CN101549440A - Laser-electrical arc composite heat source welding method and welding device - Google Patents
Laser-electrical arc composite heat source welding method and welding device Download PDFInfo
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- CN101549440A CN101549440A CN 200910107260 CN200910107260A CN101549440A CN 101549440 A CN101549440 A CN 101549440A CN 200910107260 CN200910107260 CN 200910107260 CN 200910107260 A CN200910107260 A CN 200910107260A CN 101549440 A CN101549440 A CN 101549440A
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Abstract
The invention provides a laser-electrical arc composite heat source welding method and welding device, pertaining to the field of laser welding. The method includes the following steps: electric arc acting on the work piece to be welded to form an electric arc melting bath; a medium and small power laser radiating on the electric arc melting bath to form a lock hole; the electric arc acting on the laser so that the laser absorption ratio increases and the lock hole is stabilized; the laser controlling the electric arc to contract, so that the weld penetration is augmented. The laser-electrical arc composite heat source welding method provided by the present invention adopts electric arc and medium and small power laser as a composite heat source, augments the weld penetration and width by the interaction of the laser and electric arc, so that the welding effect of a kilowatt-class high-power laser is achieved, the energy use ratio is improved and the processing cost is reduced.
Description
Technical field
The invention belongs to the laser weld field, relate in particular to a kind of The laser-arc hybrid welding method and welder.
Background technology
Along with the development of industrial technology, laser welding process comes into one's own more and more, and is applied in all trades and professions, and the demand that adopts high power laser to weld is more and more.Yet the electricity conversion of YAG laser instrument is about 3%, and the electricity conversion of CO2 laser instrument has only about 10%, therefore causes energy utilization rate low, the processing cost height.
Summary of the invention
The purpose of the embodiment of the invention is to provide a kind of The laser-arc hybrid welding method, is intended to solve the problem that energy utilization rate is low, processing cost is high in the existing high power laser welding.
The embodiment of the invention is achieved in that a kind of The laser-arc hybrid welding method, and described method comprises the steps:
Arcing forms electric arc melting bath in workpiece to be welded;
Medium and small power laser radiating is in described electric arc melting bath and form lockhole;
Described arcing is in described laser, and described laser absorption rate increases, and described lockhole is stable;
The described electric arc of described laser controlling shrinks, and weld penetration increases.
As one embodiment of the present of invention, described electric arc and described laser increase along with the increase of described thickness of workpiece to be welded in the horizontal range of described surface of the work to be welded.
Wherein, described electric arc and described laser are 0.5-5mm in the horizontal range of described surface of the work to be welded.
In embodiments of the present invention, the angle between described electric arc and the described laser is smaller or equal to 30 degree.
As one embodiment of the present of invention, the power of the laser of described middle low power is 50-1000W, and the electric current of described electric arc is 20-300A.
As one embodiment of the present of invention, described electric arc is tungsten argon arc, consumable electrode gas or plasma arc.
As one embodiment of the present of invention, the complex method of described laser and described electric arc is coaxial compound or paraxonic is compound.
Another purpose of the embodiment of the invention also is to provide a kind of welder, and described welder comprises: arc welding gun and middle low power laser instrument; Described arc welding gun produces electric arc when connecting power supply; Described arcing forms electric arc melting bath in workpiece to be welded; The laser of described middle low power laser instrument emission middle low power; Described laser emission is in described electric arc melting bath and form lockhole; Described arcing is in described laser, and described laser absorption rate increases, and described lockhole is stable; The described electric arc of described laser controlling shrinks, and weld penetration increases.
As one embodiment of the present of invention, described arc welding gun is tungsten argon arc welding gun, melt pole electrical arc welding gun or plasma (welding) torch.As one embodiment of the present of invention, described laser instrument is an optical fiber laser.
The laser-arc hybrid welding method provided by the invention adopts the laser of electric arc and middle low power as composite heat power supply, interaction by laser and electric arc makes weld penetration increase, width increases, reached the welding effect of multikilowatt superpower laser, improved energy utilization rate, reduced processing cost.
Description of drawings
Fig. 1 is the realization flow figure of a kind of The laser-arc hybrid welding method of providing of the embodiment of the invention;
Fig. 2 is the structural representation of the welder that welds of employing The laser-arc hybrid welding method that the embodiment of the invention provides.
The specific embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
The laser-arc hybrid welding method that the embodiment of the invention provides adopts the laser of electric arc and middle low power as composite heat power supply, and the interaction by laser and electric arc makes weld penetration increase, the width increase.
The realization flow of a kind of The laser-arc hybrid welding method that the embodiment of the invention provides for convenience of explanation, only shows the part relevant with the embodiment of the invention as shown in Figure 1, and details are as follows.
A kind of The laser-arc hybrid welding method comprises the steps:
In step S101, arcing forms electric arc melting bath in workpiece to be welded;
In step S102, medium and small power laser radiating is in electric arc melting bath and form lockhole; Wherein, the power of the laser of middle low power is 50-1000W, and the electric current of electric arc is 20-300A.
