CN109202292B - Laser + plasma arc + TIG arc combined welding method - Google Patents
Laser + plasma arc + TIG arc combined welding method Download PDFInfo
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- CN109202292B CN109202292B CN201811361922.XA CN201811361922A CN109202292B CN 109202292 B CN109202292 B CN 109202292B CN 201811361922 A CN201811361922 A CN 201811361922A CN 109202292 B CN109202292 B CN 109202292B
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- 238000003466 welding Methods 0.000 title claims abstract description 112
- 238000000034 method Methods 0.000 title claims abstract description 32
- 238000010891 electric arc Methods 0.000 claims abstract description 28
- 230000035515 penetration Effects 0.000 claims abstract description 11
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 11
- 239000010935 stainless steel Substances 0.000 claims abstract description 11
- 210000001503 joint Anatomy 0.000 claims abstract description 7
- 239000002184 metal Substances 0.000 claims description 11
- 230000000087 stabilizing effect Effects 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 230000003111 delayed effect Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 3
- 239000000203 mixture Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
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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
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- Optics & Photonics (AREA)
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- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Arc Welding In General (AREA)
- Laser Beam Processing (AREA)
Abstract
A laser, plasma arc and TIG arc combined welding method. When a stainless steel medium-thin plate is welded, a plasma arc welding mode of a non-groove butt joint mode is often adopted under the condition of not filling welding materials, the welding speed is low, the back penetration is not stable enough, and the plate thickness capable of being welded is limited. The welding device comprises a laser beam (1), a plasma arc (2) and a TIG electric arc (3), wherein a joint welding mode is adopted to butt joint non-beveling thin plates in stainless steel, the moving speeds of the three are the same during welding, and the relative positions are not changed; the laser beam is in front, the plasma arc is in the middle, and the TIG electric arc is behind; in the welding process, the laser beam and the plasma arc act on the same molten pool, so that the welding speed is improved, and the back of the joint is ensured to be well melted through; after TIG electric arc, the formed attractive welding line is obtained while the purity of the welding line is ensured. The invention is used for the laser, plasma arc and TIG arc combined welding method.
Description
Technical Field
The invention relates to a plasma arc welding method, in particular to a laser + plasma arc + TIG arc combined welding method.
Background
When a stainless steel medium-thin plate is welded, a plasma arc welding mode of a non-groove butt joint mode is often adopted under the condition of not filling welding materials, the welding speed is low, the back penetration is not stable enough, and the plate thickness capable of being welded is limited. In order to solve the problem, the requirement cannot be met by simply improving the energy of a plasma arc, laser welding has the outstanding advantages of strong penetrating power, strong arc stabilizing power of a laser beam and the like, the TIG electric arc has the characteristics of energy dispersion, uniform heat and high purity of a welding seam, and the combination of the laser beam, the plasma arc and the TIG electric arc can ensure the stability and penetrability of the electric arc during high-speed welding, obtain a welding seam with attractive appearance and improve the welding capability of a thick plate, so that the method becomes an ideal choice for solving the problem.
Disclosure of Invention
The invention aims to provide a laser + plasma arc + TIG arc combined welding method, which aims to solve the problems that when a stainless steel medium-thin plate is welded, a non-groove butt joint type plasma arc welding mode is adopted under the condition of not filling welding materials, the welding speed is low, the back penetration is not stable enough, and the thickness of the plate which can be welded is limited, and further provides the laser + plasma arc + TIG arc combined welding method.
The above purpose is realized by the following technical scheme:
a laser + plasma arc + TIG arc joint welding method, its composition of the said method includes laser beam, plasma arc, TIG arc, adopt the joint welding way to the stainless steel middle sheet non-grooving carry on the butt joint, the movement velocity of the three is the same while welding, the relative position does not change;
the method comprises the following specific steps: firstly, the position is arranged, the laser beam is arranged in front, the back of the welding seam is ensured to be well melted through by virtue of good penetrating power, the plasma arc is arranged in the middle, and the TIG electric arc is arranged behind; in the welding process, the laser beam and the plasma arc act on the same molten pool to provide enough heat to melt metal, and plasma formed by laser welding has the characteristic of stabilizing the plasma arc, so that the welding speed is greatly improved, and the good penetration of the back of the joint is ensured while the welding speed is improved; after the TIG electric arc is performed, heat is provided, the cooling time of a molten pool is slowed down, and a formed attractive welding line is obtained while the purity of the welding line is ensured;
the energy of the laser beam is selected to meet the requirement of stabilizing the full penetration of the plasma arc and the joint during high-speed welding; the plasma arc energy ensures that the metal of the welding seam is fully melted so as to provide enough metal to meet the requirement of the welding seam extra height; TIG electric arc is required to ensure that a formed attractive welding seam is obtained while the purity of the welding seam is ensured;
the welding is along the welding advancing direction, the laser beam is in front, the plasma arc is in the middle, the TIG electric arc is behind, the laser beam, the plasma arc welding gun and the TIG welding gun are in the same plane, the left angle and the right angle along the welding direction are both 90 degrees, the included angle between the laser beam and the advancing direction is 60-90 degrees, the included angle between the plasma arc welding gun and the advancing direction is 110-130 degrees, the included angle between the TIG electric arc and the advancing direction is 90-110 degrees, the surface of a welded plate is welded, the distance between the laser beam and the plasma arc is 2-5 mm, and the distance between the; in the welding process, the laser beam, the plasma arc and the TIG electric arc are all controlled to be started and stopped automatically, wherein the laser beam and the plasma arc are started and stopped simultaneously, and the start and stop of the TIG electric arc are delayed for 2-3 seconds.
