CN107971635B - A kind of cut deal angle joint light beam-welding wire dislocation laser-MAG compound welding method - Google Patents
A kind of cut deal angle joint light beam-welding wire dislocation laser-MAG compound welding method Download PDFInfo
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- CN107971635B CN107971635B CN201711195361.6A CN201711195361A CN107971635B CN 107971635 B CN107971635 B CN 107971635B CN 201711195361 A CN201711195361 A CN 201711195361A CN 107971635 B CN107971635 B CN 107971635B
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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
A kind of cut deal angle joint light beam-welding wire dislocation laser-MAG compound welding method, it is related to materials processing engineering field, the invention solves the welding bad adaptabilities that cut deal angle joint laser-MAG compound welding process occurs, surface weld is uneven, poor flatness, the non-penetration of back weld seam, forming is discontinuous, undercut, it is whole caused by heat input is excessive to stay, assembly precision and material preparation precision especially gap and misalignment welding quality influence very big, force built-up welding forming in the back riser side especially occurred under the conditions of assembly precision is not high, the problem of unfused formation in junction whole weld seam, the present invention is using the light beam under laser beam guidance-welding wire dislocation laser-MAG compound welding method, it carries out unilateral welding and obtains the weld seam of satisfactory primary through welding two-sides forming.Reduced using the groove after method welding of the invention, number of weld passes is reduced, and loading is reduced, and significantly improves efficiency, speed of welding reduces production cost.
Description
Technical field
The present invention relates to a kind of cut deal angle joint light beam-welding wire dislocation laser-MAG compound welding methods, belong to material
Process engineering field.
Background technique
With track train, steamer, the development of aerospace manufacturing field high speed, energy shortages and problem of environmental pollution
Increasingly sharpen, high intensity, lightweight, energy-saving and environmental protection and safety have become the certainty of current large-sized structural parts process industry development
Trend and requirement, therefore the welding procedure problem of cut deal structural member is always the heat of domestic and foreign scholars, large-scale manufacturing enterprise's research
Point.The usual material of cut deal angle joint is weathering steel, austenite and martensitic stain less steel, precipitation-hardening stainless steel, Langaloy
With titanium etc..6mm~20mm cut deal angle joint is mainly used for track train bogie, steamer and aerospace curb girder at present
The large-scale components such as box part, in order to meet its harsh use environment and performance indicator, cut deal angle joint backing welding needs reality
The welding process requirement of existing unilateral side welding, once through welding, two-sides forming and the filling number of plies few as far as possible.
According to pertinent literature and practical finding, the traditional welding method of this cut deal angle joint is the big groove of MAG
Multi-pass welding is commonly present following Welding Problems:
(1) MAG multi-pass welding, leads to that heat input is big, deformation is obvious due to plate thickness；
(2) MAG multi-pass welding, since groove is big, the filling number of plies is more, therefore workload of welding and polish is very big, weldering
Low efficiency is connect, welding surroundings are severe；
(3) using MAG weldering when, due to attraction of the arc electrode vulnerable to riser and groove under narrow and deep gap, under molten drop
It falls process and easily receives the sucking action of riser and groove, therefore cause the droplet transfer unstable, so that appearance of weld is poor, fill out
Charge is insufficient；
(4) postwelding is easy to appear the welding defects such as stomata, undercut and non-penetration
(5) cut deal angle joint MAG backing welding, which once welds, sufficiently add to transverse slat and two plate junction of riser
Heat, therefore make the non-melt-through of two plate of junction, it is connected between two plates only mainly by cold between molten metals in liquid state two plates of inflow
But the connector for solidifying and being formed causes the connection of two plates unreliable, and intensity is low；
(6) angle joint back appearance of weld is poor, and back reinforcement is also to squeeze under external force by molten metals in liquid state less
Amount cooled and solidified is formed, and undercut defect easily occurs in back weld seam, stress concentration point occurs, and backing welding is difficult to realize once penetrate double
Face forming.
Therefore the connector obtained under this welding method is unable to satisfy requirement, therefore urgently it is a kind of efficiently, stablize, can
The welding technique leaned on solves the problems, such as this.
Currently, laser-MAG compound welding technology be still research institution, various countries most extensive concern complex welding method it
One, laser-MAG compound welding technology can effectively utilize electric arc heat, and biggish fusion penetration is obtained under lesser laser power,
Preferable weld seam microstructure, higher technology stability, appearance of weld and joint performance easy to control can be obtained while cooling
The advantages that.In addition, laser-MAG compound welding technological synthesis laser and electric arc respective advantage, but compensate for it is respective not
Foot, and a variety of complex forms, laser-MAG Combined Welding can be formed according to different combinations of sources of heat, relative position, energy match
Weldquality is good, and depth-to-width ratio is big, and heat affected area is small, and welding deformation is small, and speed of welding is fast and easy to automate etc.
Advantage is widely used in the industrial production.
In practice during slab angle joint laser-MAG compound welding, since complex form is varied, how to protect
Card realizes that backing welding needs to realize unilateral welding, one in the case where weld seam group unevenly changes gap, welding position limits
It is secondary through welding, two-sides forming welding process requirement be the key technology of this technique.Meanwhile during actual welding, back weldering
Back riser side, which easily occurs, in seam forces forming, and penetration amount is less and the problems such as undercut occurs, and disadvantage mentioned above is unfavorable for such
The mechanical property and leakproofness of structural member.
Summary of the invention
The invention solves the welding bad adaptabilities of cut deal angle joint laser-MAG compound welding process appearance, surface weldering
Uneven, poor flatness is stitched, weld seam non-penetration in back shapes discontinuous, undercut, and it is whole caused by heat input is excessive to stay,
Assembly precision and material preparation precision especially gap and misalignment welding quality influence greatly, especially assembly precision not
The problem of built-up welding forming is forced in the back riser side that occurs under the conditions of height, unfused the is formationed entirety weld seam in junction, and propose
A kind of cut deal angle joint light beam-welding wire misplaces laser-MAG compound welding method.
