CN106271069A - A kind of rustless steel and the method for laser welding of aluminium alloy - Google Patents
A kind of rustless steel and the method for laser welding of aluminium alloy Download PDFInfo
- Publication number
- CN106271069A CN106271069A CN201610786108.7A CN201610786108A CN106271069A CN 106271069 A CN106271069 A CN 106271069A CN 201610786108 A CN201610786108 A CN 201610786108A CN 106271069 A CN106271069 A CN 106271069A
- Authority
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- China
- Prior art keywords
- laser
- welding
- piece
- stainless steel
- rustless steel
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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
-
- 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
- B23K26/323—Bonding taking account of the properties of the material involved involving parts made of dissimilar metallic material
-
- 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)
Abstract
The invention discloses the method for laser welding of a kind of rustless steel and aluminium alloy, its process is: stainless steel work-piece and Al alloy parts to tabular to be welded carry out process and make its surface without any impurity and be dried respectively, the stainless steel work-piece processed and Al alloy parts are fitted tightly and is stacked together, use nanosecond infrared laser Output of laser and along welding track scanning stainless steel work-piece or Al alloy parts surface, it welded, scanned stainless steel work-piece or the thickness of Al alloy parts are 0.05 0.5mm, during welding, the laser vertical of nanosecond infrared laser output is in scanned stainless steel work-piece or Al alloy parts surface.Method for laser welding of the present invention can effectively suppress the generation of intermetallic compound at rustless steel and aluminum alloy joint, connection reliability is high, and efficiency is high simultaneously, solves the difficult problem that existing weld strength is the highest, can replace that glue is bonding or machine riveting, applied range comprehensively.
Description
Technical field
The invention belongs to laser welding technology field, be specifically related to the method for laser welding of a kind of rustless steel and aluminium alloy.
Background technology
Along with electronics industry develops rapidly, the connection requirement of aluminum-rustless steel steel foreign material gets more and more.But aluminum, no
The focus of the always connection area of the welding between rust steel and difficulties.Main difficulty is: one be postwelding bi-material it
Between can generate intermetallic compound, reduce weld strength；Two is owing to aluminum alloy surface exists fine and close oxide-film, hinders
The combination of foreign material.
The method that aluminum-stainless steel dissimilar material connects main employing at present is soldering, molten soldering, friction welding (FW) and machine
Tool method of attachment, but the welding line joint intensity of these methods welding is the most not ideal enough, and production efficiency is low, it is impossible to meet electricity
The production requirement of sub-producer.Such as patent " aluminium alloy and the 1Cr18N stainless friction stir welding method of i 9Ti and special stir
Mix head ", China, publication number: 101972891A；Patent " a kind of containing aluminum-steel foreign material thermal compression welding method ", China, open
Number: 103143831A.
Currently also there is employing tradition Nd:YAG laser pulse that stainless sheet steel and aluminum alloy plate materials carry out spot welding overlap joint examination
Testing, by optimizing technological design, but fusion area yet suffers from intermetallic compound, and thickness is about 5 microns, and 3 solder joints draw
Stretching shearing force is 75.2N, and the requirement of strength of Most electronic product inner member is all higher than the result of this experiment, the most not
Actual demand can be met.
Summary of the invention
The purpose of the present invention is contemplated to solve the deficiency that above-mentioned background technology exists, it is provided that a kind of connection is reliable, efficiency
High rustless steel and the method for laser welding of aluminium alloy.
The technical solution used in the present invention is: a kind of rustless steel and the method for laser welding of aluminium alloy, respectively to be welded
The stainless steel work-piece of tabular and Al alloy parts carry out process and make its surface without any impurity and be dried, stainless by processed
Steel workpiece and Al alloy parts fit tightly and are stacked together, and use nanosecond infrared laser Output of laser and sweep along welding track
Retouch stainless steel work-piece or it is welded by Al alloy parts surface, scanned stainless steel work-piece or the thickness of Al alloy parts
For 0.05-0.5mm, during welding, the laser vertical of nanosecond infrared laser output is in scanned stainless steel work-piece or aluminium alloy work
Part surface.
Further, the process processed stainless steel work-piece is: first use sand paper by the dirt on stainless steel work-piece surface
Dye thing polishing is removed, and is then positioned in cleanout fluid by stainless steel work-piece and carries out ultrasonic cleaning 10-20 minute, removes rustless steel work
Part surface impurity, finally takes out and is dried.
Further, the process processed Al alloy parts is: is positioned in cleanout fluid by Al alloy parts and carries out
Ultrasonic cleaning 10-20 minute, removes Al alloy parts surface impurity, then takes out dry.
Further, described cleanout fluid is ethanol or deionized water.
Further, using frock clamp stainless steel work-piece and Al alloy parts to be clamped makes it fit tightly.
Further, described nanosecond infrared laser mean power of Output of laser when welding be 50-100W, wavelength be
1059-1065nm, single pulse energy are 0.1-1.5mJ, pulse width is 10-500ns, rate of scanning is 25-500kHz, scanning
Speed is 10-200mm/s.
Further, the welding track on scanning stainless steel work-piece or Al alloy parts surface is helix or grid lines, spiral shell
Spacing between spin line or grid lines center line and line is 0.05-0.3mm.
Further, after having welded, use nanosecond infrared laser, along welding track, solder side is carried out laser scanning,
Remove welding residue.
