CN106513997A - Megawatt-grade high-speed rail accumulator box laser-arc composite welding method - Google Patents
Megawatt-grade high-speed rail accumulator box laser-arc composite welding method Download PDFInfo
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- CN106513997A CN106513997A CN201710008022.6A CN201710008022A CN106513997A CN 106513997 A CN106513997 A CN 106513997A CN 201710008022 A CN201710008022 A CN 201710008022A CN 106513997 A CN106513997 A CN 106513997A
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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)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Laser Beam Processing (AREA)
Abstract
The invention discloses a megawatt-grade high-speed rail accumulator box laser-arc composite welding method. Laser and arc are used as a composite heat source. Laser welding beams comprise the first laser beam and the second laser beam. The first laser beam and the second laser beam heat the surface of a weld joint from the left side and the right side correspondingly for welding, and coincide in the center part of the weld joint, so that the temperature of the center part of the weld joint is highest, the edge part and the center part form temperature gradient, and splashing is avoided; and the edge part is preheated, temperature difference in the subsequent cooling process is lowered, and tendency of cracks is reduced.
Description
Technical field
The invention belongs to materials processing technology field, more particularly, to a kind of high ferro battery box laser-arc hybrid welding in industry
Method.
Background technology
Battery box refer to accommodate set of cells casing, its primarily serve protect set of cells not collided, insulative water-proof and
The effect of battery radiating is helped, Laser-Arc Hybrid Welding is by the way of laser heat source, electric arc thermal source are compound, while effect
In the same Working position of workpiece, interacted by two thermals source and composite heat power supply is acted on workpiece, complete welding process.Swash
Optical-electronic arc composite welding is obtained a wide range of applications in the precision welding of the industries such as automobile, Aero-Space, ship, has height concurrently
Energy density, point to precisely, and arc-plasma high thermoelectricity conversion ratio, technical maturity the advantages of, but due to laser
Welding is to melt out to form laser keyhole in face of weld by laser, and the mobility of molten pool metal increases, and produces surge phenomenon, should
Easily there is spattering problem in process, and due to molten bath central temperature it is high, during solidification with weld edge at the temperature difference it is huge, pole holds
It is also easy to produce stress concentration and causes crackle, becomes a restriction Laser-Arc Hybrid Welding further wide variety of reason.
The content of the invention
For solve above-mentioned technical problem, the present invention propose one kind be particularly suited for high ferro battery box laser-electric arc be combined
Welding method laser means, by the way of the oblique irradiation of two beam laser, reduce splashing and stress, improve welding quality.
The complete technical scheme of the present invention includes：
A kind of high ferro battery box laser-arc hybrid welding in industry method, comprises the steps：
1) finished edge at the solder side；
2) welding procedure, powers up arc as composite heat power supply using laser, and described laser welding light beam includes first laser
Beam and second laser beam, first laser beam and second laser beam are welded from left and right sides heating face of weld respectively, described
Angle 30-45 ° between first laser beam and second laser beam, the oblique irradiation face of weld of difference, beam diameter scope are weld seam
Edge is to crossing weld centreline, but has not exceeded another side weld, i.e., first laser beam and second laser beam distinguish some
Irradiation left and right weld edge, while being formed about partially overlapping in weld centreline.
Described groove is the one kind in single V groove with root face, U-shaped groove or K shape grooves.
First laser beam and second laser beam power are 2-4KW, and electric current is 200-220A, and speed of welding is 0.2-0.8m/
min。
Electric arc adopts 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；
Advantage of the present invention relative to prior art be：By the way of the oblique irradiation of two beam laser, and in weld seam
Centre part partially overlaps so that weld seam middle body temperature highest, and marginal portion and middle body form thermograde, so
The generation of splashing is avoided, and edge is preheated, the temperature difference is reduced in follow-up cooling procedure, reduce crackle product
Raw tendency.
Specific embodiment
With reference to specific embodiment, the present invention will be further described.
Embodiment 1：
High ferro battery box finished edge at the solder side；Using single V groove with root face, 26 ° of bevel angle, width of root face 2mm, root face
Gap 1mm, subsequently adopts a CO2Laser instrument and the 2nd CO2Laser instrument is welded from the left and right sides along weld seam respectively, two beams
35 ° of laser angle, beam diameter 2mm, the marginal portion of beam at one side cross weld edge, and the edge of the other end is crossed in weld seam
Line, laser beam power are 2KW, and electric current is 220A, and speed of welding is 0.6m/min, due to oblique irradiation, photothermal laser during welding
Conversion ratio is reduced, thus the light beam for crossing weld edge can not melt workpiece, its temperature is increased, and in the range of weld seam
Beam area it is big, heat is more, and laser melts out to form laser keyhole in face of weld, at the same the heat for obtaining from weld edge to
Central authorities increase successively, and temperature is also raised successively, and the molten bath inner metal liquid in weld seam central authorities can not jump out toe of the weld, reduce splashing
Problem, while edge temperature rise, it is little with temperature subtractive in weld seam, also reduce in follow-up process of setting crackle generation
Tendency, electric arc heated adopts tungsten electrode, arc length 2.5mm, welding current 50A, speed of welding and laser gait of march phase
Together.
