CN106271139A - A kind of Invar steel laser electrical arc complex welding method - Google Patents
A kind of Invar steel laser electrical arc complex welding method Download PDFInfo
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- CN106271139A CN106271139A CN201610726603.9A CN201610726603A CN106271139A CN 106271139 A CN106271139 A CN 106271139A CN 201610726603 A CN201610726603 A CN 201610726603A CN 106271139 A CN106271139 A CN 106271139A
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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
- B23K28/00—Welding or cutting not covered by any of the preceding groups, e.g. electrolytic welding
- B23K28/02—Combined welding or cutting procedures or apparatus
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Abstract
The invention provides a kind of Invar steel laser electrical arc complex welding method, step prepares and hybrid Laser-Arc Welding before including welding wire selection, band root face retaining wall on slope, weldering；Prepare before described weldering to include that weldment clamping is fixed and welds the cleaning of front groove, during welding, be also passed through protective gas to welding region；The angle keeping described laser beam to be positioned at described electric arc front, described laser welding system and arc welding torch and described Invar steel weldment surface along welding direction during welding is respectively set to 45 ° ~ 90 ° and 60 ° ~ 90 °；Described welding method had both remained laser weld energy density height, speed of welding is fast, thermal deformation is little, welding efficiency high, and bridging ability is good, low to clearance requirement, packing material can be used to the advantage improving weld seam metallurgical performance to have again electric arc welding；Simultaneously by control to laser Yu electric arc combined space of points position in welding process, it is to avoid in welding, gas hole defect occurs.
Description
Technical field
The invention belongs to special material welding field, relate to a kind of Invar steel laser-arc hybrid welding in industry method, can keep away
Exempt from welding produces gas hole defect.
Background technology
Composite has the features such as intensity is high, proportion is little, fatigue behaviour is good, is applied in Aerospace Products to carry
Carry out the loss of weight of housing construction, service intervals extends and degradation comprehensive benefit under operation cost, and these advantages make composite become
Manufacture one of stock of Aerospace Products, also make the technology of preparing of composite become development Aerospace Products crucial
One of technology.Invar Steel material be a kind of nickel content at the nickel-base alloy of 35 ~ 36%, there is extremely low thermal coefficient of expansion, stable
Property is good, is particularly suitable for the manufacture material of composite material mould.Composite large mold can be made by the way of welding,
Aeronautics and Astronautics field is with a wide range of applications.
In prior art, the welding of Invar steel mainly uses SMAW, submerged-arc welding, non-consumable gas shielded arc welding, swashs
The methods such as flush weld, wherein: manual arc welding works under hard conditions, efficiency is low, require relatively the technical merit of welding operator
Height, welding quality is affected by human factors relatively big, and welding process is unstable；Submerged arc welding easily causes and is mingled with, welds leakage, is partially welded
Defect, and submerged-arc welding heat input is big, and yielding, heat affected area is relatively big, and mother metal performance is had considerable influence；Non-melt gas
Protection weldering energy density is relatively low, and for slab material, welding efficiency is relatively low, it is impossible to meet actual production demand.Laser welding has
There are advantages such as energy density is big, speed of welding is fast, welding deformation is little, for Invar steel is this, there is bigger hot cracking tendency
Material has bigger advantage.But single method for laser welding cannot add packing material, butt welded seam metallurgical performance has one fixing
Ringing, and weld for slab Invar steel, single laser welding fusion penetration is restricted, and welding quality is still waited to improve.
The welding of Invar steel mainly has a techniques below difficult problem, including the problem of four aspects: one is that Invar steel easily aoxidizes,
Surface is cleared up before weldering, and the moment notes the surface protection after welding, anti-oxidation；Two is due to Invar steel
Composition composition is special, and more sensitive to fire check, the requirement to thermal weld stress is stricter；Three is that Invar steel is used as mould
Steel, its deformation in welding process can affect serviceability and increase orthopedic difficulty of processing, to its control deformed also is
One of welding difficulty；Four is pore problem, and this is also the primary technical barrier of Invar steel welding, owing to Invar steel is containing Ni unit
Element is higher, poor fluidity in the liquid state, easily generates gas hole defect in welding process, and welding quality impact is bigger.?
