CN103658985B - A kind of welding non-coating stainless steel plate in laser mode - Google Patents
A kind of welding non-coating stainless steel plate in laser mode Download PDFInfo
- Publication number
- CN103658985B CN103658985B CN201210339457.6A CN201210339457A CN103658985B CN 103658985 B CN103658985 B CN 103658985B CN 201210339457 A CN201210339457 A CN 201210339457A CN 103658985 B CN103658985 B CN 103658985B
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- China
- Prior art keywords
- welding
- sheet material
- stainless steel
- protecting film
- lower floor
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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
- B23K26/18—Working by laser beam, e.g. welding, cutting or boring using absorbing layers on the workpiece, e.g. for marking or protecting purposes
-
- 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
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/50—Inorganic material, e.g. metals, not provided for in B23K2103/02 – B23K2103/26
-
- 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
- B23K26/20—Bonding
- B23K26/32—Bonding taking account of the properties of the material involved
-
- 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
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/006—Vehicles
-
- 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
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/18—Sheet panels
- B23K2101/185—Tailored blanks
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mechanical Engineering (AREA)
- Plasma & Fusion (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Laser Beam Processing (AREA)
Abstract
The present invention relates to a kind of welding non-coating stainless steel plate in laser mode; by upper and lower two-layer sheet material superposition; the exposed surface of described lower floor sheet material arranges layer protecting film, makes Laser Welding light beam from top plate through reaching lower plywood certain depth, it is achieved the connection between two-ply up and down.The present invention is directed to rail vehicle without the product requirement of application stainless steel car body and process characteristic, on the premise of assembly precision meets laser welding requirement, welding technique is selected in terms of controlling presentation quality and ensureing joint bonding strength two, by controlling bonding power, the welding conditions such as speed of welding control the certain molten width of weld seam and fusion penetration, weld by taking to expose wallboard band protecting film, the special process such as workpiece lower surface pad aluminium alloy backing plate ensure that weld seam is not oxidized, welding heat is more concentrated, not only ensured weld strength but also protected to expose back of weld without substantially deformation and variable color.
Description
Technical field
The present invention relates to a kind of corrosion resistant plate method for laser welding, have exposed surface commercial requirements particularly to one
Corrosion resistant plate method for laser welding.
Background technology
In the rail vehicles such as subway, light rail, EMUs, the most progressively car body of promotion and application stainless steel material,
Stainless steel has higher intensity and a corrosion resistance, and have lightweight, maintenance cost is low, attractive in appearance, appearance
Face is without features such as applications.In prior art, with wallboard, welding between component is strengthened for rustless steel wallboard and all adopts
Use laser welding process.As it is shown in figure 1, be traditional welding method schematic diagram, use traditional laser welding work
Skill, although ensure that the bonding strength of joint, speed of welding is also very fast, but after welding, the outer surface of wallboard
Welding deformation is relatively big, presents the phenomenon of oxidation tint because of high-temperature heating simultaneously, uses without coating process for outer surface
Stainless steel car body, its exposed surface has higher commercial requirements, owing to the deformation that causes of welding and variable color are existing
As its appearance all can be directly affected.
Summary of the invention
Present invention is primarily aimed at solution the problems referred to above and deficiency, it is provided that a kind of without coated stainless steel sheet laser welding
Method, makes corrosion resistant plate exposed surface without substantially deformation and variable color, reaches the appearance of commercial requirements.
For achieving the above object, the technical scheme is that
A kind of welding non-coating stainless steel plate in laser mode, by upper and lower two-layer sheet material superposition, make Laser Welding light beam from
Top plate is through reaching lower plywood certain depth, it is achieved the connection between two-ply up and down, at described lower floor sheet material
Paste layer protecting film by acrylic acid gum on exposed surface, re-lay one layer of aluminum in the lower section that described protection is touched and close
Gold backing plate, the depth of penetration of described lower floor sheet material is (0.2-0.4) t, and wherein t is lower floor's sheet metal thickness.
Further, described protecting film is PVC.
Further, described protecting film is paved with the outer surface of whole sheet material, or described protecting film is only laid on the position of weld seam
Put.
Further, described protecting film passes through the glue outer surface at described sheet material.
Further, the thickness of described protecting film is 0.05-0.3mm.
Further, the thickness of described aluminium alloy backing plate is 5-30mm.
Further, the thickness of described aluminium alloy backing plate is 20mm.
Further, described aluminium alloy backing plate is paved with the outer surface of whole described lower floor sheet material, or described aluminium alloy backing plate
Only it is laid on the position of weld seam.
To sum up content, a kind of welding non-coating stainless steel plate in laser mode of the present invention, compared with prior art,
Have the advantage that
(1) the present invention is directed to rail vehicle without the product requirement of application stainless steel car body and process characteristic, during welding,
Layer protecting film is pasted, it is achieved the isolation of surface of the work and air in lower plywood back, it is ensured that weld seam is not oxidized,
Neither affecting welding quality and ensure weld strength, ensure again weld appearance light, commercial qualtity is ensured.
