CN111482699A - High-power laser welding plasma suppression method - Google Patents
High-power laser welding plasma suppression method Download PDFInfo
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- CN111482699A CN111482699A CN202010324296.8A CN202010324296A CN111482699A CN 111482699 A CN111482699 A CN 111482699A CN 202010324296 A CN202010324296 A CN 202010324296A CN 111482699 A CN111482699 A CN 111482699A
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- Prior art keywords
- gas
- welding
- laser
- plasma
- injection device
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- 238000003466 welding Methods 0.000 title claims abstract description 62
- 238000000034 method Methods 0.000 title claims abstract description 32
- 230000001629 suppression Effects 0.000 title claims abstract description 17
- 238000002347 injection Methods 0.000 claims abstract description 25
- 239000007924 injection Substances 0.000 claims abstract description 25
- 230000005540 biological transmission Effects 0.000 claims abstract description 10
- 230000001681 protective effect Effects 0.000 claims abstract description 5
- 239000007789 gas Substances 0.000 claims description 43
- 239000011261 inert gas Substances 0.000 claims description 4
- 238000010521 absorption reaction Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 7
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
Images
Classifications
-
- 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
- B23K26/70—Auxiliary operations or equipment
- B23K26/702—Auxiliary equipment
-
- 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
- B23K26/12—Working by laser beam, e.g. welding, cutting or boring in a special atmosphere, e.g. in an enclosure
-
- 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
- B23K26/14—Working by laser beam, e.g. welding, cutting or boring using a fluid stream, e.g. a jet of gas, in conjunction with the laser beam; Nozzles therefor
-
- 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
- B23K26/14—Working by laser beam, e.g. welding, cutting or boring using a fluid stream, e.g. a jet of gas, in conjunction with the laser beam; Nozzles therefor
- B23K26/142—Working by laser beam, e.g. welding, cutting or boring using a fluid stream, e.g. a jet of gas, in conjunction with the laser beam; Nozzles therefor for the removal of by-products
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Laser Beam Processing (AREA)
Abstract
High power laser welding plasma suppression method. In the existing laser welding, high-temperature plasma clusters reversely sprayed from a plate welding position exist along a light path transmission direction, and the clusters can cause thermal lens effect to influence the focusing position and the energy density of a laser beam, so that a laser protection lens is stained, and the welding quality and the service life are influenced. The invention comprises the following components: the plasma cluster welding device comprises a controller (4), wherein the upper end of the controller is respectively connected with a laser generator (5), a gas injection device A (1), a gas injection device B (2) and a gas suction device (3), the gas injection device A injects gas along the transmission direction of laser beams, the gas injection device A is coaxial or paraxial with the laser beams, protective gas is continuously provided in the welding process, the gas injection device B is arranged on the side of a plasma cluster, gas is injected on the side, and the gas suction device is distributed on the opposite side of the gas injection device B and is mainly used for absorbing the plasma cluster. The method is used for the plasma suppression method of the high-power laser welding.
Description
The technical field is as follows:
the invention relates to the technical field of laser welding, in particular to a plasma suppression method for high-power laser welding.
Background art:
in the high-power laser welding process of metal materials in the prior art, high-temperature plasma clusters reversely sprayed from a plate welding position exist along a light path transmission direction, the higher the power is, the more obvious the plasma clusters are, the existence of the plasma clusters can cause a thermal lens effect to influence the focusing position and the energy density of a laser beam, and further influence the welding penetration, and the plasma clusters can cause the fouling of a laser protection lens, influence the light transmittance, cause the heating of a gun body, and influence the welding quality and the service life of equipment.