The Chinese patent literature of Publication No. CN105665933A discloses a kind of Invar mould steel laser-arc hybrid welding in industry side
Method, but the most do not relate to how the gas hole defect in processing welding lines, the method the most not proposing to prevent gas hole defect.
The gas hole defect problem existed in view of the welding of prior art the most unresolved Invar steel, researches and develops a kind of new Invar steel
Welding procedure becomes the task of top priority.
Summary of the invention
It is an object of the invention to overcome above-mentioned the deficiencies in the prior art, it is provided that a kind of Invar steel Laser-Arc Hybrid Welding
Connecing method, this welding method uses laser thermal source and electric arc thermal source phase composite welding Invar Steel material, have energy density greatly,
Speed of welding is fast, welding deformation is little and the advantage of pore-free defect, it is possible to realize the different high-quality of thickness of slab Invar material, height
Efficiency is welded.
In order to solve above-mentioned technical problem, the technical scheme that the embodiment of the present invention provides is:
A kind of Invar steel laser-arc hybrid welding in industry method, including step be:
Select applicable welding wire according to Invar Steel material to be welded, be generally selected the welding wire close with the mother metal composition of weldment,
Welding wire is carried to welding position during welding；
Process the groove of band root face at described Invar steel weldment position to be welded, because Invar steel easily aoxidizes, retaining wall on slope is complete
Cheng Houying welds as early as possible, prevents the secondary pollution of sample；
Carry out welding front preparation, including using fixture to be fixed on the table by described Invar steel weldment clamping, make weldment band root face
Groove is relative；
Laser beam and electric arc that use laser welding system and arc welding torch send respectively carry out Combined Welding to described Invar steel weldment
Connect, i.e. utilize laser beam and electric arc to melt the position to be welded of described Invar steel weldment simultaneously and welding wire forms weld seam thus realizes
Welding；Keep during welding described laser beam along welding direction be positioned at described electric arc front, described laser welding system and arc welding torch with
The angle on described Invar steel weldment surface is respectively set to 45 ° ~ 90 ° and 60 ° ~ 90 °.
Preferably, during welding, it is passed through protective gas to welding position, generally by protective gas nozzle, source of the gas is exported
Protective gas blows to welding position；Further preferably, described protective gas is argon or helium, throughput size 15 ~ 25L/
min。
Preferably, the groove of described band root face is I type, U-shaped, X-type or Y type, wherein: a length of 1 ~ 6mm of described root face, institute
The bevel angle scope stating X-type and Y type groove is 30 ° ~ 60 °, can according to the steel plate thickness of Invar steel weldment use single welding or
The molding modes such as welding by both sides, and select bevel shape and the root face length being suitable for respectively.
Preferably, before preparing before described weldering to be additionally included in welding, the described Invar steel in 20mm around described groove is welded
The mother metal of part carries out polishing cleaning, until exposing metallic luster, it is ensured that the pollutant such as oil-free, water.
Preferably, the mode using reversible deformation combination to rigidly fix carries out described weldment clamping and fixes, and reversible deformation angle sets
It is set to 2 ° ~ 10 °.
As preferably, the stem elongation of described welding wire is set to 15 ~ 20mm, and chevilled silk spacing is set to 2 ~ 5mm, and wire feed rate sets
It is set to 0.5 ~ 22m/min.
As preferably, laser power during welding is 1 ~ 5kW, and optical maser wavelength is 1030nm, laser defocusing amount is set to-2 ~
10mm；Welding current is 130 ~ 350A；Speed of welding is 0.3 ~ 1.5m/min.
Preferred as previous solder methods, uses the welding of multilamellar multipass approach, per pass welded after to interlayer weld seam
Clear up, it is ensured that non-scale, the pollutant such as be mingled with.
It is further preferred that described multi-layer multi-pass welding is three layer of three road welding, interlayer temperature is set to 20 ~ 100 DEG C, often
Together, respectively backing welding, filling is welded and cosmetic welding in layer welding.
