CN108994442A - A kind of friction stir welding method of aluminum/steel dissimilar material connection - Google Patents
A kind of friction stir welding method of aluminum/steel dissimilar material connection Download PDFInfo
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- CN108994442A CN108994442A CN201811081172.0A CN201811081172A CN108994442A CN 108994442 A CN108994442 A CN 108994442A CN 201811081172 A CN201811081172 A CN 201811081172A CN 108994442 A CN108994442 A CN 108994442A
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- stainless steel
- welding
- dissimilar material
- friction
- steel
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Classifications
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- 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
Abstract
The invention discloses a kind of friction stir welding methods of aluminum/steel dissimilar material connection; welding surface in materials with high melting point stainless steel side carries out cold spraying processing; cold spraying gas preheating temperature is 500 DEG C; powder particle selected by cold spraying is Al particle or alumina particle or both mixture; size is at 5-50 μm; powder feeding rate is 30g/min, and powder feeding distance is 25mm, and gas is accelerated to use nitrogen；Stainless steel with cold spray layer is stirred friction welding (FW) butt welding with aluminium alloy.Dissimilar material agitating friction weldering welding quality can be effectively improved and wire bondability, simple process work well, it is economical and practical, it can be realized the agitating friction weldering efficiently connection of dissimilar material, expanded the application range of agitating friction weldering significantly.
Description
Technical field
The present invention relates to the agitating friction welderings that a kind of process for treating surface more particularly to a kind of aluminum/steel dissimilar material connect
Connect method.
Background technique
Agitating friction weldering is used as a kind of novel solid phase joining technique, efficiently solves the eutectics such as traditional aluminium alloy, magnesium alloy
The Welding Problems of point material.The favor of numerous researchers has just been obtained once invention, has been widely used in aerospace, track
The fields such as traffic, shipbuilding.With its application it is more and more extensive, the following technical need is also higher and higher.More
Come under more application backgrounds, it is desirable that the interconnection technique of dissimilar material.This just proposes bigger requirement to welding process and chooses
War.It is wherein the most prominent with the Welding Problems of the stainless steel and aluminium alloy that are most widely used at present.Two kinds of materials are current to answer
With extremely wide, but for Welding Problems between the two, but it is not well solved always.This is because conventional fused weldering
It can be realized the welding of stainless steel, but the welding for aluminium alloy, conventional fused weldering can not carry out high quality connection, best solution
Certainly method is agitating friction weldering.But since the fusing point of the two differs larger, mobility difference is larger when welding, causes two kinds of materials
Material can not be connected effectively.So the agitating friction weldering quality for how effectively improving the two is always the hot spot paid close attention to.
At present solve dissimilar material one of the main method of connectivity problem be by preparing intermediate layer, it is the most frequently used
Method be by preparing solder.But the combination problem of middle layer and two kinds of materials, especially and the combination problem of stainless steel,
It has no idea to realize well, after causing agitating friction to weld, the connection of middle layer and stainless steel remains weakness zone.
Summary of the invention
The object of the present invention is to provide a kind of friction stir welding methods of aluminum/steel dissimilar material connection.
The purpose of the present invention is what is be achieved through the following technical solutions:
The friction stir welding method of aluminum/steel dissimilar material connection of the invention, comprising steps of
Firstly, the welding surface in materials with high melting point stainless steel side carries out cold spraying processing, cold spraying gas preheating temperature
It is 500 DEG C, powder particle selected by cold spraying is Al particle or alumina particle or both mixture, and size is at 5-50 μm, powder feeding
Rate is 30g/min, and powder feeding distance is 25mm, and gas is accelerated to use nitrogen；
Then, the stainless steel with cold spray layer is stirred friction welding (FW) butt welding with aluminium alloy.
As seen from the above technical solution provided by the invention, aluminum/steel dissimilar material provided in an embodiment of the present invention connects
The friction stir welding method connect can effectively improve dissimilar material agitating friction weldering welding quality and wire bondability, technique
Simply, it works well, it is economical and practical, it can be realized the agitating friction weldering efficiently connection of dissimilar material, expanded stirring significantly and rubbed
Wipe the application range of weldering.
Detailed description of the invention
Fig. 1 is that the friction stir welding method working shaft of aluminum/steel dissimilar material provided in an embodiment of the present invention connection measures
It is intended to.
Fig. 2 is that the friction stir welding method work side of aluminum/steel dissimilar material provided in an embodiment of the present invention connection shows
It is intended to.
Specific embodiment
The embodiment of the present invention will be described in further detail below.What is be not described in detail in the embodiment of the present invention is interior
Appearance belongs to the prior art well known to professional and technical personnel in the field.
The friction stir welding method of aluminum/steel dissimilar material connection of the invention, preferable specific embodiment is:
Comprising steps of
Firstly, the welding surface in materials with high melting point stainless steel side carries out cold spraying processing, cold spraying gas preheating temperature
It is 500 DEG C, powder particle selected by cold spraying is Al particle or alumina particle or both mixture, and size is at 5-50 μm, powder feeding
Rate is 30g/min, and powder feeding distance is 25mm, and gas is accelerated to use nitrogen；
Then, the stainless steel with cold spray layer is stirred friction welding (FW) butt welding with aluminium alloy.