(2) at lower plywood back pad aluminium alloy plate, the feature protection workpiece table that aluminum alloy materials hardness is moderate is utilized
Face, it is ensured that workpiece exposed surface welding deformation is less and is not scratched, and utilizes the spy that aluminum alloy materials thermal conductivity is higher
Welding heat unnecessary for the back side is taken away by point, alleviates back of weld sealing wire, has not only ensured weld strength but also protected to expose
Back of weld is without substantially deformation and variable color, thus reaches good appearance.
Accompanying drawing explanation
Fig. 1 is traditional welding method schematic diagram；
Fig. 2 welding method of the present invention schematic diagram.
As depicted in figs. 1 and 2, upper strata sheet material 1, lower floor's sheet material 2, protecting film 3, aluminium alloy backing plate 4, lower floor
The outer surface 5 of sheet material.
Detailed description of the invention
With detailed description of the invention, the present invention is described in further detail below in conjunction with the accompanying drawings:
As in figure 2 it is shown, a kind of welding non-coating stainless steel plate in laser mode of the present invention, it is for rustless steel car
Weight external wall plate and Side fascia strengthen being welded to connect between component.Wherein, upper strata sheet material 1 refers to the enhancing structure on Side fascia
Part, such as support beam etc., lower floor's sheet material 2 refers to stainless Side fascia, and the back side of Side fascia is the outer surface needing to expose
5, outer surface 5 does not do application and processes, and therefore the back side of Side fascia needs to meet higher commercialization appearance requirement, on
Laminate material 1 is overlapped on the front of lower floor's sheet material 2 and is welded to connect.
Before welding, pasting layer protecting film 3 on the outer surface 5 that lower floor's sheet material 2 exposes, protecting film 3 realizes workpiece table
Face and the isolation of air.Paste layer protecting film 3 and do not interfere with welding quality, it is ensured that weld strength, and,
Owing to protecting film 3 is by surface of the work and air insulated so that the weld seam on the outer surface 5 of lower floor's sheet material 2 will not be by oxygen
Change, and then can ensure that weld appearance light, meet Side fascia commercialization appearance requirement, after welding completion, will protect
Cuticula 3 removes.
Protecting film 3 preferably employs the thin film of PVC material, is entered by acrylic acid gum between protecting film 3 and lower floor's sheet material 2
Row laminating, the thickness of protecting film 3 is difficult to the thinnest, the thinnest effect not having protection, but the thickest can increase material cost,
Confirming through great many of experiments, the thickness of protecting film 3 preferably selects 0.05-0.3mm, in the premise ensureing its protective effect
Under, considering from material cost perspective, the thickness optimum selection of protecting film 3 is 0.1mm.
Protecting film 3 has two ways to be pasted onto on lower floor's sheet material 2, and a kind of is that protecting film 3 is paved with whole lower floor sheet material 2
Outer surface 5, the protected effect of this mode is optimum；Another kind is only to be laid on by the protecting film 3 with one fixed width
It is positioned at the position of weld seam.
Before welding, the lower section touching 3 in protection re-lays one layer of aluminium alloy backing plate 4, utilizes aluminum alloy materials hardness moderate
Feature protection surface of the work, it is ensured that outer surface of workpiece 5 welding deformation is less and is not scratched, and utilizes aluminium alloy material
Welding heat unnecessary for the back side is taken away by the feature that material thermal conductivity is higher, it is ensured that welding heat is more concentrated, and alleviates weldering
Seam back side sealing wire, thus reach good appearance.
The thickness of aluminium alloy backing plate 4 is chosen as 5-30mm, in the present embodiment, it is preferred to use is about aluminum thick for 20mm and closes
Gold backing plate 4.Aluminium alloy backing plate 4 can be paved with below the outer surface 5 of whole lower floor sheet material 2, it is also possible to is only laid on weldering
The position of seam.For ensureing the good radiating effect of aluminium alloy backing plate 4, in the present embodiment, preferably aluminium alloy backing plate 4
Overall specification is identical with lower floor's sheet material 2 size to be welded.
During welding, lower floor's sheet material 2 of coated with protective film 3 is laid on aluminium alloy backing plate 4, upper strata sheet material 2 is overlapped
At the upper surface of lower floor's sheet material 2, fix with hold down gag, make Laser Welding light beam from upper strata sheet material 1 through reaching lower floor
Sheet material 2 certain depth, and then complete the connection between upper strata sheet material 1 and lower floor's sheet material 2.