Embodiments provide the Invar Steel material side of welding of the optimization that laser thermal source is combined mutually with electric arc thermal source
Method, compared with conventional Invar steel welding method, has the beneficial effect that:
The welding method that the present invention provides both had remained laser weld energy density height, speed of welding is fast, heat input is little, deformation
Little, welding efficiency high, bridging ability is good, low to clearance requirement, packing material can be used to change to have again electric arc welding
The advantage of kind weld seam metallurgical performance；Pass through the control to laser Yu electric arc combined space of points position in welding process simultaneously, it is to avoid
There is gas hole defect in welding；Welding method of the present invention is particularly well-suited to long straight plate and slab, can realize different thickness of slab
The high-quality of Invar material, high efficiency are welded.
Accompanying drawing explanation
Fig. 1 is embodiment of the present invention laser-arc hybrid welding in industry flow chart；
Fig. 2 is embodiment of the present invention Y type welded bands root face divided edge structure schematic diagram；
Fig. 3 is the embodiment of the present invention U-shaped welded bands root face divided edge structure schematic diagram；
Fig. 4 a is the embodiment of the present invention 1 weld seam ground floor shaping schematic view；
Fig. 4 b is the embodiment of the present invention 1 weld seam second layer shaping schematic view；
Fig. 5 a show the embodiment of the present invention 1 weld seam ground floor molding effect；
Fig. 5 b show the embodiment of the present invention 1 weld seam ground floor molding effect；
Fig. 5 c show the embodiment of the present invention 1 two-layer twice welded seam cross section effect；
Fig. 6 a is the embodiment of the present invention 2 backing welding appearance of weld schematic diagram；
Fig. 6 b is that the embodiment of the present invention 2 fills welding line shaping schematic view；
Fig. 6 c is the embodiment of the present invention 2 cosmetic welding appearance of weld schematic diagram；
The appearance of weld effect of the embodiment of the present invention 2 backing welding shown in Fig. 7 a；
Shown in Fig. 7 b, the embodiment of the present invention 2 fills welding line molding effect；
The appearance of weld effect of the embodiment of the present invention 2 cosmetic welding shown in Fig. 7 c；
Fig. 7 d show welded seam longitudinal section, 2 three layer of three road of embodiment of the present invention effect.
Wherein:
H is root face length；α is bevel angle.
Detailed description of the invention
Below in conjunction with accompanying drawing, by embodiment, the present invention will be further described, in order to is more fully understood that the present invention.
The welding procedure that the present invention provides uses laser thermal source and electric arc thermal source phase composite welding Invar Steel material, has
Heat input is little, welding deformation is little and the feature of pore-free defect, it is possible to realize the high-quality, efficiently of different thickness of slab Invar material
Rate is welded.
It is illustrated in figure 1 the basic procedure of a kind of Invar steel laser-arc hybrid welding in industry method of the embodiment of the present invention,
Including:
S1: welding wire selects, and i.e. selectes applicable welding wire according to Invar Steel material to be welded；
S2: band root face retaining wall on slope, i.e. processes the groove of band root face at described Invar steel weldment position to be welded；
S3: prepare before weldering, fixes described Invar steel weldment clamping on the table including using fixture；
S4: laser-arc hybrid welding in industry, i.e. uses the laser beam and electric arc that laser welding system and arc welding torch send respectively to described
Invar steel weldment carries out composite welding, i.e. utilize laser beam and electric arc melt simultaneously described Invar steel weldment position to be welded and
Welding wire forms weld seam thus realizes welding；Described laser beam is kept to be positioned at described electric arc front along welding direction during welding, described
The angle on laser welding system and arc welding torch and described Invar steel weldment surface is respectively set to 45 ° ~ 90 ° and 60 ° ~ 90 °.
