CN108838539A - A kind of method for laser welding of hard aluminium alloy thin plate - Google Patents
A kind of method for laser welding of hard aluminium alloy thin plate Download PDFInfo
- Publication number
- CN108838539A CN108838539A CN201810827223.3A CN201810827223A CN108838539A CN 108838539 A CN108838539 A CN 108838539A CN 201810827223 A CN201810827223 A CN 201810827223A CN 108838539 A CN108838539 A CN 108838539A
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- aluminium alloy
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- thin plate
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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
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/20—Bonding
- B23K26/21—Bonding by welding
- B23K26/24—Seam 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
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/60—Preliminary treatment
-
- 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
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mechanical Engineering (AREA)
- Plasma & Fusion (AREA)
- Laser Beam Processing (AREA)
Abstract
The invention discloses a kind of method for laser welding of hard aluminium alloy thin plate comprising following steps：1) workpiece A and workpiece B to be welded are taken, the depth sinking vertical plane equal with workpiece B thickness is processed on workpiece A；2) by workpiece B be placed on sinking vertical plane and with workpiece B butt junction location；3) it processes to form a double V-groove in face of weld using planing tool mechanism；4) using the surface area of wire brush polishing workpiece A and workpiece B；5) workpiece A and workpiece B are welded using Laser Overlaying welder, wherein laser power is 2~6kw, the gage of wire of wire feed is 0.8~1.2mm, and wire feed rate controls the face of weld in 2~10m/min, after connecting and is higher than 0.1~0.2mm of workpiece A and workpiece B surface；6) weld seam being welded is flattened and is polished using polishing mechanism.The present invention provides good welding surroundings, ensures welding quality, while eliminating the scale removal process of welding front and back, realizes the flawless sunken welding of the big almag of crackle tendency.
Description
【Technical field】
The invention belongs to technical field of laser welding, more particularly to a kind of laser welding side of hard aluminium alloy thin plate
Method.
【Background technique】
As lightweight material, application is more and more extensively, especially to manufacture in automobile and light rail for aluminium, magnesium, titanium and its alloy
Industry.Weld blowhole and crackle are the welding difficulties between aluminium, magnesium and its alloy, between the aluminium of dissimilar material, magnesium and its alloy
Weld crack tendency it is bigger.In addition, special welding position and welding structure are even more to influence whether welding hot tearing degree.Laser
Filler wire welding mode is to solve being preferably selected for weld blowhole and crackle, but filler wire welding mode will bring after welding treatment cost
The problem of increasing.
Therefore, it is necessary to provide a kind of method for laser welding of new hard aluminium alloy thin plate to solve the above problems.
【Summary of the invention】
The main purpose of the present invention is to provide a kind of method for laser welding of hard aluminium alloy thin plate, provide good weldering
Environment is connect, ensures welding quality, while eliminating the scale removal process of welding front and back, realizes the big almag of crackle tendency
Flawless sunken welding.
The present invention is achieved through the following technical solutions above-mentioned purpose：A kind of method for laser welding of hard aluminium alloy thin plate,
It includes the following steps：
1) workpiece A and workpiece B to be welded are taken, it is equal with the workpiece B thickness that a depth is processed on the workpiece A
Sinking vertical plane；
2) the workpiece B is placed on the sinking vertical plane and carries out butt junction location with fixture with the workpiece B；
3) it processes to form a double V-groove in face of weld using planing tool mechanism；
4) region on weld seam both sides is surrounded using the polish upper surface of the workpiece A and the workpiece B of circular steel wire brush；
5) the workpiece A and the workpiece B are welded using Laser Overlaying welder, wherein laser power is 2
~6kw, the gage of wire of wire feed are 0.8~1.2mm, and wire feed rate controls the face of weld in 2~10m/min, after being welded
Higher than 0.1~0.2mm of workpiece A and workpiece B surface；
6) weld seam being welded is flattened and is polished using polishing mechanism.
Further, the thickness of the workpiece A be greater than 3mm, the workpiece B with a thickness of 0.5~2mm.
Further, the workpiece A and workpiece B is the hard aluminium alloy material of two kinds of different trades mark.
Further, the weld penetration after step 5) is welded is greater than the thickness of the workpiece B.
