CN108620762A - A method of improving Al-Cu dissimilar metal agitating friction weldering banjo fixing butt jointing quality - Google Patents
A method of improving Al-Cu dissimilar metal agitating friction weldering banjo fixing butt jointing quality Download PDFInfo
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- CN108620762A CN108620762A CN201810391174.3A CN201810391174A CN108620762A CN 108620762 A CN108620762 A CN 108620762A CN 201810391174 A CN201810391174 A CN 201810391174A CN 108620762 A CN108620762 A CN 108620762A
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- Prior art keywords
- agitating friction
- welding
- dissimilar metal
- banjo fixing
- weldment
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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
- B23K33/00—Specially-profiled edge portions of workpieces for making soldering or welding connections; Filling the seams formed thereby
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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
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- Mechanical Engineering (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
Abstract
The invention discloses a kind of methods improving Al Cu dissimilar metal agitating friction weldering banjo fixing butt jointing quality, specially first it will be processed into the toothed edge being mutually twisted for the edge of the butt joint edge of the aluminium weldment and brazing part of welding, the weldment of both sides is docked along toothed edge later, is stirred friction welding later.Not only processing method is simple by the present invention, only need to simply be machined, of low cost；And the appearance of weld of Al Cu dissimilar metal agitating friction welderings can be significantly improved, by improving Al Cu dissimilar metals metal mixed degree in the welding process and Plastic Flow behavior；Simultaneously by increasing Al Cu weld interface areas, increases connector bearing capacity, change distributions of the brittleness IMC along interface, significantly improve the mechanical property of connector.
Description
Technical field
The invention belongs to dissimilar metal agitating friction weldering fields, and in particular to a kind of raising Al-Cu dissimilar metal agitating friction welderings
The method of banjo fixing butt jointing quality.
Background technology
FSW technologies are by Britain's institute of welding (TWI) in a kind of Solid-phase welding technology of invention in 1991.FSW is in addition to welding
Aluminium alloy, magnesium alloy, copper alloy, titanium alloy etc. illustrate great advantage, and other sides are compared for the welding of dissimilar metal
Method has the advantage of bigger.Al-Cu Dissimilar metal joints have broad application prospects in power electronics and automotive engineering field, but
The welding of Al-Cu also has great technical barrier not yet to solve at present, as welding fabrication is poor, welding process stirring-head is seriously viscous glutinous
Aluminium leads to that welding process can not continue, strength of joint is low and substantially without elongation percentage, tension failure along interface IMC etc..Based on above-mentioned
Problem Al-Cu dissimilar welded joints are not engineered application also at present.
Currently, in order to promote the welding quality of Al-Cu dissimilar metal FSW connectors, domestic and international researcher expands largely
Research work has studied following process, such as：Increase barrier layer [Liu H J, Shen J J, Xie S, et al.Weld
appearance and microstructural characteristics of friction stir butt barrier
welded joints of aluminium alloy to copper[J].Science and Technology of
Welding and Joining,2013,17(2):104-110.], the servo-actuated rolling of postwelding improve tissue [CN 106181020A],
Copper side add external heat source [influence [J] that the such as Zhao Pengcheng external heat sources dock Solder for Al-Cu Joint Welding agitating friction weldering welding journal, 2017,38
(6):69-72.], [gold and jade spends molding and the interface of equal two pass time agitating friction postwelding Cu-Al connectors to two pass time agitating friction weldering
Organize [J] Lanzhou University of Science ＆ Technologys journal, 2017,43 (4):28-32.], stirring-head biasing [I,Loureiro A,
Verdera D,et al.Influence of Tool Offsetting on the Structure and Morphology
of Dissimilar Aluminum to Copper Friction-Stir Welds[J].Metallurgical&
Materials Transactions A,2012,43(13):5096-5105.] etc. be not apparent from improve Al-Cu dissimilar metals stir
The mechanical performance for mixing the welding quality of friction welding joint, especially connector does not improve significantly.Therefore the present invention provides one
The method that kind improves Al-Cu dissimilar metal agitating friction weldering banjo fixing butt jointing quality.