According to the laser + plasma arc + TIG arc combined welding method, the laser power is 5-30kW, the plasma arc current is 150-400A, the TIG arc current is 100-300A, and the thickness of the stainless steel medium thin plate is 4-30 mm.
Advantageous effects
1. The invention adopts the combined welding method of laser, plasma arc and TIG arc, the welding speed is improved by 2-3 times compared with plasma arc welding, the back penetration stability is improved, the welding process is stable, the weld joint is attractive in forming, the thickness of the plate which can be welded is increased, and the high-speed stable welding of the stainless steel plate is realized.
The laser, plasma arc and TIG arc combined welding method comprises a laser beam, a plasma arc and a TIG arc, wherein the laser beam, the plasma arc and the TIG arc have the same speed and do not change relative positions during welding, the laser beam is in front, the good penetration capability is used for ensuring the back of a welding seam to be well melted, the plasma arc is in the middle and forms a molten pool with the laser beam to provide enough heat for melting metal, and the plasma formed by laser welding has the characteristic of stabilizing the plasma arc, so that the welding speed is greatly improved, the welding process is stable, the existence time of the molten pool is short due to the great improvement of the welding speed, the welding seam metal gathers towards the middle to cause poor forming of the surface of the welding seam, therefore, the TIG arc is arranged behind the plasma arc to provide heat, the cooling time of the.
Drawings
Fig. 1 is a schematic structural diagram of the working principle of the invention.
Detailed Description
Example 1:
a laser + plasma arc + TIG arc joint welding method, its composition of the said method includes laser beam 1, plasma arc 2, TIG arc 3, adopt the joint welding way to the thin plate of stainless steel not to open the groove and carry on the butt joint, the movement velocity of the three is the same while welding, the relative position does not change;
the method comprises the following specific steps: firstly, the position is arranged, the laser beam is arranged in front, the back of the welding seam is ensured to be well melted through by virtue of good penetrating power, the plasma arc is arranged in the middle, and the TIG electric arc is arranged behind; in the welding process, the laser beam and the plasma arc act on the same molten pool to provide enough heat to melt metal, and plasma formed by laser welding has the characteristic of stabilizing the plasma arc, so that the welding speed is greatly improved, and the good penetration of the back of the joint is ensured while the welding speed is improved; after the TIG electric arc is performed, heat is provided, the cooling time of a molten pool is slowed down, and a formed attractive welding line is obtained while the purity of the welding line is ensured;
the energy of the laser beam is selected to meet the requirement of stabilizing the full penetration of the plasma arc and the joint during high-speed welding; the plasma arc energy ensures that the metal of the welding seam is fully melted so as to provide enough metal to meet the requirement of the welding seam extra height; TIG electric arc is required to ensure that a formed attractive welding seam is obtained while the purity of the welding seam is ensured;
the welding is along the welding advancing direction, the laser beam is in front, the plasma arc is in the middle, the TIG electric arc is behind, the laser beam, the plasma arc welding gun and the TIG welding gun are in the same plane, the left angle and the right angle along the welding direction are both 90 degrees, the included angle between the laser beam and the advancing direction is 60-90 degrees, the included angle between the plasma arc welding gun and the advancing direction is 110-130 degrees, the included angle between the TIG electric arc and the advancing direction is 90-110 degrees, the surface of a welded plate is welded, the distance between the laser beam and the plasma arc is 2-5 mm, and the distance between the; in the welding process, the laser beam, the plasma arc and the TIG electric arc are all controlled to be started and stopped automatically, wherein the laser beam and the plasma arc are started and stopped simultaneously, and the start and stop of the TIG electric arc are delayed for 2-3 seconds.
Example 2:
according to the laser + plasma arc + TIG arc combined welding method in the embodiment 1, the laser power is 5-30kW, the plasma arc current is 150-400A, the TIG arc current is 100-300A, and the thickness of the stainless steel medium thin plate is 4-30 mm.
