CN107790870B - A kind of friction stir welding method reducing the abrasion of materials with high melting point stirring-head - Google Patents
A kind of friction stir welding method reducing the abrasion of materials with high melting point stirring-head Download PDFInfo
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- CN107790870B CN107790870B CN201711219967.9A CN201711219967A CN107790870B CN 107790870 B CN107790870 B CN 107790870B CN 201711219967 A CN201711219967 A CN 201711219967A CN 107790870 B CN107790870 B CN 107790870B
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- mixing needle
- welding
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- 238000003466 welding Methods 0.000 title claims abstract description 52
- 239000000463 material Substances 0.000 title claims abstract description 49
- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000002844 melting Methods 0.000 title claims abstract description 20
- 230000008018 melting Effects 0.000 title claims abstract description 20
- 238000005299 abrasion Methods 0.000 title claims abstract description 18
- 238000003756 stirring Methods 0.000 title claims abstract description 15
- 238000002156 mixing Methods 0.000 claims abstract description 45
- 230000000149 penetrating effect Effects 0.000 claims abstract 2
- 230000006835 compression Effects 0.000 claims description 8
- 238000007906 compression Methods 0.000 claims description 8
- 230000001360 synchronised effect Effects 0.000 claims description 6
- 229910001069 Ti alloy Inorganic materials 0.000 claims description 5
- 229910000881 Cu alloy Inorganic materials 0.000 claims 1
- 238000000605 extraction Methods 0.000 claims 1
- 238000007373 indentation Methods 0.000 claims 1
- 239000010935 stainless steel Substances 0.000 claims 1
- 229910001220 stainless steel Inorganic materials 0.000 claims 1
- 230000018984 mastication Effects 0.000 abstract 1
- 238000010077 mastication Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 6
- 238000005476 soldering Methods 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012071 phase Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 201000009240 nasopharyngitis Diseases 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
Classifications
-
- 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
- B23K20/1225—Particular aspects of welding with a non-consumable tool
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
Abstract
A kind of friction stir welding method reducing the abrasion of materials with high melting point stirring-head, before starting welding, inside mixing needle pumpback to the shaft shoulder, high-speed rotating stirring-head is pressed into certain press-in speed by welding plate material, after reaching specified pressure depth, stirring-head stays for some time, after materials to be welded sufficiently softens, mixing needle is stretched out inside the shaft shoulder with certain stretching speed and rotation speed and is penetrated inside materials to be welded, extension elongation is to subtract 0.1 ~ 0.2mm by weldering plate thickness, after needle extension elongation to be mixed reaches predetermined value, stirring-head is whole with the forward movement of identical rotation speed, it completes by the connection of welding plate material, after the completion of welding, stirring-head is integrally extracted from materials to be welded.The welding method is compared with traditional friction stir welding method, it is preheated first using the shaft shoulder to by weldering materials with high melting point, it stretches out mixing needle again after materials to be welded hot mastication, effectively avoids mixing needle in the abrasion for penetrating the stage, extend the service life of stirring-head.
Description
Technical field
The invention belongs to welding fields, are related to a kind of Friction Stir Welding side of reduction materials with high melting point stirring-head abrasion
Method.
Background technique
Agitating friction weldering is a kind of novel solid phase joining technique, and principle is that materials to be welded is revolved in the high speed of stirring-head
Turn that Plastic Flow, interface under the collective effect of friction heat production and axial compression be broken and a kind of solid diffusivity for being formed.
Compared to traditional melt welding method, agitating friction soldering set has heat input, welding deformation small, excellent in mechanical performance
The features such as.Low melting material has been widely used in it, such as the welding of Al alloys andMg alloys.And in the welding field of materials with high melting point, by
It is high in materials to be welded fusing point, hardness is high, flow stress is big, harsh heat engine load effect is lower and fast in the welding process for stirring-head
Fast wear-out failure, therefore the service life of stirring-head short limits agitating friction welding technology answering in materials with high melting point welding field
With.
Summary of the invention
The short problem of stirring-head serious wear, service life, provides when the present invention is welded for materials with high melting point agitating friction
A kind of friction stir welding method reducing the abrasion of materials with high melting point stirring-head.
For the abrasion for reducing stirring-head in materials with high melting point welding process, the present invention is achieved through the following technical solutions
's.
A kind of friction stir welding method reducing the abrasion of materials with high melting point stirring-head, includes the following steps:
The first step, the end inside mixing needle pumpback to the shaft shoulder to mixing needle is flushed with shaft shoulder inner hole or the slightly below shaft shoulder
Inner hole.
Second step opens agitating friction soldering equipment, sets main shaft rotary speed, and stirring-head is displaced downwardly to materials to be welded surface,
Stirring-head is pressed by materials to be welded using the press-in speed of 0.5mm/min ~ 2mm/min, compression distance is 0.1 ~ 0.3mm.