Further, the planing tool mechanism and the circular steel wire brush are arranged on same mounting plate, mounting plate setting
A driving device movable end and by the driving device drives edge bead direction it is mobile.
Further, the polishing mechanism is arranged on the Laser Overlaying welder, and the polishing mechanism includes horse
It reaches, driven the polishing wheel rotated by the motor, and with the Laser Overlaying welder synchronizing moving.
Further, the Laser Overlaying welder includes laser, wire feeder and protective gas blowning installation.
Further, the angle of the double V-groove is 30~60 °, and the depth of the double V-groove is the workpiece B thickness
10%~30%.
Further, step 5) weld when, by the protective gas blowning installation be blown into inert gas to molten bath into
Row protection, wherein inert gas is 99.99%Ar, and gas flow is controlled in 10~25L/min.
Compared with prior art, a kind of beneficial effect of the method for laser welding of hard aluminium alloy thin plate of the present invention is：
By the mutual cooperation of two pairs of resin spring jackscrews and fine tuning screw thread pair, the regulating time of the homocentric pencil of rays is greatly improved,
Reduce workpiece processing cost；It is further finely tuned by finely tuning screw thread pair, using its very small tooth away from feature, greatly
The precision of fine tuning is improved greatly, to improve the stability and reliability of laser welding system.
【Detailed description of the invention】
Fig. 1 is the positional structure schematic diagram in the embodiment of the present invention before welding workpiece welding；
Fig. 2 is the structural schematic diagram in the embodiment of the present invention after welding workpiece welding；
Fig. 3 is the structural schematic diagram that structure is used in welding in the embodiment of the present invention；
Digital representation in figure：
1 sinking vertical plane；2 double V-grooves；3 planing tool mechanisms；4 circular steel wire brush；5 Laser Overlaying welders, 51 laser
Device, 52 wire feeders, 53 protective gas blowning installations；6 polishing mechanisms, 61 polishing wheels；7 mounting plates.
【Specific embodiment】
Embodiment：
Fig. 1-Fig. 3 is please referred to, the present embodiment is the method for laser welding of hard aluminium alloy thin plate comprising following steps：
1) workpiece A and workpiece B to be welded are taken, wherein the thickness of workpiece A is greater than 3mm, workpiece B with a thickness of 0.5~
2mm；The depth sinking vertical plane 1 equal with workpiece B thickness is processed on workpiece A；
2) workpiece B is placed on sinking vertical plane 1 and carries out butt junction location with fixture with workpiece B；
3) it processes to form a double V-groove 2 in face of weld using planing tool mechanism 3；The angle of double V-groove 2 is 30~60 °, V
The depth of type groove 2 is the 10%~30% of workpiece B thickness；
4) region that weld seam both sides are surrounded using the upper surface of the polishing workpiece A and workpiece B of circular steel wire brush 4, is on the one hand used
In the aluminium skimmings for removing previous step generation；On the other hand the oxide layer of workpiece A and workpiece B surface are cleared up；
5) workpiece A and workpiece B are welded using Laser Overlaying welder 5, wherein laser power is 2~6kw, is sent
The gage of wire of silk is 0.8~1.2mm, and the bigger laser power of welding process demand increases cost, if gage of wire mistake
Small, welding process influences welding effect it is difficult to ensure that stable wire feed；Wire feed rate is controlled in 2~10m/min, when wire feed is too fast
Afterwards, wire feed can be welded it is difficult to ensure that stablizing；The effect that filler wire welding inhibits weld crack and stomata is not achieved in wire feed slowly excessively, and also
It will affect welding efficiency；In laser beam welding, it is blown into inert gas alignment welding position and carries out molten bath protection, wherein inertia
Gas is 99.99%Ar, and gas flow is controlled in 10~25L/min；Face of weld after being welded is higher than workpiece A and workpiece B
0.1~0.2mm of surface reduces polished amount and polishing difficulty；Weld penetration after being welded is greater than the thickness of workpiece B；
6) weld seam being welded is flattened and is polished using polishing mechanism 6.
Workpiece A and workpiece B is the hard aluminium alloy material of two kinds of different trades mark in the present embodiment.
The planing tool mechanism 3 is arranged on same mounting plate 7 with the circular steel wire brush 4, and the mounting plate 7 setting is driven one
The movable end of dynamic device (not identified in figure), it is mobile by the driving device drives edge bead direction.
