CN107363399A - A kind of method of electric arc auxiliary laser weldering - Google Patents
A kind of method of electric arc auxiliary laser weldering Download PDFInfo
- Publication number
- CN107363399A CN107363399A CN201710700644.5A CN201710700644A CN107363399A CN 107363399 A CN107363399 A CN 107363399A CN 201710700644 A CN201710700644 A CN 201710700644A CN 107363399 A CN107363399 A CN 107363399A
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- laser
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- arc
- electric arc
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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
-
- 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
- B23K26/346—Working by laser beam, e.g. welding, cutting or boring in combination with welding or cutting covered by groups B23K5/00 - B23K25/00, e.g. in combination with resistance welding
- B23K26/348—Working by laser beam, e.g. welding, cutting or boring in combination with welding or cutting covered by groups B23K5/00 - B23K25/00, e.g. in combination with resistance welding in combination with arc heating, e.g. TIG [tungsten inert gas], MIG [metal inert gas] or plasma 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
Abstract
A kind of method of electric arc auxiliary laser weldering, the double focus laser that the present invention uses is divided into double focus laser beam through optical spectroscopic system, interlaced move can be done along the double beams laser focus of bead direction vertical distribution by single beam laser, substantially effectively stir molten bath, when its high power serves as welding heat source, be advantageous to increase fusion penetration, stir molten bath, effectively reduce stomata and splashing, meanwhile by finely tuning bifocal focal length, regulation and control weld penetration and molten wide can be achieved.When its low-power serves as heat treatment thermal source, be advantageous to improve the smoothness of face of weld, the uniformity of weld seam, reduce stomata and splashing, weldquality is improved, laser energy is occupied an leading position in the inventive method, and pre-welding heat treatment is carried out to workpiece using low-power list focal argon laser and electric arc, interacted by the plasma between electric arc and double focus laser thermal source, improving the absorptivity of laser energy strengthens laser " aperture " effect to obtain bigger welding penetration or speed of welding.
Description
Technical field
Present invention relates particularly to Materials Processing Engineering technical field, and in particular to a kind of method of electric arc auxiliary laser weldering.
Background technology
Laser welding is a kind of high-energy-density, high speed of welding, in high precision and is beneficial to obtain the one of tight weld tissue
Kind novel welding method.Laser welding is one of importance of Materialbearbeitung mit Laserlicht technology application, is mainly widely used in navigating
Its aviation, auto industry, electronics industry etc..With the fast development of modern industry, conventional laser welding technology is because of its own
The defects of be unable to meet demand, such as：The high-termal conductivity of materials to be welded, the spy such as low ionization energy and the high reflectance to laser
Property cause photocoagulation process stability very poor, ultimately result in that appearance of weld is poor, fusion penetration fluctuation is larger, weld porosity rate it is higher with
And laser assembly precision requires the problems such as height, equipment costliness.At present, major research institution or industrial maker, it has been suggested that more
Focal argon laser-arc hybrid welding method, this method can effectively improve laser utilization, the stability of welding process, improve weldering
Quality and performance are stitched, reduces manufacturing cost.
The content of the invention
The defects of in order to overcome above-mentioned prior art to exist, there is provided a kind of method of electric arc auxiliary laser weldering, in optimization work
When being welded under skill parameter, laser energy utilizing rate is improved, composite welding is realized, passes through the multifocal compound motion of laser, energy
It is enough effectively to make the refinement of welded metal after solidification；Promote the floating upward quicklies such as gas and the impurity in molten bath, reduce stomata
And dreg defect；Reduce welding residual stress and welding deformation；Make composition evenly, so as to improve weld structure；Improve
The comprehensive mechanical property of weld seam.
