CN106670649A - Wire filling laser welding method - Google Patents
Wire filling laser welding method Download PDFInfo
- Publication number
- CN106670649A CN106670649A CN201611190402.8A CN201611190402A CN106670649A CN 106670649 A CN106670649 A CN 106670649A CN 201611190402 A CN201611190402 A CN 201611190402A CN 106670649 A CN106670649 A CN 106670649A
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- CN
- China
- Prior art keywords
- welding
- laser
- wire
- filler wire
- plumb joint
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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
Abstract
The invention provides a wire filling laser welding method. Welding devices adopted by the method include a laser unit, a wire feeder and a welding head, wherein the laser unit is connected with the welding head through an optical fiber; the wire feeder is connected with the welding head through a connecting flange; laser beams emitted by the laser unit are transmitted to the welding head through the optical fiber so as to perform welding; the power of the laser unit is 5-10 KW, the welding speed is 7-15 m/min, and the included angle between the laser beams and the perpendicular direction is 0-15 degrees; and the wire feeding angle of the wire feeder is 45-60 degrees, the wire extension is 15-20 mm, the defocusing amount ranges from -2 mm to 2 mm, the interval of filaments is a negative value, and the welding head can bear lasers with the power of 20 KW at most. By means of the wire filling laser welding method, welding of sheet aluminum alloy can be effectively achieved, formation of weld joints is improved, the assembly requirement is reduced, a stable welding process is obtained, and the method is beneficial for aluminum alloy wire filling laser welding of mass industrial production.
Description
Technical field
The present invention relates to laser welding technology field, more particularly to a kind of laser welding with filler wire method.
Background technology
Aluminium alloy possesses that specific strength is high, and anticorrosive, low temperature resistant, thermal conductivity is good and is easy to the advantages such as plastic working,
It is widely used in various welding structures and product.The new technology that laser welding grows up as the nearly more than ten years, welds with tradition
Connection technology is compared, with energy density is high, the advantage such as speed of welding is fast and easy to automate.But aluminium alloy is to laser beam
Reflectivity is higher, and absorption of the workpiece to laser energy is relatively low, and easily crack, the defect such as stomata, welding joint softened.
Laser filling wire welding can solve laser welding and require limitation higher to fit-up gap, and improve workpiece to laser
The absorptivity of energy, meanwhile, by filler wire, weld metal composition can be adjusted, improve Weld Performance, it is Welded
There is provided a kind of new solution route.
In early days, China is limited by high power laser, and Laser Welding of Aluminum Alloys technical study is started late, for aluminium alloy
The research of laser welding is less, especially for the Laser Welding of Aluminum Alloys of thin plate, lower-wattage laser is used mostly, big
Power laser filler wire welding aspect, researches.And for big industrial production, high-quality, efficient welding are the eternal themes pursued,
In the past, because it is contemplated that laser cost, is welded using low power laser mostly, improved efficiency is limited.In recent years, with
The decline of laser cost, the pursuit to superpower laser welding procedure is also more and more urgent.
The content of the invention
In view of this, in order to overcome the defect and problem of prior art, the present invention to provide a kind of laser welding with filler wire method.
A kind of laser welding with filler wire method, the welding equipment of use includes laser, wire-feed motor and plumb joint, the laser
Device and the plumb joint are connected by optical fiber, and the wire-feed motor is connected using adpting flange and the plumb joint, the laser
The laser beam for sending is welded by the fiber optic conduction to the plumb joint, the power of the laser is 5~10KW,
Speed of welding be 7~15m/min, laser beam and vertical direction angle be 0~15 °, the wire feed angle of the wire-feed motor be 45
~60 °, stem elongation be that 15~20mm, defocusing amount are -2~2mm, chevilled silk spacing for negative, plumb joint maximum can bear 20KW power
Laser.
In a better embodiment of the invention, mother metal selects 1mm 6061 aluminium alloys of thickness, using butt welding mode, laser
Device power be 6kw, speed of welding for the angle of 10m/min, laser beam and vertical direction be 5 °, wire feed angle be 50 °, stem elongation
For 15mm, defocusing amount are 0.
