CN108067733A - Laser electrical arc complex welding method - Google Patents
Laser electrical arc complex welding method Download PDFInfo
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- CN108067733A CN108067733A CN201611004005.7A CN201611004005A CN108067733A CN 108067733 A CN108067733 A CN 108067733A CN 201611004005 A CN201611004005 A CN 201611004005A CN 108067733 A CN108067733 A CN 108067733A
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- welding
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/346—Working by laser beam, e.g. welding, cutting or boring in combination with welding or cutting covered by groups B23K5/00 - B23K25/00, e.g. in combination with resistance welding
- B23K26/348—Working by laser beam, e.g. welding, cutting or boring in combination with welding or cutting covered by groups B23K5/00 - B23K25/00, e.g. in combination with resistance welding in combination with arc heating, e.g. TIG [tungsten inert gas], MIG [metal inert gas] or plasma welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/60—Preliminary treatment
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Laser Beam Processing (AREA)
- Arc Welding In General (AREA)
Abstract
The present invention relates to a kind of laser electrical arc complex welding methods, square groove, 1 5mm of welding plate spacing, the back side use ceramic substrate, solder flux is overlay between pad and welding plate, broken welding wires are spread in gap, electric arc is before laser beam, 0.5 1.2m/min of speed of welding, 280 360A of arc current, 20 26V of arc voltage, 8 20kW of laser power, spot size of laser beams are not less than 2mm2, it can be achieved that steel plate single pass penetrates within 25mm, double-faced forming.
Description
Technical field
The present invention relates to a kind of laser electrical arc complex welding methods, belong to welding technology field, more particularly to a kind of list
Passage welds the complex welding method of double-faced forming.
Background technology
Arc-welding method is due at low cost, technology maturation, is that structural steel and iron welds most common welding method.But by
Low in arc energy density, the fusion penetration and speed of welding of single pass welding bead are all subject to severely restricts, therefore the steel plate of thickness 25mm
It is generally necessary to 4-8 layers of welding.
For laser since energy density is high, laser welding possesses high fusion penetration ability.Laser Welding, Laser-Arc Hybrid Welding
The methods of be applied.On the one hand fusion penetration can be increased, on the other hand can improve speed of welding, so as to improve welding efficiency.
The characteristics of hybrid Laser-Arc Welding the set high molten wide of arc welding, laser high fusion penetration, therefore possess single pass through welding 10-
The potentiality of 20mm steel plates.
The laser electrical arc complex welding method of existing single pass has the disadvantage that：1) bevel is needed；2) in welding bead root
Usually occurs the incomplete fusion with base material with middle and lower part；3) root shaping is poor, usually has that incompletely filling, reinforcement is excessive, toe crack etc..
Problem above constrains industrial production and application.
The content of the invention
It is an object of the invention to provide a kind of economic, efficiently, stable laser electrical arc complex welding methods, solve slope
While mouth, side wall incomplete fusion and root shaping difference, efficiency is also improved, so as to provide a kind of weldering of economical and efficient for industrial quarters
Connect ways and means.
For achieving the above object, the present invention adopts the following technical scheme that：
A kind of laser electrical arc complex welding method, 1) using I type grooves, groove spacing 1-5mm, the back side uses ceramic liner
Pad overlays one layer of solder flux between pad and welding plate；2) broken welding wires are paved in welding plate gap, highly no more than welding plate height；3) it is electric
Between arc current 280-360A, arc voltage 20-26V, angle of welding gun θ 2=15-25 °, CO2Gas shield；4) laser power 8-
20kW, spot size of laser beams are not less than 2mm2, between 1=5-15 ° of laser beam inclination angle theta；5) electric arc is welding before laser beam
Meet spacing δ=2-4mm in plane, speed of welding 0.5-1.2m/min.
Laser electrical arc complex welding method, broken welding wires diameter 0.8-1.6mm, length is less than≤1.6mm.
Laser electrical arc complex welding method, pad solder flux main component are SiO2And Al2O3, particle size is in 0.05-
Between 0.5mm.
Laser electrical arc complex welding method, within 25mm steel plate can single pass through welding, double-faced forming.
Technology general condensed summary is as follows：
Using I type grooves, groove spacing 1-5mm.
Square groove can save installation time, improve efficiency.Groove spacing 1-5mm, spacing increase with thickness of slab and are increased；
During thickness of slab 15-25mm, when spacing 3-5mm, thickness of slab 5-15mm, spacing 1-3mm.
The back side uses ceramic substrate, and one layer of solder flux is overlay between pad and welding plate.
Root mouldability consideration is in order at using padding and padding solder flux.On the one hand bead formed on back is completed by solder flux,
The defects of elimination incomplete fusion, toe crack and gap；On the other hand burn-through is caused prevented also from due to inappropriate technology.Also it is pre- simultaneously
The problems such as reinforcement is excessively high, root is asymmetric are prevented.