About the selection of welding wire, the wire composition that the embodiment of the present invention is used and the mother of Invar steel weldment to be welded
Material composition is close；The stem elongation of welding wire is set to 15 ~ 20mm, and the stem elongation of described welding wire refers to that welding wire termination is to the arc-welding conducted electricity
The distance of rifle termination, this section of welding wire can produce resistance heat when built-up welding, and the burn-off rate of welding wire is determined jointly by electric arc and resistance heat
Fixed；Chevilled silk spacing is set to 2 ~ 5mm；Wire feed rate is between 0.5 ~ 22m/min；
About the design of band root face groove, Primary Reference mother metal thickness, wlding metallurgy characteristic and capacity of equipment, the present invention implements
Example is respectively directed to the steel plate thickness of Invar steel weldment, and between below 5mm, 5 ~ 10mm and more than 10mm devises different groove
Form, as shown in Figures 2 and 3, specific as follows:
Using single face welding and double face shaping mode to weld when the steel plate thickness of described Invar steel weldment is below 5mm, described groove is
I type or Y type, described root face length h is 1 ~ 3mm；
When the steel plate thickness of described Invar steel weldment is between 5mm to 10mm, described groove is Y type, and described root face length h is 3
~5mm；
Single face welding and double face shaping or welding by both sides mode is used to weld when the steel plate thickness of described Invar steel weldment is more than 10mm,
Described band root face groove is U-shaped, X-type groove or Y type, and described root face length h is 3 ~ 6mm；
It addition, bevel angle α of described X-type or Y type groove is 30 ° ~ 60 °.
Prepare about before the weldering of weldment, wherein two pieces of Invar steel weldments with band root face groove are clamped and be fixed on work
It is mainly in view of Invar steel weldment deformation characteristics and the size of deformation force time in station, the fixture material of sufficient intensity should be selected
Material, is considered as the clamping precision of fixture simultaneously；The embodiment of the present invention uses prestrain method to combine the mode rigidly fixed to Invar
Steel weldment carry out clamping, can achieve the desired result；Described prestrain method is by producing change after analyzing weldment welding
The direction of shape and size, should make the deformation that welded part generation size is identical, in opposite direction, before welding to counteract or compensate for postwelding
The deformation occurred, to reach to prevent the purpose of post welding distortion；Reversible deformation angle controls according to the steel plate thickness of Invar steel weldment
2 ° ~ 10 °, concrete:
When the steel plate thickness of described Invar steel weldment is below 5mm, described reversible deformation angle is set to 7 ° ~ 10 °；
When the steel plate thickness of described Invar steel weldment is between 5mm to 15mm, described reversible deformation angle is set to 4 ° ~ 7 °；
When the steel plate thickness of described Invar steel weldment is more than 15mm, described reversible deformation angle is set to 1 ° ~ 4 °.
For groove, owing to Invar steel easily aoxidizes, retaining wall on slope should weld after completing as early as possible, prevents the secondary of sample
Pollute；Before laser-arc hybrid welding in industry step, the mother metal to the described Invar steel weldment in 20mm around described groove carries out beating
Mill cleaning, until exposing metallic luster, it is ensured that the pollutant such as oil-free, water.
During laser-arc hybrid welding in industry, the described laser beam sent respectively by laser welding system and arc welding torch and electric arc
Weld；As embodiment, described laser-arc hybrid welding in industry is multi-layer multi-pass welding, and per pass is carried out after having welded
Interlayer weld seam is cleared up；For multi-layer multi-pass welding, the number of plies and number of channels can be selected as required, as adopted two layer of two road welding
Or three layer of three road welding, generally interlayer temperature is set to 20 ~ 100 DEG C；As a kind of embodiment, three layer of three road welds every layer
Welding together, including backing welding, fills weldering and cosmetic welding, wherein:
Laser power 2 ~ the 5kW of described backing welding, welding current is 130 ~ 300A, and speed of welding is 0.8 ~ 1.5m/min；Described
Filling the laser power 1 ~ 3kW of weldering, welding current is 180 ~ 270A, and speed of welding is 0.3 ~ 1.2m/min；Described cosmetic welding
Laser power 1 ~ 3kW, welding current is 250 ~ 350A, and speed of welding is 0.3 ~ 0.8m/min；Laser defocusing amount is set to-2 ~
10mm, described defocusing amount refers to laser spot distance between working substance；For the starting the arc with receive arc, use slow rise slow fall technique and
The methods such as time delay realize the weld seam of high-quality；
The protective gas being passed through during welding may select argon or helium, and throughput size is limited to 15 ~ 25L/min.
