CN106624366A - Double laser-double-wire bypass electric arc compound welding method - Google Patents
Double laser-double-wire bypass electric arc compound welding method Download PDFInfo
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- CN106624366A CN106624366A CN201611035438.9A CN201611035438A CN106624366A CN 106624366 A CN106624366 A CN 106624366A CN 201611035438 A CN201611035438 A CN 201611035438A CN 106624366 A CN106624366 A CN 106624366A
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- welding
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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
- B23K26/346—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
Abstract
The invention discloses a double laser-double-wire bypass electric arc compound welding method. The double laser-double-wire bypass electric arc compound welding method includes that continuous laser beams act on parent metal, and pulse laser acts at a necking position of a welding wire molten drop solid-liquid interface at the upper end of a double-wire welding gun; a welding wire is heated by electric arcs to form molten drops, and the sizes of the molten drops increase gradually while a pulse laser beam emits a specific frequency of laser on the welding wire molten drops at the upper end to exert a specific frequency of laser evaporation recoil force on the molten drops; the laser evaporation recoil force 'cuts' the molten drops, and change of the pulse frequency makes the sizes, transition frequency, flying direction and track of the molten drops change to promote the molten drops to complete transition; the molten drops are isolated from the welding wire under bombardment of the laser evaporation recoil fore and are promoted to enter a molten pool by means of transition, so that deposition efficiency is improved; a computer control system achieves closed-loop control of fixed arc length by detecting change of electric arc voltage. The double laser-double-wire bypass electric arc compound welding method is capable of achieving high-efficiency high-quality great-fusion-depth low-spattering welding with narrow heat-affected zones at a high welding speed.
Description
Technical field
The invention belongs to welding technology field, is related to a kind of compound welding method of double excitation-mariages side-arcing.
Background technology
Gas metal-arc welding (Gas Metal Arc Welding, GMAW) is the most frequently used in current industrial production
A kind of welding method, with the arrival of industry 4.0, modern welding technology to efficient, high-quality, low consumption direction are developed, to welding side
The productivity ratio of method and the control of heat input propose higher and higher requirement.It is efficient weldering to improve speed of welding and deposition rate
The main path for connecing, in conventional bonding technique, the increase of welding current necessarily causes the increase of heat input, under causing welding quality
Drop.Welding quality and production efficiency are improved, it is to realize efficient, the necessary hand of high-quality welding to reduce heat input with weld defect
Section.
With the development of solder technology, laser welding is arisen at the historic moment, and laser welding has energy density high, speed of welding
Hurry up, post welding distortion and residual stress are little, and heat affected area is little, without the need for after welding treatment, the advantage such as depth-to-width ratio is big.But energy transformation ratio
Low, highly reflective material weldability is poor, and workpiece matching requirements are high, and high cost shortcoming governs its development.Double Wire Welding is used as one
Plant efficient welding method increasingly to be paid close attention to by people, the twin arc welding of consumable electrode gas was applied earliest in nineteen fifty-five.Twin-wire MIG has
Have the advantages that speed of welding is high, deposition efficiency is high, heat input heat input is little, weld blowhole few, become International Welding neck at present
The focus of domain research.
Laser Twin wire arc hybrid laser-arc welding technology is a kind of emerging special processing technology, and its major advantage is：(1)
Increase speed of welding and weld penetration, (2) improve welding point adaptability (3) improves weld seam microstructure, reduce weld defect.
Hybrid laser-arc welding is combined together the advantage of Laser Welding and arc welding is good, compared with wire filling laser welding, can be more preferable
The adaptability for improving docking port gap, compared with conventional arc is welded, speed of welding can be significantly increased, increase weld seam and melt
It is deep, while reducing welding deformation amount.
The content of the invention
It is an object of the invention to overcome and improve in existing arc mode welding wire deposition rate and reduce to mother metal heat input
Therebetween contradictory relation, proposes a kind of laser controlling droplet transfer pattern, and less electric arc heat input increases the weldering of deposition rate
Connect method.
