting defects |
| DE4317408C2 (en) * | 1993-05-18 | 1995-06-08 | Atotech Deutschland Gmbh | Device for reducing corrosion-related electrical contact resistances at contact points on anode and cathode rails in electrolytic baths |
| GB9521571D0 (en) * | 1995-10-20 | 1995-12-20 | Welding Inst | Improvements in friction plug extrusion |
| GB9713209D0 (en) * | 1997-06-20 | 1997-08-27 | British Aerospace | Friction welding metal components |
| US5975406A (en) * | 1998-02-27 | 1999-11-02 | The Boeing Company | Method to repair voids in aluminum alloys |
| DE10006199B4 (en) * | 2000-02-11 | 2005-05-25 | Schott Ag | Shaped body made of brittle material |
| JP2002283071A (en) * | 2001-03-23 | 2002-10-02 | Mazda Motor Corp | Method and equipment for welding metallic member |
| JP4199446B2 (en) * | 2001-09-12 | 2008-12-17 | 株式会社日立製作所 | Friction stir welding equipment |
-
2003
- 2003-08-19 DE DE10337971A patent/DE10337971B4/en not_active Expired - Fee Related
-
2004
- 2004-07-14 JP JP2006523514A patent/JP2007502711A/en not_active Withdrawn
- 2004-07-14 WO PCT/DE2004/001521 patent/WO2005018865A1/en not_active Application Discontinuation
- 2004-07-14 CA CA002535823A patent/CA2535823A1/en not_active Abandoned
- 2004-07-14 EP EP04762381A patent/EP1656232A1/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| DE10337971B4 (en) | 2006-08-17 |
| EP1656232A1 (en) | 2006-05-17 |
| WO2005018865A1 (en) | 2005-03-03 |
| JP2007502711A (en) | 2007-02-15 |
| DE10337971A1 (en) | 2005-06-09 |
| WO2005018865A8 (en) | 2006-05-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Giraud et al. | Investigation into the dissimilar friction stir welding of AA7020-T651 and AA6060-T6 | |
| Savage | Joining of advanced materials | |
| Zhou et al. | Effect of pin profile on microstructure and mechanical properties of friction stir spot welded Al-Cu dissimilar metals | |
| Venkateswarlu et al. | Tool design effects for FSW of AA7039 | |
| Deng et al. | Effects of electrode surface topography on aluminum resistance spot welding | |
| US20140286810A1 (en) | Methods of manufacturing oilfield degradable alloys and related products | |
| US6676007B2 (en) | Method for attaching metal members | |
| CA2535823A1 (en) | Method for increasing the stability and/or load carrying ability of work pieces by means of friction welding | |
| CN101176944A (en) | Friction stir welding tool and friction stir welding apparatus | |
| Mubiayi et al. | Current trends in friction stir welding (FSW) and friction stir spot welding (FSSW) | |
| US20220371067A1 (en) | Devices and Methods for Performing Shear-Assisted Extrusion and Extrusion Processes | |
| Bahemmat et al. | Mechanical, micro-, and macrostructural analysis of AA7075–T6 fabricated by friction stir butt welding with different rotational speeds and tool pin profiles | |
| Shettigar et al. | Microstructure evolution and mechanical properties of friction stir welded AA6061/rutile composite | |
| Mohammed et al. | Trend and development of semisolid metal joining processing | |
| Ma et al. | Combined strengthening mechanism of solid-state bonding and mechanical interlocking in friction self-piercing riveted AA7075-T6 aluminum alloy joints | |
| Jana et al. | Friction stir casting modification for enhanced structural efficiency: a volume in the friction stir welding and processing book series | |
| Ebenezer et al. | Impression creep behavior of different zones in friction stir welded ZE41 magnesium-rare earth alloy | |
| US20060266797A1 (en) | Method for increasing the stability and/or load carrying ability of work pieces by means of friction welding | |
| Saju et al. | Friction stir forming of dissimilar grade aluminum alloys: Influence of tool rotational speed on the joint evolution, mechanical performance, and failure modes | |
| Pinheiro | Local reinforcement of magnesium components by friction processing. Determination of bonding mechanisms and assessment of joint properties | |
| Nayeb-Hashemi et al. | The effect of processing variables on the microstructures and properties of aluminum brazed joints | |
| Hema | Experimental investigations on AA 6061 alloy welded joints by friction stir welding | |
| US5862976A (en) | Brazeable aluminum alloy cast material and method of brazing the same | |
| Argo et al. | Diecastability and Properties of Mg‐Al‐Sr Based Alloys | |
| John | Metal casting and joining |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Dead |