CN109108466A - Cut deal square groove laser and electric arc combine welding method - Google Patents
Cut deal square groove laser and electric arc combine welding method Download PDFInfo
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- CN109108466A CN109108466A CN201811245516.7A CN201811245516A CN109108466A CN 109108466 A CN109108466 A CN 109108466A CN 201811245516 A CN201811245516 A CN 201811245516A CN 109108466 A CN109108466 A CN 109108466A
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- laser
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- electric arc
- gap
- square groove
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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
Cut deal square groove laser and electric arc combine welding method, are related to welding field.The present invention is to solve traditional welding manner and need to open up biggish welding groove, need more filler wire, the problems such as thermal weld stress is larger, is easy to produce biggish welding deformation, and welding efficiency is low, of poor quality and hybrid Laser-Arc Welding is splashed greatly, appearance of weld is poor.Using laser operations preceding, electric arc operates posterior mode and welds to motherboard gap, and the electric arc for keeping the laser and welding gun that, there are certain chevilled silk distance, issue laser between laser and electric arc to issue does not act in a molten bath.For welding cut deal.
Description
Technical field
The present invention relates to cut deal square groove laser and electric arc to combine welding method.Belong to welding field.
Background technique
Cut deal refers to the steel plate of 4.5~25mm of thickness, is divided into common carbon steel plate, low alloy steel plate, ship plate, boiler
Steel plate, steel plate of pressure vessel, bridge steel plate, nuclear power steel plate etc. are mainly used in architectural engineering, mechanical engineering, vessel fabrication, make
The fields such as ship, bridge manufacture, nuclear power, the welding of cut deal mainly uses traditional welding method at present, such as non-melt pole gas
Protection welding (GTAW), gas metal-arc welding meet (GMAW) and submerged-arc welding (SAW) etc., traditional welding method mainly have with
Lower several respects are insufficient: (1) in order to guarantee the penetration and fusion character of the root of weld, needing to open up biggish welding groove, use
The welding method of multilayer multiple tracks, welding efficiency are low；(2) groove is larger, needs more filler wire, and economic benefit is low；(3) it welds
It is larger to connect heat input, is easy to produce biggish welding deformation, the orthopedic operational difficulties of postwelding；(4) weld seam thermal damage is larger, connector
It can be lower.
In order to overcome the shortcomings of traditional welding method, frequently with laser electrical arc complex welding method, since laser energy is close
Degree is higher, and good fusion and penetration ability can be realized in the case where square groove, and it is defeated to improve welding efficiency, reduction sweating heat
The usage amount for entering, being greatly reduced wlding, increases economic efficiency.
Laser electrical arc complex welding method generally uses laser in the posterior mode of preceding electric arc, and laser and arcing
In a molten bath, the advantages of not only having combined arc-welding and Laser Welding, but also the deficiency of other side is mutually compensated for, laser guarantees steel plate
Penetration, electric arc guarantee surface forming, the more thick corresponding laser power of steel plate is bigger, especially for for thickness 10mm with
On steel plate, laser power generally requires 10KW or more just and can guarantee the penetration at the back side, and biggish laser power acts on electric arc
In molten bath, electric arc melting bath is made to produce violent concussion, welding process is extremely unstable, generates a large amount of splashings, the forming of weld seam front
Very poor, back of weld generates humping weld, and the above welding defect is difficult to repair, and has seriously affected the normal use of product,
In addition application of the hybrid Laser-Arc Welding in cut deal is also limited.
Summary of the invention
The present invention is to need more filling to weld to solve traditional welding manner and need to open up biggish welding groove
Silk, thermal weld stress is larger, is easy to produce biggish welding deformation, and welding efficiency is low, of poor quality and laser-arc hybrid welding process
Connect the problems such as splashing is big, appearance of weld is poor.Cut deal square groove laser is now provided and electric arc combines welding method.
Cut deal square groove laser and electric arc combine welding method, the method are as follows:
Using laser operations preceding, electric arc operates posterior mode and welds to motherboard (1) gap, and keeps laser
There are certain chevilled silk distance between electric arc, the electric arc that the laser and welding gun for issuing laser issue does not act on one and melts
In pond.