For achieving the above object, the present invention is adopted the following technical scheme that：
A kind of compound welding method of double excitation-mariages side-arcing comprises the steps：
First, the locus of continuous laser beam, pulse laser beam and double-wire welding gun is adjusted, makes continuous laser beam act on mother
On material, pulsed laser action is at the constriction of double-wire welding gun upper end welding wire molten drop solid liquid interface；
2nd, continuous laser heating mother metal, forms keyhole, and electric arc heated welding wire forms molten drop, and droplet size gradually increases；
Meanwhile, pulse laser beam is launched the laser of certain frequency and is irradiated on the welding wire molten drop of upper end, to the laser of molten drop certain frequency
Evaporation recoil strength；
3rd, evaporate recoil strength " cutting " molten drop, the change of pulse frequency make droplet size, transition frequency, heading and
Track changes, and promotes molten drop to complete transition；
4th, reduce welding current, adjust pulse laser peak power, pulsewidth and pulse frequency, make molten drop in laser evaporation
Depart from welding wire under the bombardment of counter-force, promote the droplet transfer to enter molten bath, increase deposition efficiency.
5th, the change that computer control system passes through detection arc voltage, realizes the closed-loop control of fixed arc length.
Preferably, the laser is continuous laser beam and pulse laser beam.
Preferably, the continuous impulse laser beam can arbitrarily adjust pulsed laser energy and phase place.
Preferably, the pulse laser frequency is 10-500Hz.
The present invention can obtain following income effect：
With the most significant feature of conventional arc welding method break traditions electric arc deposited speed and heat input it is intrinsic
Collocation, using laser bombardment molten drop, promotes the droplet transfer, realizes welding wire deposition rate and workpiece heat input separate regulation, flexibly
Heat and mass in adjustment welding process.Continuous laser irradiates mother metal, can be effectively increased weld penetration；While pulse laser beam
The bottleneck of welding wire upper end molten drop solid liquid interface is acted on, in the case where double wire welding electric current is reduced, laser evaporation counter-force is also
Can effective " cutting " molten drop, increase molten drop transition frequency, increase welding wire melting rate, improve deposition efficiency, the method can be with
Realize big fusion penetration, low spatter, high weldering speed, the high efficiency of narrow heat affected area (low_input_power), high-quality welding.
Description of the drawings
Fig. 1 is the schematic diagram of the compound welding method of double excitation-mariages side-arcing.
In figure：1- computer control systems, 2- arc length adjustment systems, 3- double-wire welding guns, 4- molten drops, 5- continuous laser beams,
6- pulse laser beams, 7- mother metals, 8 laser instruments
Specific embodiment
The embodiment of the present invention provides a kind of double excitation-mariages side-arcing compound welding method, and what the method was adopted sets
It is standby as shown in figure 1, including：Computer control system 1, the continuous laser beam 5 of arc length adjustment system 2 and pulse laser beam 6.Computer
Control system 1 can make pulse laser beam accurately incident molten according to the voltage change control camber of the collection of arc length adjustment system 2
Drop constriction position；Mother metal 7 be 10mm thickness Q235 mild steel, laser frequency 10-500Hz.
The compound welding method of concrete double excitation-mariages side-arcing is comprised the following steps：
First, the locus of continuous laser beam 5 and pulse laser beam 6 and double-wire welding gun 3 is adjusted, makees continuous laser beam 5
For mother metal 7, pulse laser beam 6 acts on the solid liquid interface bottleneck of molten drop 4；
2nd, the heating of continuous laser beam 5 mother metal 7, electric arc heated welding wire, form molten drop 4, and droplet size gradually increases；Meanwhile,
Pulse laser beam 6 launches the pulsed laser irradiation of 10-500Hz on molten drop 4, and to molten drop 4 laser evaporation recoil strength is applied；
3rd, can dynamic regulation by adjusting the energy collaboration matching continuous laser energy and welding current parameter of pulse laser
Molten drop stress, by welding arc control system 2 arc length is adjusted, it is ensured that at the accurate incidence molten drop constriction of pulse laser；
4th, by the wire feed rate of change wire-feed motor, adjusting the locus of pulse laser beam 6 can control electric arc height
Degree, computer control system 1 goes out light time and pulse frequency according to control pulse laser beam 6.