The stainless steel includes following any: ferritic stainless steel, martensitic stain less steel, austenitic stainless steel, Ovshinsky
Body-ferritic stainless steel, precipitating carbonization stainless steel；
The aluminium alloy includes following any: fine aluminium, 2XXX series, 5XXX series, 6XXX series, 7XXX series are high-strength
Aluminium alloy.
The coating layer thickness of the cold spraying processing is 100-1000 μm.
Before carrying out cold spraying, the spray-coating surface of stainless steel is subjected to grinding process, for the coating surface after cold spraying,
Carry out surface polishing processing.
The agitating friction weldering includes following any: convention stir friction welding (FW), the weldering of double-shaft shoulder agitating friction, dead axle shoulder stir
Mix friction welding (FW).
Cold spray technique can effectively realize the surface treatment of multiple material as xenogenesis solid precipitation technology.By cold
Spraying technology prepares cold spray layer in stainless steel surface, as middle layer.It can greatly improve in during agitating friction weldering
Problem is merged in connection between interbed and stainless steel.Finally obtain the agitating friction of the good aluminum/steel dissimilar material of welding quality
Plumb joint.
The friction stir welding method of aluminum/steel dissimilar material connection of the invention, prepares middle layer by cold spray technique,
Method to effectively improve the weldering connection of dissimilar material agitating friction, first by cold spray technique in materials with high melting point stainless steel one
The welded section of side prepares one layer of fine and close middle layer, and Interlayer Alloy is identical as other side welding material, is that fine aluminium or aluminium close
Gold.Butt welding then is carried out to two kinds of different materials.The process can effectively improve dissimilar material agitating friction weldering welding matter
Amount and wire bondability.The invented technology is simple, works well, economical and practical, can be realized the agitating friction weldering of dissimilar material
The application range of agitating friction weldering has been expanded in efficiently connection significantly.
Mainly adopt the following technical scheme that
(1) it polishes the welding surface of stainless steel, guarantees the camber on surface, to realize cold spray layer in stainless steel watch
Effective deposition in face.
(2) stainless steel welded face after treatment carries out cold spraying processing.Cold spraying gas preheating temperature is 500 DEG C, institute
Selecting powder particle is pure Al particle, alumina particle or both mixture, and size is sent in 5-50 μm, powder feeding rate 30g/min
Powder distance is 25mm, and used acceleration gas is the inert gases such as nitrogen, argon gas.
(3) it is polished the coating surface after spraying, polishing treatment, has improved bond quality, and destroy oxidation simultaneously
Layer.Then friction welding (FW) is stirred with aluminium alloy to stainless steel to connect.Welding parameter is depending on material category and state.
The invention has the advantages that and effect:
(1) intermediate layer prepared by cold spraying, has good stability, intermediate layer thickness can be precisely controlled；
(2) it for cold spray layer, can be effectively improved in stir friction welding process stainless using in stainless steel welded wheat flour
Mobility between steel and middle layer, and then greatly improve aluminium/steel Friction Stir Welding joint quality；
(3) this method application range is wider, the aluminium alloy and stainless steel material suitable for various series.Adaptability simultaneously
Well, repeatability and reference value are higher.
Specific embodiment:
According to the method for the present invention, burnishing part is carried out to the stainless steel welded face Q235 with a thickness of 5mm thickness first with steel brush
Reason, to improve cold spray layer deposition quality.
Cold spraying processing then is carried out in processed stainless steel Q235 welding surface, cold spraying gas preheating temperature is 500
DEG C, selected powder particle is 2219 aluminium alloys, and for size at 5-50 μm, powder feeding rate 30g/min, powder feeding distance is 25mm, institute
The acceleration gas used is nitrogen.
Grinding process, the table of further surface middle layer are carried out to the cold spray layer surface of stainless steel Q235 welding surface deposition
Face finish, to improve welding quality.
Friction welding (FW) is stirred to 2219 aluminium alloys of stainless steel Q235 and the 5mm thickness with cold spray layer after processing
It connects.Welding parameter are as follows: mixing needle rotation speed 500r/min, speed of welding 30mm/min.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Within the technical scope of the present disclosure, any changes or substitutions that can be easily thought of by anyone skilled in the art,
It should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with the protection model of claims
Subject to enclosing.
Claims (5)
1. a kind of friction stir welding method of aluminum/steel dissimilar material connection, which is characterized in that comprising steps of
Firstly, the welding surface in materials with high melting point stainless steel side carries out cold spraying processing, cold spraying gas preheating temperature is 500
DEG C, powder particle selected by cold spraying is that Al particle or alumina particle or both mixture, size are in 5-50 μm, powder feeding rate
30g/min, powder feeding distance are 25mm, and gas is accelerated to use nitrogen；
Then, the stainless steel with cold spray layer is stirred friction welding (FW) butt welding with aluminium alloy.