A kind of cut deal angle joint light beam of the invention-welding wire misplaces laser-MAG compound welding method, it be according to
What lower step carried out:
Step 1: the position to be welded of workpiece is processed into single V-shaped groove, single u groove, list Y type groove or with root face
Single U-shaped groove, and to after processing single groove and both side surface, riser surface polished or cleaned, will polishing or cleaning
Workpiece to be welded afterwards is fixed on welding tool setup；
Step 2: laser head and MAG welding gun are fixed using fixture；
Step 3: during cut deal corner joint laser-arc hybrid welding in industry, taking laser, welding wire is posterior preceding
Composite welding mode makes laser beam and welding wire tip along being staggered perpendicular to bead direction and generate dislocation distance, welding wire tip
Corner joint group is always positioned to gap location, laser beam is located at transverse slat groove, to guarantee stringent shift to install；The mistake
Position distance is laser beam and welding wire tip along perpendicular to the relative displacement l in bead direction；
Step 4: setting technological parameter:
Backing welding: laser beam is 1~6mm, defocusing amount perpendicular to the relative displacement l in bead direction with welding wire tip edge
For ﹣ 3~﹢ 3mm, group is 0.5~3mm to gap, and laser head, welding gun and riser angle are 5 °~25 °, the folder of laser head and riser
Angle and the angle of welding gun and riser are same or different, and laser power is 2000~6000W, and arc current is 60~300A, swash
Photoelectric arc spacing is 2~6mm, and speed of welding is 0.3~1.8m/min, and protection gas uses Ar+5%CO2Gaseous mixture, flow 20
~50L/min；
Filling weldering: laser beam is 1~6mm, defocusing amount perpendicular to the relative displacement l in bead direction with welding wire tip edge
For ﹣ 3~﹢ 3mm, laser head, welding gun and riser angle are 5 °~25 °, the angle of laser head and riser and the folder of welding gun and riser
Angle is same or different, and laser power is 500~1500W, and arc current is 100~300A, and laser-arc spacing is 2~8mm,
Speed of welding is 0.3~1.5m/min, and protection gas uses Ar+5%CO2Gaseous mixture, flow are 20~40L/min；
Step 5: starting laser and MAG welding machine control set composite using robot integrated system, implement welding.
The present invention is directed to weld cut deal angle joint, using the light beam under laser beam guidance-welding wire dislocation laser-MAG
Complex welding method carries out unilateral welding and obtains the weld seam of satisfactory primary through welding two-sides forming, schematic diagram such as Fig. 1 institute
Show.
The present invention is welded compared to conventional arc, traditional non-dislocated formula laser-MAG compound welding mainly has the following excellent
Gesture:
1. having the advantage that the laser heat source due to using high-energy density compared to conventional arc weldering etc., reduce
Heat input, weld heat-affected zone is narrow, reduces residual deformation and residual stress；Groove reduces, and number of weld passes is reduced, and loading is reduced,
Efficiency is significantly improved, speed of welding reduces production cost；Compared to multi-pass welding, crystal grain obtains a degree of refinement,
It reduces material welding hot crack tendency and eliminates stomata, improve joint mechanical property and leakproofness；Most importantly, due to middle thickness
Plate angle connects weld process due to the presence of riser, generates the significant sucking action i.e. shadow of arc blow to the molten drop of whereabouts
It rings, which influences the fall trajectory of molten drop significant, transits directly to it on riser and forms built-up welding and non-formation weldering
Seam, and use under light beam-welding wire dislocation type compound welding technology, the introducing of laser can obviously weaken the effect of arc blow, under
The molten drop fallen plays the role of guidance, overcomes the sucking action of riser, makes it under the action of laser beam high-energy density heat source,
Transverse slat and two plate junction of riser can sufficiently be heated by welding cut deal angle joint backing welding once, therefore make junction
Two plate melt-throughs, after be frozen into reliable angle joint, and back appearance of weld is good, and no undercut, stress concentrate, non-penetration
The defects of, connection is reliable.Rather than transverse slat excessively melts the less fusing of riser in list MAG welding process, molten metal is in gravity etc.
It is expressed to back under external force and is formed by insecure connector.
2. being had the advantage that using light beam-welding wire dislocation due to laser compared to traditional laser-MAG compound welding
Beam is obvious for the guiding function effect of whereabouts molten drop, weakens riser significantly for the sucking action effect of molten drop, to increase
Big stable project transfer section, and then guarantee the stability of entire droplet transfer process, to realize process window more
Greatly, more stable project transfer section, and then obtained good appearance of weld；Practical application deposits gap due to group
, it can prevent laser beam from acting on gap using light beam-welding wire dislocation, it is strong so as to cause the riser in the case where laser beam guides strongly
The generation of forming defects processed can not then be formed once generating riser forces forming phenomenon with the weld seam being reliably connected；Due to adopting
With the mode of dislocation, the efficient coupling zone of action between laser and electric arc is increased, to improve cut deal angle joint
Weld adaptability, available reliable connector there are biggish gap；Since conventional laser-MAG composite welding is same
The mode of face arrangement, welding gun are often fixed with laser head, and entire composite welding apparatus flexibility is lower, using dislocation mode, laser
The limit moving displacement and angle of head and welding gun increase, and more relative position arrangements, welding effective district may be implemented
Domain becomes larger；Under dislocation mode, the whole penetration of angle joint transverse slat Yu riser connecting portion is improved, connector connection is more reliable,
Back appearance of weld is more attractive, and filling is full, improves the mechanical property of connector.
Detailed description of the invention
Fig. 1 is light beam of the invention-welding wire dislocation welding schematic diagram；
Fig. 2 is laser-electric arc relative position partial schematic diagram；
Fig. 3 is weld seam full face when 1 method of embodiment welds 12mm thickness S355 weathering steel corner joint；
Fig. 4 is seam cross-section pattern photo when 1 method of embodiment welds 12mm thickness S355 weathering steel corner joint；
Fig. 5 is droplet transfer when 1 method of embodiment welds 12mm thickness S355 weathering steel corner joint under MAG weldering
Period photo；Wherein, a is the photo of t=0ms；B is the photo of t=1.4ms；C is the photo of t=2.6ms；D is t=4.0ms
Photo；
Fig. 6 is weld seam front and back sides pattern photo when 2 method of embodiment welds 12mm thickness S355 weathering steel corner joint；
Fig. 7 is when welding 12mm thickness S355 weathering steel corner joint for 2 method of embodiment under coplanar arrangement P=4500W
One period droplet transfer photo；Wherein, a is the photo of t=0ms；B is the photo of t=0.8ms；C is the photograph of t=2.8ms
Piece；D is the photo of t=5.0ms；
Fig. 8 is face of weld pattern and transversal when 3 method of embodiment welds 12mm thickness S355 weathering steel corner joint
Face pattern photo；
Fig. 9 is one under dislocation P=4500W when 3 method of embodiment welds 12mm thickness S355 weathering steel corner joint
Period droplet transfer photo；Wherein, a is the photo of t=0ms；B is the photo of t=2.8ms；C is the photo of t=3.6ms；D is
The photo of t=6.8ms；
Figure 10 is that weld seam front pattern shines when 4 method of embodiment carries out backing welding to 12mm thickness S355 weathering steel corner joint
Piece；
Figure 11 is that weld seam front pattern shines when 5 method of embodiment carries out backing welding to 12mm thickness S355 weathering steel corner joint
Piece；
Figure 12 is that weld seam front pattern shines when 6 method of embodiment carries out backing welding to 12mm thickness S355 weathering steel corner joint
Piece；
Figure 13 is that weld seam front pattern shines when 7 method of embodiment carries out backing welding to 12mm thickness S355 weathering steel corner joint
Piece.