The polishing mechanism 6 includes motor (not identifying in figure), is driven the polishing wheel 61 rotated, institute by the motor
It states polishing mechanism 6 to be arranged on the Laser Overlaying welder 5, and with 5 synchronizing moving of Laser Overlaying welder.It is described to swash
Light wire feed welder 5 includes laser 51, wire feeder 52 and protective gas blowning installation 53.
Since two kinds of workpiece of welding are the hard aluminium alloy materials of the different trades mark, itself it is easy for generating welding and splits
Line, and again since workpiece B is very thin thin-slab structure, thickness only 0.5~2mm, and the thickness of workpiece A is greater than workpiece B, this
The thick thin welding structure of kind one, more increases the probability of crackle generation；In addition, the thickness of workpiece B is very thin, after welding
Weld strength is also a great problem.
Therefore, to solve the above-mentioned problems, the present embodiment processes a sinking vertical plane 1 on workpiece A first, and by work
Part B is placed on sinking vertical plane 1, increases the contact area of workpiece A Yu workpiece B, enhances workpiece B in the strong of welding position
Degree.Before welding, a double V-groove first is opened in position while welding, guarantees that the enough silk filling amounts of welding process fill double V-groove, simultaneously
Meet the requirement of welded seam reinforcement 0.1-0.2mm；Removing surface is carried out with wire brush again, is using laser filling wire welding work
Skill, to be effectively controlled the generation of bead crack.
The present embodiment is the method for laser welding of hard aluminium alloy thin plate comprising is filled using a kind of wire filling laser welding connector
Set alignment laser position to be welded, the planing tool mechanism that goes out photocoagulation pre-treatment, along planing tool automatically grinding mechanism, close on Laser Welding
The welding wire feeder of connector while the protective gas for being blown into annular encirclement welding wire along welding wire conveying direction, weldering followed by
Weld seam automatic polishing mechanism after the completion of connecing.This programme provides good welding surroundings, ensures welding quality, while eliminating welding
The scale removal process of front and back realizes the flawless sunken welding of the big almag of crackle tendency.
Above-described is only some embodiments of the present invention.For those of ordinary skill in the art, not
Under the premise of being detached from the invention design, various modifications and improvements can be made, these belong to protection model of the invention
It encloses.
Claims (9)
1. a kind of method for laser welding of hard aluminium alloy thin plate, it is characterised in that：It includes the following steps：
1) workpiece A and workpiece B to be welded are taken, the depth sinking equal with the workpiece B thickness is processed on the workpiece A
Vertical plane；
2) the workpiece B is placed on the sinking vertical plane and carries out butt junction location with fixture with the workpiece B；
3) it processes to form a double V-groove in face of weld using planing tool mechanism；
4) region on weld seam both sides is surrounded using the polish upper surface of the workpiece A and the workpiece B of circular steel wire brush；
5) the workpiece A and the workpiece B are welded using Laser Overlaying welder, wherein laser power be 2~
6kw, the gage of wire of wire feed are 0.8~1.2mm, and it is high that wire feed rate controls the face of weld in 2~10m/min, after being welded
In 0.1~0.2mm of workpiece A and workpiece B surface；
6) weld seam being welded is flattened and is polished using polishing mechanism.
2. the method for laser welding of hard aluminium alloy thin plate as described in claim 1, it is characterised in that：The thickness of the workpiece A
Degree be greater than 3mm, the workpiece B with a thickness of 0.5~2mm.
3. the method for laser welding of hard aluminium alloy thin plate as described in claim 1, it is characterised in that：The workpiece A and institute
State the hard aluminium alloy material that workpiece B is two kinds of different trades mark.
4. the method for laser welding of hard aluminium alloy thin plate as described in claim 1, it is characterised in that：After step 5) is welded
Weld penetration be greater than the workpiece B thickness.
5. the method for laser welding of hard aluminium alloy thin plate as described in claim 1, it is characterised in that：The planing tool mechanism with
The circular steel wire brush is arranged on same mounting plate, which is arranged in the movable end of a driving device and is filled by the driving
It is mobile to set drives edge bead direction.