The application's has the beneficial effect that
The application is combined using laser and electric arc welds gap, is kept between certain chevilled silk between laser and electric arc
Away from, laser in preceding electric arc rear, so that laser and electric arc do not act in a molten bath, it can be to avoid excessive laser power
The stability for influencing electric arc melting bath, can not only guarantee the penetration and forming of cut deal back of weld, but also weldering can be greatly decreased
Splashing is connect, simultaneously because the pre- heat effect of laser in front, it is ensured that back arc weld sprawls under higher speed of welding
Property, single welding guarantees single-sided welding two-sides forming, guarantees welding quality, improves welding efficiency.The application is not only applicable to
The welding of steel plate can equally be well applied to the welding of the metal materials such as steel pipe, magnesium alloy, aluminium alloy, titanium alloy.
Detailed description of the invention
Fig. 1 is the process that cut deal square groove laser described in specific embodiment one and electric arc combine welding method
Figure；
Fig. 2 is that cut deal square groove laser and electric arc combine welded structure schematic diagram；Appended drawing reference 2 indicates welding gun
Welding arc, appended drawing reference 3 indicate single laser weld, and appended drawing reference 4 indicates arc welding weld seam, and appended drawing reference 5 indicates
The laser beam that laser issues, appended drawing reference 6 indicate the arc-welding nozzle of welding gun.
Specific embodiment
Specific embodiment 1: present embodiment is illustrated referring to Figures 1 and 2, cut deal described in present embodiment
Square groove laser and electric arc combine welding method, the method are as follows:
Using laser operations preceding, electric arc operates posterior mode and welds to motherboard (1) gap, and keeps laser
There are certain chevilled silk distance between electric arc, the electric arc that the laser and welding gun for issuing laser issue does not act on one and melts
In pond.
Specific embodiment 2: present embodiment be to cut deal square groove laser described in specific embodiment one and
Electric arc joint welding method is described further, in present embodiment, using laser operations in preceding, the posterior mode of electric arc operation
Motherboard (1) gap is welded, and keeps between laser and electric arc that there are the detailed processes of certain chevilled silk distance are as follows:
Step 1: the laser beam that laser issues is carried out by the head end in base material (1) gap along gap length direction
The welding of laser penetration starts electric arc, in base material when the laser that laser generates runs to 10~50mm of head end apart from gap
The head end in gap starts to carry out cover welding along gap length direction；
Step 2: the distance for being always maintained at 10~50mm between laser and electric arc is welded along gap；
Step 3: laser stopping movement, arc welding gun is completed remaining until laser reaches the tail end in motherboard (1) gap
Also stopping acts after the welding of the gap 10~50mm, to complete the welding to motherboard (1) gap.
Embodiment:
Cut deal square groove laser and electric arc combine welding method, the described method comprises the following steps:
Step 1: the size of 304 stainless steel plates is 300 × 100mm, thickness 12mm, square groove, using laser power
The laser of 15KW carries out the welding of laser penetration along gap since the head end in 304 stainless steel plate gaps, when laser generates
Laser when running to the head end 25m apart from gap, starting electric arc welds gap, and arc welding uses 308L stainless steel
Welding wire, diameter Ф 1.2mm, droplet transfer mode are pulse, and speed of welding 1m/min, welding current 220A, protective gas is mixed
Close gas (Ar98%+O22%), shield gas flow rate 25L/min；
Step 2: the distance for being always maintained at 25m between laser and electric arc is welded along gap；
Step 3: laser stopping movement, arc welding gun is completed remaining until laser reaches the tail end in motherboard (1) gap
Also stopping acts after the welding of the gap 10~50mm, to complete the welding to 304 stainless steel plate gaps.
The stainless steel weld joint front and back forming welded with the present processes is very beautiful, splashes seldom, weld seam spreadability
Well, the defects of weld seam front and back zero defect after dye penetrant inspection, x-ray inspection does not find incomplete fusion, stomata.Butt joint mechanical property
It can be carried out analysis test, as follows with traditional MAG weldering comparing result:
Combine welding method mechanical property than laser-MIG/MAG with traditional MAG weldering to have a certain upgrade, welding efficiency is
14 times of MAG weldering, welding wire loading are the 1/15 of MAG weldering, and heat input is the 3/11 of MAG weldering.
Specific embodiment 3: present embodiment be to cut deal square groove laser described in specific embodiment two and
Welding gun joint welding method be described further, in present embodiment, laser weld when motherboard (1) between formed angle
It is 80 °~90 °.
Specific embodiment 4: present embodiment be to cut deal square groove laser described in specific embodiment two and
Electric arc joint welding method is described further, and in present embodiment, formed angle is between motherboard (1) when arc welding
55 °~65 °.