Specific embodiment
Specific embodiment 1: being swashed using laser beam-welding wire dislocation laser-MAG compound welding cut deal corner joint
Light device can use CO2Gas laser, YAG solid state laser, semiconductor laser, optical fiber laser etc., wherein to use
Optical fiber transmission YAG solid state laser, semiconductor laser or optical fiber laser welding effect it is best because its it is more flexible and
Efficiently.MAG uses Fronius TPS4000 type MAG arc welder, and by optical-fiber laser-MAG composite welding head and Kuka machine
People assembles and connects.
Step 1: the position to be welded (transverse slat in corner joint) of workpiece is processed into single V-shaped groove, list as needed
U groove, list Y type groove or with the U-shaped groove of root face list, and to after processing single groove and both side surface, riser surface into
Row polishing or cleaning, the workpiece to be welded after polishing or cleaning is fixed on welding tool setup；
Step 2: being fixed laser head and MAG welding gun using special fixture, due to using complex method, need to guarantee laser
The flexible modulation of head rotation angle with welding gun relative position and respectively；
Step 3: during cut deal corner joint laser-arc hybrid welding in industry, taking laser, welding wire is posterior preceding
Composite welding mode can be penetrated into molten bath to guarantee welding wire in the welding process, guarantee the droplet transfer in welding process
Stability, and guarantee the whole penetration of two plate junction of corner joint, laser beam along the inswept plane of moving direction with
Welding wire cannot be excessive with vertical plate institute angulation along inswept two plane of plane of moving direction.Dislocation requires welding wire tip to be always positioned at
Corner joint group is to gap location, and laser beam acts at transverse slat groove, there are certain space length between the two plane, two
Space length L between plane is characterized by laser beam and welding wire tip edge perpendicular to the relative displacement l in bead direction, and
And the space length between antarafacial is directly related with size of the group of connector to gap, plate thickness, group is bigger to gap, and plate thickness is got over
Greatly, L is bigger.
Step 4: setting technological parameter is adjusted according to the thickness of material to be processed and practical tooling situation:
Backing welding: laser beam is 1~5mm, defocusing amount perpendicular to the relative displacement l in bead direction with welding wire tip edge
For ﹣ 3~﹢ 3mm, group is 0.5~3mm to gap, and laser head, welding gun and riser angle are 5 °~25 °, the folder of laser head and riser
Angle and the angle of welding gun and riser are same or different, and laser power is 2000~6000W, and arc current is 60~300A, swash
Photoelectric arc spacing is 2~6mm, and speed of welding is 0.3~1.8m/min, and protection gas uses Ar+5%CO2Gaseous mixture, flow 20
~50L/min；
Filling weldering: laser beam is 1~6mm, defocusing amount perpendicular to the relative displacement l in bead direction with welding wire tip edge
For ﹣ 3~﹢ 3mm, laser head, welding gun and riser angle are 5 °~25 °, the angle of laser head and riser and the folder of welding gun and riser
Angle is same or different, and laser power is 500~1500W, and arc current is 100~300A, and laser-arc spacing is 2~8mm,
Speed of welding is 0.3~1.5m/min, and protection gas uses Ar+5%CO2Gaseous mixture, flow are 20~40L/min；
Above-mentioned parameter, once it is determined that, it is remained unchanged in welding process.
Step 5: starting laser and MAG welding machine control set composite using robot integrated system, implement welding.
It is deformed due to heated during long cut deal fillet weld seam, it can be by solid point technique suitable before welding to rising
Arc end and receipts arc end are fixed.
Specific embodiment 2: the present embodiment is different from the first embodiment in that: laser CO2Gas laser
Device, YAG solid state laser, semiconductor laser or optical fiber laser.It is other same as the specific embodiment one.
Specific embodiment 3: the present embodiment is different from the first embodiment in that: laser beam and welding wire tip exist
Refer to laser beam along the inswept plane of moving direction and welding wire along inswept flat of moving direction along being staggered perpendicular to bead direction
Face is staggered along perpendicular to bead direction.It is other same as the specific embodiment one.
Specific embodiment 4: the present embodiment is different from the first embodiment in that: laser beam and welding wire tip exist
Along the dislocation distance that 1~6mm is staggered and generated perpendicular to bead direction.It is other same as the specific embodiment one.
Specific embodiment 5: the present embodiment is different from the first embodiment in that: laser beam and welding wire tip exist
Along the dislocation distance that 1~3mm is staggered and generated perpendicular to bead direction.It is other same as the specific embodiment one.
Specific embodiment 6: the present embodiment is different from the first embodiment in that: setting technological parameter:
Backing welding: laser beam is 1~3mm, defocusing amount perpendicular to the relative displacement l in bead direction with welding wire tip edge
For ﹣ 3~﹢ 2mm, group is 0.5~2mm to gap, and laser head, welding gun and riser angle are 5 °~20 °, the folder of laser head and riser
Angle and the angle of welding gun and riser are same or different, and laser power is 3000~6000W, and arc current is 100~300A, swash
Photoelectric arc spacing is 2~5mm, and speed of welding is 0.5~1.8m/min, and protection gas uses Ar+5%CO2Gaseous mixture, flow 20
~40L/min；
Filling weldering: laser beam is 1~2mm, defocusing amount perpendicular to the relative displacement l in bead direction with welding wire tip edge
For ﹣ 2~﹢ 2mm, laser head, welding gun and riser angle are 5 °~20 °, the angle of laser head and riser and the folder of welding gun and riser
Angle is same or different, and laser power is 500~1200W, and arc current is 150~250A, and laser-arc spacing is 2~6mm,
Speed of welding is 0.3~1.0m/min, and protection gas uses Ar+5%CO2Gaseous mixture, flow are 20~30L/min.