For implementing the laser-arc hybrid welding in industry of the present invention, general laser-arc hybrid welding in industry equipment Foundations collect
Becoming design Invar steel laser-arc hybrid welding in industry platform, described jig includes laser welding system, arc welding system and guarantor
Protect gas system, wherein:
Described laser welding system includes laser instrument and laser welding system, and the two is connected with each other, and during work, described laser instrument produces
Laser launched to the welding position of Invar steel weldment by described laser welding system；Described arc welding system includes being connected with each other
Arc welding torch and Arc Welding Power, also include wire feeder, during work, described arc welding torch connects described Arc Welding Power in described weldering
Connecing position and produce electric arc, described wire feeder carries welding wire to described welding position；Described protective gas system includes protecting gas
Source and protective gas nozzle, protection source of the gas connects protective gas nozzle and carries protective gas to it, described protective gas during work
Protective gas is blowed to described welding position by nozzle.
About the parameter of jig assembly, the output of described laser instrument is 0.24 ~ 12kW, and optical maser wavelength is
1030nm, Transmission Fibers core diameter is 300 μm, and the BPP weighing beam quality is 12mm*mrad；The electric current of described arc welding system is adjusted
Adjusting range is 3 ~ 500A, it is possible to meet the welding of the materials such as carbon steel, chromium nickel stainless steel and aluminium alloy, electric current can with strobe pulse and
Non-pulse mode.
As a kind of embodiment, described jig is also built-in with anti-splashing software, expands the regulation of wire feed rate
Scope；Further, the most built-in Welding procedure expert system in described jig, it is possible to recommend the weldering of different brackets material
Connecing technique, during work, the process data such as welding current, voltage, wire feed rate all can be carried out on the basis of specialist system recommendation
Autonomous optimizing regulation.
Embodiment 1:
Weldment selects the Invar steel plate that 10mm is thick, and the weight content of its chemical composition is: Fe 63.06%, Ni 35.69%, Mn
0.48%, Cr 0.25%, Si 0.24%, Co 0.13%, Mo 0.14%, weldment size 150 × 50 × 10mm, use as shown in Figure 2
Y type groove, root face height 4mm, bevel angle α is 60 °.Wlding selects import Invar M93 welding wire, the weight of its chemical composition
Amount content is: Fe 61.43%, Ni 36.20%, Mn 0.55%, Al 0.54%, Si 0.53%, Mo 0.53, Cr 0.23%, diameter
1.2mm；Welding equipment uses aforesaid Invar steel laser-arc hybrid welding in industry platform.
Prepare before weldering: around groove weld, in 20mm, mother metal is polishing to metallic luster, it is ensured that oil-free in weld groove, water,
Oxide etch things etc. pollute；Using the mode rigidly fixed to fix weldment, the band root face groove making two weldments is relative.
Parameter is provided that
Defocusing amount select 3 ~ 5mm, chevilled silk spacing controls between 4 ~ 5mm, along welding direction, laser beam front, arc welding gun
Rear, dry extension of electrode 15mm, protective gas uses high-purity argon gas.
As shown in figures 4 a and 4b, the present embodiment uses the welding of two-layer twice, every layer of welding together, particularly as follows:
Laser welding system becomes 70 ° of angles, arc welding gun to become 60 ° with the angle γ on weldment surface with the angle β on weldment surface, front
Protection throughput is 12 ~ 18L/min, and back-protective throughput is 12 ~ 18L/min.
Backing welding (ground floor welding) parameter: laser power 3kW, electric current 240 ~ 260A, voltage 25 ~ 27V, wire feed rate
5.9m/min, speed of welding 0.42m/min, gap 0mm.
Cosmetic welding (second layer welding) parameter: laser power 3kW, electric current 290 ~ 310A, voltage 29 ~ 31V, wire feed rate
8m/min, speed of welding 0.6m/min, gap 0mm.
For the starting the arc and receipts arc, the slow method such as technique and time delay that drops of slow liter is used to realize the weld seam of high-quality, concrete,
Arranging laser slow rise time at the starting the arc is 0.5s, initial laser power 240W；Receiving at arc, arranging the laser attenuation time is 0.5s,
End power is 500W.
Appearance of weld effect is as shown in figure 5 a and 5b, it can be seen that first floor penetration is good, and beautiful appearance, in welding process
Arc stability, splashes little, presents typical spray transfer in welding；Second layer cosmetic welding, splashes little, and molding is good, without undercut,
The defects such as crackle；Can be seen that gas hole defect is eliminated the most completely from Fig. 5 c.