In an of the invention better embodiment, preweld cleaning is carried out to exemplar before welding, after having cleared up, using rigidly fixing
In jig, retain the welded gaps of 0.1mm.
In a better embodiment of the invention, the preweld cleaning includes falling using sand papering the surface oxidation of exemplar
Layer, and the position to be welded of exemplar is cleaned using acetone.
In a better embodiment of the invention, protective gas during welding is argon gas or helium, and takes back-protective, gas
Flow is 25L/min.
In a better embodiment of the invention, control weld gap is between 0~0.3mm during welding.
Compared to prior art, laser welding with filler wire method proposed by the present invention can effectively solve the welding of thin plate aluminum alloy
Problem, improves appearance of weld, reduces matching requirements, obtains the welding process of stabilization, beneficial to big industrial aluminium alloy laser
Filler wire welding.
Brief description of the drawings
Fig. 1 is laser filling wire welding schematic diagram.
The signal of the aluminium alloy docking mode that Fig. 2 is welded for the laser welding with filler wire method provided using the present invention
Figure；
Fig. 3 is the weld seam front forming effect figure after being welded using the laser welding with filler wire method for providing of the invention；
Fig. 4 is the back of weld forming effect figure after being welded using the laser welding with filler wire method for providing of the invention.
Specific embodiment
For the ease of understanding the present invention, the present invention is described more fully below with reference to relevant drawings.In accompanying drawing
Give better embodiment of the invention.The preferred embodiments of the present invention are these are only, not thereby limits of the invention special
Sharp scope, equivalent structure or equivalent flow conversion that every utilization description of the invention and accompanying drawing content are made, directly or
Connect and be used in other related technical fields, be included within the scope of the present invention.
Unless otherwise defined, all of technologies and scientific terms used here by the article with belong to technical field of the invention
The implication that technical staff is generally understood that is identical.The term for being used in the description of the invention herein is intended merely to description tool
The purpose of the implementation method of body, it is not intended that in the limitation present invention.Term as used herein " and/or " include one or more
The arbitrary and all of combination of related Listed Items.
The present invention provides a kind of laser welding with filler wire method, and the welding equipment of use includes laser, wire-feed motor and welding
Head, the laser and the plumb joint are connected by optical fiber, and the wire-feed motor is connected using adpting flange and the plumb joint,
The laser beam that the laser sends is welded by the fiber optic conduction to the plumb joint, the power of the laser
For angle that 5~10KW, speed of welding are 7~15m/min, laser beam and vertical direction be 0~15 °, the wire-feed motor gives
Silk angle is 45~60 °, stem elongation is 15~20mm, defocusing amount is -2~2mm, chevilled silk spacing is negative, described plumb joint maximum
The laser of 20KW power can be born, as shown in Figure 1.
In the present embodiment, laser welding with filler wire method device therefor is laser filling wire welding equipment, including laser, wire feed
Machine, plumb joint and travel mechanism.Wherein, laser is 12KW high power lasers, and, with self heating function, plumb joint is most for wire-feed motor
The laser of 20KW power can be born greatly, and travel mechanism is used to move weldment or plumb joint movement.
The present invention provide laser welding with filler wire method utilize high power laser, by adjust laser beam angle, from
The important parameters such as Jiao Liang, chevilled silk spacing, wire feed angle, realize high-quality and efficient welding process.Specifically, for thickness of aluminum alloy
It is the thin plate aluminum alloy of 1mm, maximum welding speed is up to 15m/min, thus, it is possible to production efficiency is greatly improved, and with steady
The defects such as fixed welding process, postwelding beautiful appearance, pore-free, undercut, weld strength is apparently higher than common welding method.
It is understood that wire feed angle is the angle between welding wire and mother metal, stem elongation is that welding wire stretches out protection valve
Length, defocusing amount be laser spot from the distance between active position, the present invention is laser spot to the distance between welding wire, light
Silk spacing is welding wire and falls the distance between silk point and laser beam.
