CN106181043A - A kind of welding method improving hybrid Laser-Arc Welding process stability - Google Patents
A kind of welding method improving hybrid Laser-Arc Welding process stability Download PDFInfo
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- CN106181043A CN106181043A CN201610842690.4A CN201610842690A CN106181043A CN 106181043 A CN106181043 A CN 106181043A CN 201610842690 A CN201610842690 A CN 201610842690A CN 106181043 A CN106181043 A CN 106181043A
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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
-
- 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
- B23K26/14—Working by laser beam, e.g. welding, cutting or boring using a fluid stream, e.g. a jet of gas, in conjunction with the laser beam; Nozzles therefor
-
- 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 welding method improving hybrid Laser-Arc Welding process stability; it relates to materials processing engineering field; the present invention carries out K cryogenic treatment to protective gas; and single paraxonic protection gas is added in arc welding gun side; its axis direction points to laser action point and top thereof; i.e. produce at photo plasma during welding, it is achieved improve the stability of described welding process.The method welding efficiency of the present invention is high, suppression pore and fire check, improves mechanical property, improves long weld seam welding stability.
Description
Technical field
The present invention relates to materials processing engineering field, be specifically related to a kind of raising laser-arc hybrid welding in industry process stabilization
The welding method of property.
Background technology
Laser-arc hybrid welding in industry is in the phase at the end of the seventies in last century, British scholar W.M.Steen propose at first to go forward side by side
Row test.Laser and two kinds of thermals source of electric arc are combined by it, overcome the deficiency of single heat source, thus obtain energization and utilize
Rate, the effect of raising welding process stability.Use the laser-arc hybrid welding, have that speed of welding is fast, weld penetration
Greatly, heat input is low, deform the advantages such as little, thus reaches the effect of low cost, high efficiency, high-adaptability.It is especially suitable for cut deal
Welding.
At present, some problems below existing when using laser-arc hybrid welding in industry:
(1) there is " finite energy enhancing " phenomenon in laser-arc hybrid welding in industry, i.e. there is a matching range, works as laser
During with electric arc combined welding, only in certain current range, laser and electric arc interact the effect of enhancing, otherwise,
Composite welding effect is even worse than single laser welding；
(2) when using laser-arc hybrid welding in industry, during welding electric arc combined in particular by laser-GMA, to compound
Welding a weld penetration and require relatively big, the demand of laser power is higher, increases the cost of laser instrument, and works as laser power very
Time big, the counteracting force of laser plasma can seriously hinder GMA Welding Molten Drop transition, causes GMA droplet transfer difficulty, molten drop
Transition is unstable；
(3) when using laser-arc hybrid welding in industry to carry out bottoming welding, owing to electric arc is attracted by groove sidewall, two are caused
Side large area fusing, is likely to result in the defect such as pore, incomplete fusion in follow-up welding process；
(4) relatively big due to laser power, increase in welding process plasma accumulative effect, be easily caused laser effective
Power reduces, and reduces rapidly at weld seam rear back reinforcement and lack of penetration phenomenon even occurs；
(5) when thick plates, due to action of plasma, plasma has certain loss to laser energy, therefore, swashs
Photocoagulation energy input is relatively big, causes welding stress and welding deformation amount relatively big, and heat affected area crystal grain is easily grown up and brittle.
From the above, it can be seen that during laser-arc hybrid welding in industry, laser plasma is to affect Combined Welding to take over
Journey stability and the key factor of welding effect thereof.
Have more currently, with respect to suppressing laser plasma, the method improving welding process stability during composite welding
Change protection gas kind, adjust welding parameter and applied mechanical power, magnetic field etc..As patent CN201310039463.4 proposes one
Laser-TIG electric arc paraxonic the complex welding method in external high-frequency magnetic field and device, patent CN201320057081.X proposes one
Planting the laser-TIG electric arc coaxial hybrid welding connection device in a kind of external high-frequency magnetic field, patent CN201320198864.X proposes one
Plant the laser fusion pole electrical arc paraxonic composite welding apparatus in external high-frequency magnetic field, but be all electric arc to be improved, to carry above
High composite welding effect, the braking measure to laser is less.