Laser welding has the welding speed fast, the joint quality is high, welding deformation is little, outstanding advantage such as welding efficiency height, laser welding uses more and more extensively in the welding field, along with the continuous rising of laser instrument power, welding ability constantly promotes, however, laser power is higher, the welding plasma who produces is more, the existence of plasma cluster can cause the thermal lens effect and influence the focus position and the light beam energy density of laser beam, and then influence the welding penetration, it becomes a big difficult problem to restrain plasma influence to laser welding, single protective gas mode effect is not obvious, need for the emergence of a new method urgently, a high power laser welding plasma suppression method takes place.
The invention content is as follows:
the invention aims to provide a high-power laser welding plasma suppression method, which solves the problem that the existence of high-temperature plasma clusters seriously affects the welding quality and the service life of equipment in the high-power laser welding process.
The above purpose is realized by the following technical scheme:
the high-power laser welding plasma suppression method comprises a controller, wherein the upper end of the controller is respectively connected with a laser generator, a gas injection device A, a gas injection device B and an air suction device, the gas injection device A injects gas along the transmission direction of laser beams and is coaxial or paraxial with the laser beams, protective gas is continuously supplied in the welding process, the gas injection device B is arranged on the side of a plasma cluster and injects gas on the side, and the air suction device is distributed on the opposite side of the gas injection device B and is mainly used for absorbing the plasma cluster.
According to the high-power laser welding plasma suppression method, the controller adjusts the gas flow in real time according to the laser power and the material of a welding workpiece, the jet gas is inert gas, the higher the laser power is, the higher the flow of the jet gas and the absorption gas is, so that plasma clusters generated by welding are reduced or deviate from a laser transmission path, the influence on the laser energy is reduced, and stable welding is realized.
Has the advantages that:
1. the invention relates to a high-power laser welding plasma suppression method, which mainly achieves the purpose of suppressing the number of plasma clusters or forcing the plasma clusters to deviate from a laser transmission path through the combined action of an air injection device A, an air injection device B and an air suction device and the real-time adjustment of air flow according to laser energy change through a control system, and realizes stable and good welding.
The method effectively solves the problems that the welding quality is seriously influenced and the service life of equipment is seriously influenced by the existence of the high-temperature plasma cluster in the high-power laser welding process, and the plasma cluster is reduced by spraying the inert gas and absorbing the gas formed by mixing the sprayed gas and the laser beam, thereby ensuring the welding quality and improving the working efficiency.
Description of the drawings:
fig. 1 is a schematic structural diagram of the working principle of the invention.
FIG. 2 is a graph showing the effect of the plasma suppression method during the welding process.
FIG. 3 is a graph showing the effect of the plasma suppression method during the welding process.
Wherein: 1. the device comprises air injection devices A and 2, air injection devices B and 3, an air suction device 4, a controller 5, a laser generator 6 and a welding workpiece.
The specific implementation mode is as follows:
example 1:
a high-power laser welding plasma suppression method comprises a controller 4, wherein the upper end of the controller is respectively connected with a laser generator 5, a gas injection device A1, a gas injection device B2 and an air suction device 3, the gas injection device A injects gas along the transmission direction of laser beams and is coaxial or paraxial with the laser beams, protective gas is continuously provided in the welding process, the gas injection device B is arranged on the side of a plasma cluster, the gas is injected on the side, and the air suction device is distributed on the opposite side of the gas injection device B and is mainly used for absorbing the plasma cluster.
Example 2:
according to the method for suppressing plasma in high power laser welding of embodiment 1, the controller adjusts the gas flow in real time according to the magnitude of the laser power and the material of the welding workpiece, the jet gas is an inert gas, and the higher the laser power is, the higher the flow of the jet gas and the absorption gas is, so that the plasma clusters generated by welding are reduced or deviated from the laser transmission path, the influence on the laser energy is reduced, and stable welding is realized.