In step S103, arcing is in laser, and laser absorption rate increases, and lockhole is stable;
In step S104, laser controlling electric arc shrinks, and weld penetration increases.
As one embodiment of the present of invention, electric arc and laser increase along with the increase of described thickness of workpiece to be welded in the horizontal range of surface of the work to be welded.Wherein, electric arc and laser are 0.5-5mm in the horizontal range of surface of the work to be welded.
In embodiments of the present invention, adopt these two kinds of thermals source of laser of electric arc and middle low power to organically combine, give full play to the two unique advantage separately: the weld seam of electric arc is put up a bridge very capable, and laser emission has strengthened the stability of laser lockhole in the forward position of electric arc melting bath; Introduce the middle low power laser of high light beam quality simultaneously, induce electric arc sharply to shrink, energy density significantly increases, and weld penetration, width obviously increase, and can reach the effect of multikilowatt high power laser light welding, has reduced processing cost, has saved electric power resource.Simultaneously, electric arc is by laser " firmly " control, and the arc stability height can be realized the high-speed welding of thin plate.
The structure of the welder that the employing The laser-arc hybrid welding method that Fig. 2 shows the embodiment of the invention to be provided is welded for convenience of explanation, only shows the part relevant with the embodiment of the invention, and details are as follows.
This welder comprises: middle low power laser instrument 21 and arc welding gun 22; Arc welding gun 22 produces electric arc 220 when connecting power supply, electric arc 220 acts on workpiece 23 to be welded and forms electric arc melting bath; The laser 210 of middle low power laser instrument 21 emission middle low powers, laser 210 radiation are in electric arc melting bath and form lockhole; Electric arc 220 acts on laser 210, and laser 210 absorptivities increase, and lockhole is stable; Laser 210 control electric arcs 220 shrink, and weld penetration increases.
As one embodiment of the present of invention, middle low power laser instrument 21 is an optical fiber laser.Optical fiber laser can produce the laser 210 of beam quality very good (light beam factor M 2＜1.1); Power density is very high, easily forms stable lockhole, and depth of focus is bigger simultaneously, and is lower to the welding high susceptibility.Power is the laser 210 electricity conversion height of 50-1000W simultaneously, capacity usage ratio height, equipment easy care.
In embodiments of the present invention, electric arc 220 increases along with the increase of workpiece 23 thickness to be welded with the horizontal range D of laser 210 on workpiece to be welded 23 surfaces; Wherein, electric arc 220 is 0.5-5mm with the horizontal range D of laser 210 on workpiece to be welded 23 surfaces.
As one embodiment of the present of invention, the angle a between electric arc 220 and the laser 210 is smaller or equal to 30 degree.
In embodiments of the present invention, arc welding gun 22 can be argon tungsten-arc welding rifle, melt pole electrical arc welding gun or plasma (welding) torch.The electric current of the electric arc 220 that arc welding gun 22 produces is 20-300A.
In embodiments of the present invention, the complex method of laser 210 and electric arc 220 is coaxial compound or paraxonic is compound, in laser-electric arc paraxonic or coaxial combination process, electric arc 220 has very strong bridging capability, laser 210 acts on the zone of electric arc melting bath, form stable lockhole, increased the utilization rate of laser 210 simultaneously.
In embodiments of the present invention, introduce electric arc 220 as thermal source, avoided the shortcoming of laser small light spot bridging capability difference, simultaneously, laser 210 acts on the electric arc melting bath zone, has increased the adaptability to the gap, makes lockhole more stable simultaneously; Laser 210 sharply shrinks electric arc 220, and energy density increases, and can reach the welding effect of multikilowatt superpower laser, greatly reduces processing cost, has improved capacity usage ratio; In addition, laser 210 can be controlled electric arc 220 firmly, makes the stability of electric arc 220 be enhanced, and can realize High Speed Welding.
In embodiments of the present invention, can adjust the flow of the power of laser 210, the power of electric arc 220 (electric current and voltage are long-pending) and protective gas according to material, fusion penetration requirement, the fit-up gap of workpiece 23 to be welded.
The The laser-arc hybrid welding method that the embodiment of the invention provides adopts the laser of electric arc and middle low power as composite heat power supply, interaction by laser and electric arc makes weld penetration increase, width increases, reached the welding effect of multikilowatt superpower laser, improved energy utilization rate, reduced processing cost.
The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1, a kind of The laser-arc hybrid welding method is characterized in that, described method comprises the steps:
Arcing forms electric arc melting bath in workpiece to be welded;
Medium and small power laser radiating is in described electric arc melting bath and form lockhole;
Described arcing is in described laser, and described laser absorption rate increases, and described lockhole is stable;
The described electric arc of described laser controlling shrinks, and weld penetration increases.
2, the method for claim 1 is characterized in that, described electric arc and described laser increase along with the increase of described thickness of workpiece to be welded in the horizontal range of described surface of the work to be welded.
3, method as claimed in claim 2 is characterized in that, described electric arc and described laser are 0.5-5mm in the horizontal range of described surface of the work to be welded.