The compound welding method of the double excitation-mariages side-arcing of the present invention, the electric arc deposited speed that breaks traditions and heat it is defeated
Enter intrinsic collocation, using laser bombardment molten drop, promote the droplet transfer, realize that welding wire deposition rate and workpiece heat input are separately adjusted
Section, is adjusted flexibly the heat and mass in welding process.Adjust the space bit of continuous laser beam, pulse laser beam and double-wire welding gun
Put, continuous laser beam is acted on mother metal, constriction of the pulsed laser action in double-wire welding gun upper end welding wire molten drop solid liquid interface
Place；Continuous laser heats mother metal, forms keyhole, and electric arc heated welding wire forms molten drop, and droplet size gradually increases；Meanwhile, pulse
Radiating laser beams go out the laser of certain frequency and are irradiated on the welding wire molten drop of upper end, recoil to the laser evaporation of molten drop certain frequency
Power；There is droplet size, transition frequency, heading and track in evaporation recoil strength " cutting " molten drop, the change of pulse frequency
Change, promotes molten drop to complete transition.Reduce welding current, adjust pulse laser peak power, pulsewidth and pulse frequency, make molten drop
Depart from welding wire under the bombardment of laser evaporation counter-force, promote the droplet transfer to enter molten bath, increase deposition efficiency, computer controls system
The change that system passes through detection arc voltage, realizes the closed-loop control of fixed arc length.With existing laser-arc hybrid laser-arc welding
Method is compared, and the present invention can realize big fusion penetration, low spatter, high weldering speed, the high efficiency of narrow heat affected area (low_input_power), high-quality
The welding of amount, with high precision and stability, reproducible beneficial effect.
The present invention is that one kind utilizes double excitation and mariages side-arcing NEW TYPE OF COMPOSITE mode, using continuous wave laser action in mother
On material, increase weld penetration, pulsed laser action on welding wire, molten drop is promoted in smaller current using laser bombardment molten drop at one end
In the range of transition, realize the stable transition of molten drop well in the case where electric current and heat input is not increased, increase speed of welding and
The heat input to mother metal is reduced while weld penetration, spatter is reduced, big fusion penetration, low spatter, high weldering speed, narrow hot shadow is realized
Ring high efficiency, the high-quality welding of area (low_input_power).
Above content is to combine specific preferred embodiment further description made for the present invention, it is impossible to assert
The present invention be embodied as be confined to these explanations.For general technical staff of the technical field of the invention,
On the premise of present inventive concept, its framework form can be flexible and changeable, can be with subseries product.Simply make some
Simple deduction or replace, are regarded as belonging to the scope of patent protection that the present invention is determined by the claims submitted to.
Claims (4)
1. the welding method that double excitation-mariages side-arcing is combined, it is characterised in that comprise the steps：
Step one, the locus for adjusting continuous laser beam, pulse laser beam and double-wire welding gun, make continuous laser beam act on mother
On material, pulsed laser action is at the constriction of double-wire welding gun upper end welding wire molten drop solid liquid interface；
Step 2, electric arc heated welding wire, form molten drop, and droplet size gradually increases, meanwhile, pulse laser beam launches certain frequency
The laser of rate is irradiated on the welding wire molten drop of upper end, to the laser evaporation recoil strength of molten drop certain frequency；
Step 3, evaporation recoil strength cutting molten drop, the change of pulse frequency makes droplet size, transition frequency, heading and rail
Mark changes, and promotes molten drop to complete transition；
Step 4, make molten drop depart from welding wire under the bombardment of laser evaporation counter-force, promote the droplet transfer to enter molten bath；
The change that step 5, computer control system pass through detection arc voltage, realizes the closed-loop control of fixed arc length.
2. the welding method that double excitation according to claim 1-mariages side-arcing is combined, it is characterised in that described to swash
Light is continuous laser beam and pulse laser beam.
3. the welding method that double excitation according to claim 1-mariages side-arcing is combined, it is characterised in that the company
Continuous pulse laser beam can arbitrarily adjust pulsed laser energy and phase place.
