CN106735908B - A kind of method for laser welding of military launcher - Google Patents
A kind of method for laser welding of military launcher Download PDFInfo
- Publication number
- CN106735908B CN106735908B CN201710008146.4A CN201710008146A CN106735908B CN 106735908 B CN106735908 B CN 106735908B CN 201710008146 A CN201710008146 A CN 201710008146A CN 106735908 B CN106735908 B CN 106735908B
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- China
- Prior art keywords
- laser beam
- welding
- laser
- leading
- rear row
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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
- B23K26/20—Bonding
- B23K26/21—Bonding by welding
- B23K26/24—Seam 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
- B23K26/346—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)
- Heat Treatment Of Articles (AREA)
Abstract
The invention discloses a kind of method for laser welding of military launcher, using laser heat source, the laser welding light beam includes leading laser beam and rear row laser beam, leading laser beam, for forming laser keyhole in weld seam, row laser beam heats weld seam for continuing afterwards, reduces its cooling velocity, reduces the tendency of crackle generation.
Description
Technical field
The invention belongs to materials processing technology fields, more particularly, to a kind of method for laser welding of military launcher.
Background technique
Launcher be hang and fire a rocket for carrier aircraft, the dedicated unit of guided missile etc., have volume big, weight is big, just
Property requires high, and the material load-bearing of the high feature of level of integrated system, launcher is big, and structure is complicated, and welding difficulty is big, laser-
Electric arc combined weldering is while to act on the same Working position of workpiece in such a way that laser heat source, electric arc heat source are compound, is passed through
The interaction of two heat sources and composite heat power supply and workpiece act on, and complete welding process.Laser-arc hybrid welding in industry is in automobile, aviation
It is had been widely used in the precision welding of the industries such as space flight, ship, has both high-energy density, is directed toward accurate and electric arc
The advantages that high thermoelectric conversion rate of plasma, technical maturity, but since laser welding is molten in face of weld by laser
Laser keyhole is formed out, and the mobility of molten pool metal increases, and generates surge phenomenon, but due to the temperature pole in welding process keyhole
Height, in subsequent cooling procedure, cooling is too fast, is easy to cause the generation of crackle.
Summary of the invention
In order to solve the above technical problems, the invention proposes a kind of laser-electric arcs for being particularly suitable for military launcher to answer
Welding method laser means are closed, after by the way of the heating of row laser, reduce cooling velocity, reduces crackle and generates tendency.
The complete technical solution of the present invention includes:
A kind of method for laser welding of military launcher, which comprises the steps of:
1) finished edge at welding surface；
2) welding procedure, using laser heat source, the laser welding light beam includes leading laser beam and rear row laser beam,
Leading laser beam, for forming laser keyhole in weld seam, rear row laser beam heats weld seam for continuing, and reduces its cooling speed
Degree, the power of the leading laser beam are 8-10KW, electric current 250-270A, speed of welding 0.2-0.8m/min, rear row laser
The power of beam is 1-1.5KW, electric current 150-180A, forward speed 0.2-0.8m/min.
The groove is one of single V groove with root face, U-shaped groove or K shape groove.
Leading laser beam uses arc composite heat source simultaneously, and electric arc uses tungsten electrode, 2~3mm of arc length, welding current
100~150A, speed of welding 0.2-0.8m/min, argon gas flow 12-18L/min.
0-5mm is spaced between leading laser beam and rear row laser beam.
The present invention compared with the existing technology the advantages of be: by the way of two beam laser irradiations, leading laser beam is used for
Face of weld, is melted and is formed laser keyhole by welding, after leading laser beam warp, weld seam cooled and solidified, due to solidifying
The too fast convergent force that will lead to of weld seam cooling velocity is too strong in the process, cracks, and rear row laser beam heats solidification zone, prolongs
Delay its cooling velocity, reduces the tendency of crackle generation.
Specific embodiment
The present invention will be further described With reference to embodiment.