Based on this, the present invention proposes a kind of new side suppressing laser plasma to improve composite welding process stability
A kind of welding method improving laser-arc hybrid welding in industry process stability of method.
Summary of the invention
It is contemplated that for problem present in Laser-MIG Composite Welding, and provide a kind of cryogenic gas protection to swash
Optical-electronic arc complex welding method.
The present invention, on the basis of conventional laser-electric arc combined welding, improves tool to welding protection pneumatic transmission device of air
Body implementation includes:
(1) pipeline of being supplied gas by common plastics changes the cryogenic gas feed-line of adiabatic heat-insulation into, directly uses adiabatic gas
Cryogenic gas in Ping.
Or use other devices that gas is cooled down such as to use refrigeration machine/air-cooler to protection gas cylinder and appendix (2)
Line cools down, and protection temperature can be made to be reduced to subzero about 50 degree by room temperature；Use the cooling bath (temperature that can be provided by
It is generally in the range of 13 to-196 DEG C) protection gas cylinder is cooled down, reach lower temperature.
(3) add in arc welding gun side single paraxonic protection gas, its axis direction point to laser action point and on
Side, i.e. produces during welding at photo plasma, as shown in Figure 1.
A kind of welding method improving laser-arc hybrid welding in industry process stability of the present invention, it is according to following step
Suddenly carry out:
Step one: before welding, is processed into double V-groove, U-shaped groove or Y type groove by the position to be welded of workpiece to be welded, and
Groove after processing and both side surface are polished and cleaned, the workpiece to be welded after polishing or cleaning is fixed on welding tooling
On fixture；
Step 2: utilize fixture to protect gas jets to rigidly fix with arc welding gun and paraxonic laser head；
Step 3: welding condition is set:
Backing welding: defocusing amount is 3～3mm, laser power is 3000～8000W, and arc current is 100～200A, swashs
Photoelectric arc spacing is 3～5mm, and speed of welding is 0.6～2m/min；Welding gun protection gas uses pure Ar gas or CO2With Ar gaseous mixture,
Protection throughput is 20～40L/min, and protection temperature is-30 DEG C～-160 DEG C, and paraxonic protection gas uses Ar gas, and flow is 15
～30L/min, temperature is-50 DEG C～-160 DEG C；
Fill weldering: defocusing amount is 3～3mm, and laser power is 400～800W, and arc current is 200～400A, laser
Electric arc spacing is 2～5mm, and speed of welding is 50～600mm/min, and welding gun protection gas uses Ar gas, and flow is 10～20L/
Min, protection temperature is-30 DEG C～-160 DEG C；Paraxonic protection gas uses Ar gas, and flow is 15～30L/min, and temperature is-50
DEG C～-160 DEG C；
Step 4: during actual welding, uses robot integrated system to control welding condition, first electric arc and rises
Arc, then after arc stability 1～2s, laser control sends laser, finally controls robot and makes laser work head and welding gun
Associated movement completes welding process.
The present invention welds compared to traditional laser-electric arc mainly some advantage following:
1, welding efficiency improves, and owing to protecting the strong cooling effect of gas, electric arc substantially shrinks, electric current density improves, fusion penetration
Increase and molten width reduction, less groove can be used to weld, especially when cut deal welds, further compression arc, reduces
Sidewall melts., arc welding gun is cooled down meanwhile, reduces tungsten electrode scaling loss/avoid welding gun overheated, can continuously the long period enter
The big normative operation of row；
2, suppression pore and fire check, owing to molten bath rate of cooling improves, is conducive to suppressing conventional laser-electric arc combined weldering
Time the metallurgy type pore that is easily generated of melt run position and Weld pipe mill fire check, reduce weld defect；
3, improving mechanical property, under bigger rate of cooling, weld grain refines, and column crystal direction is varied from, with
Time due to thermal weld stress reduce, welding joint softened phenomenon makes moderate progress, improve welding point comprehensive mechanical property.