The technical solution that the present invention uses is：A kind of method of electric arc auxiliary laser weldering, comprises the following steps：
（1）Welding preparation：Workpiece surface to be welded is polished or cleaned, the workpiece to be welded after polishing or cleaning is fixed on weldering
Connect in frock；
（2）Laser beam and arc welding gun position are set：By laser beam with arc welding gun by the into serial arrangement of an axis, laser beam
Including single focal argon laser and double focus laser, double focus laser, arc welding gun, single focus are disposed with along weld seam welding direction
Laser, described double focus laser are tilted towards the setting of arc welding gun position, and described single focal argon laser and bead direction are into vertical
Set, described single focal argon laser end has spacing relative to arc welding gun；
（3）Technological parameter is set：Setting spot diameter is 4mm, and single focal argon laser power is 800~1000W, double focus laser work(
Rate is 3000~4400W, and arc current is 80~120A, and the chevilled silk of single focal argon laser and welding wire is away from for 10~16mm, bifocus
The chevilled silk of laser and welding wire is away from being 10~16mm for -1~6mm, dry extension of electrode, and speed of welding is 4~15m/min, and wire feed is fast
It is straight argon to spend for 5.5~7.5m/min, laser radiation gas, and gas flow is 10~30L/min, and welding gun protective gas is using pure
Argon or argon and CO2 gaseous mixtures, gas flow is 20~30L/min；
（4）Welding operation：After welding condition is provided with, protective gas is first passed through, then by the electricity on workpiece to be welded
The arc starting the arc, after 1~2s of arc stability, the laser of workpiece electric arc both sides to be welded is simultaneously emitted by laser beam, adopt
With the weld seam mode that laser is before and after electric arc, electric arc is in, laser head and welding gun are controlled by robot so that swashing on workpiece
Optical-electronic arc system associated movement completes laser-arc hybrid welding in industry.
The described double focus laser being obliquely installed and vertical direction angle are 5 °~15 °, and defocusing amount is -4~+4mm.
Focal length is fine-tuning between described double focus laser, 0.1~1mm of changing value, mutually does oval crisscross motion.
Vertical direction between described double focus laser and workpiece is provided with the laser light barrier plate to move in a circle.
Described laser light barrier plate does uniform circular motion or non-uniform circular motion, the HZ of frequency 50HZ~500.
Vertical direction between described double focus laser and workpiece is provided with the deformation of different electric-field intensity bottom profileds
Liquid lens.
Described liquid lens do the curvature defomation on vertical workpiece direction, deformation in the deformation of varying strength electric field bottom profiled
0~2mm of amplitude, cause focus changing position up and down, its Oscillation Amplitude is 0~3mm.
The beneficial effects of the invention are as follows：The invention provides a kind of method of electric arc auxiliary laser weldering, there is provided 4 thermals source：It is single burnt
Dot laser, welding gun electric arc, bifocal heat point source, tandem is arranged in welding direction in order successively, can change laser power and weldering
The electric current and voltage of gun system realize the output of different heats, realize the bond pattern of demand on the spot, the bifocal that the present invention uses
Dot laser is divided into double focus laser beam, along the double beams laser of bead direction vertical distribution by single beam laser through optical spectroscopic system
Focus can do interlaced motion, substantially effectively stir molten bath, when its high power serves as welding heat source, be advantageous to increase and melt
It is deep, stir molten bath, effectively reduce stomata and splashing, meanwhile, by finely tuning bifocal focal length, can be achieved regulation and control weld penetration and
Molten wide.When its low-power serves as heat treatment thermal source, be advantageous to improve the smoothness of face of weld, the uniformity of weld seam, reduce
Stomata and splashing, improve weldquality, laser energy is occupied an leading position in the inventive method, using low-power list focal argon laser and
Electric arc carries out pre-welding heat treatment to workpiece, is interacted by the plasma between electric arc and double focus laser thermal source, improves and swashs
The absorptivity of light energy strengthens laser " aperture " effect to obtain bigger welding penetration or speed of welding.
Figure of description
Fig. 1 is that schematic diagram is welded in bifocus whirling vibration of the present invention；Wherein 1 is workpiece, and 2 be that double focus laser beam is horizontally staggered rotation
Turn movement locus；3 be double focus laser beam along welding direction elliptical motion composite trochoid；4 be double focus laser Shu Chuizhi
Workpiece moves back and forth track on direction；5 be double focus laser beam；6 be double focus laser beam crisscross motion section trajectory diagram.
Fig. 2 is double excitation whirling vibration index path of the present invention.
Fig. 3 is that electric arc auxiliary laser of the present invention welds pattern diagram.
Embodiment
With reference to embodiment, the present invention will be described in detail, and embodiment is only the preferred embodiment of the present invention,
It is not limitation of the invention.
