CN106735908A - 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
- CN106735908A CN106735908A CN201710008146.4A CN201710008146A CN106735908A CN 106735908 A CN106735908 A CN 106735908A CN 201710008146 A CN201710008146 A CN 201710008146A CN 106735908 A CN106735908 A CN 106735908A
- Authority
- CN
- China
- Prior art keywords
- laser
- laser beam
- welding
- leading
- rear row
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- B23K26/20—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
Abstract
The invention discloses a kind of method for laser welding of military launcher, using laser heat source, described 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 is used to continue to heat weld seam afterwards, reduces its cooling velocity, reduces the tendency of crackle generation.
Description
Technical field
The invention belongs to materials processing technology field, more particularly, to a kind of method for laser welding of military launcher.
Background technology
Launcher be hang and fire a rocket for carrier aircraft, the special purpose device of guided missile etc., big with volume, weight is big, just
Property the characteristics of require high, level of integrated system is high, the material load-bearing of launcher is big, and complex structure, and welding difficulty is big, laser-
Electric arc combined weldering is by the way of laser heat source, electric arc thermal source are compound, while acting on the same Working position of workpiece, to pass through
Two thermals source are interacted and composite heat power supply is acted on workpiece, complete welding process.Laser-arc hybrid welding in industry is in automobile, aviation
Obtained a wide range of applications in the precision welding of the industries such as space flight, ship, have high-energy-density concurrently, point to accurate and electric arc
The advantages of thermoelectricity conversion ratio high, technical maturity of plasma, but because laser welding is molten in face of weld by laser
Go out to be formed laser keyhole, the mobility of molten pool metal increases, and produces surge phenomenon, but due to the temperature pole in welding process keyhole
Height, in follow-up cooling procedure, cooling is too fast, is easily caused the generation of crackle.
The content of the invention
In order to solve the above technical problems, the present invention proposes a kind of laser-electric arc for being particularly suited for military launcher answering
Welding method laser means are closed, after by the way of row LASER HEATING, cooling velocity is reduced, crackle is reduced and is produced tendency.
The complete technical scheme of the present invention includes：
A kind of method for laser welding of military launcher, it is characterised in that comprise the following steps：
1) finished edge at solder side；
2) welding procedure, using laser heat source, described 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 is used to continue to heat weld seam, reduces its cooling speed
Degree, the power of the leading laser beam is 8-10KW, and electric current is 250-270A, speed of welding 0.2-0.8m/min, rear row laser
The power of beam is 1-1.5KW, and electric current is 150-180A, pace 0.2-0.8m/min.
Described groove is the one kind in single V groove with root face, U-shaped groove or K shape grooves.
Leading laser beam uses arc composite heat source, electric arc to use tungsten electrode, 2~3mm of arc length, welding current simultaneously
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 is relative to the advantage of prior art：By the way of the irradiation of two beam laser, leading laser beam is used for
Welding, face of weld is melted and laser keyhole is formed, after leading laser beam is passed through, weld seam cooled and solidified, due in solidification
During weld seam cooling velocity is too fast that convergent force can be caused too strong, crack, rear row laser beam is heated to solidification zone, is prolonged
Delay its cooling velocity, reduce the tendency of crackle generation.
Specific embodiment
With reference to specific embodiment, the present invention will be further described.
Embodiment 1：
The finished edge at military launcher welding point；Using single V groove with root face, 23 ° of bevel angle, width of root face 3mm is blunt
Side gap 2mm, then using leading CO2Laser and rear row CO2Laser is welded, and leading laser beam is used in weld seam
Laser keyhole is formed, while using arc composite heat source, electric arc uses tungsten electrode, 2~3mm of arc length, welding current 100~
150A, rear row laser beam continues to heat weld seam after being used to weld, and reduces its cooling velocity, and the power of the leading laser beam is
10KW, electric current is 250A, speed of welding 0.3m/min, and the power of rear row laser beam is 1.5KW, and electric current is 160A, pace
It is identical with leading laser beam, it is spaced 3mm between leading laser beam and rear row laser beam.After leading laser beam is passed through, weld seam is cold
But solidify, because weld seam cooling velocity is too fast in process of setting convergent force can be caused too strong, crack, rear row laser beam pair
Solidification zone is heated, and delays its cooling velocity, reduces the tendency of crackle generation.
The above, is only presently preferred embodiments of the present invention, and not the present invention is imposed any restrictions, every according to the present invention
Any simple modification, change and equivalent structure change that technical spirit is made to above example, still fall within skill of the present invention
In the protection domain of art scheme.
Claims (4)
1. a kind of method for laser welding of military launcher, it is characterised in that comprise the following steps：
1) finished edge at solder side；
2) welding procedure, using laser heat source, described laser welding light beam includes leading laser beam and rear row laser beam, in advance
Laser beam, for forming laser keyhole in weld seam, rear row laser beam is used to continue to heat weld seam, reduces its cooling velocity, institute
The power of leading laser beam is stated for 8-10KW, electric current is 250-270A, speed of welding 0.2-0.8m/min, the work(of rear row laser beam
Rate is 1-1.5KW, and electric current is 150-180A, pace 0.2-0.8m/min.
2. the method for laser welding of military launcher as claimed in claim 1, it is characterised in that described groove is Y shape slope
One kind in mouth, U-shaped groove or K shape grooves.
3. the method for laser welding of military launcher as claimed in claim 1, it is characterised in that leading laser beam is used simultaneously
Arc composite heat source, electric arc uses tungsten electrode, 2~3mm of arc length, 100~150A of welding current, speed of welding 0.2-
0.8m/min, argon gas flow 12-18L/min.
4. the method for laser welding of military launcher as claimed in claim 1, it is characterised in that leading laser beam and rear row swash
0-5mm is spaced between light 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 true CN106735908A (en) | 2017-05-31 |
| CN106735908B 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) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100288738A1 (en) * | 2009-05-15 | 2010-11-18 | General Electric Company | Welding apparatus and method |
| CN102015193A (en) * | 2008-11-27 | 2011-04-13 | 松下电器产业株式会社 | Composite welding method and composite welding apparatus |
| CN103418916A (en) * | 2012-05-21 | 2013-12-04 | 通用电气公司 | Hybrid laser arc welding process and apparatus |
| CN104411439A (en) * | 2012-07-06 | 2015-03-11 | 林肯环球股份有限公司 | Method of and system for heating consumable during hot wire process using two laser beams |
-
2017
- 2017-01-05 CN CN201710008146.4A patent/CN106735908B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102015193A (en) * | 2008-11-27 | 2011-04-13 | 松下电器产业株式会社 | Composite welding method and composite welding apparatus |
| US20100288738A1 (en) * | 2009-05-15 | 2010-11-18 | General Electric Company | Welding apparatus and method |
| CN103418916A (en) * | 2012-05-21 | 2013-12-04 | 通用电气公司 | Hybrid laser arc welding process and apparatus |
| CN104411439A (en) * | 2012-07-06 | 2015-03-11 | 林肯环球股份有限公司 | Method of and system for heating consumable during hot wire process using two laser beams |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106735908B (en) | 2019-06-25 |
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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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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| 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 |