4, long weld seam welding stability is improved, owing to paraxonic protection gas can effectively suppress laser plasma, it is ensured that entering
During row long weld seam welding, weld seam monolithic molding is good.
Accompanying drawing explanation
Fig. 1 is the paraxonic protection gas schematic diagram of the present invention；
Fig. 2 is macroscopical metallograph that embodiment 2 welds 20mm thickness mild steel；
Fig. 3 is macroscopical metallograph that embodiment 1 welds 20mm thickness mild steel；
Fig. 4 is the welding heat affected zone figure that embodiment 2 welds 20mm thickness mild steel；
Fig. 5 is the welding heat affected zone figure that embodiment 1 welds 20mm thickness mild steel；
Fig. 6 is the back of weld shape appearance figure that embodiment 2 carries out when bottoming is welded；
Fig. 7 is the back of weld shape appearance figure that embodiment 1 carries out when bottoming is welded；
Fig. 8 is macroscopical metallograph that embodiment 3 welds 6.6mm thickness high-strength steel.
Detailed description of the invention
Detailed description of the invention one: a kind of welding improving laser-arc hybrid welding in industry process stability of present embodiment
Method, it follows the steps below:
Step one: before welding, is processed into double V-groove, U-shaped groove or Y type groove by the position to be welded of workpiece to be welded, and
Groove after processing and both side surface are polished and cleaned, the workpiece to be welded after polishing or cleaning is fixed on welding tooling
On fixture；
Step 2: utilize fixture to protect gas jets to rigidly fix with arc welding gun and paraxonic laser head；
Step 3: welding condition is set:
Backing welding: defocusing amount is 3～3mm, laser power is 3000～8000W, and arc current is 100～200A, swashs
Photoelectric arc spacing is 3～5mm, and speed of welding is 0.3～3m/min；Welding gun protection gas uses pure Ar gas or CO2 Yu Ar gaseous mixture,
Protection throughput is 20～40L/min, and protection temperature is-30 DEG C～-160 DEG C, and paraxonic protection gas uses Ar gas, and flow is 15
～30L/min, temperature is-50 DEG C～-160 DEG C；
Fill weldering: defocusing amount is 3～3mm, and laser power is 400～800W, and arc current is 200～400A, laser
Electric arc spacing is 2～5mm, and speed of welding is 50～800mm/min, and welding gun protection gas uses Ar gas, and flow is 10～20L/
Min, protection temperature is-30 DEG C～-160 DEG C；Paraxonic protection gas uses Ar gas, and flow is 15～30L/min, and temperature is-50
DEG C～-160；
Step 4: during actual welding, uses robot integrated system to control welding condition, first electric arc and rises
Arc, then after arc stability 1～2s, laser control sends laser, finally controls robot and makes laser work head and welding gun
Associated movement completes welding process.
Present embodiment is during backing welding and filling weldering, if needing wire feed, then wire feed rate is 2～6m/
min。
Present embodiment is in the laser-MAG compound welding of additional paraxonic protection gas, and laser instrument can use CO2Gas
Laser instrument, YAG solid state laser, semiconductor laser, wherein to use the YAG solid state laser of fiber-optic transfer most preferably, because
Its more efficient and environmental protection；Welding machine can use the Fu Nisi tig arc welding machine of model MV4000, maximum weld electric current 400A；Fu Ni
The MIG/MAG welding machine of this company's T PS4000, electric current range of accommodation is 3-400A, and voltage regulation limits is 14.2-34V；According to need
Ask and all can realize pulse welding.Other equipment include, 1 KUKA robot, and in welding process, the adjustment of technological parameter is passed through
KUKA robotic programming realizes；1 good fortune Nice wire-feed motor, to ensure that welding wire is accurately sent into.