4. the welding method that double excitation according to claim 1-mariages side-arcing is combined, it is characterised in that the arteries and veins
Impulse light frequency is 10-500Hz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611035438.9A CN106624366A (en) | 2016-11-18 | 2016-11-18 | Double laser-double-wire bypass electric arc compound welding method |
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|---|---|---|---|
| CN201611035438.9A CN106624366A (en) | 2016-11-18 | 2016-11-18 | Double laser-double-wire bypass electric arc compound welding method |
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| CN201611035438.9A Pending CN106624366A (en) | 2016-11-18 | 2016-11-18 | Double laser-double-wire bypass electric arc compound welding method |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107999962A (en) * | 2017-11-24 | 2018-05-08 | 哈尔滨工业大学 | A kind of method for laser welding of double CMT/ mariages CMT auxiliary |
| CN108515268A (en) * | 2018-03-22 | 2018-09-11 | 温州大学 | A kind of welding method using hybrid laser arc-welding |
| CN109807417A (en) * | 2019-03-24 | 2019-05-28 | 北京工业大学 | A kind of method that laser actively cuts welding wire control droplet temperature |
| CN109807419A (en) * | 2019-03-24 | 2019-05-28 | 北京工业大学 | A kind of molten welding method of bidifly optical scanning |
| CN110170746A (en) * | 2019-07-02 | 2019-08-27 | 辽宁工业大学 | A kind of coaxial double focus laser-TIG arc hybrid welding method |
| CN111299837A (en) * | 2019-11-27 | 2020-06-19 | 北京工业大学 | Efficient laser additive manufacturing method based on wire thermal conduction welding |
| CN111571017A (en) * | 2020-04-30 | 2020-08-25 | 南京理工大学 | Double-laser-beam electric-arc multi-heat-source composite material increase method |
| CN115740756A (en) * | 2022-11-25 | 2023-03-07 | 沪东中华造船(集团)有限公司 | Double-laser-double-arc high-speed welding device and method |
| CN115958331A (en) * | 2021-10-13 | 2023-04-14 | 南通昊海电器有限公司 | Welding method and welding device for composite copper bar conducting layer |
| CN115971662A (en) * | 2022-12-06 | 2023-04-18 | 哈尔滨焊接研究院有限公司 | Narrow gap laser-double arc double wire composite welding method |
| CN115740756B (en) * | 2022-11-25 | 2024-05-14 | 沪东中华造船(集团)有限公司 | Double-laser-double-arc high-speed welding device and method |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107999962A (en) * | 2017-11-24 | 2018-05-08 | 哈尔滨工业大学 | A kind of method for laser welding of double CMT/ mariages CMT auxiliary |
| CN107999962B (en) * | 2017-11-24 | 2019-04-16 | 哈尔滨工业大学 | A kind of method for laser welding of double CMT/ mariages CMT auxiliary |
| CN108515268A (en) * | 2018-03-22 | 2018-09-11 | 温州大学 | A kind of welding method using hybrid laser arc-welding |
| CN109807419B (en) * | 2019-03-24 | 2021-08-17 | 北京工业大学 | Double-laser scanning molten strip welding method |
| CN109807419A (en) * | 2019-03-24 | 2019-05-28 | 北京工业大学 | A kind of molten welding method of bidifly optical scanning |
| CN109807417A (en) * | 2019-03-24 | 2019-05-28 | 北京工业大学 | A kind of method that laser actively cuts welding wire control droplet temperature |
| CN110170746A (en) * | 2019-07-02 | 2019-08-27 | 辽宁工业大学 | A kind of coaxial double focus laser-TIG arc hybrid welding method |
| CN110170746B (en) * | 2019-07-02 | 2020-10-27 | 辽宁工业大学 | Coaxial bifocal laser-TIG electric arc hybrid welding method |
| CN111299837A (en) * | 2019-11-27 | 2020-06-19 | 北京工业大学 | Efficient laser additive manufacturing method based on wire thermal conduction welding |
| CN111571017A (en) * | 2020-04-30 | 2020-08-25 | 南京理工大学 | Double-laser-beam electric-arc multi-heat-source composite material increase method |
| CN115958331A (en) * | 2021-10-13 | 2023-04-14 | 南通昊海电器有限公司 | Welding method and welding device for composite copper bar conducting layer |
| CN115740756A (en) * | 2022-11-25 | 2023-03-07 | 沪东中华造船(集团)有限公司 | Double-laser-double-arc high-speed welding device and method |
| CN115740756B (en) * | 2022-11-25 | 2024-05-14 | 沪东中华造船(集团)有限公司 | Double-laser-double-arc high-speed welding device and method |
| CN115971662A (en) * | 2022-12-06 | 2023-04-18 | 哈尔滨焊接研究院有限公司 | Narrow gap laser-double arc double wire composite welding method |
| CN115971662B (en) * | 2022-12-06 | 2023-11-14 | 哈尔滨焊接研究院有限公司 | Narrow-gap laser-double-arc double-wire composite welding method |
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