4, the method for claim 1 is characterized in that, the angle between described electric arc and the described laser is smaller or equal to 30 degree.
5, the method for claim 1 is characterized in that, the power of the laser of described middle low power is 50-1000W, and the electric current of described electric arc is 20-300A.
6, the method for claim 1 is characterized in that, described electric arc is tungsten argon arc, melt pole electrical arc or plasma arc.
7, the method for claim 1 is characterized in that, the complex method of described laser and described electric arc is coaxial compound or paraxonic is compound.
8, a kind of welder is characterized in that, described welder comprises: arc welding gun and middle low power laser instrument; Described arc welding gun produces electric arc when connecting power supply; Described arcing forms electric arc melting bath in workpiece to be welded; The laser of described middle low power laser instrument emission middle low power; Described laser emission is in described electric arc melting bath and form lockhole; Described arcing is in described laser, and described laser absorption rate increases, and described lockhole is stable; The described electric arc of described laser controlling shrinks, and weld penetration increases.
9, welder as claimed in claim 8 is characterized in that, described arc welding gun is tungsten argon arc welding gun, melt pole electrical arc welding gun or plasma (welding) torch.
10, welder as claimed in claim 8 is characterized in that, described laser instrument is an optical fiber laser.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200910107260 CN101549440A (en) | 2009-05-11 | 2009-05-11 | Laser-electrical arc composite heat source welding method and welding device |
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| CN 200910107260 CN101549440A (en) | 2009-05-11 | 2009-05-11 | Laser-electrical arc composite heat source welding method and welding device |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102069306A (en) * | 2011-02-11 | 2011-05-25 | 天津大学 | Laser-double-wire pulsed arc composite welding system |
| CN102161134A (en) * | 2009-12-01 | 2011-08-24 | 南车青岛四方机车车辆股份有限公司 | Hybrid welding method of variable-polarity square-wave tungsten electrode argon arc and laser |
| CN102380730A (en) * | 2011-11-14 | 2012-03-21 | 无锡汉神电气有限公司 | Laser combined welding head regulating mechanism |
| CN103958119A (en) * | 2011-09-29 | 2014-07-30 | 林肯环球股份有限公司 | Electrode for GMAW hybrid laser arc welding |
| CN104028893A (en) * | 2014-05-19 | 2014-09-10 | 武汉钢铁(集团)公司 | Method for improving optical fiber laser-MIG arc hybrid welding back forming |
| US9061374B2 (en) | 2010-03-08 | 2015-06-23 | Kobe Steel, Ltd. | Laser/arc hybrid welding method and method for producing welded member using same |
| CN106392348A (en) * | 2016-12-02 | 2017-02-15 | 广东省智能制造研究所 | Additive manufacturing method and additive manufacturing device for aluminum alloy based on laser-double-MIG composite heat source |
| CN110883431A (en) * | 2019-12-03 | 2020-03-17 | 中国航空制造技术研究院 | Laser-arc hybrid welding method for annular welding seam |
| CN112025097A (en) * | 2020-08-13 | 2020-12-04 | 上海交通大学 | Large-cladding-rate arc-laser composite heat source welding regulation and control method |
-
2009
- 2009-05-11 CN CN 200910107260 patent/CN101549440A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102161134A (en) * | 2009-12-01 | 2011-08-24 | 南车青岛四方机车车辆股份有限公司 | Hybrid welding method of variable-polarity square-wave tungsten electrode argon arc and laser |
| US9061374B2 (en) | 2010-03-08 | 2015-06-23 | Kobe Steel, Ltd. | Laser/arc hybrid welding method and method for producing welded member using same |
| CN102069306A (en) * | 2011-02-11 | 2011-05-25 | 天津大学 | Laser-double-wire pulsed arc composite welding system |
| CN103958119A (en) * | 2011-09-29 | 2014-07-30 | 林肯环球股份有限公司 | Electrode for GMAW hybrid laser arc welding |
| CN102380730A (en) * | 2011-11-14 | 2012-03-21 | 无锡汉神电气有限公司 | Laser combined welding head regulating mechanism |
| CN104028893A (en) * | 2014-05-19 | 2014-09-10 | 武汉钢铁(集团)公司 | Method for improving optical fiber laser-MIG arc hybrid welding back forming |
| CN106392348A (en) * | 2016-12-02 | 2017-02-15 | 广东省智能制造研究所 | Additive manufacturing method and additive manufacturing device for aluminum alloy based on laser-double-MIG composite heat source |
| CN110883431A (en) * | 2019-12-03 | 2020-03-17 | 中国航空制造技术研究院 | Laser-arc hybrid welding method for annular welding seam |
| CN110883431B (en) * | 2019-12-03 | 2021-06-08 | 中国航空制造技术研究院 | Laser-arc hybrid welding method for annular welding seam |
| CN112025097A (en) * | 2020-08-13 | 2020-12-04 | 上海交通大学 | Large-cladding-rate arc-laser composite heat source welding regulation and control method |
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Application publication date: 20091007 |