Detailed description of the invention two: present embodiment is unlike detailed description of the invention one: workpiece to be welded is steel, aluminum or titanium
Alloy.Other is identical with detailed description of the invention one.
Detailed description of the invention three: present embodiment is unlike detailed description of the invention one: during backing welding, welding gun is protected
Protect gas and use CO2It is to be mixed by any ratio with Ar gaseous mixture.Other is identical with detailed description of the invention one.
Detailed description of the invention four: present embodiment is unlike detailed description of the invention one: during backing welding, welding gun is protected
Protect gas and use CO2With Ar gaseous mixture, the temperature of protection gas is 0 DEG C～-40 DEG C.Other is identical with detailed description of the invention one.
Detailed description of the invention five: present embodiment is unlike detailed description of the invention one: during backing welding, welding gun is protected
Protect gas and use CO2With Ar gaseous mixture, the temperature of protection gas is 0 DEG C～-30 DEG C.Other is identical with detailed description of the invention one.
Detailed description of the invention six: present embodiment is unlike detailed description of the invention one: during backing welding, welding gun is protected
Protect gas and use CO2With Ar gaseous mixture, the temperature of protection gas is 0 DEG C～-20 DEG C.Other is identical with detailed description of the invention one.
Detailed description of the invention seven: present embodiment is unlike detailed description of the invention one: during backing welding, welding gun is protected
Protect gas and use CO2With Ar gaseous mixture, the temperature of protection gas is 0 DEG C～-10 DEG C.Other is identical with detailed description of the invention one.
Detailed description of the invention eight: present embodiment is unlike detailed description of the invention one: during backing welding, welding gun is protected
Protect temperature and be-50 DEG C～-160 DEG C.Other is identical with detailed description of the invention one.
Detailed description of the invention nine: present embodiment is unlike detailed description of the invention one: during backing welding, welding gun is protected
Protect temperature and be-50 DEG C～-120 DEG C.Other is identical with detailed description of the invention one.
Detailed description of the invention ten: present embodiment is unlike detailed description of the invention one: during backing welding, welding gun is protected
Protect temperature and be-50 DEG C～-100 DEG C.Other is identical with detailed description of the invention one.
Detailed description of the invention 11: present embodiment is unlike detailed description of the invention one: welding gun during backing welding
Protection temperature is-50 DEG C～-80 DEG C.Other is identical with detailed description of the invention one.
Detailed description of the invention 12: present embodiment is unlike detailed description of the invention one: welding gun during backing welding
Protection temperature is-50 DEG C～-70 DEG C.Other is identical with detailed description of the invention one.
Detailed description of the invention 13: present embodiment is unlike detailed description of the invention one: paraxonic during backing welding
Protection temperature is-80 DEG C～-120 DEG C.Other is identical with detailed description of the invention one.
Detailed description of the invention 14: present embodiment is unlike detailed description of the invention one: paraxonic during backing welding
Protection temperature is-80 DEG C～-160 DEG C.Other is identical with detailed description of the invention one.
Detailed description of the invention 15: present embodiment is unlike detailed description of the invention one: paraxonic during backing welding
Protection temperature is-80 DEG C～-120 DEG C.Other is identical with detailed description of the invention one.
Detailed description of the invention 16: present embodiment is unlike detailed description of the invention one: paraxonic during backing welding
Protection temperature is-80 DEG C～-100 DEG C.Other is identical with detailed description of the invention one.
Detailed description of the invention 17: present embodiment is unlike detailed description of the invention one: fill welding gun during weldering
Protection temperature is-50 DEG C～-160 DEG C.Other is identical with detailed description of the invention one.
Detailed description of the invention 18: present embodiment is unlike detailed description of the invention one: fill welding gun during weldering
Protection temperature is-50 DEG C～-140 DEG C.Other is identical with detailed description of the invention one.