Embodiment 2:
Weldment selects the Invar steel plate that 20mm is thick, and its chemical composition is with embodiment 2；Weldment size 150 × 50 × 20mm, uses
Y type groove shown in Fig. 2, root face height 6mm, bevel angle α is 30 °, can also use shown in Fig. 3 as other embodiment
U-shaped groove；Welding wire and welding equipment are with embodiment 1.
Prepare before weldering: around groove weld, in 20mm, mother metal is polishing to metallic luster, it is ensured that oil-free in weld groove, water,
Oxide etch things etc. pollute；The mode rigidly fixed is used to fix weldment the reversible deformation angle of reserved 1.5 °.
Parameter is provided that
Defocusing amount selection-2mm, chevilled silk spacing controls between 2 ~ 3mm, and laser welding system is perpendicular to weldment surface, and angle β is
90 °, arc welding gun becomes 65 ° with the angle γ on weldment surface, along welding direction, laser beam front, arc welding gun rear, welding wire
Stem elongation 15mm, protective gas uses high-purity argon gas.
Shown in as shown in Figure 5 a to 5 c, the present embodiment uses the welding of three layer of three road, every layer of welding together, particularly as follows:
Backing welding: laser power 5.5kW, welding current 240A, speed of welding 1m/min, wire feed rate 6.5m/min；For rising
Arc and receipts arc, use the slow method such as technique and time delay that drops of slow liter, concrete: at the starting the arc, laser power is at 2mm welding seam distance
Reach bonding power；Receiving at arc, at distance weld seam terminal 5mm, laser power begins to decline, and electric current begins to decline simultaneously, to eventually
Dropping to 1kW at Dian and close laser, continuing blow-out after wire feed, and pilot arc 1 ~ 2s after reaching home, first floor welding is complete；
Fill weldering: use pneumatic shovel and stainless steel brush etc. that welding bead is cleared up before welding, remove oxide skin and welding slag and measure layer
Between temperature, determine and weld again after temperature is between 20 ~ 100 DEG C；Laser power 2.2kW, welding current 220A, speed of welding
0.35m/min, wire feed rate 5.4m/min；At the starting the arc, laser power reaches bonding power at 2mm welding seam distance；Receive at arc,
At distance weld seam terminal 5mm, laser power begins to decline, and electric current begins to decline simultaneously, drops to 0.5kW to destination county and closes
Laser, continues blow-out after wire feed, and pilot arc 1 ~ 2s, fills welding complete after reaching home；
Cosmetic welding: use pneumatic shovel and stainless steel brush etc. that welding bead is cleared up before welding, remove oxide skin and welding slag and measure layer
Between temperature, determine and weld again after temperature is between 10 ~ 150 DEG C；Laser power 2.2kW, welding current 300A, speed of welding
0.35m/min, wire feed rate 10m/min；At the starting the arc, laser power reaches bonding power at 2mm welding seam distance；Receive at arc,
At distance weld seam terminal 5mm, laser power begins to decline, and electric current begins to decline simultaneously, drops to 0.5kW to destination county and closes
Laser, continues blow-out after wire feed, and pilot arc 1 ~ 2s, fills welding complete after reaching home.
Face of weld molding effect is as shown in Fig. 7 a to Fig. 7 c, and face of weld molding is good, and penetration is good, beautiful appearance,
Arc stability in welding process, splashes little, without the defect such as undercut, crackle；Can be seen that gas hole defect is disappeared the most completely from Fig. 7 d
Remove.
Should be understood that the above-described embodiment technology only for the explanation present invention is conceived and feature, its object is to for this area skill
Art personnel understand present disclosure and implement according to this, and not detailed description of the invention is exhaustive, can not limit the present invention with this
Protection domain.All modify according to technical scheme or equivalent is without departing from the ancestor of technical solution of the present invention
Purport and scope, it all should be contained in the middle of scope of the presently claimed invention.