Broken welding wires are paved in welding plate gap, highly no more than welding plate height.
Broken welding wires are spread in advance, mainly solve the problems, such as the filling that square groove is brought.It can effectively be solved using laser heat source
The incomplete fusion problem of side wall.Welding plate width is not exceeded highly, otherwise superficial layer edge broken welding wires, which have little time to melt, causes defect,
It is or incompletely filling.
When broken welding wires thickness is between the 3/5-4/5 of test piece for welding thickness, effect is best.
Between arc current 280-360A, arc voltage 20-26V, angle of welding gun θ 2=15-25 °；
Electric current is used to melt the welding wire being sent into real time, and electric current is proportional with wire feed rate.When electric current is less than 280A, fusing
Welding wire cannot fill up welding plate gap；When it is more than 360A, electric arc is unstable, and spatter increases, and welding bead shaping is deteriorated.Cause
This arc current is between 280-360A.
Arc voltage is for controlling weld width, to solve welding bead surface forming.When voltage is less than 20V, easily cause
Undercut；When voltage is more than 26V, electric arc fusion penetration can be influenced, influences to overlay the fusing of welding wire, causes internal soundness problem.Therefore
Arc voltage is between 20-26V.
Angle of welding gun is in order at welding fabrication needs.
Laser power 8-20kW, spot size of laser beams >=2mm2, between 1=5-15 ° of laser beam inclination angle theta；
Thickness of slab size, that is, the thickness of broken welding wires is overlay, determine the size of laser power.Power is small cannot be complete
Filler wire causes incomplete fusion defect；When power is excessive, burn-through can be caused.
Spot size of laser beams, it is mainly related with welding plate gap.It, can in wide arc gap if spot size is too small
It can cause incomplete fusion.
Laser beam tilt angle is related with device of arc angle.
Electric arc is before laser beam, spacing δ=2-4mm in welding plane, speed of welding 0.5-1.2m/min.
Electric arc first forms a welding pool preceding on surface；The laser beam being followed by is used for increasing fusion penetration, and will be residual
The wire melting of the middle and lower part stayed falls, so as to form a big molten bath.
Laser beam and electric arc welding plane spacing between 2-4mm.Apart from small, the heat that both is not easy to give full play to
Source advantage, penetration capacity will be low；Spacing is big, it will molten bath separation occurs, so as to cause the welding wire of welding bead middle part
Fusing is inadequate, causes incomplete fusion defect.
Laser electrical arc complex welding method, broken welding wires diameter 0.8-1.6mm, length is less than≤1.6mm.
For filling broken welding wires diameter between 0.8-1.6mm, and cannot be more than the real-time wire feed of electric arc size.
Length≤1.6mm of broken welding wires, while its diameter can not be more than.The size of limitation broken welding wires is mainly used for controlling
The actual fusing effect of system and loading.When broken welding wires size is big, it is limited actually to overlay welding wire amount, can cause welding bead recessed after welding
It falls into, filling is inadequate；Meanwhile large scale broken welding wires melt when required heat also can bigger, laser energy can be caused inadequate, not
The problems such as fusion.
Laser electrical arc complex welding method, pad solder flux main component are SiO2And Al2O3, particle size is in 0.05-
Between 0.5mm.Solder flux main function is to provide root shaping.SiO2And Al2O3Welding wire fusing point as main component is low, mobility
Good, processability is good.
Particle size is on the one hand to consider the mobile performance of flux material in itself between 0.05-0.5mm, because being folder
In centre, if itself mobility is bad, it be easy to cause material and is unevenly distributed, so as to influence mouldability.Particle size it is big or
It is small, all can mobility be reduced.
On the other hand, this size also reduces the requirement to energy required for fusing, so as to improve to technological parameter
Adaptability.
Laser electrical arc complex welding method, within 25mm steel plate can single pass through welding, double-faced forming.
Using this method, the steel plate in 25mm thickness can realize that single pass penetrates, positive and negative beautiful appearance.
Advantages of the present invention and advantageous effect：
1. the present invention solves the side of laser-arc hybrid welding process using the method for overlaying welding wire, back side pad and pad solder flux
The problem of wall incomplete fusion, root shaping difference, is, it can be achieved that single pass welds double-faced forming.
2. for the present invention using I type grooves, retaining wall on slope can be saved by overlaying the method for welding wire, improve efficiency.
3. the method for the present invention can realize the single pass welding of steel plate in 25mm thickness, speed of welding is up to 1m/min, efficiency
2 times or more is improved than the prior art.
Description of the drawings：
Attached drawing 1：Welding tooling schematic diagram
Specific embodiment
Technical scheme is further described below in conjunction with preferred embodiment.
Using steel plate Q345D, between thickness 10-25mm, using I type grooves.
In welding and assembling process, test piece for welding back uses ceramic substrate, and one layer of solder flux is overlay between pad and welding plate.So
Broken welding wires are paved in welding plate gap afterwards, highly between the 3/5-4/5 of welding plate height.
