CN106862757A - A kind of double laser beam complex welding method - Google Patents
A kind of double laser beam complex welding method Download PDFInfo
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- CN106862757A CN106862757A CN201710164818.0A CN201710164818A CN106862757A CN 106862757 A CN106862757 A CN 106862757A CN 201710164818 A CN201710164818 A CN 201710164818A CN 106862757 A CN106862757 A CN 106862757A
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- 238000003466 welding Methods 0.000 title claims abstract description 102
- 238000000034 method Methods 0.000 title claims abstract description 33
- 230000008569 process Effects 0.000 claims abstract description 16
- 239000013307 optical fiber Substances 0.000 claims abstract description 12
- 230000005540 biological transmission Effects 0.000 claims abstract description 11
- 238000002844 melting Methods 0.000 claims abstract description 10
- 230000008018 melting Effects 0.000 claims abstract description 10
- 239000002245 particle Substances 0.000 claims abstract description 8
- 230000000694 effects Effects 0.000 claims abstract description 7
- 230000004927 fusion Effects 0.000 claims abstract description 5
- 239000002131 composite material Substances 0.000 claims description 6
- 230000033001 locomotion Effects 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 230000035515 penetration Effects 0.000 claims description 6
- 238000013019 agitation Methods 0.000 claims description 4
- 230000007246 mechanism Effects 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 description 6
- 230000007547 defect Effects 0.000 description 4
- 238000011161 development Methods 0.000 description 4
- 238000010891 electric arc Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 239000010953 base metal Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910000679 solder Inorganic materials 0.000 description 2
- 239000010963 304 stainless steel Substances 0.000 description 1
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 229910000589 SAE 304 stainless steel Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000003032 molecular docking Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000002604 ultrasonography Methods 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
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
- B23K26/06—Shaping the laser beam, e.g. by masks or multi-focusing
- B23K26/0604—Shaping the laser beam, e.g. by masks or multi-focusing by a combination of beams
-
- 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
- B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
- B23K26/06—Shaping the laser beam, e.g. by masks or multi-focusing
- B23K26/064—Shaping the laser beam, e.g. by masks or multi-focusing by means of optical elements, e.g. lenses, mirrors or prisms
-
- 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
- B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
- B23K26/06—Shaping the laser beam, e.g. by masks or multi-focusing
- B23K26/064—Shaping the laser beam, e.g. by masks or multi-focusing by means of optical elements, e.g. lenses, mirrors or prisms
- B23K26/0648—Shaping the laser beam, e.g. by masks or multi-focusing by means of optical elements, e.g. lenses, mirrors or prisms comprising lenses
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Laser Beam Processing (AREA)
Abstract
A kind of double laser beam complex welding method, two beam laser are exported using two lasers, by two independent Optical Fiber Transmissions, workpiece are welded simultaneously after over-focusing；Two beam laser beams are divided into welding light beam and scanning light beam by effect, and scanning light beam is transferred to face of weld by galvanometer, the particles centered on welding light beam in the application point of face of weld, and two beam laser form the welding of congruent melting pond in face of weld；Scanning light beam, according to the scanning pattern of setting, in the high-velocity scanning back and forth of weld seam both sides, is stirred, while the connection between weld seam both sides can be improved in scanning process in welding process to molten bath.Stirred by laser beam particles, molten bath can be strengthened flow causing that gas is easily escaped, eliminate stomata such that it is able to the problems such as eliminating incomplete fusion, the stomata of single LASER BEAM WELDING generation, drastically increase welding quality.
Description
Technical field
The present invention relates to a kind of laser processing, a kind of double laser beam complex welding method is specifically related to.
Background technology
Laser welding is a kind of advanced welding method, with single track welding penetration it is big, speed of welding is fast, welding deformation is small
The advantages of, therefore welding quality is higher than traditional welding method, obtains a wide range of applications in the industrial production.But, Laser Welding
Connect and there is also some defects, the hot spot very little such as after laser beam focusing, the molten bath formed in welding process is smaller, and this is just
It is required that the gap between welding base metal is sufficiently small, it is however generally that, the gap between welding base metal can not be straight more than focal beam spot
The 1/2 of footpath, this butt-welding fitting assembled condition（Gap, misalignment, non-equal thickness etc.）Requirement very high is proposed, increases production cost.And
And in welding process, focusing fluctuation, control of the light beam to medium influence factor are more difficult so that weld seam is easy to produce gas
Hole, crack defect etc., these shortcomings limit its further application.In order to make up the deficiency of pure laser welding, laser is multiple
Solder technology is closed increasingly to obtain paying attention to and development.