Claims (10)
1. an Invar steel laser-arc hybrid welding in industry method, including step be:
Applicable welding wire is selected according to Invar Steel material to be welded；
The groove of band root face is processed at described Invar steel weldment position to be welded；
Carry out welding front preparation, including using fixture, described Invar steel weldment clamping is fixed on the table；
Laser beam and electric arc that use laser welding system and arc welding torch send respectively carry out Combined Welding to described Invar steel weldment
Connect；It is characterized in that:
Described laser beam is kept to be positioned at described electric arc front, described laser welding system and arc welding torch and institute along welding direction during welding
The angle stating Invar steel weldment surface is respectively set to 45 ° ~ 90 ° and 60 ° ~ 90 °.
Method the most according to claim 1, it is characterised in that: it is passed through protective gas to welding position during welding.
Method the most according to claim 2, it is characterised in that: described protective gas is argon or helium, throughput size
15~25L/min。
Method the most according to claim 1, it is characterised in that: the groove of described band root face is I type, U-shaped, X-type or Y type,
Wherein:
A length of 1 ~ the 6mm of described root face, the bevel angle scope of described X-type and Y type groove is 30 ° ~ 60 °.
Method the most according to claim 1, it is characterised in that: prepare to be additionally included in welding before described weldering front to described groove
Around the mother metal of the described Invar steel weldment in 20mm carries out polishing cleaning.
Method the most according to claim 1, it is characterised in that: use reversible deformation to combine the mode rigidly fixed and carry out described
Weldment clamping is fixed, and reversible deformation angle is set to 2 ° ~ 10 °.
Method the most according to claim 1, it is characterised in that: the stem elongation of described welding wire is set to 15 ~ 20mm, between chevilled silk
Away from being set to 2 ~ 5mm, wire feed rate is set to 0.5 ~ 22m/min.
Method the most according to claim 1, it is characterised in that: laser power during welding is 1 ~ 5kW, and optical maser wavelength is
1030nm, laser defocusing amount is set to-2 ~ 10mm；Welding current is 130 ~ 350A；Speed of welding is 0.3 ~ 1.5m/min.
9. according to the method described in any one of claim 1 to 8, it is characterised in that: using the welding of multilamellar multipass approach, per pass welds
After having connect, interlayer weld seam is cleared up.
Method the most according to claim 9, it is characterised in that: described multi-layer multi-pass welding is three layer of three road welding, interlayer
Temperature is set to 20 ~ 100 DEG C, and every layer of welding is together.
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| CN107081528A (en) * | 2017-06-27 | 2017-08-22 | 重庆科技学院 | A kind of method for laser welding of high-grade pipe line steel |
| CN107309563A (en) * | 2017-06-27 | 2017-11-03 | 重庆科技学院 | A kind of laser electrical arc complex welding method of high-grade pipe line steel |
| RU2697756C1 (en) * | 2018-10-31 | 2019-08-19 | Публичное акционерное общество "Челябинский трубопрокатный завод" (ПАО "ЧТПЗ") | Method of defect-free hybrid laser-arc welding of thin-wall butt joints |
| RU2697754C1 (en) * | 2018-10-31 | 2019-08-19 | Публичное акционерное общество "Челябинский трубопрокатный завод" (ПАО "ЧТПЗ") | Method of defect-free hybrid laser-arc welding of thick-wall butt joints |
| CN110682001A (en) * | 2019-10-18 | 2020-01-14 | 长春理工大学 | High-nitrogen steel composite welding device and method for reducing air holes under assistance of mechanical vibration |
| CN112207466A (en) * | 2020-10-20 | 2021-01-12 | 中国石油天然气集团有限公司 | Welding method for double-side coated stainless steel composite plate |
| CN112404733A (en) * | 2020-11-19 | 2021-02-26 | 首都航天机械有限公司 | Laser-arc hybrid welding method for medium-thickness and large-thickness high-temperature alloy structure |