Embodiment 1:
The finished edge at military launcher welding point；It is 23 ° of bevel angle, width of root face 3mm, blunt using single V groove with root face
Side gap 2mm then uses leading CO2Laser and rear row CO2Laser is welded, and leading laser beam is used in weld seam
Formed laser keyhole, while use arc composite heat source, electric arc use tungsten electrode, 2~3mm of arc length, welding current 100~
150A, rear row laser beam heat weld seam for continuing after welding, reduce its cooling velocity, the power of the leading laser beam is
10KW, electric current 250A, speed of welding 0.3m/min, the power of rear row laser beam are 1.5KW, electric current 160A, forward speed
It is identical as leading laser beam, 3mm is spaced between leading laser beam and rear row laser beam.After leading laser beam warp, weld seam is cold
But it solidifies, since the too fast convergent force that will lead to of weld seam cooling velocity is too strong in process of setting, cracks, rear row laser beam pair
Solidification zone is heated, its cooling velocity is delayed, and reduces the tendency of crackle generation.
The above is only presently preferred embodiments of the present invention, is not intended to limit the invention in any way, it is all according to the present invention
Technical spirit any simple modification to the above embodiments, change and equivalent structural changes, still fall within skill of the present invention
In the protection scope of art scheme.
Claims (1)
1. a kind of method for laser welding of military launcher, which comprises the steps of:
1) finished edge at welding surface；
2) welding procedure, using laser heat source, laser welding light beam includes leading laser beam and rear row laser beam, leading laser
Beam, for forming laser keyhole in weld seam, rear row laser beam heats weld seam for continuing, reduces its cooling velocity, the elder generation
The power of row laser beam is 8-10KW, electric current 250-270A, speed of welding 0.2-0.8m/min, and the power of rear row laser beam is
1-1.5KW, electric current 150-180A, forward speed 0.2-0.8m/min；
The groove is one of single V groove with root face, U-shaped groove or K shape groove；
Leading laser beam uses arc composite heat source simultaneously, and electric arc uses tungsten electrode, 2~3mm of arc length, welding current 100
~150A, speed of welding 0.2-0.8m/min, argon gas flow 12-18L/min；
0-5mm is spaced between leading laser beam and rear row laser beam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710008146.4A CN106735908B (en) | 2017-01-05 | 2017-01-05 | A kind of method for laser welding of military launcher |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710008146.4A CN106735908B (en) | 2017-01-05 | 2017-01-05 | A kind of method for laser welding of military launcher |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106735908A CN106735908A (en) | 2017-05-31 |
| CN106735908B true CN106735908B (en) | 2019-06-25 |
Family
ID=58950418
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710008146.4A Active CN106735908B (en) | 2017-01-05 | 2017-01-05 | A kind of method for laser welding of military launcher |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106735908B (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2263823B1 (en) * | 2008-11-27 | 2020-09-23 | Panasonic Intellectual Property Management Co., Ltd. | Hybrid welding method and hybrid welding apparatus |
| US20100288738A1 (en) * | 2009-05-15 | 2010-11-18 | General Electric Company | Welding apparatus and method |
| US20130309000A1 (en) * | 2012-05-21 | 2013-11-21 | General Electric Comapny | Hybrid laser arc welding process and apparatus |
| US9095928B2 (en) * | 2012-07-06 | 2015-08-04 | Lincoln Global, Inc. | Method and system for heating consumable during hot wire |
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2017
- 2017-01-05 CN CN201710008146.4A patent/CN106735908B/en active Active
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| Publication number | Publication date |
|---|---|
| CN106735908A (en) | 2017-05-31 |
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| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 266000 South Head of Huiying Street, Jiaozhou Economic and Technological Development Zone, Shandong Province Applicant after: Qingdao Branch Co., Ltd. of Mechanical Science Research Institute Address before: 266000 South Head of Huiying Street, Jiaozhou Economic and Technological Development Zone, Qingdao City, Shandong Province Applicant before: Qingdao Branch of China Academy of Machinery Science and Technology |
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| CP01 | Change in the name or title of a patent holder |
Address after: 266000 South Head of Huiying Street, Jiaozhou Economic and Technological Development Zone, Shandong Province Patentee after: China National Academy of Machinery Group Qingdao Branch Co.,Ltd. Address before: 266000 South Head of Huiying Street, Jiaozhou Economic and Technological Development Zone, Shandong Province Patentee before: Qingdao Branch Co., Ltd. of Mechanical Science Research Institute |
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| CP01 | Change in the name or title of a patent holder |