Detailed description of the invention 19: present embodiment is unlike detailed description of the invention one: fill welding gun during weldering
Protection temperature is-50 DEG C～-120 DEG C.Other is identical with detailed description of the invention one.
Detailed description of the invention 20: present embodiment is unlike detailed description of the invention one: fill welding gun during weldering
Protection temperature is-50 DEG C～-100 DEG C.Other is identical with detailed description of the invention one.
Detailed description of the invention 21: present embodiment is unlike detailed description of the invention one: weld during filling weldering
Rifle protection temperature is-50 DEG C～-80 DEG C.Other is identical with detailed description of the invention one.
Detailed description of the invention 22: present embodiment is unlike detailed description of the invention one: other during filling weldering
Axle protection temperature is-80 DEG C～-160 DEG C.Other is identical with detailed description of the invention one.
Detailed description of the invention 23: present embodiment is unlike detailed description of the invention one: other during filling weldering
Axle protection temperature is-80 DEG C～-140 DEG C.Other is identical with detailed description of the invention one.
Detailed description of the invention 24: present embodiment is unlike detailed description of the invention one: other during filling weldering
Axle protection temperature is-80 DEG C～-120 DEG C.Other is identical with detailed description of the invention one.
Detailed description of the invention 25: present embodiment is unlike detailed description of the invention one: other during filling weldering
Axle protection temperature is-80 DEG C～-100 DEG C.Other is identical with detailed description of the invention one.
Present invention is not limited only to the content of the respective embodiments described above, one of them or the group of several detailed description of the invention
Contract sample can also realize the purpose of invention.
By above example checking beneficial effects of the present invention:
The method and the conventional laser-MIG complex welding method that are utilized respectively the present invention carry out 20mm thickness mild steel butt welding
The backing welding of seam.Specific experiment method is as follows:
Embodiment 1
Using the inventive method to carry out the backing welding of 20mm thickness mild steel butt weld, detailed process is as follows:
Step one: before welding, according to thickness of slab, is processed into Y type groove by the position to be welded of workpiece to be welded, and root face height is
10mm, bevel angle is 20 DEG C, and the groove after processing and both side surface are polished or cleaned, after polishing or cleaning
Workpiece to be welded is fixed on welding tool setup；
Step 2: utilize special fixture to be rigidly fixed with MIG welding gun (paraxonic protection gas jets) by laser head；
Step 3: welding condition is set:
Defocusing amount is-2mm, laser power 6500W, arc current 140A, laser-arc spacing 3mm, speed of welding 1.2m/
min.Welding gun protection gas uses Ar gas, and flow is at 25L/min, and-60 DEG C, paraxonic protection gas uses Ar gas, flow at 25L/min,
Temperature is set to-83 DEG C.
Step 4: during actual welding, uses robot integrated system to control welding condition, first MIG electricity
The arc starting the arc, then arc stability 1～2s, then laser control sends laser, finally controls robot and makes laser work head
Welding process is completed with MIG welding gun associated movement.
Embodiment 2
Using conventional method to carry out the backing welding of 20mm thickness mild steel butt weld, detailed process is as follows:
Step one: before welding, according to thickness of slab, is processed into U-shaped groove by the position to be welded of workpiece to be welded, and root face height is
10mm, bevel angle is 20 DEG C, and the groove after processing and both side surface are polished or cleaned, after polishing or cleaning
Workpiece to be welded is fixed on welding tool setup；
Step 2: utilize special fixture to be rigidly fixed with MIG welding gun by laser head；
Step 3: welding condition is set:
Defocusing amount is-2mm, laser power 6500W, arc current 140A, laser-arc spacing 3mm, speed of welding 1.2m/
min；Welding gun protection gas uses Ar gas, and flow is in 30L/min, room temperature (20 DEG C)；
Step 4: during actual welding, uses robot integrated system to control welding condition, first MIG electricity
The arc starting the arc, then arc stability 1～2s, then laser control sends laser, finally controls robot and makes laser work head
Welding process is completed with MIG welding gun associated movement.