By controlling the welding parameters such as the bonding power of laser welding setting, speed of welding, it is ensured that there is lower floor's sheet material 2
The depth of penetration d of the Laser Welding lap joint that exposed surface requires is (0.15-0.4) t, and wherein, t is lower floor's sheet material
The thickness of 2, molten wide S is between 0.6-1mm, thus has both ensured strength of welded joint, ensures again to expose joint good
Commercialization effect.Such as: 0.8+2.0 partial penetrated lap joint, bonding power exists in 1700W, speed of welding
4.0m/min, the fusion penetration d of corresponding joints are 0.4mm, and molten wide S is 0.6mm；And bonding power is in 1900W, welding speed
Degree is 0.8mm at 3.5m/min, the fusion penetration d of corresponding joints, and molten wide S is 1.0mm.
As it has been described above, combine the plan content given by accompanying drawing, similar technical scheme can be derived.In every case it is
Without departing from the content of technical solution of the present invention, any letter above example made according to the technical spirit of the present invention
Single amendment, equivalent variations and modification, all still fall within the range of technical solution of the present invention.
Claims (4)
1. a welding non-coating stainless steel plate in laser mode, it is characterised in that: by upper and lower two-layer sheet material superposition,
Make Laser Welding light beam from top plate through reaching lower plywood certain depth, it is achieved the connection between two-ply up and down,
Layer protecting film is pasted by acrylic acid gum, after welding completion, by described on the exposed surface of described lower floor sheet material
Protecting film removes, and re-lays one layer of aluminium alloy backing plate in the lower section that described protection is touched, and the penetration of described lower floor sheet material is deep
Degree is 0.4t, and wherein t is lower floor's sheet metal thickness, and the thickness of described protecting film is 0.1mm, described aluminium alloy backing plate
Thickness is 20mm.
Welding non-coating stainless steel plate in laser mode the most according to claim 1, it is characterised in that: described guarantor
Cuticula is PVC.
Welding non-coating stainless steel plate in laser mode the most according to claim 2, it is characterised in that: described guarantor
Cuticula is paved with the outer surface of whole sheet material, or described protecting film is only laid on the position of weld seam.
Welding non-coating stainless steel plate in laser mode the most according to claim 1, it is characterised in that: described aluminum
Alloy backing plate is paved with the outer surface of whole described lower floor sheet material, or described aluminium alloy backing plate is only laid on the position of weld seam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210339457.6A CN103658985B (en) | 2012-09-13 | 2012-09-13 | A kind of welding non-coating stainless steel plate in laser mode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210339457.6A CN103658985B (en) | 2012-09-13 | 2012-09-13 | A kind of welding non-coating stainless steel plate in laser mode |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103658985A CN103658985A (en) | 2014-03-26 |
| CN103658985B true CN103658985B (en) | 2016-12-21 |
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| CN201210339457.6A Active CN103658985B (en) | 2012-09-13 | 2012-09-13 | A kind of welding non-coating stainless steel plate in laser mode |
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| CN106937501A (en) * | 2017-03-30 | 2017-07-07 | 东莞劲胜精密组件股份有限公司 | A kind of use for electronic products combined housing and preparation method thereof |
| CN108907460A (en) * | 2018-07-09 | 2018-11-30 | 奇鋐科技股份有限公司 | Hot cell manufacturing method |
| CN110961788B (en) * | 2019-11-12 | 2020-11-20 | 中国国家铁路集团有限公司 | Method for enhancing corrosion resistance of austenitic stainless steel laser welding seam |
| CN111805087B (en) * | 2020-05-20 | 2022-02-15 | 中车青岛四方机车车辆股份有限公司 | Double-beam laser welding method and welding device |
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| JPS60133970A (en) * | 1983-10-27 | 1985-07-17 | Mitsubishi Heavy Ind Ltd | Production of adsorption panel for low-temperature service |
| JP2007038241A (en) * | 2005-08-02 | 2007-02-15 | Nisshin Steel Co Ltd | Welding method for galvanized steel sheet |
| JP2010247232A (en) * | 2009-03-26 | 2010-11-04 | Kobe Steel Ltd | Method for manufacturing welded structure |
| CN101811228A (en) * | 2010-03-31 | 2010-08-25 | 深圳市大族激光科技股份有限公司 | Laser spot welding method and laser welding products |
| CN102500907A (en) * | 2011-10-26 | 2012-06-20 | 首都航天机械公司 | Method for precise control of diffusion welding / stop welding region |
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| CB02 | Change of applicant information |
Address after: Jihongtan town Chengyang District Shandong city Qingdao province Jinhong road 266111 No. 88 Applicant after: CRRC QINGDAO SIFANG CO., LTD. Address before: Jihongtan town Chengyang District Shandong city Qingdao province Jinhong road 266111 No. 88 Applicant before: CSR Qingdao Sifang Locomotive and Rolling Stock Co., Ltd. |
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