The high-power laser welding plasma suppression method is verified by tests:
the test conditions comprise that the plate is Q345 carbon steel with the thickness of 10mm, I-shaped butt joint is carried out, the length of a welding bead is 600mm, a fiber laser is adopted by a laser, the continuous output mode is adopted, the laser power is 4000W, the defocusing amount is +4mm, the welding speed is 1.0m/min, the jet gas is argon, the gas flow is 18L/min of a jet device A, 24L/min of a jet device B and 30L/min of an air suction device;
and (3) test results: the welding effect is shown in the attached drawings 2 and 3 in a comparison mode, plasma suppression is obvious as shown in the attached drawing 2, welding is carried out without the method, plasma clusters are obvious as shown in the attached drawing 3, after the method is adopted, the plasma clusters are obviously weakened, the welding process is stable, and welding quality is improved.
Claims (2)
1. A high-power laser welding plasma suppression method comprises the following steps: the controller, characterized by: the upper end of the controller is respectively connected with a laser generator, a gas injection device A, a gas injection device B and a gas suction device, the gas injection device A injects gas along the transmission direction of the laser beam and is coaxial or paraxial with the laser beam, protective gas is continuously provided in the welding process, the gas injection device B is arranged on the side of the plasma cluster and injects gas on the side, and the gas suction device is distributed on the opposite side of the gas injection device B and is mainly used for absorbing the plasma cluster.
2. The high power laser welding plasma suppression method of claim 1, wherein: the controller adjusts the gas flow in real time according to the laser power and the material of a welding workpiece, the jet gas is inert gas, the higher the laser power is, the higher the flow of the jet gas and the absorption gas is, so that plasma clusters generated by welding are reduced or deviate from a laser transmission path, the influence on the laser energy is reduced, and stable welding is realized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010324296.8A CN111482699A (en) | 2020-04-22 | 2020-04-22 | High-power laser welding plasma suppression method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010324296.8A CN111482699A (en) | 2020-04-22 | 2020-04-22 | High-power laser welding plasma suppression method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111482699A true CN111482699A (en) | 2020-08-04 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010324296.8A Pending CN111482699A (en) | 2020-04-22 | 2020-04-22 | High-power laser welding plasma suppression method |
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| CN (1) | CN111482699A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11148229B2 (en) * | 2017-10-31 | 2021-10-19 | Samsung Display Co., Ltd. | Laser processing apparatus including a supply nozzle and a suction structure over a stage |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0839279A (en) * | 1994-08-02 | 1996-02-13 | Ishikawajima Harima Heavy Ind Co Ltd | Laser beam irradiating method |
| JP2001150177A (en) * | 1999-11-29 | 2001-06-05 | Nippon Sharyo Seizo Kaisha Ltd | Shield gas atmosphere keeping device for laser beam machine |
| US20020170892A1 (en) * | 2001-05-19 | 2002-11-21 | Jong-Myong Lee | Dry surface cleaning apparatus using a laser |
| JP2004009096A (en) * | 2002-06-06 | 2004-01-15 | Babcock Hitachi Kk | Laser welding device |
| JP2007125576A (en) * | 2005-11-02 | 2007-05-24 | Kikuchiseisakusho Co Ltd | Method and device for fine welding by laser beam |