It is other same as the specific embodiment one.
Specific embodiment 7: the present embodiment is different from the first embodiment in that: setting technological parameter:
Backing welding: laser beam is 1~3mm, defocusing amount perpendicular to the relative displacement l in bead direction with welding wire tip edge
For ﹣ 2~﹢ 2mm, group is 1~2mm to gap, and laser head, welding gun and riser angle are 10 °~20 °, the folder of laser head and riser
Angle and the angle of welding gun and riser are same or different, and laser power is 3000~5000W, and arc current is 100~200A, swash
Photoelectric arc spacing is 3~5mm, and speed of welding is 0.5~1.5m/min, and protection gas uses Ar+5%CO2Gaseous mixture, flow 20
~30L/min；
Filling weldering: laser beam is 1~2mm, defocusing amount perpendicular to the relative displacement l in bead direction with welding wire tip edge
For ﹣ 1~﹢ 2mm, laser head, welding gun and riser angle are 10 °~20 °, the angle of laser head and riser and the folder of welding gun and riser
Angle is same or different, and laser power is 500~1000W, and arc current is 150~200A, and laser-arc spacing is 2~5mm,
Speed of welding is 0.3~0.8m/min, and protection gas uses Ar+5%CO2Gaseous mixture, flow are 20~30L/min.
It is other same as the specific embodiment one.
Specific embodiment 8: the present embodiment is different from the first embodiment in that: setting technological parameter:
Backing welding: laser beam is 1~3mm, defocusing amount perpendicular to the relative displacement l in bead direction with welding wire tip edge
For ﹣ 1~﹢ 1mm, group is 1~2mm to gap, and laser head, welding gun and riser angle are 10 °~15 °, the folder of laser head and riser
Angle and the angle of welding gun and riser are same or different, and laser power is 4000~5000W, and arc current is 100~170A, swash
Photoelectric arc spacing is 4~5mm, and speed of welding is 0.5~1.2m/min, and protection gas uses Ar+5%CO2Gaseous mixture, flow 20
~30L/min；
Filling weldering: laser beam is 1~2mm, defocusing amount perpendicular to the relative displacement l in bead direction with welding wire tip edge
For ﹣ 1~﹢ 1mm, laser head, welding gun and riser angle are 15 °~20 °, the angle of laser head and riser and the folder of welding gun and riser
Angle is same or different, and laser power is 500~800W, and arc current is 150~190A, and laser-arc spacing is 3~5mm,
Speed of welding is 0.3~0.5m/min, and protection gas uses Ar+5%CO2Gaseous mixture, flow are 20~30L/min.
It is other same as the specific embodiment one.
Specific embodiment 9: the present embodiment is different from the first embodiment in that: setting technological parameter:
Backing welding: laser beam is 3mm, defocusing amount ﹣ perpendicular to the relative displacement l in bead direction with welding wire tip edge
1mm, group are 1mm to gap, and laser head, welding gun and riser angle are 10 °, the angle of laser head and riser and welding gun and riser
Angle is same or different, laser power 4500W, and arc current is 100~170A, and laser-arc spacing is 4mm, welding speed
Degree is 1.0m/min, and protection gas uses Ar+5%CO2Gaseous mixture, flow 25L/min；
Filling weldering: laser beam is 2mm, defocusing amount ﹢ perpendicular to the relative displacement l in bead direction with welding wire tip edge
1mm, laser head, welding gun and riser angle are 10 °, and the angle and welding gun of laser head and riser are identical as the angle of riser or not
Together, laser power 800W, arc current are 150~190A, and laser-arc spacing is 4mm, speed of welding 0.5m/min, are protected
It protects gas and uses Ar+5%CO2Gaseous mixture, flow 25L/min.
It is other same as the specific embodiment one.
Specific embodiment 10: the present embodiment is different from the first embodiment in that: setting technological parameter:
Backing welding: laser beam is 3mm, defocusing amount ﹣ perpendicular to the relative displacement l in bead direction with welding wire tip edge
1mm, group are 1mm to gap, and laser head, welding gun and riser angle are 10 °, the angle of laser head and riser and welding gun and riser
Angle is same or different, laser power 4500W, and arc current is 150~170A, and laser-arc spacing is 4mm, welding speed
Degree is 1.0m/min, and protection gas uses Ar+5%CO2Gaseous mixture, flow 25L/min；
Filling weldering: laser beam is 2mm, defocusing amount ﹢ perpendicular to the relative displacement l in bead direction with welding wire tip edge
1mm, laser head, welding gun and riser angle are 10 °, and the angle and welding gun of laser head and riser are identical as the angle of riser or not
Together, laser power 800W, arc current are 170~190A, and laser-arc spacing is 4mm, speed of welding 0.5m/min, are protected
It protects gas and uses Ar+5%CO2Gaseous mixture, flow 25L/min.
It is other same as the specific embodiment one.
The content of present invention is not limited only to the content of the respective embodiments described above, the group of one of them or several specific embodiments
The purpose of invention also may be implemented in contract sample.
It is verified by following embodiment of the invention effective:
Be respectively adopted conventional MAG weldering, laser-MAG Combined Welding, dislocation type laser-MAG Combined Welding welding 12mm thickness S355 it is resistance to
Wait steel corner joint.Specific implementation method is as follows:
Embodiment 1
12mm thickness S355 weathering steel corner joint is welded using MAG:
Step 1: being processed into single Y type groove for the position to be welded (transverse slat in corner joint) of workpiece as needed, blunt
While with a thickness of 6mm, 45 ° of bevel angle, and to after processing single groove and both side surface, riser surface carry out polishing or clear
It washes, the workpiece to be welded after polishing or cleaning is fixed on welding tool setup；
Step 2: MAG welding gun is fixed using special fixture, need to guarantee the flexible modulation of torch rotation angle degree.
Step 3: setting technological parameter is adjusted according to the thickness of material to be processed and practical tooling situation:
Backing welding: group to gap 1mm, welding gun with 10 ° of riser angle, arc current exists in 180A or so, speed of welding
1.0m/min.Gas is protected to use Ar+5%CO2Gaseous mixture, flow is in 25L/min.
Above-mentioned parameter, once it is determined that, it is remained unchanged in welding process.
Step 5: starting MAG welding machine controls set composite using robot integrated system, implements welding.