Weld seam when Fig. 2 to Fig. 5 respectively uses conventional laser-MIG composite welding and the inventive method to carry out backing welding
Cross Section Morphology, it can be seen that when using this method to carry out backing welding, can the root face of a through welding 10mm, and welding process is steady
Fixed, droplet transfer behavior is good, uniformity, and sidewall fusing amount reduces, without obvious bad defect.Arc region and hot shadow simultaneously
Ring district's scope to reduce, as shown in Figure 4 and Figure 5.
Fig. 6 and Fig. 7 respectively uses conventional laser-MIG composite welding and the inventive method to carry out weldering when bottoming is welded
Seam back side pattern, it can be seen that increase rapidly due to laser plasma during conventional method welding, cause weld seam rear portion not melted
Thoroughly, and when similar power uses this method, welding process is stable, and back side penetration is uniform, and energy attenuation is inconspicuous.
Embodiment 3
Using the inventive method to carry out 6.6mm thickness high-strength steel butt weld, detailed process is as follows:
Step one: before welding, according to thickness of slab, is processed into Y type groove by the position to be welded of workpiece to be welded, and root face height is
3mm, bevel angle is 45 DEG C, and the groove after processing and both side surface are polished or cleaned, after polishing or cleaning
Workpiece to be welded is fixed on welding tool setup；
Step 2: utilize special fixture to be rigidly fixed with TIG welding gun (paraxonic protection gas jets) by laser head；
Step 3: welding condition is set:
Defocusing amount is-2mm, laser power 3400W, arc current 140A, laser-arc spacing 3mm, speed of welding
800mm/min.Welding gun protection gas uses Ar gas, and flow is at 25L/min, and-60 DEG C, paraxonic protection gas uses Ar gas, and flow exists
25L/min, temperature is set to-83 DEG C, wire feed rate 2.5m/min.
Fill weldering: defocusing amount is 2mm, and laser power is 800W, and arc current is 260A, and laser-arc spacing is 3mm,
Speed of welding is 600mm/min, and welding gun protection gas uses Ar gas, and flow is 20L/min, and protection temperature is-30 DEG C；Paraxonic is protected
Protecting gas and use Ar gas, flow is 15L/min, and temperature is-60 DEG C, wire feed rate 4m/min；
Step 4: during actual welding, uses robot integrated system to control welding condition, first MIG electricity
The arc starting the arc, then after arc stability 1～2s, then laser control sends laser, finally controls robot and makes laser work
Head and TIG welding gun associated movement complete welding process.
The metallograph of the present embodiment welding 6.6mm thickness high-strength steel is as shown in Figure 8.
The method of the present embodiment has the advantage that
1, welding efficiency improves, and owing to protecting the strong cooling effect of gas, electric arc substantially shrinks, electric current density improves, fusion penetration
Increase and molten width reduction, less groove can be used to weld, especially when cut deal welds, further compression arc, reduces
Sidewall melts., arc welding gun is cooled down meanwhile, reduces tungsten electrode scaling loss/avoid welding gun overheated, can continuously the long period enter
The big normative operation of row；
2, suppression pore and fire check, owing to molten bath rate of cooling improves, is conducive to suppressing conventional laser-electric arc combined weldering
Time the metallurgy type pore that is easily generated of melt run position and Weld pipe mill fire check, reduce weld defect；
3, improving mechanical property, under bigger rate of cooling, weld grain refines, and column crystal direction is varied from, with
Time due to thermal weld stress reduce, welding joint softened phenomenon makes moderate progress, improve welding point comprehensive mechanical property.
4, long weld seam welding stability is improved, owing to paraxonic protection gas can effectively suppress laser plasma, it is ensured that entering
During row long weld seam welding, weld seam monolithic molding is good.