6. the method for laser welding of hard aluminium alloy thin plate as described in claim 1, it is characterised in that：The polishing mechanism is set
It sets on the Laser Overlaying welder, the polishing mechanism includes motor, driven the polishing rotated by the motor
Wheel, and with the Laser Overlaying welder synchronizing moving.
7. the method for laser welding of hard aluminium alloy thin plate as described in claim 1, it is characterised in that：The Laser Overlaying weldering
Connection device includes laser, wire feeder and protective gas blowning installation.
8. the method for laser welding of hard aluminium alloy thin plate as described in claim 1, it is characterised in that：The double V-groove
Angle is 30~60 °, and the depth of the double V-groove is the 10%~30% of the workpiece B thickness.
9. the method for laser welding of hard aluminium alloy thin plate as claimed in claim 7, it is characterised in that：It is welded in step 5)
When, inert gas is blown by the protective gas blowning installation, molten bath is protected, wherein inert gas is 99.99%
Ar, gas flow are controlled in 10~25L/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810827223.3A CN108838539A (en) | 2018-07-25 | 2018-07-25 | A kind of method for laser welding of hard aluminium alloy thin plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810827223.3A CN108838539A (en) | 2018-07-25 | 2018-07-25 | A kind of method for laser welding of hard aluminium alloy thin plate |
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| Publication Number | Publication Date |
|---|---|
| CN108838539A true CN108838539A (en) | 2018-11-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810827223.3A Pending CN108838539A (en) | 2018-07-25 | 2018-07-25 | A kind of method for laser welding of hard aluminium alloy thin plate |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109708783A (en) * | 2019-02-22 | 2019-05-03 | 无锡昆仑富士仪表有限公司 | A kind of corrosion resistant metal diaphragm component and its method for laser welding |
| CN113909678A (en) * | 2021-11-18 | 2022-01-11 | 哈焊国创(青岛)焊接工程创新中心有限公司 | Welding system for aluminum alloy laser welding and surface treatment method |
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| CN103801835A (en) * | 2014-01-17 | 2014-05-21 | 中国人民解放军装甲兵工程学院 | Method for remanufacturing cracked and damaged aluminum alloy thin-walled workpiece through laser |
| CN104289806A (en) * | 2014-09-28 | 2015-01-21 | 中国电子科技集团公司第三十八研究所 | Thin-wall aluminum alloy electronic beam welding method |
| JP2016019983A (en) * | 2014-07-14 | 2016-02-04 | 新日鐵住金株式会社 | Aluminum alloy weld joint excellent in fatigue characteristic and weld method |
| CN105397297A (en) * | 2015-12-07 | 2016-03-16 | 中色科技股份有限公司 | Laser welding method for aluminum alloy tailor-welded blanks with unequal thicknesses |
| CN106363282A (en) * | 2016-11-22 | 2017-02-01 | 苏州哈工众志自动化科技有限公司 | Method for overlapping welding of inconstant-thickness aluminum alloy |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103801835A (en) * | 2014-01-17 | 2014-05-21 | 中国人民解放军装甲兵工程学院 | Method for remanufacturing cracked and damaged aluminum alloy thin-walled workpiece through laser |
| JP2016019983A (en) * | 2014-07-14 | 2016-02-04 | 新日鐵住金株式会社 | Aluminum alloy weld joint excellent in fatigue characteristic and weld method |
| CN104289806A (en) * | 2014-09-28 | 2015-01-21 | 中国电子科技集团公司第三十八研究所 | Thin-wall aluminum alloy electronic beam welding method |
| CN105397297A (en) * | 2015-12-07 | 2016-03-16 | 中色科技股份有限公司 | Laser welding method for aluminum alloy tailor-welded blanks with unequal thicknesses |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109708783A (en) * | 2019-02-22 | 2019-05-03 | 无锡昆仑富士仪表有限公司 | A kind of corrosion resistant metal diaphragm component and its method for laser welding |
| CN109708783B (en) * | 2019-02-22 | 2023-09-01 | 无锡昆仑富士仪表有限公司 | Laser welding method of corrosion-resistant metal film sheet assembly |
| CN113909678A (en) * | 2021-11-18 | 2022-01-11 | 哈焊国创(青岛)焊接工程创新中心有限公司 | Welding system for aluminum alloy laser welding and surface treatment method |
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Application publication date: 20181120 |
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