Fig. 4 be use tradition MAG weldering carry out 12mm thickness S355 weathering steel corner joint welding when weld seam front forming with
And cross-sectional morphology, it can be seen that weld seam completely can not penetration, and filling of groove front is poor, illustrates that simple MAG weldering does not adapt to
This faster speed of welding.
Fig. 5 is that the droplet transfer high-speed camera welded when carrying out the welding of 12mm thickness S355 weathering steel corner joint using MAG is clapped
Picture is taken the photograph, the droplet transfer is unstable, molten drop sucking action strong by riser when falling, it can be seen that molten drop directly falls in perpendicular
Molten bath is formed on plate.
Embodiment 2
Traditional non-dislocated formula laser-MAG Combined Welding welds 12mm thickness S355 weathering steel corner joint:
Step 1: being processed into single Y type groove for the position to be welded (transverse slat in corner joint) of workpiece as needed, blunt
While with a thickness of 6mm, 45 ° of bevel angle, and to after processing single groove and both side surface, riser surface carry out polishing or clear
It washes, the workpiece to be welded after polishing or cleaning is fixed on welding tool setup；
Step 2: being fixed laser head and MAG welding gun using special fixture, due to using complex method, need to guarantee laser
The flexible modulation of head rotation angle with welding gun relative position and respectively.
Step 3: setting technological parameter is adjusted according to the thickness of material to be processed and practical tooling situation:
Backing welding: defocusing amount is in -1mm, and group is to gap 1mm, laser head, welding gun and 10 ° of riser angle, laser power
4500W, arc current is in 170A or so, and laser-arc spacing 3mm, speed of welding is in 1.0m/min.Gas is protected to use Ar+5%
CO2Gaseous mixture, flow is in 25L/min.
Above-mentioned parameter, once it is determined that, it is remained unchanged in welding process.
Step 5: starting laser and MAG welding machine control set composite using robot integrated system, implement welding.
Fig. 6 is when carrying out the welding of 12mm thickness S355 weathering steel corner joint using traditional non-dislocated formula laser-MAG Combined Welding
Face of weld pattern and back defect pattern.We can be found that connector does not form continuous weld seam, two plate junctions
Not formed to be reliably connected without entirety penetration, riser back forms the pressure forming defects under laser aiming, is not able to satisfy technique
Performance requirement.
Fig. 7 is when carrying out the welding of 12mm thickness S355 weathering steel corner joint using traditional non-dislocated formula laser-MAG Combined Welding
Droplet transfer high-speed camera shoot picture, the droplet transfer is unstable, still strong by riser sucking action when molten drop falls,
Stable molten bath can not be formed, illustrates that its droplet transfer behavior that do not have clear improvement is added in laser.
Embodiment 3
This method welds 12mm thickness S355 weathering steel corner joint (three layer of three weldering):
Step 1: being processed into single Y type groove for the position to be welded (transverse slat in corner joint) of workpiece as needed, blunt
While with a thickness of 6mm, 45 ° of bevel angle, and to after processing single groove and both side surface, riser surface carry out polishing or clear
It washes, the workpiece to be welded after polishing or cleaning is fixed on welding tool setup；
Step 2: being fixed laser head and MAG welding gun using special fixture, due to using complex method, need to guarantee laser
The flexible modulation of head rotation angle with welding gun relative position and respectively.
Step 3: during cut deal corner joint laser-arc hybrid welding in industry, taking laser, welding wire is posterior preceding
Composite welding mode can be penetrated into molten bath to guarantee welding wire in the welding process, guarantee the droplet transfer in welding process
Stability, and guarantee the whole penetration of two plate junction of corner joint, laser beam along the inswept plane of moving direction with
Welding wire cannot be excessive with vertical plate institute angulation along inswept two plane of plane of moving direction.Dislocation requires welding wire tip to be always positioned at
Corner joint group is to gap location, and laser beam acts at transverse slat groove, there are certain space length between the two plane, two
Space length L between plane is characterized by laser beam and welding wire tip edge perpendicular to the relative displacement l in bead direction, and
And the space length between antarafacial is directly related with size of the group of connector to gap, plate thickness, group is bigger to gap, and plate thickness is got over
Greatly, L is bigger.
Step 4: setting technological parameter is adjusted according to the thickness of material to be processed and practical tooling situation:
Backing welding: laser beam and welding wire tip are along perpendicular to relative displacement l, that is, antarafacial space length in bead direction
2mm, defocusing amount in -1mm, group to gap 1mm, laser head with 10 ° of riser angle, welding gun with 15 ° of riser angle, laser power
4500W, arc current is in 170A, and laser-arc spacing 3mm, speed of welding is in 1.0m/min；Gas is protected to use Ar+5%CO2It is mixed
Gas is closed, flow is in 25L/min.
Filling weldering: laser beam and welding wire tip are along perpendicular to relative displacement l, that is, antarafacial space length in bead direction
2mm, defocusing amount is in+1mm, and laser head, welding gun and 10 ° of riser angle, laser power 800W, arc current is in 200A, laser electricity
Arc spacing 4mm, speed of welding is in 0.5m/min；Gas is protected to use Ar+5%CO2Gaseous mixture, flow is in 25L/min.
Above-mentioned parameter, once it is determined that, it is remained unchanged in welding process.
Step 5: starting laser and MAG welding machine control set composite using robot integrated system, implement welding.
Fig. 8 is face of weld pattern when carrying out the welding of 12mm thickness S355 weathering steel corner joint using the present embodiment method
And cross-sectional morphology, it can be seen that when being welded using this method, welding process is stablized, the smooth beauty of appearance of weld
It sees, uniformity, without apparent bad defect, realizes the welding process requirement of unilateral welding two-sides forming, back even weld
Continuously.
Fig. 9 is droplet transfer high speed when carrying out the welding of 12mm thickness S355 weathering steel corner joint using the present embodiment method
Photography picture, it can be seen that laser forms keyhole on base material, and electric arc is significantly attracted near keyhole, and molten drop is in
Reveal apparent project transfer phenomenon, the strong guiding function of laser makes the sucking action which overcome riser to it, and with sharp
The increasing of optical power, under high-speed camera, keyhole becomes more to become clear and keyhole area increases.
Above embodiments 3 are the experiment using method of the present invention welding 12mm thickness S355 weathering steel corner joint
Journey and correlated results, Examples 1 and 2 are the process and phase using existing method welding 12mm thickness S355 weathering steel corner joint
Close result.