In the present embodiment, chevilled silk spacing is negative, it is ensured that welding wire 40%-90% falls in beam area, and laser
Device power be 5K~10KW, speed of welding be 7~15m/min, then can by the power of precise control laser and speed of welding,
Realize the high-speed welding of thin plate aluminum alloy.And then, by high-speed welding, crystal grain is long after aluminum alloy welding can be prevented to be sewn on welding
Greatly, optimization welding line structure is played, welding joint softened is prevented and treated, strengthens the effect of weld properties.
Further, the laser welding with filler wire method that the present invention is provided is larger to the tolerance of fit-up gap, by simple
To spelling, control weld gap is between 0~0.3mm, you can realize excellent one side welding with back formation weld seam for assembling.
It is understood that carrying out welding preceding, it is necessary to the mother metal of welding position using the laser welding with filler wire method
Surface carries out preweld cleaning, to ensure the pollutants such as oil-free, water；After having cleared up, using jig is rigidly secured to, retain
The welded gaps of 0.1mm.Specifically, preweld cleaning includes falling the surface oxide layer of exemplar using sand papering, and uses acetone
Clean the position to be welded of exemplar.
In welding process, due to using powerful laser, therefore laser energy higher can be obtained, except one
Divide and be used for melting outside aluminium alloy welding wire, unnecessary energy then can be used to melt mother metal, with welding wire filling rate higher
Meanwhile, Welded fusion penetration can be increased again, the preferable one side welding with back formation weld seam of quality is formed, meet high-speed welding production
Demand.
In the present embodiment, protective gas used is argon gas or helium during welding, by the protective gas pair coaxial with welding wire
Protected at Welded position.
Hereinafter, the present invention is illustrated by specific embodiment.
Fig. 2 is referred to, welding base metal is 200 × 100mm from 1mm 6061 aluminium alloys of thickness, exemplar size, and welding wire is selected
ER4043 welding wires, using butt welding mode.
First, preweld cleaning is carried out to exemplar (i.e. welding base metal), surface oxide layer is fallen with sand papering, it is clear using acetone
Wash position to be welded, it is ensured that position to be welded does not have the pollutants such as water, oil.After exemplar cleaning, using jig is rigidly secured to, protect
Stay the welded gaps of 0.1mm.
Then, welding parameters are configured, from laser power be 6kw, speed of welding be 10m/min, laser beam
It is 5 ° with the angle of vertical direction, the angle (i.e. wire feed angle) between welding wire and mother metal is 50 °, stem elongation is set as 15mm,
Defocusing amount is 0, while chevilled silk spacing is negative, it is ensured that welding wire 50% falls in beam area.
In the present embodiment, protective gas is argon gas, while taking back-protective, throughput is 25L/min.
By after welding, gained appearance of weld as shown in Figure 3 and Figure 4, the as can be seen from the figure front and the back side of weld seam
Shaping is good, the defect such as is collapsed without undercut, stomata, crackle and weldering.
Additionally, actual mechanical process shows, welding process stabilization is splashed smaller.
Compared to prior art, laser welding with filler wire method proposed by the present invention can effectively solve the welding of thin plate aluminum alloy
Problem, improves appearance of weld, reduces matching requirements, obtains the welding process of stabilization, beneficial to big industrial aluminium alloy laser
Filler wire welding.
Embodiment described above only expresses several embodiments of the invention, and its description is more specific and detailed, but simultaneously
Therefore the limitation to the scope of the claims of the present invention can not be interpreted as.It should be pointed out that for one of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to guarantor of the invention
Shield scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (6)
1. a kind of laser welding with filler wire method, the welding equipment of use includes laser, wire-feed motor and plumb joint, the laser
Connected by optical fiber with the plumb joint, the wire-feed motor is connected using adpting flange and the plumb joint, the laser hair
The laser beam for going out is welded by the fiber optic conduction to the plumb joint, it is characterised in that the power of the laser
For angle that 5~10KW, speed of welding are 7~15m/min, laser beam and vertical direction be 0~15 °, the wire-feed motor gives
Silk angle is 45~60 °, stem elongation is 15~20mm, defocusing amount is -2~2mm, chevilled silk spacing is for negative, plumb joint maximum can hold
By the laser of 20KW power.