Invention content
In view of the above-mentioned problems, the present invention proposes a kind of method improving Al-Cu dissimilar metal agitating friction weldering banjo fixing butt jointing quality.
It realizes above-mentioned technical purpose, reaches above-mentioned technique effect, the invention is realized by the following technical scheme：
A method of Al-Cu dissimilar metal agitating friction weldering banjo fixing butt jointing quality is improved, is included the following steps：
1) toothed edge being mutually twisted will be processed into for the edge of the butt joint edge of the aluminium weldment and brazing part of welding；
2) weldment of both sides is docked along toothed edge, is stirred friction welding later.
As a further improvement on the present invention, the zigzag fashion for the toothed edge processed is triangle, trapezoidal or curvilinear circular
Any one.
As a further improvement on the present invention, after the toothed edge of both sides is mutually twisted, the saw inter-lobe clearance of any position be less than or
Equal to 0.3mm.
As a further improvement on the present invention, made tooth width is the 1/3~1/2 of weldment thickness.
As a further improvement on the present invention, in welding process, the mixing needle is located at aluminium weldment side, with toothed edge
The shortest distance is 0.8~1mm.
As a further improvement on the present invention, further include being surface-treated to the weldment for completing step 1), at the surface
Reason includes first being processed by shot blasting to jagged edges, uses alcohol or acetone to carry out cleaning treatment to metal surface later.
As a further improvement on the present invention, the aluminium weldment is any type of fine aluminium part or aluminium alloy, the copper
Weldment is any type of fine copper part or copper alloy.
As a further improvement on the present invention, the method is suitable for the welding of plank, tubing or proximate matter any shape.
Beneficial effects of the present invention：Not only processing method is simple by the present invention, only need to simply be machined, of low cost；And
The appearance of weld that Al-Cu dissimilar metal agitating friction welderings can be significantly improved was being welded by improving Al-Cu dissimilar metals weld seam
Metal mixed degree in journey and Plastic Flow behavior, can significantly improve the mechanical property of connector；Simultaneously by increasing Al-Cu welding
Interfacial area increases connector bearing capacity, changes distributions of the brittleness IMC along interface, significantly improve the mechanical property of connector
Energy.
Description of the drawings
Fig. 1 is the schematic diagram of the weldment with toothed edge after the present invention is processed；
Fig. 2 is the schematic diagram that the heterogeneous wlding parts of Al-Cu dock as required along toothed edge；
Fig. 3 carries out welding schematic diagram using the method for agitating friction welding to heterogeneous Al-Cu metals.
Specific implementation mode
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to embodiments, the present invention is carried out
It is further described.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to limit
The present invention.
The application principle of the present invention is explained in detail below in conjunction with the accompanying drawings.
Embodiment 1
1) weldment of the processing with toothed edge：Take long 100mm, the 6061-T6 aluminium alloys and T2 copper coin materials of wide 50mm, thick 4mm each
One piece, trapezoidal sawtooth processed along butt welding side to this two plates, a length of 3.00mm of trapezoidal long side, short side are a length of
1.27mm, a height of 1.5mm, each zigzag intervals 1.5mm.
It is polished with sand paper the oxide skin on removal welding and toothed edge surface, then removes the impurity such as greasy dirt of weldment with alcohol wipe.
2) it is stirred friction welding (FW)：Above-mentioned two weldments handled well are mutually twisted together along toothed edge docking first, docking
Sawtooth is not allow for misalignment and offset, and maximum butt-joint clearance is less than 0.2mm.Then stirring will be fixed on to the test plate (panel) level connected
It is welded on friction-welding machine jig.
The specific process parameter of welding is：The speed of mainshaft is 800rpm, and stirring tool gait of march is 50mm/min, welding direction
It is perpendicular to the direction of plate rolling.Stirring-head used is cone, and a diameter of 14mm of the shaft shoulder, mixing needle is band having three pyramidal faces and spiral shell
The cone of line, a diameter of φ 4 of smallest end, welding inclination angle are 2 °.In welding process, aluminium sheet is positioned over to the advance of welding direction
Side, the other side is copper coin, while mixing needle sets to 0 .8mm to Al lateral deviations.