Specific embodiment 5: present embodiment be to cut deal square groove laser described in specific embodiment one and
Electric arc joint welding method is described further, and in present embodiment, the laser power of laser is P≤10KW.
Specific embodiment 6: present embodiment be to cut deal square groove laser described in specific embodiment one and
Electric arc joint welding method is described further, and in present embodiment, laser uses YAG laser, dish-like laser, optical fiber
Laser, semiconductor laser or CO2 laser.
Claims (6)
1. cut deal square groove laser and electric arc combine welding method, which is characterized in that the method are as follows:
Using laser operations preceding, electric arc operates posterior mode and welds to motherboard (1) gap, and keeps laser and electricity
There are certain chevilled silk distance between arc, the electric arc that the laser and welding gun for issuing laser issue does not act on a molten bath and works as
In.
2. cut deal square groove laser according to claim 1 and electric arc combine welding method, which is characterized in that use
Preceding, electric arc operates posterior mode and welds to motherboard (1) gap laser operations, and keeps depositing between laser and electric arc
In the detailed process of certain chevilled silk distance are as follows:
Step 1: the laser beam that laser issues carries out laser along gap length direction by the head end in base material (1) gap
Penetration welding starts electric arc, in base material gap when the laser that laser generates runs to 10~50mm of head end apart from gap
Head end start along gap length direction carry out cover welding；
Step 2: the distance for being always maintained at 10~50mm between laser and electric arc is welded along gap；
Step 3: laser stopping acts until laser reaches the tail end in motherboard (1) gap, arc welding gun completion residue 10~
Also stopping acts after the welding of the gap 50mm, to complete the welding to motherboard (1) gap.
3. cut deal square groove laser and electric arc combine welding method according to claim 2, which is characterized in that laser beam
Formed angle is 80 °~90 ° between motherboard (1).
4. cut deal square groove laser and electric arc combine welding method according to claim 2, which is characterized in that arc welding
Formed angle is 55 °~65 ° between rifle and motherboard (1).
5. cut deal square groove laser and electric arc combine welding method according to claim 1, which is characterized in that laser
Laser power be P≤10KW.
6. cut deal square groove laser and electric arc combine welding method according to claim 1, which is characterized in that laser
Using YAG laser, dish-like laser, optical fiber laser, semiconductor laser or CO2 laser.
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| CN201811245516.7A CN109108466A (en) | 2018-10-24 | 2018-10-24 | Cut deal square groove laser and electric arc combine welding method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112453707A (en) * | 2020-11-18 | 2021-03-09 | 上海中船临港船舶装备有限公司 | Method for welding thick plate of ship on single surface |
| CN113210869A (en) * | 2021-04-25 | 2021-08-06 | 江苏通宇钢管集团有限公司 | Efficient titanium alloy laser-electric arc composite heat source pipeline welding process |
| CN113649700A (en) * | 2021-09-08 | 2021-11-16 | 中国人民解放军陆军装甲兵学院 | Magnesium alloy additive repairing remanufacturing method |
| CN114453754A (en) * | 2022-01-30 | 2022-05-10 | 清华大学 | High-speed welding hump defect suppression method based on laser arc common molten pool decoupling |
| CN114918544A (en) * | 2022-05-18 | 2022-08-19 | 哈尔滨焊接研究院有限公司 | Laser CMT (constant current time) joint welding method suitable for thin arm support of overhead working truck |
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| CN112453707A (en) * | 2020-11-18 | 2021-03-09 | 上海中船临港船舶装备有限公司 | Method for welding thick plate of ship on single surface |
| CN113210869A (en) * | 2021-04-25 | 2021-08-06 | 江苏通宇钢管集团有限公司 | Efficient titanium alloy laser-electric arc composite heat source pipeline welding process |
| CN113649700A (en) * | 2021-09-08 | 2021-11-16 | 中国人民解放军陆军装甲兵学院 | Magnesium alloy additive repairing remanufacturing method |
| CN114453754A (en) * | 2022-01-30 | 2022-05-10 | 清华大学 | High-speed welding hump defect suppression method based on laser arc common molten pool decoupling |
| CN114918544A (en) * | 2022-05-18 | 2022-08-19 | 哈尔滨焊接研究院有限公司 | Laser CMT (constant current time) joint welding method suitable for thin arm support of overhead working truck |
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