Advantage of the present invention relative to prior art be：By the way of the oblique irradiation of two beam laser, and in weld seam
Centre part partially overlaps so that weld seam middle body temperature highest, and marginal portion and middle body form thermograde, so
The generation of splashing is avoided, and edge is preheated, the temperature difference is reduced in follow-up cooling procedure, reduce crackle product
Raw tendency.
Embodiment 2：
Groove adopts V-butt, and angle is 30 °, and remaining parameter is same as Example 1.
The above, is only presently preferred embodiments of the present invention, 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 myriawatt level high ferro battery box laser-arc hybrid welding in industry method, it is characterised in that comprise the steps：
1) finished edge at the solder side；
2) welding procedure, using laser power up arc as composite heat power supply, described laser welding light beam include first laser beam and
Second laser beam, first laser beam and second laser beam are welded from left and right sides heating face of weld respectively, and described first
Angle 30-45 ° between laser beam and second laser beam, the oblique irradiation face of weld of difference, beam diameter scope are weld edge
To crossing weld centreline, but another side weld is had not exceeded, i.e., first laser beam and second laser beam distinguish some irradiation
Left and right weld edge, while being formed about partially overlapping in weld centreline.
2. myriawatt level high ferro battery box laser-arc hybrid welding in industry method as claimed in claim 1, it is characterised in that described
Groove be single V groove with root face, U-shaped groove or K shape grooves in one kind.
3. myriawatt level high ferro battery box laser-arc hybrid welding in industry method as claimed in claim 1, it is characterised in that first
Laser beam and second laser beam power are 2-4KW, and electric current is 200-220A, and speed of welding is 0.2-0.8m/min.
4. myriawatt level high ferro battery box laser-arc hybrid welding in industry method as claimed in claim 1, it is characterised in that electric arc
Using 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。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710008022.6A CN106513997B (en) | 2017-01-05 | 2017-01-05 | Laser-arc hybrid welding method for myriawatt-level high-speed rail-mounted electric bottle box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710008022.6A CN106513997B (en) | 2017-01-05 | 2017-01-05 | Laser-arc hybrid welding method for myriawatt-level high-speed rail-mounted electric bottle box |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106513997A true CN106513997A (en) | 2017-03-22 |
| CN106513997B CN106513997B (en) | 2020-10-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710008022.6A Active CN106513997B (en) | 2017-01-05 | 2017-01-05 | Laser-arc hybrid welding method for myriawatt-level high-speed rail-mounted electric bottle box |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109352180A (en) * | 2018-12-06 | 2019-02-19 | 哈尔滨工业大学 | A kind of compound sealing method of edge joint laser-electric arc of internal pressurization |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10113471A1 (en) * | 2001-03-19 | 2002-10-02 | Highyag Lasertechnologie Gmbh | Welding materials using a laser beam used in hybrid welding processes comprises directing two laser focussing points in the welding point or in the region of the melt produced around the welding point |
| JP2004001084A (en) * | 2002-03-28 | 2004-01-08 | Ishikawajima Harima Heavy Ind Co Ltd | Twin spotting laser welding method and equipment |
| CN102310289A (en) * | 2010-06-30 | 2012-01-11 | 通用电气公司 | Hybrid laser arc welding technology and equipment |
| JP2014004603A (en) * | 2012-06-22 | 2014-01-16 | Kobe Steel Ltd | Laser-arc composite welding method |
| CN104985327A (en) * | 2015-07-27 | 2015-10-21 | 哈尔滨工业大学 | Bifocus laser and InFocus arc hybrid welding method |
-
2017
- 2017-01-05 CN CN201710008022.6A patent/CN106513997B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10113471A1 (en) * | 2001-03-19 | 2002-10-02 | Highyag Lasertechnologie Gmbh | Welding materials using a laser beam used in hybrid welding processes comprises directing two laser focussing points in the welding point or in the region of the melt produced around the welding point |
| JP2004001084A (en) * | 2002-03-28 | 2004-01-08 | Ishikawajima Harima Heavy Ind Co Ltd | Twin spotting laser welding method and equipment |
| CN102310289A (en) * | 2010-06-30 | 2012-01-11 | 通用电气公司 | Hybrid laser arc welding technology and equipment |
| JP2014004603A (en) * | 2012-06-22 | 2014-01-16 | Kobe Steel Ltd | Laser-arc composite welding method |
| CN104985327A (en) * | 2015-07-27 | 2015-10-21 | 哈尔滨工业大学 | Bifocus laser and InFocus arc hybrid welding method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109352180A (en) * | 2018-12-06 | 2019-02-19 | 哈尔滨工业大学 | A kind of compound sealing method of edge joint laser-electric arc of internal pressurization |
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| Publication number | Publication date |
|---|---|
| CN106513997B (en) | 2020-10-27 |
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Address after: 266000 South Head of Huiying Street, Jiaozhou Economic and Technological Development Zone, Qingdao City, 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 General Research Institute of Mechanical Science |
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Address after: 266000 south head of Huiying street, Jiaozhou economic and Technological Development Zone, Qingdao City, 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, Qingdao City, Shandong Province Patentee before: Qingdao Branch Co., Ltd. of Mechanical Science Research Institute |