| CN112620944A (en) * | 2020-12-09 | 2021-04-09 | 江苏科技大学 | laser-MIG (Metal-inert gas) composite welding method for ship aluminum alloy medium plate |
| CN113215494A (en) * | 2021-05-07 | 2021-08-06 | 西安钢研功能材料股份有限公司 | Preparation method of aviation invar alloy plate |
| CN113231716A (en) * | 2021-05-17 | 2021-08-10 | 唐山松下产业机器有限公司 | Twin-wire welding control method, control system, electronic device, and storage medium |
| CN114012221A (en) * | 2021-11-26 | 2022-02-08 | 昌河飞机工业（集团）有限责任公司 | Welding method for forming die surface of invar alloy composite material |
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| CN114769882A (en) * | 2022-04-25 | 2022-07-22 | 广船国际有限公司 | Welding equipment and steel plate welding method |
| CN114952003A (en) * | 2021-12-10 | 2022-08-30 | 西安交通大学 | Control method for forming quality of large-thick-plate narrow-gap laser filler wire welding |
| CN115415671A (en) * | 2022-09-14 | 2022-12-02 | 聊城产研创新发展有限公司 | laser-GMAW electric arc hybrid welding method for steel hub |
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| CN107309563A (en) * | 2017-06-27 | 2017-11-03 | 重庆科技学院 | A kind of laser electrical arc complex welding method of high-grade pipe line steel |
| CN107081528A (en) * | 2017-06-27 | 2017-08-22 | 重庆科技学院 | A kind of method for laser welding of high-grade pipe line steel |
| RU2697756C1 (en) * | 2018-10-31 | 2019-08-19 | Публичное акционерное общество "Челябинский трубопрокатный завод" (ПАО "ЧТПЗ") | Method of defect-free hybrid laser-arc welding of thin-wall butt joints |
| RU2697754C1 (en) * | 2018-10-31 | 2019-08-19 | Публичное акционерное общество "Челябинский трубопрокатный завод" (ПАО "ЧТПЗ") | Method of defect-free hybrid laser-arc welding of thick-wall butt joints |
| CN110682001B (en) * | 2019-10-18 | 2021-09-21 | 长春理工大学 | High-nitrogen steel composite welding device and method for reducing air holes under assistance of mechanical vibration |
| CN110682001A (en) * | 2019-10-18 | 2020-01-14 | 长春理工大学 | High-nitrogen steel composite welding device and method for reducing air holes under assistance of mechanical vibration |
| CN112207466A (en) * | 2020-10-20 | 2021-01-12 | 中国石油天然气集团有限公司 | Welding method for double-side coated stainless steel composite plate |
| CN112404733A (en) * | 2020-11-19 | 2021-02-26 | 首都航天机械有限公司 | Laser-arc hybrid welding method for medium-thickness and large-thickness high-temperature alloy structure |
| CN112620944A (en) * | 2020-12-09 | 2021-04-09 | 江苏科技大学 | laser-MIG (Metal-inert gas) composite welding method for ship aluminum alloy medium plate |
| CN113215494A (en) * | 2021-05-07 | 2021-08-06 | 西安钢研功能材料股份有限公司 | Preparation method of aviation invar alloy plate |
| CN113231716A (en) * | 2021-05-17 | 2021-08-10 | 唐山松下产业机器有限公司 | Twin-wire welding control method, control system, electronic device, and storage medium |
| CN113231716B (en) * | 2021-05-17 | 2022-10-14 | 唐山松下产业机器有限公司 | Twin-wire welding control method, control system, electronic device, and storage medium |
| CN114012221A (en) * | 2021-11-26 | 2022-02-08 | 昌河飞机工业（集团）有限责任公司 | Welding method for forming die surface of invar alloy composite material |
| CN114043092A (en) * | 2021-12-10 | 2022-02-15 | 哈尔滨工业大学 | Point ring laser and electric arc composite welding method |
| CN114043092B (en) * | 2021-12-10 | 2022-05-27 | 哈尔滨工业大学 | Point ring laser and electric arc composite welding method |
| CN114952003A (en) * | 2021-12-10 | 2022-08-30 | 西安交通大学 | Control method for forming quality of large-thick-plate narrow-gap laser filler wire welding |
| CN114769882A (en) * | 2022-04-25 | 2022-07-22 | 广船国际有限公司 | Welding equipment and steel plate welding method |
| RU2787195C1 (en) * | 2022-05-06 | 2022-12-29 | Публичное акционерное общество "Трубная металлургическая компания" (ПАО "ТМК") | Method for hybrid laser-arc welding of thick-wall pipes |
| CN115415671A (en) * | 2022-09-14 | 2022-12-02 | 聊城产研创新发展有限公司 | laser-GMAW electric arc hybrid welding method for steel hub |
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