First, before welding, workpiece surface to be welded is polished or cleaned, the workpiece to be welded after polishing or cleaning is fixed on
On welding tooling；
2nd, remain that laser beam and arc welding gun are into serially arranged in an axis in welding process, collective effect is in quilt
Welding zone domain, set geometric parameter as follows:Laser beam and vertical direction angle are 5 °~15 °, and defocusing amount is -4~+4mm；
The 3rd, bond pattern and technological parameter are set：
By laser beam, by an axis, into serial arrangement, laser beam include single focal argon laser and double focus laser with arc welding gun,
Double focus laser, arc welding gun, single focal argon laser are disposed with along weld seam welding direction, described double focus laser is tilted towards
Arc welding gun position is set, and described double focus laser end is close to arc welding gun position, described single focal argon laser and weld seam
Into being vertically arranged, described single focal argon laser end is set relative to arc welding gun certain distance in direction；
The generation of single bifocus double beams laser beam, optical spectroscopic system can be used to be divided to single incident laser device or double
Individual laser carries out laser light incident, and double focus laser Shu Ze is to carry out light splitting using optical spectroscopic system to produce double focus laser,
It is bifocal along welding direction staggeredly at the uniform velocity or speed change circular motion by the extinction light barrier with through hole rotation transport
Movable property is given birth to, and the rotary motion of light barrier can be then driven by motor gear.On bifocal vertical workpiece direction up and down reciprocatingly
Motion, by laser by the liquid lens under incident electric fields effect after light barrier, by changing Current Voltage, change liquid lens
The electric-field intensity of both sides clamping, and then change liquid lens surface shape face, to carry out zoom.Light barrier and the liquid under electric field action
Lens are dripped to be distributed into axis.The bond pattern being related in device, can be by adjusting the relative position of laser heat source and electric arc thermal source
Realize.
Technological parameter is set：Setting spot diameter is 4mm, and single focal argon laser power is 800~1000W, double focus laser
Power is 3000~4400W, and arc current is 80~120A, and the chevilled silk of single focal argon laser and welding wire is away from for 10~16mm, bifocal
For the chevilled silk of dot laser and welding wire away from for -1~6mm, dry extension of electrode is 10~16mm, and speed of welding is 4~15m/min, wire feed
Speed is 5.5~7.5m/min, and laser radiation gas is straight argon, and gas flow is 10~30L/min, and welding gun protective gas uses
Straight argon or argon and CO2 gaseous mixtures, gas flow is 20~30L/min；
4th, welding operation：After welding condition is provided with, protective gas is first passed through, then by the electricity on workpiece to be welded
The arc starting the arc, after 1~2s of arc stability, the laser of workpiece electric arc both sides to be welded is simultaneously emitted by laser beam, adopt
With the weld seam mode that laser is before and after electric arc, electric arc is in, laser head and welding gun are controlled by robot so that swashing on workpiece
Optical-electronic arc system associated movement completes laser-arc hybrid welding in industry.
The double focus laser that the present invention uses is divided into double focus laser beam, along weldering by single beam laser through optical spectroscopic system
The double beams laser focus of seam direction vertical distribution can do interlaced motion, substantially effectively stir molten bath, filled in its high power
When welding heat source, be advantageous to increase fusion penetration, stir molten bath, effectively reduce stomata and splashing, meanwhile, it is bifocal by finely tuning
Focal length, regulation and control weld penetration and molten wide can be achieved.When its low-power serves as heat treatment thermal source, be advantageous to improve face of weld
Smoothness, the uniformity of weld seam, stomata and splashing are reduced, improve weldquality, laser energy is predominantly in the inventive method
Position, pre-welding heat treatment is carried out to workpiece using low-power list focal argon laser and electric arc, by electric arc and double focus laser thermal source it
Between plasma interaction, improve laser energy absorptivity enhancing laser " aperture " effect melted with obtaining bigger welding
Depth or speed of welding.
Described above is only the preferred embodiment of the present invention, and protection scope of the present invention is not limited merely to above-mentioned implementation
Example, all technical schemes belonged under thinking of the present invention belong to protection scope of the present invention.It should be pointed out that for the art
Those of ordinary skill for, some improvements and modifications without departing from the principles of the present invention, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (7)
- A kind of 1. method of electric arc auxiliary laser weldering, it is characterised in that comprise the following steps：（1）Welding preparation：Workpiece surface to be welded is polished or cleaned, the workpiece to be welded after polishing or cleaning is fixed on weldering Connect in frock；（2）Laser beam and arc welding gun position are set：By laser beam with arc welding gun by the into serial arrangement of an axis, laser beam Including single focal argon laser and double focus laser, double focus laser, arc welding gun, single focus are disposed with along weld seam welding direction Laser, described double focus laser are tilted towards the setting of arc welding gun position, and described single focal argon laser and bead direction are into vertical Set, described single focal argon laser end has spacing relative to arc welding gun；（3）Technological parameter is set：Setting spot diameter is 4mm, and single focal argon laser power is 800~1000W, double focus laser work( Rate is 3000~4400W, and arc current is 80~120A, and the chevilled silk of single focal argon laser and welding wire is away from for 10~16mm, bifocus The chevilled silk of laser and welding wire is away from being 10~16mm for -1~6mm, dry extension of electrode, and speed of welding is 4~15m/min, and wire feed is fast It is straight argon to spend for 5.5~7.5m/min, laser radiation gas, and gas flow is 10~30L/min, and welding gun protective gas is using pure Argon or argon and CO2 gaseous mixtures, gas flow is 20~30L/min；（4）Welding operation：After welding condition is provided with, protective gas is first passed through, then by the electricity on workpiece to be welded The arc starting the arc, after 1~2s of arc stability, the laser of workpiece electric arc both sides to be welded is simultaneously emitted by laser beam, adopt With the weld seam mode that laser is before and after electric arc, electric arc is in, laser head and welding gun are controlled by robot so that swashing on workpiece Optical-electronic arc system associated movement completes laser-arc hybrid welding in industry.