Claims (10)
1. the welding method improving laser-arc hybrid welding in industry process stability, it is characterised in that it is according to following step
Suddenly carry out:
Step one: before welding, is processed into double V-groove, U-shaped groove or Y type groove by the position to be welded of workpiece to be welded, and to adding
Groove and both side surface after work are polished and clean, and the workpiece to be welded after polishing or cleaning is fixed on welding tool setup
On；
Step 2: utilize fixture to protect gas jets to rigidly fix with arc welding gun and paraxonic laser head；
Step 3: welding condition is set:
Backing welding: defocusing amount is 3～3mm, laser power is 3000～8000W, and arc current is 100～200A, laser electricity
Arc spacing is 3～5mm, and speed of welding is 0.6～2m/min；Welding gun protection gas uses pure Ar gas or CO2With Ar gaseous mixture, protection
Throughput is 20～40L/min, protection temperature be-30 DEG C～-160 DEG C, paraxonic protection gas employing Ar gas, flow be 15～
30L/min, temperature is-50 DEG C～-160 DEG C；
Fill weldering: defocusing amount is 3～3mm, and laser power is 400～800W, and arc current is 200～400A, laser-arc
Spacing is 2～5mm, and speed of welding is 50～600mm/min, and welding gun protection gas uses Ar gas, and flow is 10～20L/min, protects
Protect temperature and be-30 DEG C～-160 DEG C；Paraxonic protection gas use Ar gas, flow is 15～30L/min, temperature be-50 DEG C～-
160℃；
Step 4: during actual welding, uses robot integrated system to control welding condition, first Arc,
Then arc stability 1～2s, laser control sends laser, finally controls robot and laser work head and welding gun are transported jointly
Move welding process.
A kind of welding method improving laser-arc hybrid welding in industry process stability the most according to claim 1, its feature
It is that workpiece to be welded is steel, aluminum or titanium alloy.
A kind of welding method improving laser-arc hybrid welding in industry process stability the most according to claim 1, its feature
During being backing welding, welding gun protection gas uses CO2It is to be mixed by any ratio with Ar gaseous mixture.
4. according to a kind of welding method improving laser-arc hybrid welding in industry process stability described in claim 1 or 3, its
During being characterised by backing welding, welding gun protection gas uses CO2With Ar gaseous mixture, the temperature of protection gas is 0 DEG C～-40 DEG C.
A kind of welding method improving laser-arc hybrid welding in industry process stability the most according to claim 1, its feature
During being backing welding, welding gun protection temperature is-50 DEG C～-160 DEG C.
A kind of welding method improving laser-arc hybrid welding in industry process stability the most according to claim 5, its feature
During being backing welding, welding gun protection temperature is-80 DEG C～-120 DEG C.
A kind of welding method improving laser-arc hybrid welding in industry process stability the most according to claim 1, its feature
During being backing welding, paraxonic protection temperature is-80 DEG C～-120 DEG C.
A kind of welding method improving laser-arc hybrid welding in industry process stability the most according to claim 7, its feature
During being backing welding, paraxonic protection temperature is-80 DEG C～-100 DEG C.
A kind of welding method improving laser-arc hybrid welding in industry process stability the most according to claim 1, its feature
During being to fill weldering, welding gun protection temperature is-50 DEG C～-120 DEG C.
A kind of welding method improving laser-arc hybrid welding in industry process stability the most according to claim 1, it is special
Levy paraxonic protection temperature during being to fill weldering and be-80 DEG C～-120 DEG C.