At present, laser compound welding technical research and application more predominantly laser-arc hybrid welding in industry technology, the party
Method using electric arc butt joint gap it is insensitive the characteristics of and electric arc melting bath stronger bridging capability change laser welding to work
The high request of part assembling.Scholar both domestic and external proposes the composite welding mode of various laser-electric arcs, including laser-TIG, swashs
Light-MIG, laser-plasma etc., portion of techniques obtains application aborning.But, because the introducing of electric arc has added welding
Heat input, so that welding heat affected zone and thermal deformation increase.
With the development of laser manufacturing technology, laser output power is increased considerably, and can be by certain energy
Ratio exports two beam laser simultaneously.And, the development of Laser Transmission mode also causes that laser welding mode is presented variation, such as big
The development of power laser optical fiber transmission technique, vibration mirror scanning transmission technology so that laser welding is easier to realize that flexibility is processed.
Beam Propagation is carried out by vibration mirror scanning, laser scanning solder technology is generated, laser beam can quickly, be accurate to up to specific bit
Put, and collimation or focusing unit need not be swung, light beam just can be quickly and accurately deflected by galvanometer, meanwhile, quickly sweep
Retouching can reduce heat input, reduce welding deformation.In order to fully demonstrate the spies such as laser welding heat affected area is small, welding deformation is small
Point, while disclosure satisfy that conventional play movement assembled condition again, two beam laser beams are carried out composite welding by the present invention, that is, use
Two beam laser form the welding of congruent melting pond in workpiece surface, reduce limitation of the play movement to laser welding, while by quickly sweeping
The laser agitation molten pool retouched, reduces joint stomata.
The content of the invention
The purpose of the present invention is directed to laser welding butt-welding fitting assembled condition（Gap, misalignment, non-equal thickness etc.）Height will
Ask, focusing fluctuation, the unmanageable problem of light beam centering, there is provided one kind can fully demonstrate laser welding heat affected area it is small,
The features such as welding deformation is small, and the double laser beam complex welding method of the play movement assembled condition of routine can be met.
The technical proposal of the invention is realized in this way：
Double laser beam complex welding method of the present invention, is characterized in comprising the following steps：
1）Two beam laser are exported by two lasers, according to the specification of workpiece to be welded, power, the space bit of two beam laser beams is set
Put, in welding process, by two independent Optical Fiber Transmissions；
2）Two beam laser beams are divided into welding light beam and scanning light beam by effect, and from after Optical Fiber Transmission, welding light beam is poly- by collimation
Burnt in workpiece surface to be welded, scanning light beam is being transferred to face of weld after assembling by collimation by galvanometer, and two beam laser are being welded
Seam surface forms the welding of congruent melting pond；
3）During composite welding, welding light beam is moved with scanning light beam with the motion of mechanical arm or walking mechanism, together
When scanning light beam according to setting scanning pattern, in weld seam both sides high speed particles, molten bath is stirred in scanning process
Mix, while improving the connection between weld seam both sides.
Wherein, in welding process, welding light beam is mainly used in melting mother metal, reaches the effect of deep penetration welding；Scanning light beam
It is mainly used in agitation molten pool, while also for fusing mother metal provides heat.
And, it is while act on workpiece to be welded, to form the welding of congruent melting pond after two beam Laser Focusings, and by scanning light beam
Particles are stirred, and enhancing molten bath is flowed and causes that gas is easily escaped, and eliminates stomata such that it is able to eliminated single LASER BEAM WELDING and produced
The problems such as raw incomplete fusion, stomata.