Claims (2)
1. A laser + plasma arc + TIG arc combined welding method is characterized in that: the method comprises the steps of laser beam, plasma arc and TIG electric arc, and adopts a combined welding mode to butt joint the thin plates in the stainless steel without grooves, wherein the moving speeds of the three are the same during welding, and the relative positions of the three are not changed;
the method comprises the following specific steps: firstly, the position is arranged, the laser beam is arranged in front, the back of the welding seam is ensured to be well melted through by virtue of good penetrating power, the plasma arc is arranged in the middle, and the TIG electric arc is arranged behind; in the welding process, the laser beam and the plasma arc act on the same molten pool to provide enough heat to melt metal, and plasma formed by laser welding has the characteristic of stabilizing the plasma arc, so that the welding speed is greatly improved, and the good penetration of the back of the joint is ensured while the welding speed is improved; after the TIG electric arc is performed, heat is provided, the cooling time of a molten pool is slowed down, and a formed attractive welding line is obtained while the purity of the welding line is ensured;
the energy of the laser beam is selected to meet the requirement of stabilizing the full penetration of the plasma arc and the joint during high-speed welding; the plasma arc energy ensures that the metal of the welding seam is fully melted so as to provide enough metal to meet the requirement of the welding seam extra height; TIG electric arc is required to ensure that a formed attractive welding seam is obtained while the purity of the welding seam is ensured;
the welding is along the welding advancing direction, the laser beam is in front, the plasma arc is in the middle, the TIG electric arc is behind, the laser beam, the plasma arc welding gun and the TIG welding gun are in the same plane, the left angle and the right angle along the welding direction are both 90 degrees, the included angle between the laser beam and the advancing direction is 60-90 degrees, the included angle between the plasma arc welding gun and the advancing direction is 110-130 degrees, the included angle between the TIG electric arc and the advancing direction is 90-110 degrees, the surface of a welded plate is welded, the distance between the laser beam and the plasma arc is 2-5 mm, and the distance between the; in the welding process, the laser beam, the plasma arc and the TIG electric arc are all controlled to be started and stopped automatically, wherein the laser beam and the plasma arc are started and stopped simultaneously, and the start and stop of the TIG electric arc are delayed for 2-3 seconds.
2. The laser + plasma arc + TIG arc hybrid welding method of claim 1, wherein: the laser power is 5-30kW, the plasma arc current is 150-400A, the TIG arc current is 100-300A, and the thickness of the stainless steel medium thin plate is 4-30 mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811361922.XA CN109202292B (en) | 2018-11-15 | 2018-11-15 | Laser + plasma arc + TIG arc combined welding method |
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| CN201811361922.XA CN109202292B (en) | 2018-11-15 | 2018-11-15 | Laser + plasma arc + TIG arc combined welding method |
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| CN109202292A CN109202292A (en) | 2019-01-15 |
| CN109202292B true CN109202292B (en) | 2020-08-11 |
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| CN111230306B (en) * | 2020-02-17 | 2021-07-13 | 西安交通大学 | F/A ratio synchronous regulation and control method for bimetal penetrating laser welding complex layer tissue |
| CN115283870B (en) * | 2022-09-14 | 2024-02-02 | 西安优弧智熔增材制造有限公司 | Composite heat source additive manufacturing method and device |
| CN115781025B (en) * | 2022-12-08 | 2024-04-16 | 陈耕耘 | Method and device for three-heat source composite welding |
| CN117564476B (en) * | 2024-01-17 | 2024-04-26 | 深圳市铭镭激光设备有限公司 | Laser-arc composite welding equipment and welding method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH10272578A (en) * | 1997-03-28 | 1998-10-13 | Nippon Steel Corp | Pulse laser guided arc welding method |
| CN101474727A (en) * | 2009-01-16 | 2009-07-08 | 北京工业大学 | Laser-arc hybrid welding method of light sheet T type joint |
| CN101992354A (en) * | 2009-08-14 | 2011-03-30 | 南车青岛四方机车车辆股份有限公司 | Micro-beam plasma arc/laser hybrid welding method |
| JP5827454B2 (en) * | 2010-03-08 | 2015-12-02 | 株式会社神戸製鋼所 | Laser / arc combined welding method and welded member manufacturing method using the welding method |
| CN104400226B (en) * | 2014-11-24 | 2016-05-25 | 哈尔滨工业大学 | A kind of double-sided laser-TIG arc hybrid welding method |
| CN104708204B (en) * | 2015-03-30 | 2016-08-31 | 大连理工大学 | A kind of Laser-Arc Hybrid Welding rifle |
| CN104985303B (en) * | 2015-07-27 | 2017-11-17 | 哈尔滨工业大学 | A kind of InFocus TOPTIG twin arc complex welding methods |
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