Comparative analysis through the foregoing embodiment is imitated it is found that after the method welding of embodiment 3 in seam center and welding
Apparent effect is played in terms of fruit.The surface weld for solving the appearance of cut deal angle joint laser-MAG compound welding process is recessed
Convex uneven, poor flatness, the non-penetration of back weld seam, forming be discontinuous, undercut, caused by heat input is excessive it is whole stay and
Built-up welding forming is forced in the back riser side occurred under the conditions of assembly precision is not high, and junction is unfused to form asking for whole weld seam
Topic.And Examples 1 and 2 do not solve the above problems.
Conventional laser-MAG Combined Welding, dislocation type laser-MAG Combined Welding welding 12mm thickness S355 weathering steel angle is respectively adopted
Connector backing welding increases its group to gap, verifies advantage of this method in the adaptability of gap.Specific implementation method is as follows:
Embodiment 4
This method welds 12mm thickness S355 weathering steel corner joint (three layer of three weldering):
Step 1: being processed into single Y type groove for the position to be welded (transverse slat in corner joint) of workpiece as needed, blunt
While with a thickness of 6mm, 45 ° of bevel angle, and to after processing single groove and both side surface, riser surface carry out polishing or clear
It washes, the workpiece to be welded after polishing or cleaning is fixed on welding tool setup；
Step 2: being fixed laser head and MAG welding gun using special fixture, due to using complex method, need to guarantee laser
The flexible modulation of head rotation angle with welding gun relative position and respectively.
Step 3: during cut deal corner joint laser-arc hybrid welding in industry, taking laser, welding wire is posterior preceding
Composite welding mode can be penetrated into molten bath to guarantee welding wire in the welding process, guarantee the droplet transfer in welding process
Stability, and guarantee the whole penetration of two plate junction of corner joint, laser beam along the inswept plane of moving direction with
Welding wire cannot be excessive with vertical plate institute angulation along inswept two plane of plane of moving direction.Dislocation requires welding wire tip to be always positioned at
Corner joint group is to gap location, and laser beam acts at transverse slat groove, there are certain space length between the two plane, two
Space length L between plane is characterized by laser beam and welding wire tip edge perpendicular to the relative displacement l in bead direction, and
And the space length between antarafacial is directly related with size of the group of connector to gap, plate thickness, group is bigger to gap, and plate thickness is got over
Greatly, L is bigger.
Step 4: setting technological parameter is adjusted according to the thickness of material to be processed and practical tooling situation:
Backing welding: laser beam and welding wire tip are along perpendicular to relative displacement l, that is, antarafacial space length in bead direction
3mm, defocusing amount is in -1mm, and group is to gap 2mm, laser head, welding gun and 15 ° of riser angle, laser power 4000W, arc current
In 150A, laser-arc spacing 2mm, speed of welding is in 0.8m/min；Gas is protected to use Ar+5%CO2Gaseous mixture, flow exist
25L/min。
Above-mentioned parameter, once it is determined that, it is remained unchanged in welding process.
Step 5: starting laser and MAG welding machine control set composite using robot integrated system, implement welding.
Figure 10 is weld seam front when carrying out 12mm thickness S355 weathering steel corner joint backing welding using the present embodiment method
Pattern, it can be seen that when being welded using this method, weld seam is continuously beautiful, non-nuclear density gauge.
Embodiment 5
12mm thickness S355 weathering steel corner joint is welded using conventional laser-MAG Combined Welding.Specific implementation method is as follows:
Step 1: being processed into single Y type groove for the position to be welded (transverse slat in corner joint) of workpiece as needed, blunt
While with a thickness of 6mm, 45 ° of bevel angle, and to after processing single groove and both side surface, riser surface carry out polishing or clear
It washes, the workpiece to be welded after polishing or cleaning is fixed on welding tool setup；
Step 2: being fixed laser head and MAG welding gun using special fixture, due to using complex method, need to guarantee laser
The flexible modulation of head rotation angle with welding gun relative position and respectively.
Step 3: setting technological parameter is adjusted according to the thickness of material to be processed and practical tooling situation:
Backing welding: defocusing amount is in -1mm, and group is to gap 2mm, laser head, welding gun and 15 ° of riser angle, laser power
4000W, arc current is in 150A, and laser-arc spacing 2mm, speed of welding is in 0.8m/min；Gas is protected to use Ar+5%CO2It is mixed
Gas is closed, flow is in 25L/min.
Above-mentioned parameter, once it is determined that, it is remained unchanged in welding process.
Step 5: starting laser and MAG welding machine control set composite using robot integrated system, implement welding.
Figure 11 is weld seam front when carrying out 12mm thickness S355 weathering steel corner joint backing welding using the present embodiment method
Pattern, it can be seen that when being welded using this method, laser energy is passed through from gap and is largely lost, since laser draws
It is weaker to lead effect, electric arc is biased to riser side, is attracted strongly, appearance of weld is poor.
Embodiment 6
This method welds 12mm thickness S355 weathering steel corner joint (three layer of three weldering):
Step 1: being processed into single Y type groove for the position to be welded (transverse slat in corner joint) of workpiece as needed, blunt
While with a thickness of 6mm, 45 ° of bevel angle, and to after processing single groove and both side surface, riser surface carry out polishing or clear
It washes, the workpiece to be welded after polishing or cleaning is fixed on welding tool setup；
Step 2: being fixed laser head and MAG welding gun using special fixture, due to using complex method, need to guarantee laser
The flexible modulation of head rotation angle with welding gun relative position and respectively.
Step 3: during cut deal corner joint laser-arc hybrid welding in industry, taking laser, welding wire is posterior preceding
Composite welding mode can be penetrated into molten bath to guarantee welding wire in the welding process, guarantee the droplet transfer in welding process
Stability, and guarantee the whole penetration of two plate junction of corner joint, laser beam along the inswept plane of moving direction with
Welding wire cannot be excessive with vertical plate institute angulation along inswept two plane of plane of moving direction.Dislocation requires welding wire tip to be always positioned at
Corner joint group is to gap location, and laser beam acts at transverse slat groove, there are certain space length between the two plane, two
Space length L between plane is characterized by laser beam and welding wire tip edge perpendicular to the relative displacement l in bead direction, and
And the space length between antarafacial is directly related with size of the group of connector to gap, plate thickness, group is bigger to gap, and plate thickness is got over
Greatly, L is bigger.