Also, two lasers for using are can to carry out disk, optical fiber or the Nd of Optical Fiber Transmission：YAG laser.Scanning
The sweep span of light beam is 0-2mm, and sweep speed is 0-1000mm/s.In welding process, light beam is welded with scanning light beam
Power ratio is 2：1, and welding light beam scans the plane included angle to be formed for 15 ° -60 ° with scanning light beam.
The present invention compared with prior art, has the following advantages that：
1st, the present invention carries out composite welding using two beam laser, is rationally realized using the energy of two beam laser high-quality compound
Welding, while welding penetration is ensured, can eliminate the defects such as incomplete fusion, stomata again；
2nd, the present invention reduces the sensitiveness in laser welding butt joint gap by scanning laser beam, increases laser welding
Adaptability；
3rd, the present invention have it is applied widely the characteristics of, can be welded for different materials, including carbon steel, stainless steel,
Aluminium alloy etc..
The present invention is further illustrated below in conjunction with the accompanying drawings.
Brief description of the drawings
Fig. 1 is double laser beam composite welding schematic diagram of the present invention.
Fig. 2 is scanning light beam track of the present invention schematic diagram.
Reference：1 is welding focus lamp, and 2 is welding light beam, and 3 is X-direction galvanometer, and 4 is Y-direction galvanometer, and 5 is scanning
Focus lamp, 6 is scanning light beam, and 7 is molten bath, and 8 is weld seam side, and 9 is laser scanning track, and 10 is weld seam opposite side, and 11 is weldering
Seam center, t is laser scanning spacing.
Specific embodiment
As shown in figure 1, using two disk, optical fiber or the Nd that can carry out Optical Fiber Transmission：Two beams of YAG laser output
Laser is welded.Wherein, two beam laser beams are divided into welding light beam and scanning light beam by effect.Welding light beam is by focussing force
In workpiece surface to be welded, at the same scanning light beam after collimation by after X-direction galvanometer, the deflection of Y-direction galvanometer in workpiece to be welded
Surface focus on, during welding centered on welding light beam in the application point of face of weld particles, two beam Laser Focusings are to be welded
The point distance of workpiece surface is 0-1mm.In welding process, welding light beam with welding direction move forward, scanning light beam with
Stirring action is formed to molten bath according to predetermined track scanning in weld seam both sides during welding direction movement.And, in weldering
In termination process, welding light beam is mainly used in melting mother metal, reaches the effect of deep penetration welding；Scanning light beam is mainly used in agitation molten pool,
Simultaneously also for fusing mother metal provides heat.Stirred by the particles of scanning light beam, molten bath can be strengthened and flowed so that gas
Easily effusion, eliminates stomata, so that the problems such as eliminating incomplete fusion, the stomata that single LASER BEAM WELDING is produced.And, scanning light beam
Sweep span is 0-2mm, and sweep speed is 0-1000mm/s.In welding process, the power ratio of welding light beam and scanning light beam
Be worth is 2：1, and welding light beam scans the plane included angle to be formed for 15 ° -60 ° with scanning light beam.
Below by embodiment, the present invention is further illustrated.
Embodiment 1：
Workpiece to be welded is 304 stainless steel plates of thick 8mm, by the way of flat board docking.
Workpiece to be welded is fixed on workbench, while the plumb joint being made up of scanning galvanometer, collimation focusing mirror etc. is fixed
In manipulator, the distance between adjustment scanning galvanometer and face of weld.
After workpiece to be welded and welding system are ready to complete, welded.It is 6000W to set welding beam laser power,
Defocusing amount -3mm, scanning light beam laser power is 3000W, scan rate of vibrating mirror 100mm/s, and scan mode is using the shape in Fig. 2
Formula, sweep span is 0.4mm.Speed of welding is 30mm/s.Protected using high-purity argon, flow 30L/min.
Test specimen, seam bottom through welding, both sides penetration, ultrasound detection zero defect are detected after the completion of welding.
The present invention is described by embodiment, but is not limited the invention, with reference to description of the invention, institute
Other changes of disclosed embodiment, such as the professional person for this area is readily apparent that, such change should belong to
Within the scope of the claims in the present invention are limited.