Broken welding wires diameter 0.8-1.6mm, length is less than≤1.6mm.Solder flux main component is SiO2And Al2O3, particle size
Between 0.05-0.5mm；
Laser power 20kW, electric welding machine current range 500A.Electric arc is before laser beam, the spacing in welding plane
δ=2-4mm,
Carry out soldering test, then examine quality of weld joint.
Embodiment 1-2：
Steel plate thickness 20mm, using diameter 1.6mm welding wires.Broken welding wires diameter 1.6mm, length 1.4mm.
Electric arc is before laser beam, spacing δ=4mm in welding plane,
Carry out soldering test, technological parameter is shown in Table 1.
Quality of weld joint is shown in Table 2.
Embodiment 3-4：
Steel plate thickness 25mm, using diameter 1.6mm welding wires.Broken welding wires diameter 1.6mm, length 1.4mm.
Electric arc is before laser beam, spacing δ=4mm in welding plane,
Carry out soldering test, technological parameter is shown in Table 1.
Quality of weld joint is shown in Table 2.
Embodiment 5-6：
Steel plate thickness 16mm, using diameter 1.4mm welding wires.Broken welding wires diameter 1.4mm, length 1.4mm.
Electric arc is before laser beam, spacing δ=3m in welding plane,
Carry out soldering test, technological parameter is shown in Table 1.
Quality of weld joint is shown in Table 2.
Embodiment 7-8：
Steel plate thickness 10mm, using diameter 1.2mm welding wires.Broken welding wires diameter 1.2mm, length 1.2mm.
Electric arc is before laser beam, spacing δ=2m in welding plane,
Carry out soldering test, technological parameter is shown in Table 1.
Quality of weld joint is shown in Table 2.
Comparative example 1-2：
Steel plate thickness 20mm, using diameter 1.6mm welding wires.Broken welding wires diameter 1.6mm, length 1.6mm.
Electric arc is before laser beam, spacing δ=4mm in welding plane,
Carry out soldering test, technological parameter is shown in Table 1.
Quality of weld joint is shown in Table 2.
Comparative example 3-4：
Steel plate thickness 25mm, using diameter 1.6mm welding wires.Broken welding wires diameter 1.6mm, length 1.4mm.
Electric arc is before laser beam, spacing δ=4mm in welding plane,
Carry out soldering test, technological parameter is shown in Table 1.
Quality of weld joint is shown in Table 2.
By above-described embodiment, it is compound to overcome existing laser-arc for laser electrical arc complex welding method of the present invention
The problem of the side wall incomplete fusion of welding technique, root shaping difference, can single pass complete the single face welding and double face shapings of 25mm steel plates
Welding.
1 welding condition of table
1 quality of weld joint of table
Claims (4)
1. a kind of laser electrical arc complex welding method, it is characterised in that：1）Using I type grooves, groove spacing 1-5mm, the back side is adopted
With ceramic substrate, one layer of solder flux is overlay between pad and welding plate；2）Broken welding wires are paved in welding plate gap, highly no more than welding plate height
Degree；3）Between 2=15-25o of arc current 280-360A, arc voltage 20-26V, angle of welding gun θ, CO2Gas shield；4）Laser
Power 8-20kW, spot size of laser beams are not less than 2mm2, between 1=5-15o of laser beam inclination angle theta；5）Electric arc laser beam it
Before, spacing δ=2-4mm in welding plane, speed of welding 0.5-1.2m/min.
A kind of 2. laser electrical arc complex welding method according to claim 1, which is characterized in that broken welding wires diameter 0.8-
1.6mm, length is less than≤1.6mm.
A kind of 3. laser electrical arc complex welding method according to claim 1, which is characterized in that pad solder flux main component
For SiO2And Al2O3, particle size is between 0.05-0.5mm.
4. a kind of laser electrical arc complex welding method according to claim 1-3, which is characterized in that steel plate can within 25mm
Single pass penetrates, double-faced forming.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611004005.7A CN108067733A (en) | 2016-11-15 | 2016-11-15 | Laser electrical arc complex welding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611004005.7A CN108067733A (en) | 2016-11-15 | 2016-11-15 | Laser electrical arc complex welding method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108067733A true CN108067733A (en) | 2018-05-25 |
Family
ID=62162747
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611004005.7A Withdrawn CN108067733A (en) | 2016-11-15 | 2016-11-15 | Laser electrical arc complex welding method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108067733A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110315158A (en) * | 2019-06-28 | 2019-10-11 | 中国二十二冶集团有限公司 | Electrolytic cell bottom plate square groove splicing welding method |
-
2016
- 2016-11-15 CN CN201611004005.7A patent/CN108067733A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110315158A (en) * | 2019-06-28 | 2019-10-11 | 中国二十二冶集团有限公司 | Electrolytic cell bottom plate square groove splicing welding method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180525 |
|
| WW01 | Invention patent application withdrawn after publication |