- 2. the method for a kind of electric arc auxiliary laser weldering according to claim 1, it is characterised in that described to be obliquely installed Double focus laser and vertical direction angle are 5 °~15 °, and defocusing amount is -4~+4mm.
- A kind of 3. method of electric arc auxiliary laser weldering according to claim 1, it is characterised in that described double focus laser Between focal length it is fine-tuning, 0.1~1mm of changing value, mutually do oval crisscross motion.
- A kind of 4. method of electric arc auxiliary laser weldering according to claim 3, it is characterised in that described double focus laser Vertical direction between workpiece is provided with the laser light barrier plate to move in a circle.
- A kind of 5. method of electric arc auxiliary laser weldering according to claim 4, it is characterised in that described laser light barrier plate Do uniform circular motion or non-uniform circular motion, the HZ of frequency 50HZ~500.
- A kind of 6. method of electric arc auxiliary laser weldering according to claim 3, it is characterised in that described double focus laser Vertical direction between workpiece is provided with the liquid lens in the deformation of different electric-field intensity bottom profileds.
- 7. the method for a kind of electric arc auxiliary laser weldering according to claim 6, it is characterised in that described liquid lens exist The curvature defomation on vertical workpiece direction is done in the deformation of varying strength electric field bottom profiled, 0~2mm of amplitude of deformation, is caused above and below focus Changing position, its Oscillation Amplitude are 0~3mm.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108213712A (en) * | 2018-03-27 | 2018-06-29 | 北京工业大学 | A kind of aluminium alloy laser spot rotates welding with filler wire method |
| CN111185666A (en) * | 2020-04-13 | 2020-05-22 | 中国航空制造技术研究院 | Scanning laser-TIG electric arc composite deep melting welding method |
| CN111515537A (en) * | 2019-02-05 | 2020-08-11 | 伊利诺斯工具制品有限公司 | System and method for hybrid laser and arc welding additive manufacturing |
| CN111673274A (en) * | 2020-05-21 | 2020-09-18 | 哈尔滨工业大学 | Double-beam laser swing welding method for inhibiting welding cracks of high-strength titanium alloy |
| 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 |
| CN112496544A (en) * | 2020-09-30 | 2021-03-16 | 上海交通大学 | Efficient welding method and device for thin-wall welding titanium tube by arc-assisted laser |
| CN114406622A (en) * | 2022-02-24 | 2022-04-29 | 湖南湘投金天新材料有限公司 | Production method of high-strength alloy welded pipe |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108213712A (en) * | 2018-03-27 | 2018-06-29 | 北京工业大学 | A kind of aluminium alloy laser spot rotates welding with filler wire method |
| CN111515537A (en) * | 2019-02-05 | 2020-08-11 | 伊利诺斯工具制品有限公司 | System and method for hybrid laser and arc welding additive manufacturing |
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| 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 |
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| CN112496544A (en) * | 2020-09-30 | 2021-03-16 | 上海交通大学 | Efficient welding method and device for thin-wall welding titanium tube by arc-assisted laser |
| CN114406622A (en) * | 2022-02-24 | 2022-04-29 | 湖南湘投金天新材料有限公司 | Production method of high-strength alloy welded pipe |
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Application publication date: 20171121 Assignee: INSTITUTE OF LASER AND OPTOELECTRONICS INTELLIGENT MANUFACTURING, WENZHOU University Assignor: Wenzhou University Contract record no.: X2020330000103 Denomination of invention: A method of arc assisted laser welding Granted publication date: 20190531 License type: Common License Record date: 20201125 |
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