| JP2009202227A (en) * | 2008-02-29 | 2009-09-10 | Toyota Industries Corp | Laser beam welding apparatus |
| CN103170744A (en) * | 2013-04-11 | 2013-06-26 | 深圳市大族激光科技股份有限公司 | Laser welding device and welding method |
| CN103341689A (en) * | 2013-07-05 | 2013-10-09 | 上海交通大学 | Device and method for restraining laser-induced plasma in high power laser deep penetration welding |
| CN104942436A (en) * | 2014-03-31 | 2015-09-30 | 大族激光科技产业集团股份有限公司 | Variable-focus laser welding equipment, blowing protecting device thereof and blowing protecting method |
| CN105108341A (en) * | 2015-10-09 | 2015-12-02 | 哈尔滨工业大学 | Laser-MAG welding method for steel plate of medium thickness and superhigh strength |
| JP2016030264A (en) * | 2014-07-28 | 2016-03-07 | パナソニックＩｐマネジメント株式会社 | Laser machining head |
| US20160136755A1 (en) * | 2014-11-14 | 2016-05-19 | Toyota Jidosha Kabushiki Kaisha | Laser welding apparatus and laser welding method |
| CN107931838A (en) * | 2017-12-16 | 2018-04-20 | 洛阳鹏起实业有限公司 | Laser soldering device and its side-blown gas shielded structure, position regulating part |
| KR20180074167A (en) * | 2016-12-23 | 2018-07-03 | 주식회사 포스코 | Laser welding apparatus |
| CN109153096A (en) * | 2016-05-23 | 2019-01-04 | 松下知识产权经营株式会社 | Laser soldering device and method for laser welding |
-
2020
- 2020-04-22 CN CN202010324296.8A patent/CN111482699A/en active Pending
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0839279A (en) * | 1994-08-02 | 1996-02-13 | Ishikawajima Harima Heavy Ind Co Ltd | Laser beam irradiating method |
| JP2001150177A (en) * | 1999-11-29 | 2001-06-05 | Nippon Sharyo Seizo Kaisha Ltd | Shield gas atmosphere keeping device for laser beam machine |
| US20020170892A1 (en) * | 2001-05-19 | 2002-11-21 | Jong-Myong Lee | Dry surface cleaning apparatus using a laser |
| JP2004009096A (en) * | 2002-06-06 | 2004-01-15 | Babcock Hitachi Kk | Laser welding device |
| JP2007125576A (en) * | 2005-11-02 | 2007-05-24 | Kikuchiseisakusho Co Ltd | Method and device for fine welding by laser beam |
| JP2009202227A (en) * | 2008-02-29 | 2009-09-10 | Toyota Industries Corp | Laser beam welding apparatus |
| CN103170744A (en) * | 2013-04-11 | 2013-06-26 | 深圳市大族激光科技股份有限公司 | Laser welding device and welding method |
| CN103341689A (en) * | 2013-07-05 | 2013-10-09 | 上海交通大学 | Device and method for restraining laser-induced plasma in high power laser deep penetration welding |
| CN104942436A (en) * | 2014-03-31 | 2015-09-30 | 大族激光科技产业集团股份有限公司 | Variable-focus laser welding equipment, blowing protecting device thereof and blowing protecting method |
| JP2016030264A (en) * | 2014-07-28 | 2016-03-07 | パナソニックＩｐマネジメント株式会社 | Laser machining head |
| US20160136755A1 (en) * | 2014-11-14 | 2016-05-19 | Toyota Jidosha Kabushiki Kaisha | Laser welding apparatus and laser welding method |
| CN105108341A (en) * | 2015-10-09 | 2015-12-02 | 哈尔滨工业大学 | Laser-MAG welding method for steel plate of medium thickness and superhigh strength |
| CN109153096A (en) * | 2016-05-23 | 2019-01-04 | 松下知识产权经营株式会社 | Laser soldering device and method for laser welding |
| KR20180074167A (en) * | 2016-12-23 | 2018-07-03 | 주식회사 포스코 | Laser welding apparatus |
| CN107931838A (en) * | 2017-12-16 | 2018-04-20 | 洛阳鹏起实业有限公司 | Laser soldering device and its side-blown gas shielded structure, position regulating part |
Non-Patent Citations (2)
| Title |
|---|
| 张林杰;张建勋;段爱琴;: "侧吹辅助气流对激光深熔焊接光致等离子体的影响", 焊接学报, no. 10, pages 41 - 44 * |
| 贾时君;蔡艳;李国华;吴毅雄;: "侧吹气体对激光焊接等离子体的影响", 现代制造, no. 20, pages 43 - 45 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11148229B2 (en) * | 2017-10-31 | 2021-10-19 | Samsung Display Co., Ltd. | Laser processing apparatus including a supply nozzle and a suction structure over a stage |
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Application publication date: 20200804 |