Step 4: setting technological parameter is adjusted according to the thickness of material to be processed and practical tooling situation:
Backing welding: laser beam and welding wire tip are along perpendicular to relative displacement l, that is, antarafacial space length in bead direction
4mm, defocusing amount is in -1mm, and group is to gap 3mm, laser head and 20 ° of riser angle, welding gun and 10 ° of riser angle, laser power
4000W, arc current is in 170A, and laser-arc spacing 2mm, speed of welding is in 0.8m/min；Gas is protected to use Ar+5%CO2It is mixed
Gas is closed, flow is in 25L/min.
Above-mentioned parameter, once it is determined that, it is remained unchanged in welding process.
Step 5: starting laser and MAG welding machine control set composite using robot integrated system, implement welding.
Figure 12 is weld seam front when carrying out 12mm thickness S355 weathering steel corner joint backing welding using the present embodiment method
Pattern, it can be seen that even if group is welded still available continuous, forming well using this method to when gap is 3mm
Weld seam.
Embodiment 7
12mm thickness S355 weathering steel corner joint is welded using conventional laser-MAG Combined Welding.Specific implementation method is as follows:
Step 1: being processed into single Y type groove for the position to be welded (transverse slat in corner joint) of workpiece as needed, blunt
While with a thickness of 6mm, 45 ° of bevel angle, and to after processing single groove and both side surface, riser surface carry out polishing or clear
It washes, the workpiece to be welded after polishing or cleaning is fixed on welding tool setup；
Step 2: being fixed laser head and MAG welding gun using special fixture, due to using complex method, need to guarantee laser
The flexible modulation of head rotation angle with welding gun relative position and respectively.
Step 3: setting technological parameter is adjusted according to the thickness of material to be processed and practical tooling situation:
Backing welding: defocusing amount is in -1mm, and group is to gap 3mm, laser head, welding gun and 15 ° of riser angle, laser power
4000W, arc current is in 170A, and laser-arc spacing 2mm, speed of welding is in 0.8m/min；Gas is protected to use Ar+5%CO2It is mixed
Gas is closed, flow is in 25L/min.
Above-mentioned parameter, once it is determined that, it is remained unchanged in welding process.
Step 5: starting laser and MAG welding machine control set composite using robot integrated system, implement welding.
Figure 13 is weld seam front when carrying out 12mm thickness S355 weathering steel corner joint backing welding using the present embodiment method
Pattern, it can be seen that when being welded using this method, since gap is excessive, laser energy is passed through from gap and largely damaged
Consumption, since laser aiming effect is weaker, electric arc is biased to riser side, is attracted strongly, and there is no fusions well for groove two sides
Together, effective welding point can not be formed.
Claims (10)
1. a kind of cut deal angle joint light beam-welding wire misplaces laser-MAG compound welding method, it is characterised in that it be according to
What lower step carried out:
Step 1: by the position to be welded of workpiece be processed into single V-shaped groove, single u groove, list Y type groove or with root face list it is U-shaped
Groove, and to after processing single groove and both side surface, riser surface polished or cleaned, by after polishing or cleaning to
Welder's part is fixed on welding tool setup；
Step 2: laser head and MAG welding gun are fixed using fixture；
Step 3: during cut deal corner joint laser-arc hybrid welding in industry, taking laser, welding wire is posterior compound preceding
Bond pattern makes laser beam and welding wire tip along being staggered perpendicular to bead direction and generating dislocation distance, and welding wire tip is always
Positioned at corner joint group to gap location, laser beam is located at transverse slat groove, to guarantee stringent shift to install；The dislocation away from
From being laser beam and welding wire tip along perpendicular to the relative displacement l in bead direction；
Step 4: setting technological parameter:
Backing welding: laser beam and welding wire tip along being 1~6mm perpendicular to the relative displacement l in bead direction, defocusing amount be ﹣ 3~
﹢ 3mm, group are 0.5~3mm to gap, and laser head, welding gun and riser angle are 5 °~25 °, the angle and weldering of laser head and riser
The angle of rifle and riser is same or different, and laser power is 2000~6000W, and arc current is 60~300A, laser-arc
Spacing is 2~6mm, and speed of welding is 0.3~1.8m/min, and protection gas uses Ar+5%CO2Gaseous mixture, flow are 20~50L/
min；
Filling weldering: laser beam and welding wire tip along being 1~6mm perpendicular to the relative displacement l in bead direction, defocusing amount be ﹣ 3~
﹢ 3mm, laser head, welding gun and riser angle are 5 °~25 °, and the angle and welding gun of laser head and riser are identical as the angle of riser
Or it is different, laser power is 500~1500W, and arc current is 100~300A, and laser-arc spacing is 2~8mm, welding speed
Degree is 0.3~1.5m/min, and protection gas uses Ar+5%CO2Gaseous mixture, flow are 20~40L/min；
Step 5: starting laser and MAG welding machine control set composite using robot integrated system, implement welding.
The laser-MAG compound welding method 2. a kind of cut deal angle joint light beam according to claim 1-welding wire misplaces,
It is characterized in that laser is CO2Gas laser, YAG solid state laser, semiconductor laser or optical fiber laser.
The laser-MAG compound welding method 3. a kind of cut deal angle joint light beam according to claim 1-welding wire misplaces,
It is characterized in that laser beam and welding wire tip are referring to laser beam along inswept flat of moving direction along being staggered perpendicular to bead direction
Face and welding wire are staggered along the inswept plane of moving direction along perpendicular to bead direction.
The laser-MAG compound welding method 4. a kind of cut deal angle joint light beam according to claim 1-welding wire misplaces,
It is characterized in that laser beam and welding wire tip along the dislocation distance that 1~6mm is staggered and generated perpendicular to bead direction.
The laser-MAG compound welding method 5. a kind of cut deal angle joint light beam according to claim 4-welding wire misplaces,
It is characterized in that laser beam and welding wire tip along the dislocation distance that 1~3mm is staggered and generated perpendicular to bead direction.
The laser-MAG compound welding method 6. a kind of cut deal angle joint light beam according to claim 1-welding wire misplaces,
It is characterized in that setting technological parameter:
Backing welding: laser beam and welding wire tip along being 1~3mm perpendicular to the relative displacement l in bead direction, defocusing amount be ﹣ 3~
﹢ 2mm, group are 0.5~2mm to gap, and laser head, welding gun and riser angle are 5 °~20 °, the angle and weldering of laser head and riser
The angle of rifle and riser is same or different, and laser power is 3000~6000W, and arc current is 100~300A, laser-arc
Spacing is 2~5mm, and speed of welding is 0.5~1.8m/min, and protection gas uses Ar+5%CO2Gaseous mixture, flow are 20~40L/
min；
Filling weldering: laser beam and welding wire tip along being 1~2mm perpendicular to the relative displacement l in bead direction, defocusing amount be ﹣ 2~
﹢ 2mm, laser head, welding gun and riser angle are 5 °~20 °, and the angle and welding gun of laser head and riser are identical as the angle of riser
Or it is different, laser power is 500~1200W, and arc current is 150~250A, and laser-arc spacing is 2~6mm, welding speed
Degree is 0.3~1.0m/min, and protection gas uses Ar+5%CO2Gaseous mixture, flow are 20~30L/min.