Third step, after the compression distance for reaching setting, stirring-head stays for some time in the original location, and the residence time is generally
3~30s。
4th, after materials to be welded sufficiently softens, mixing needle is penetrated with the press-in speed of 1mm/min ~ 15mm/min and is welded
Material internal, mixing needle extension elongation, which is equal to, subtracts 0.1 ~ 0.2mm by weldering plate thickness.
5th step, when mixing needle extension elongation reaches designated value, the shaft shoulder moves completion along interface track together with mixing needle
Welding.
6th step, after the completion of welding, if weld seam is non-closed girth joint, the shaft shoulder is synchronous from materials to be welded together with mixing needle
Extract, if weld seam is girth joint, can take mixing needle with the mode of weldering gradually pumpback realize girth joint without keyhole agitating friction
Weldering.
A kind of friction stir welding method reducing the abrasion of materials with high melting point stirring-head provided by the invention, with the prior art
It compares, the advantage is that:
One, by way of being then pressed into materials to be welded again inside mixing needle pumpback to the shaft shoulder, with the shaft shoulder to materials to be welded
It is preheated, stretching mixing needle can effectively reduce stirring-head cold conditions and penetrate stage stirring-head after materials to be welded sufficiently softens
Abrasion, to extend the service life of stirring-head.
Two, after the length abrasion of mixing needle, it can be continued to use by adjusting the extension elongation of mixing needle, meet product
Through welding requirement.
Three, the friction stir welding method proposed by the present invention for reducing the abrasion of materials with high melting point stirring-head has operation letter
Singly, the features such as adaptable.
Detailed description of the invention
Fig. 1 is the welding initial stage schematic diagram of the embodiment of the present invention；
Fig. 2 is that the welding of the embodiment of the present invention is pressed into stage schematic diagram；
Fig. 3 is the welding dwell phase schematic diagram of the embodiment of the present invention；
Fig. 4 is that the mixing needle of the embodiment of the present invention stretches out stage schematic diagram；
Fig. 5 is the stabilization welding stage schematic diagram of the embodiment of the present invention；
Fig. 6 is the welding ending phase schematic diagram of the embodiment of the present invention.
In figure: 1 is mixing needle, and 1-1 is the mixing needle of stirring-head, and 1-2 is the shaft shoulder of stirring-head, and 2 is by welding plate materials.
Specific embodiment
Elaborate below to the embodiment of the present invention: the present embodiment carries out under the premise of the technical scheme of the present invention
Implement, the detailed implementation method and specific operation process are given, but protection scope of the present invention is not limited to following implementation
Example.
As shown in Fig. 1 ~ 6, a kind of Friction Stir Welding reducing the abrasion of materials with high melting point stirring-head provided in this embodiment
Method includes the following steps:
The first step puts down the inner hole inside mixing needle 1-1 pumpback to shaft shoulder 1-2 to the end of mixing needle 1-1 and shaft shoulder 1-2
Together or slightly above inner hole.
Second step opens agitating friction soldering equipment, sets main shaft rotary speed, and stirring-head 1 is displaced downwardly to 2 table of materials to be welded
Stirring-head 1 is pressed into materials to be welded 2 using the press-in speed of 0.5mm/min ~ 2mm/min by face, and compression distance is 0.1 ~ 0.3mm.
Third step, after the compression distance for reaching setting, stirring-head 1 stays for some time in the original location, and the residence time is general
For 3 ~ 30s.
4th, after the sufficiently softening of materials to be welded 2, mixing needle 1-1 is penetrated with the press-in speed of 1mm/min ~ 15mm/min
Inside materials to be welded 2, mixing needle 1-1 extension elongation is equal to 2 thickness of materials to be welded-(0.1mm ~ 0.2mm).
5th step, when mixing needle 1-1 extension elongation reaches designated value, shaft shoulder 1-2 is together with mixing needle 1-1 along interface track
It is mobile to complete welding.
6th step, after the completion of welding, if weld seam is non-closed girth joint, shaft shoulder 1-2 is synchronous from being welded together with mixing needle 1-1
It is extracted out in material 2, if weld seam is girth joint, mixing needle can be taken to realize stirring without keyhole for girth joint with the mode for welding gradually pumpback
Mix friction welding (FW).
Specifically:
The first step puts down the inner hole inside mixing needle 1-1 pumpback to shaft shoulder 1-2 to the end of mixing needle 1-1 and shaft shoulder 1-2
Together or slightly above inner hole.
Second step opens agitating friction soldering equipment, sets main shaft rotary speed 400rpm, and stirring-head 1 is displaced downwardly to the titanium of 2mm
Stirring-head 1 is pressed into titanium alloy plate 2 using the press-in speed of 0.5mm/min by 2 surface of sheet alloy, and compression distance is
0.2mm。
Third step, after the compression distance for reaching setting, the residence time 10s in the original location of stirring-head 1.
4th, after the sufficiently softening of titanium alloy plate 2, mixing needle 1-1 penetrates titanium alloy 2 with the press-in speed of 10mm/min
Inside, mixing needle 1-1 extension elongation are 1.8mm.