2. the friction stir welding method of aluminum/steel dissimilar material connection according to claim 1, which is characterized in that described
Stainless steel includes following any: ferritic stainless steel, martensitic stain less steel, austenitic stainless steel, austenite-ferrite are stainless
Steel, precipitating carbonization stainless steel；
The aluminium alloy includes following any: fine aluminium, 2XXX series, 5XXX series, 6XXX series, the high-strength aluminium of 7XXX series close
Gold.
3. the friction stir welding method of aluminum/steel dissimilar material connection according to claim 2, which is characterized in that described
The coating layer thickness of cold spraying processing is 100-1000 μm.
4. the friction stir welding method of aluminum/steel dissimilar material according to claim 3 connection, which is characterized in that into
Before row cold spraying, the spray-coating surface of stainless steel is subjected to grinding process, for the coating surface after cold spraying, carries out surface polishing
Polishing treatment.
5. the friction stir welding method of aluminum/steel dissimilar material connection according to any one of claims 1 to 4, feature
It is, the agitating friction weldering includes following any: convention stir friction welding (FW), the weldering of double-shaft shoulder agitating friction, the stirring of dead axle shoulder
Friction welding (FW).
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109940260A (en) * | 2019-03-27 | 2019-06-28 | 四川大学 | Cold spray Ti coating auxiliary aluminum-steel dissimilar metal overlapped friction stir welding method |
| CN110303236A (en) * | 2019-08-02 | 2019-10-08 | 中国兵器工业第五九研究所 | It is a kind of for tungsten or the hot isostatic pressing diffusion connection method of tungsten alloy and high strength steel |
| CN111323484A (en) * | 2020-04-17 | 2020-06-23 | 中国飞机强度研究所 | Method for manufacturing kiss-joint defect reference test block and method for detecting by using test block |
| CN112404453A (en) * | 2020-10-06 | 2021-02-26 | 湖北超卓航空科技股份有限公司 | Additive manufacturing method of ultrafine crystal material |
| CN113474112A (en) * | 2019-02-25 | 2021-10-01 | 株式会社神户制钢所 | Method for producing dissimilar metal joined body, and dissimilar metal joined body |
| US20210308793A1 (en) * | 2020-04-03 | 2021-10-07 | Rolls-Royce Plc | Joining component bodies |
| CN114007795A (en) * | 2019-07-18 | 2022-02-01 | 株式会社神户制钢所 | Method for producing dissimilar metal joined body, and dissimilar metal joined body |
| CN115351514A (en) * | 2022-09-16 | 2022-11-18 | 中国航空制造技术研究院 | Manufacturing method of aluminum alloy ribbed wallboard |
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| CN107824950A (en) * | 2017-12-06 | 2018-03-23 | 吉林大学 | A kind of steel Al dissimilar materials plasma arc welding method |
| CN108356433A (en) * | 2018-03-13 | 2018-08-03 | 中铁隧道局集团有限公司 | TBM cutterheads and base bearing repair method |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113474112A (en) * | 2019-02-25 | 2021-10-01 | 株式会社神户制钢所 | Method for producing dissimilar metal joined body, and dissimilar metal joined body |
| CN109940260A (en) * | 2019-03-27 | 2019-06-28 | 四川大学 | Cold spray Ti coating auxiliary aluminum-steel dissimilar metal overlapped friction stir welding method |
| CN114007795A (en) * | 2019-07-18 | 2022-02-01 | 株式会社神户制钢所 | Method for producing dissimilar metal joined body, and dissimilar metal joined body |
| CN114007795B (en) * | 2019-07-18 | 2023-09-12 | 株式会社神户制钢所 | Method for producing dissimilar metal joined body and dissimilar metal joined body |
| CN110303236A (en) * | 2019-08-02 | 2019-10-08 | 中国兵器工业第五九研究所 | It is a kind of for tungsten or the hot isostatic pressing diffusion connection method of tungsten alloy and high strength steel |
| US20210308793A1 (en) * | 2020-04-03 | 2021-10-07 | Rolls-Royce Plc | Joining component bodies |
| EP3903981A1 (en) * | 2020-04-03 | 2021-11-03 | Rolls-Royce plc | Joining component bodies |
| CN111323484A (en) * | 2020-04-17 | 2020-06-23 | 中国飞机强度研究所 | Method for manufacturing kiss-joint defect reference test block and method for detecting by using test block |
| CN111323484B (en) * | 2020-04-17 | 2022-11-01 | 中国飞机强度研究所 | Method for manufacturing kiss-joint defect reference test block and method for detecting by using test block |
| CN112404453A (en) * | 2020-10-06 | 2021-02-26 | 湖北超卓航空科技股份有限公司 | Additive manufacturing method of ultrafine crystal material |
| CN115351514A (en) * | 2022-09-16 | 2022-11-18 | 中国航空制造技术研究院 | Manufacturing method of aluminum alloy ribbed wallboard |
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Application publication date: 20181214 |