The laser-MAG compound welding method 7. a kind of cut deal angle joint light beam according to claim 6-welding wire misplaces,
It is characterized in that setting technological parameter:
Backing welding: laser beam and welding wire tip along being 1~3mm perpendicular to the relative displacement l in bead direction, defocusing amount be ﹣ 2~
﹢ 2mm, group are 1~2mm to gap, and laser head, welding gun and riser angle are 10 °~20 °, the angle and weldering of laser head and riser
The angle of rifle and riser is same or different, and laser power is 3000~5000W, and arc current is 100~200A, laser-arc
Spacing is 3~5mm, and speed of welding is 0.5~1.5m/min, and protection gas uses Ar+5%CO2Gaseous mixture, flow are 20~30L/
min；
Filling weldering: laser beam and welding wire tip along being 1~2mm perpendicular to the relative displacement l in bead direction, defocusing amount be ﹣ 1~
﹢ 2mm, laser head, welding gun and riser angle are 10 °~20 °, and the angle and welding gun of laser head and riser are identical as the angle of riser
Or it is different, laser power is 500~1000W, and arc current is 150~200A, and laser-arc spacing is 2~5mm, welding speed
Degree is 0.3~0.8m/min, and protection gas uses Ar+5%CO2Gaseous mixture, flow are 20~30L/min.
The laser-MAG compound welding method 8. a kind of cut deal angle joint light beam according to claim 7-welding wire misplaces,
It is characterized in that setting technological parameter:
Backing welding: laser beam and welding wire tip along being 1~3mm perpendicular to the relative displacement l in bead direction, defocusing amount be ﹣ 1~
﹢ 1mm, group are 1~2mm to gap, and laser head, welding gun and riser angle are 10 °~15 °, the angle and weldering of laser head and riser
The angle of rifle and riser is same or different, and laser power is 4000~5000W, and arc current is 100~170A, laser-arc
Spacing is 4~5mm, and speed of welding is 0.5~1.2m/min, and protection gas uses Ar+5%CO2Gaseous mixture, flow are 20~30L/
min；
Filling weldering: laser beam and welding wire tip along being 1~2mm perpendicular to the relative displacement l in bead direction, defocusing amount be ﹣ 1~
﹢ 1mm, laser head, welding gun and riser angle are 15 °~20 °, and the angle and welding gun of laser head and riser are identical as the angle of riser
Or it is different, laser power is 500~800W, and arc current is 150~190A, and laser-arc spacing is 3~5mm, welding speed
Degree is 0.3~0.5m/min, and protection gas uses Ar+5%CO2Gaseous mixture, flow are 20~30L/min.
The laser-MAG compound welding method 9. a kind of cut deal angle joint light beam according to claim 1-welding wire misplaces,
It is characterized in that setting technological parameter:
Backing welding: along being 3mm perpendicular to the relative displacement l in bead direction, defocusing amount is ﹣ 1mm, group for laser beam and welding wire tip
It is 1mm to gap, laser head, welding gun and riser angle are 10 °, laser head and the angle of riser and the angle phase of welding gun and riser
Same or different, laser power 4500W, arc current is 100~170A, and laser-arc spacing is 4mm, and speed of welding is
1.0m/min, protection gas use Ar+5%CO2Gaseous mixture, flow 25L/min；
Filling weldering: along being 2mm perpendicular to the relative displacement l in bead direction, defocusing amount is ﹢ 1mm, is swashed for laser beam and welding wire tip
Shaven head, welding gun and riser angle are 10 °, and the angle of the angle and welding gun and riser of laser head and riser is same or different, are swashed
Optical power is 800W, and arc current is 150~190A, and laser-arc spacing is 4mm, speed of welding 0.5m/min, protects gas
Using Ar+5%CO2Gaseous mixture, flow 25L/min.
The laser-MAG compound welding method 10. a kind of cut deal angle joint light beam according to claim 1-welding wire misplaces,
It is characterized in that setting technological parameter:
Backing welding: along being 3mm perpendicular to the relative displacement l in bead direction, defocusing amount is ﹣ 1mm, group for laser beam and welding wire tip
It is 1mm to gap, laser head, welding gun and riser angle are 10 °, laser head and the angle of riser and the angle phase of welding gun and riser
Same or different, laser power 4500W, arc current is 150~170A, and laser-arc spacing is 4mm, and speed of welding is
1.0m/min, protection gas use Ar+5%CO2Gaseous mixture, flow 25L/min；
Filling weldering: along being 2mm perpendicular to the relative displacement l in bead direction, defocusing amount is ﹢ 1mm, is swashed for laser beam and welding wire tip
Shaven head, welding gun and riser angle are 10 °, and the angle of the angle and welding gun and riser of laser head and riser is same or different, are swashed
Optical power is 800W, and arc current is 170~190A, and laser-arc spacing is 4mm, speed of welding 0.5m/min, protects gas
Using Ar+5%CO2Gaseous mixture, flow 25L/min.
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| CN109048059B (en) * | 2018-08-13 | 2021-03-23 | 江苏大学 | Laser scanning wire filling welding method for thin plate |
| CN108971687B (en) * | 2018-09-25 | 2021-01-26 | 长沙理工大学 | Welding method for steel sheet corner joint |
| CN109454333A (en) * | 2018-11-30 | 2019-03-12 | 上海航天精密机械研究所 | Spinning part circumferential weld laser-GMA complex welding method |
| CN109483057A (en) * | 2018-11-30 | 2019-03-19 | 上海航天精密机械研究所 | Circumferential weld laser-MAG compound welding method |
| CN111069865A (en) * | 2020-01-02 | 2020-04-28 | 中车青岛四方机车车辆股份有限公司 | Bogie side beam manufacturing process based on ultra-low carbon bainite high-strength steel |
| CN112355480A (en) * | 2020-11-18 | 2021-02-12 | 上海中船临港船舶装备有限公司 | Single-side welding and double-side welding method for corner joint of medium plate |
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