Embodiment 2
1) weldment of the processing with toothed edge：Take long 100mm, 7075 aluminium alloys and brass sheet material each one of wide 50mm, thick 5mm
Block processes trapezoidal sawtooth to this two plates along butt joint edge, and trapezoidal long side is 3.00mm, short side 1.27mm, a height of
1.5mm, each zigzag intervals 1.5mm.
It is polished with sand paper the oxide skin of removal face of weld, then removes the impurity such as greasy dirt of test plate (panel) with alcohol wipe.
2) it is stirred friction welding (FW)：By two test plate (panel)s handled well along toothed edge to connecting, docking sawtooth is not allow for misalignment and partially
It moves, maximum butt-joint clearance is no more than 0.25mm.Then friction stir welding machine jig will be fixed on to the test plate (panel) level connected
On welded,
The specific process parameter of welding is：The speed of mainshaft is 800rpm, and stirring tool gait of march is 30mm/min, welding direction
It is perpendicular to the direction of plate rolling, stirring-head used is cone, and a diameter of 16mm of the shaft shoulder, mixing needle is band having three pyramidal faces and spiral shell
The cone of line, a diameter of φ 4.5 of smallest end, welding inclination angle are 2 °.Aluminium sheet is positioned over the advanced side of welding direction, and the other side is
Copper coin, while mixing needle biases 1mm to the sides Al.
Embodiment 3
1) weldment of the processing with toothed edge：Take φ 500, long 250mm, the commercial-purity aluminium of thickness 3mm and T2 red copper pipe fittings, to this two
Pipe fitting uniformly processes trapezoidal sawtooth along docking ring, and trapezoidal sawtooth long side is 3.00mm, short side 1.27mm, a height of 1.5mm.
It is polished with sand paper the oxide skin of removal face of weld, then removes the impurity such as greasy dirt of test plate (panel) with alcohol wipe.
2) it is stirred friction welding (FW)：By the above-mentioned two pipe fittings handled well along toothed edge to connecting, docking sawtooth is not allow for misalignment
And offset, maximum butt-joint clearance are less than 0.15mm.Then the weldment clamping connected will be welded in girth joint friction stir welding machine
On welded.
The specific process parameter of welding is：The speed of mainshaft is 600rpm, and stirring tool gait of march is 50mm/min.Stirring used
Head is cone, a diameter of 12mm of the shaft shoulder.Mixing needle is the cone with having three pyramidal faces and screw thread, a diameter of φ 3.5 of smallest end, weldering
It is 2 ° to connect inclination angle.Aluminium is positioned over the advanced side of welding direction, and the other side is copper, while mixing needle sets to 0 .8mm to Al lateral deviations.
The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention.The technical staff of the industry
It should be appreciated that the present invention is not limited to the above embodiments, the above embodiments and description only describe the present invention
Principle, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these variation and
Improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention is by appended claims and its equivalent
Object defines.
Claims (8)
1. a kind of method improving Al-Cu dissimilar metal agitating friction weldering banjo fixing butt jointing quality, includes the following steps：
1) toothed edge being mutually twisted will be processed into for the edge of the butt joint edge of the aluminium weldment and brazing part of welding；
2) weldment of both sides is docked along toothed edge, is stirred friction welding later.
2. a kind of method improving Al-Cu dissimilar metal agitating friction weldering banjo fixing butt jointing quality according to claim 1,
It is characterized in that：The zigzag fashion for the toothed edge processed be triangle, it is trapezoidal or curvilinear circular any one.
3. a kind of method improving Al-Cu dissimilar metal agitating friction weldering banjo fixing butt jointing quality according to claim 1,
It is characterized in that：After the toothed edge of both sides is mutually twisted, the saw inter-lobe clearance of any position is less than or equal to 0.3mm.
4. a kind of method improving Al-Cu dissimilar metal agitating friction weldering banjo fixing butt jointing quality according to claim 1,
It is characterized in that：Made tooth width is the 1/3~1/2 of weldment thickness.