Claims (6)
1. a kind of double laser beam complex welding method, it is characterised in that comprise the following steps：
1）Two beam laser are exported by two lasers, according to the specification of workpiece to be welded, power, the space bit of two beam laser beams is set
Put, in welding process, by two independent Optical Fiber Transmissions；
2）Two beam laser beams are divided into welding light beam and scanning light beam by effect, and from after Optical Fiber Transmission, welding light beam is poly- by collimation
Burnt in workpiece surface to be welded, scanning light beam is being transferred to face of weld after assembling by collimation by galvanometer, and two beam laser are being welded
Seam surface forms the welding of congruent melting pond；
3）During composite welding, welding light beam is moved with scanning light beam with the motion of mechanical arm or walking mechanism, together
When scanning light beam according to setting scanning pattern, in weld seam both sides high speed particles, molten bath is stirred in scanning process
Mix, while improving the connection between weld seam both sides.
2. double laser beam complex welding method according to claim 1, it is characterised in that：In welding process, light is welded
Beam is mainly used in melting mother metal, reaches the effect of deep penetration welding；Scanning light beam is mainly used in agitation molten pool, while being also fusing mother metal
Heat is provided.
3. double laser beam complex welding method according to claim 1, it is characterised in that：In welding process, two beams swash
Light acts on workpiece to be welded simultaneously after focusing on, and forms the welding of congruent melting pond, and is stirred by scanning light beam particles, strengthens molten bath
Flowing causes that gas is easily escaped, and eliminates stomata such that it is able to eliminate asking for incomplete fusion, stomata that single LASER BEAM WELDING produces
Topic.
4. double laser beam complex welding method according to claim 1, it is characterised in that：Two lasers for using are energy
Enough carry out disk, optical fiber or the Nd of Optical Fiber Transmission：YAG laser.
5. double laser beam complex welding method according to claim 1, it is characterised in that：The sweep span of scanning light beam is
0-2mm, sweep speed is 0-1000mm/s.
6. double laser beam complex welding method according to claim 1, it is characterised in that：In welding process, light is welded
Beam is 2 with the power ratio of scanning light beam：1, and welding light beam scans the plane included angle to be formed for 15 ° -60 ° with scanning light beam.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710164818.0A CN106862757A (en) | 2017-03-20 | 2017-03-20 | A kind of double laser beam complex welding method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710164818.0A CN106862757A (en) | 2017-03-20 | 2017-03-20 | A kind of double laser beam complex welding method |
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| CN201710164818.0A Pending CN106862757A (en) | 2017-03-20 | 2017-03-20 | A kind of double laser beam complex welding method |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107162395A (en) * | 2017-07-14 | 2017-09-15 | 湖南理工学院 | A kind of method of the double-deck or vertical packaged glass of multilayer |
| CN108788453A (en) * | 2018-06-19 | 2018-11-13 | 深圳市万顺兴科技有限公司 | A kind of recombination laser plumb joint |
| CN109967877A (en) * | 2017-12-25 | 2019-07-05 | 大族激光科技产业集团股份有限公司 | A kind of method for laser welding and system |
| CN110170742A (en) * | 2019-06-25 | 2019-08-27 | 华中科技大学 | A kind of Aluminum Alloy Plate laser soldering device and method |
| CN110560895A (en) * | 2018-06-04 | 2019-12-13 | 丰田自动车株式会社 | laser welding method |
| CN111103684A (en) * | 2020-01-06 | 2020-05-05 | 深圳市大德激光技术有限公司 | Multi-head cooperative control method and system for laser beam splitting energy |