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| CN106862771A (en) * | 2017-03-17 | 2017-06-20 | 石家庄铁道大学 | A kind of laser assisted melt pole electrical arc for high temperature alloy increases material connection method |
| CN107283060A (en) * | 2017-06-07 | 2017-10-24 | 广东省焊接技术研究所（广东省中乌研究院） | A kind of laser-arc is combined multi-pass welding method |
| CN107971635A (en) * | 2017-11-24 | 2018-05-01 | 哈尔滨工业大学 | A kind of cut deal angle joint light beam-welding wire dislocation laser-MAG compound welding method |
| CN108971758A (en) * | 2018-10-24 | 2018-12-11 | 哈尔滨阿尔特机器人技术有限公司 | A kind of laser-compound backing weld method of heated filament MIG based on light beam scanning |
| CN109352180A (en) * | 2018-12-06 | 2019-02-19 | 哈尔滨工业大学 | A kind of compound sealing method of edge joint laser-electric arc of internal pressurization |
| CN109909583A (en) * | 2019-04-10 | 2019-06-21 | 郑州煤矿机械集团股份有限公司 | Multi-layer multi-pass welding method of the arc welding robot in hydraulic support welding |
| CN110293322A (en) * | 2019-07-01 | 2019-10-01 | 武汉金顿激光科技有限公司 | A kind of laser electrical arc complex welding method of martensitic precipitation |
| CN111702335A (en) * | 2020-06-05 | 2020-09-25 | 成都先进金属材料产业技术研究院有限公司 | Process method for welding 304 stainless steel plate |
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| CN113798677A (en) * | 2021-09-14 | 2021-12-17 | 江苏科技大学 | Welding method of duplex stainless steel and titanium alloy |
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| CN106862771A (en) * | 2017-03-17 | 2017-06-20 | 石家庄铁道大学 | A kind of laser assisted melt pole electrical arc for high temperature alloy increases material connection method |
| CN106862771B (en) * | 2017-03-17 | 2019-03-05 | 石家庄铁道大学 | A kind of laser assisted melt pole electrical arc increasing material connection method for high temperature alloy |
| CN107283060A (en) * | 2017-06-07 | 2017-10-24 | 广东省焊接技术研究所（广东省中乌研究院） | A kind of laser-arc is combined multi-pass welding method |
| CN107971635A (en) * | 2017-11-24 | 2018-05-01 | 哈尔滨工业大学 | A kind of cut deal angle joint light beam-welding wire dislocation laser-MAG compound welding method |
| CN108971758A (en) * | 2018-10-24 | 2018-12-11 | 哈尔滨阿尔特机器人技术有限公司 | A kind of laser-compound backing weld method of heated filament MIG based on light beam scanning |
| CN109352180A (en) * | 2018-12-06 | 2019-02-19 | 哈尔滨工业大学 | A kind of compound sealing method of edge joint laser-electric arc of internal pressurization |
| CN109909583A (en) * | 2019-04-10 | 2019-06-21 | 郑州煤矿机械集团股份有限公司 | Multi-layer multi-pass welding method of the arc welding robot in hydraulic support welding |
| CN110293322A (en) * | 2019-07-01 | 2019-10-01 | 武汉金顿激光科技有限公司 | A kind of laser electrical arc complex welding method of martensitic precipitation |
| CN111702335A (en) * | 2020-06-05 | 2020-09-25 | 成都先进金属材料产业技术研究院有限公司 | Process method for welding 304 stainless steel plate |
| CN111702335B (en) * | 2020-06-05 | 2022-03-08 | 成都先进金属材料产业技术研究院股份有限公司 | Process method for welding 304 stainless steel plate |
| CN113210869A (en) * | 2021-04-25 | 2021-08-06 | 江苏通宇钢管集团有限公司 | Efficient titanium alloy laser-electric arc composite heat source pipeline welding process |
| CN113798677A (en) * | 2021-09-14 | 2021-12-17 | 江苏科技大学 | Welding method of duplex stainless steel and titanium alloy |
| CN113798677B (en) * | 2021-09-14 | 2024-02-27 | 江苏科技大学 | Welding method of duplex stainless steel and titanium alloy |
| CN116451045A (en) * | 2023-06-14 | 2023-07-18 | 苏芯物联技术(南京)有限公司 | Welding process steady-state current calculation method |
| CN116451045B (en) * | 2023-06-14 | 2023-08-22 | 苏芯物联技术(南京)有限公司 | Welding process steady-state current calculation method |
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