5. a kind of method improving Al-Cu dissimilar metal agitating friction weldering banjo fixing butt jointing quality according to claim 1,
It is characterized in that：In welding process, the mixing needle is located at aluminium weldment side, with the shortest distance of toothed edge be 0.8~
1mm。
6. a kind of method improving Al-Cu dissimilar metal agitating friction weldering banjo fixing butt jointing quality according to claim 1,
It is characterized in that：Further include being surface-treated to the weldment for completing step 1), the surface treatment includes first to jagged edges
It is processed by shot blasting, uses alcohol or acetone to carry out cleaning treatment to metal surface later.
7. a kind of method improving Al-Cu dissimilar metal agitating friction weldering banjo fixing butt jointing quality according to claim 1,
It is characterized in that：The aluminium weldment is that any type of the fine aluminium part either aluminium alloy brazing part is fine copper part or copper
Any type of alloy.
8. according to a kind of raising Al-Cu dissimilar metals agitating friction weldering banjo fixing butt jointing quality of claim 1-7 any one of them
Method, it is characterised in that：The method is suitable for the welding of plank, tubing or proximate matter any shape.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810391174.3A CN108620762B (en) | 2018-04-27 | 2018-04-27 | Method for improving quality of Al-Cu dissimilar metal friction stir welding butt joint |
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| CN201810391174.3A CN108620762B (en) | 2018-04-27 | 2018-04-27 | Method for improving quality of Al-Cu dissimilar metal friction stir welding butt joint |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110253805A (en) * | 2019-06-28 | 2019-09-20 | 江苏亿豪塑业有限公司 | A kind of seamless welding formula high intensity tetrafluoro plate and its processing method |
| CN110788472A (en) * | 2019-09-27 | 2020-02-14 | 国网天津市电力公司电力科学研究院 | Friction stir welding process method suitable for butt-joint type copper-aluminum transition wire clamp |
| CN111786227A (en) * | 2019-04-05 | 2020-10-16 | 阿发屋株式会社 | Method for manufacturing bus bar by friction stir welding |
| CN112077433A (en) * | 2020-07-20 | 2020-12-15 | 江西理工大学 | Method for improving mechanical bonding strength of FSW joint |
| CN114192944A (en) * | 2021-12-28 | 2022-03-18 | 江苏新蓝天钢结构有限公司 | Full penetration back-gouging-free I-shaped steel welding method introducing welding predeformation |
| WO2023005025A1 (en) * | 2021-07-30 | 2023-02-02 | 江苏徐工工程机械研究院有限公司 | Engaging structure for use in plate welding, and welding device and method without welding spot alignment |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111786227A (en) * | 2019-04-05 | 2020-10-16 | 阿发屋株式会社 | Method for manufacturing bus bar by friction stir welding |
| CN110253805A (en) * | 2019-06-28 | 2019-09-20 | 江苏亿豪塑业有限公司 | A kind of seamless welding formula high intensity tetrafluoro plate and its processing method |
| CN110253805B (en) * | 2019-06-28 | 2020-05-22 | 江苏亿豪塑业股份有限公司 | Seamless welding type high-strength PTFE (polytetrafluoroethylene) plate and processing method thereof |
| CN110788472A (en) * | 2019-09-27 | 2020-02-14 | 国网天津市电力公司电力科学研究院 | Friction stir welding process method suitable for butt-joint type copper-aluminum transition wire clamp |
| CN112077433A (en) * | 2020-07-20 | 2020-12-15 | 江西理工大学 | Method for improving mechanical bonding strength of FSW joint |
| WO2023005025A1 (en) * | 2021-07-30 | 2023-02-02 | 江苏徐工工程机械研究院有限公司 | Engaging structure for use in plate welding, and welding device and method without welding spot alignment |
| CN114192944A (en) * | 2021-12-28 | 2022-03-18 | 江苏新蓝天钢结构有限公司 | Full penetration back-gouging-free I-shaped steel welding method introducing welding predeformation |
| CN114192944B (en) * | 2021-12-28 | 2023-09-22 | 江苏新蓝天钢结构有限公司 | Full penetration back-gouging-free I-steel welding method introducing welding pre-deformation |
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