| CN111266730A (en) * | 2018-12-04 | 2020-06-12 | 富泰华工业（深圳）有限公司 | Welding device |
| CN111673274A (en) * | 2020-05-21 | 2020-09-18 | 哈尔滨工业大学 | A dual-beam laser swing welding method for suppressing welding cracks in high-strength titanium alloys |
| CN111805087A (en) * | 2020-05-20 | 2020-10-23 | 中车青岛四方机车车辆股份有限公司 | Double-beam laser welding method and welding device |
| CN111843211A (en) * | 2020-08-27 | 2020-10-30 | 中车青岛四方机车车辆股份有限公司 | Laser welding method and device |
| CN112247359A (en) * | 2020-10-23 | 2021-01-22 | 广东镭奔激光科技有限公司 | Novel double-beam laser composite laser powder filling welding method and device |
| CN112453703A (en) * | 2020-11-25 | 2021-03-09 | 南京航空航天大学 | Complex special-shaped structure remote laser welding method based on visual sensing |
| CN112775542A (en) * | 2020-07-27 | 2021-05-11 | 苏州富润泽激光科技有限公司 | Laser hybrid welding equipment for bipolar plate of hydrogen fuel cell |
| CN113333952A (en) * | 2021-08-05 | 2021-09-03 | 南通海蓝德机械有限公司 | Welding device for eliminating laser welding air holes |
| CN114833453A (en) * | 2022-06-09 | 2022-08-02 | 华中科技大学 | Welding method and welding device based on light beam and electromagnetic composite stirring |
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Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107162395A (en) * | 2017-07-14 | 2017-09-15 | 湖南理工学院 | A kind of method of the double-deck or vertical packaged glass of multilayer |
| CN109967877A (en) * | 2017-12-25 | 2019-07-05 | 大族激光科技产业集团股份有限公司 | A kind of method for laser welding and system |
| CN110560895A (en) * | 2018-06-04 | 2019-12-13 | 丰田自动车株式会社 | laser welding method |
| US11511371B2 (en) | 2018-06-04 | 2022-11-29 | Toyota Jtdosha Kabushiki Kaisha | Laser welding method |
| CN108788453A (en) * | 2018-06-19 | 2018-11-13 | 深圳市万顺兴科技有限公司 | A kind of recombination laser plumb joint |
| CN111266730A (en) * | 2018-12-04 | 2020-06-12 | 富泰华工业（深圳）有限公司 | Welding device |
| CN111266730B (en) * | 2018-12-04 | 2022-04-12 | 富泰华工业（深圳）有限公司 | Welding device |
| CN110170742A (en) * | 2019-06-25 | 2019-08-27 | 华中科技大学 | A kind of Aluminum Alloy Plate laser soldering device and method |
| CN111103684A (en) * | 2020-01-06 | 2020-05-05 | 深圳市大德激光技术有限公司 | Multi-head cooperative control method and system for laser beam splitting energy |
| CN111805087A (en) * | 2020-05-20 | 2020-10-23 | 中车青岛四方机车车辆股份有限公司 | Double-beam laser welding method and welding device |
| CN111673274B (en) * | 2020-05-21 | 2022-03-01 | 哈尔滨工业大学 | A dual-beam laser swing welding method for suppressing welding cracks in high-strength titanium alloys |
| CN111673274A (en) * | 2020-05-21 | 2020-09-18 | 哈尔滨工业大学 | A dual-beam laser swing welding method for suppressing welding cracks in high-strength titanium alloys |
| CN112775542A (en) * | 2020-07-27 | 2021-05-11 | 苏州富润泽激光科技有限公司 | Laser hybrid welding equipment for bipolar plate of hydrogen fuel cell |
| CN111843211A (en) * | 2020-08-27 | 2020-10-30 | 中车青岛四方机车车辆股份有限公司 | Laser welding method and device |
| CN112247359A (en) * | 2020-10-23 | 2021-01-22 | 广东镭奔激光科技有限公司 | Novel double-beam laser composite laser powder filling welding method and device |
| CN112247359B (en) * | 2020-10-23 | 2022-07-05 | 广东镭奔激光科技有限公司 | Novel double-beam laser composite laser powder filling welding method and device |
| CN112453703A (en) * | 2020-11-25 | 2021-03-09 | 南京航空航天大学 | Complex special-shaped structure remote laser welding method based on visual sensing |
| CN113333952A (en) * | 2021-08-05 | 2021-09-03 | 南通海蓝德机械有限公司 | Welding device for eliminating laser welding air holes |
| CN113333952B (en) * | 2021-08-05 | 2021-10-01 | 南通海蓝德机械有限公司 | Welding device for eliminating laser welding air holes |
| CN114833453A (en) * | 2022-06-09 | 2022-08-02 | 华中科技大学 | Welding method and welding device based on light beam and electromagnetic composite stirring |
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