5th step, when mixing needle 1-1 extension elongation reaches 1.8mm, shaft shoulder 1-2 is together with mixing needle 1-1 along with 100mm/min
Speed of welding along interface move completion welding.
6th step, after the completion of welding, shaft shoulder 1-2 is extracted from titanium alloy plate 2 together with mixing needle 1-1 is synchronous.
It is welded using the above method, cold conditions penetrates the abrasion of stage stirring-head when reduced materials with high melting point welds
Amount, improves the service life of stirring-head.
Claims (4)
1. a kind of friction stir welding method for reducing the abrasion of materials with high melting point stirring-head, which comprises the following steps:
The first step, to being flushed with shaft shoulder inner hole or slightly above shaft shoulder inner hole inside mixing needle pumpback to the shaft shoulder before starting to weld；
Second step, the shaft shoulder and mixing needle Integral synchronous rotate and are pressed into materials to be welded with certain press-in speed；The second step
In, the shaft shoulder is 0.5mm/min ~ 2mm/min together with the speed of the indentation materials to be welded of mixing needle, and the compression distance of stirring-head is
0.1mm~0.3mm；
Third step, after stirring-head reaches specified pressure depth, stirring-head is 3 ~ 30s penetrating the position residence time；
4th step, after materials to be welded sufficiently softens, mixing needle is stretched out inside the shaft shoulder with certain speed and is penetrated by wlding
Material is internal；
5th step, after mixing needle extension elongation reaches predetermined value, stirring-head is welded along welding direction；
6th step, after the completion of welding the shaft shoulder together with mixing needle it is synchronous lifted from materials to be welded or mixing needle gradually nothing is realized in pumpback
Keyhole welding, wherein after the completion of welding, if weld seam is non-closed girth joint, the shaft shoulder is synchronous from materials to be welded together with mixing needle
Extraction takes mixing needle to realize welding without keyhole agitating friction for girth joint with the mode for welding gradually pumpback if weld seam is girth joint.
2. a kind of friction stir welding method for reducing the abrasion of materials with high melting point stirring-head as claimed in claim 1, special
Sign is that the welding method can be used for the welding of titanium alloy, stainless steel, copper alloy.
3. a kind of friction stir welding method for reducing the abrasion of materials with high melting point stirring-head as claimed in claim 1, special
Sign is, in the 4th step, the speed that penetrates of mixing needle is 1mm/min ~ 15mm/min.
4. a kind of friction stir welding method for reducing the abrasion of materials with high melting point stirring-head as claimed in claim 1, special
Sign is, in the 5th step, the extension elongation of mixing needle, which is equal to, subtracts 0.1 ~ 0.2mm by weldering plate thickness.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711219967.9A CN107790870B (en) | 2017-11-29 | 2017-11-29 | A kind of friction stir welding method reducing the abrasion of materials with high melting point stirring-head |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711219967.9A CN107790870B (en) | 2017-11-29 | 2017-11-29 | A kind of friction stir welding method reducing the abrasion of materials with high melting point stirring-head |
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| Publication Number | Publication Date |
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| CN107790870A CN107790870A (en) | 2018-03-13 |
| CN107790870B true CN107790870B (en) | 2019-07-16 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111633321A (en) * | 2020-06-10 | 2020-09-08 | 上海航天设备制造总厂有限公司 | Friction stir welding method for dissimilar metal butt joint |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11534854B2 (en) * | 2018-06-06 | 2022-12-27 | Osaka University | Friction stir welding tool and friction stir welding method |
| CN110856884A (en) * | 2018-08-24 | 2020-03-03 | 无锡雅斯格精密机械有限公司 | Friction welding process |
| CN111531267A (en) * | 2020-05-26 | 2020-08-14 | 上海航天设备制造总厂有限公司 | Circular seam keyhole-free double-shaft-shoulder friction stir welding method |
| JP7596088B2 (en) * | 2020-07-09 | 2024-12-09 | 株式会社Uacj | Friction stir spot welding apparatus and friction stir spot welding method |
| CN114273770A (en) * | 2022-01-10 | 2022-04-05 | 上海工程技术大学 | Closed needle-free friction stir spot welding device and method |
| CN114633013A (en) * | 2022-02-25 | 2022-06-17 | 北京索德瀚智能科技有限公司 | Spot welding structure of dissimilar materials, friction spot welding method and device thereof |
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| US9511445B2 (en) * | 2014-12-17 | 2016-12-06 | Aeroprobe Corporation | Solid state joining using additive friction stir processing |
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| JP2000343243A (en) * | 1999-06-03 | 2000-12-12 | Showa Alum Corp | Tools for friction stir welding |
| CN101450418A (en) * | 2007-11-30 | 2009-06-10 | 中国科学院金属研究所 | Stirring friction-welding technique capable of increasing weldability of aluminum base composite material |
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