2. laser welding with filler wire method as claimed in claim 1, it is characterised in that mother metal is adopted from 1mm 6061 aluminium alloys of thickness
Use butt welding mode, laser power be 6kw, speed of welding for the angle of 10m/min, laser beam and vertical direction be 5 °,
Wire feed angle is 50 °, stem elongation is 15mm, defocusing amount is 0.
3. laser welding with filler wire method as claimed in claim 1, it is characterised in that preweld cleaning is carried out to exemplar before welding,
After having cleared up, using jig is rigidly secured to, retain the welded gaps of 0.1mm.
4. laser welding with filler wire method as claimed in claim 3, it is characterised in that the preweld cleaning includes being beaten using sand paper
The surface oxide layer of exemplar is ground off, and the position to be welded of exemplar is cleaned using acetone.
5. laser welding with filler wire method as claimed in claim 1, it is characterised in that protective gas during welding is argon gas or helium
Gas, and back-protective is taken, throughput is 25L/min.
6. laser welding with filler wire method as claimed in claim 1, it is characterised in that controlled during welding weld gap 0~
Between 0.3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611190402.8A CN106670649A (en) | 2016-12-21 | 2016-12-21 | Wire filling laser welding method |
Applications Claiming Priority (1)
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|---|---|---|---|
| CN201611190402.8A CN106670649A (en) | 2016-12-21 | 2016-12-21 | Wire filling laser welding method |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108015421A (en) * | 2017-12-04 | 2018-05-11 | 上海思客琦自动化工程有限公司 | A kind of welding procedure of electrical switchgear aluminium alloy box |
| CN108213706A (en) * | 2017-12-30 | 2018-06-29 | 沈阳富创精密设备有限公司 | Aluminium alloy etches vacuum reaction chamber magnet body part laser filling wire welding technique |
| CN109500506A (en) * | 2018-12-26 | 2019-03-22 | 江苏立讯机器人有限公司 | A kind of feeding device |
| CN110052710A (en) * | 2019-03-27 | 2019-07-26 | 江苏集萃先进金属材料研究所有限公司 | A kind of aluminium alloy laser welding method |
| CN110385493A (en) * | 2019-09-02 | 2019-10-29 | 湖南大学 | A kind of laser scanning filler welder and method |
| CN113182684A (en) * | 2021-03-25 | 2021-07-30 | 中车青岛四方机车车辆股份有限公司 | Double-beam laser filler wire welding method and device |
| CN113634893A (en) * | 2021-08-13 | 2021-11-12 | 远景动力技术(江苏)有限公司 | Method for welding copper sampling terminal and aluminum tab and battery |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108015421A (en) * | 2017-12-04 | 2018-05-11 | 上海思客琦自动化工程有限公司 | A kind of welding procedure of electrical switchgear aluminium alloy box |
| CN108213706A (en) * | 2017-12-30 | 2018-06-29 | 沈阳富创精密设备有限公司 | Aluminium alloy etches vacuum reaction chamber magnet body part laser filling wire welding technique |
| CN109500506A (en) * | 2018-12-26 | 2019-03-22 | 江苏立讯机器人有限公司 | A kind of feeding device |
| CN110052710A (en) * | 2019-03-27 | 2019-07-26 | 江苏集萃先进金属材料研究所有限公司 | A kind of aluminium alloy laser welding method |
| CN110385493A (en) * | 2019-09-02 | 2019-10-29 | 湖南大学 | A kind of laser scanning filler welder and method |
| CN113182684A (en) * | 2021-03-25 | 2021-07-30 | 中车青岛四方机车车辆股份有限公司 | Double-beam laser filler wire welding method and device |
| CN113634893A (en) * | 2021-08-13 | 2021-11-12 | 远景动力技术(江苏)有限公司 | Method for welding copper sampling terminal and aluminum tab and battery |
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Application publication date: 20170517 |