Further, described nanosecond infrared laser mean power of Output of laser when removing welding residue is 30-
70W, rate of scanning are 70-1000kHz, scanning speed is 500-2000mm/s.
Method for laser welding of the present invention can effectively suppress the generation of intermetallic compound at rustless steel and aluminum alloy joint,
Connection reliability is high, and efficiency is high simultaneously, solves the difficult problem that existing weld strength is the highest, can replace comprehensively glue bonding or
Machine riveting, in the connection of the inner member of electronic product, range of application is very big, promotes the life of whole electronic product inner member
Product level.
Accompanying drawing explanation
Fig. 1 be welding track of the present invention be helix schematic diagram.
Fig. 2 be welding track of the present invention be grid lines schematic diagram.
Fig. 3 is that the present invention has welded rear product generalized section.
Detailed description of the invention
The present invention is described in further detail with specific embodiment below in conjunction with the accompanying drawings, it is simple to is well understood to this
Bright, but they do not constitute restriction to the present invention.
Rustless steel of the present invention with the process of the method for laser welding of aluminium alloy is: the rustless steel to tabular to be welded respectively
Workpiece and Al alloy parts carry out process makes its surface without any impurity and be dried, by the stainless steel work-piece processed and aluminium alloy
Workpiece fits tightly and is stacked together, use nanosecond infrared laser Output of laser and along welding track scanning stainless steel work-piece or
It is welded by Al alloy parts surface, and during welding, the laser vertical of nanosecond infrared laser output is in scanned rustless steel
Workpiece or Al alloy parts surface.
The present embodiment is suitable for relatively thin welding material, therefore the stainless steel work-piece to nanosecond infrared laser Output of laser scanning
Or the thickness of Al alloy parts is defined to 0.05-0.5mm, i.e. limit the thickness of a material of welding, the one side to non-solder
Material thickness does not do requirement.The thickness of the stainless steel work-piece (sus304) that the present embodiment uses is 0.2mm, Al alloy parts (board
Numbers 6061) thickness is 0.3mm, and both length and width are 50mm and 30mm.Stainless steel work-piece and Al alloy parts
Thickness is all in the range of limiting, therefore can scan any of which material during welding.Use when the present embodiment welds
Nanosecond the mean power of infrared laser Output of laser be 50-100W, wavelength be 1059-1065nm, single pulse energy be 0.1-
1.5mJ, pulse width are 10-500ns, rate of scanning is 25-500kHz, scanning speed is 10-200mm/s.Welding uses
Motion is scanning galvanometer, nanosecond infrared laser output laser after condenser lens, act on material surface.
Specifically comprising the following steps that of welding
1, with relatively fine sandpaper, the pollutant polishing on stainless steel work-piece surface is removed before welding, then ultrasonic in cleanout fluid
Clean 10-20 minute, remove the greasy dirt impurity on surface, keep the clean of material surface and without any impurity, finally take out and be dried.
Again Al alloy parts is positioned in cleanout fluid and carries out ultrasonic cleaning 10-20 minute, remove Al alloy parts surface impurity, finally
Take out and be dried.The cleanout fluid wherein used can be ethanol or deionized water, and the present embodiment is preferably alcoholic solution.
2, after stainless steel work-piece and Al alloy parts material have processed, frock clamp is used to be closed with aluminum by stainless steel work-piece
Gold Workpiece clamping makes it fit tightly, and reduces gap between the two, it is to avoid excesssive gap between materials at two layers, after causing welding
Produce rosin joint.
3, nanosecond infrared laser is used to weld as light source, method particularly includes: nanosecond infrared laser output
Laser is along certain welding track scanning stainless steel work-piece surface (can also scan aluminum alloy surface), in scanning process, at high frequency
Under the continuous action of rate laser beam, stainless steel work-piece and the surface with the Al alloy parts of stainless steel work-piece laminating reach fusing
State, now the upper strata stainless steel material of molten state can embed inside lower floor's aluminum alloy materials, meanwhile, the aluminium alloy material of lower floor
Material part is upper moves, and embeds inside the stainless steel material of upper strata, and both form " riveting " structure, and welding completes.Red by optimizing nanosecond
The technological parameter of outer laser instrument Output of laser can obtain optimal intensity.Present invention nanosecond infrared laser Output of laser excellent
Radix Ginseng selection number be power be 70W, frequency be 200kHz, speed be 100mm/s.
The welding track of above-mentioned laser scanning is generally helix or grid lines, as shown in Figure 1 and Figure 2, helix or grid
Spacing L between line center line and line is 0.05-0.3mm, preferably 0.1mm.The scope of scanning welding can be according to product needed
It is adjusted, can be circular or square or other shapes.
4, after having welded, butt welding point surface is modified, and can obtain preferable solder joint outward appearance, and operating process is: adopt
Along welding track, solder side is carried out laser scanning with the nanosecond infrared laser of smaller power, remove welding residue, make solder joint
Appearance is more smooth.Nanosecond infrared laser remove welding residue time Output of laser mean power be 30-70W, sweep
Retouch frequency be 70-1000kHz, scanning speed be 500-2000mm/s.Preferably mean power be 70W, frequency be 500kHz, scanning
Speed is 2000mm/s.
5, through experimental test: after having welded, the shearing force of one solder joint of test, rustless steel and aluminum alloy lapped joint
Tensile shear power is 105.2N (3 solder joints, dot spacing 1mm), the analysis of butt welding point tangent plane, is cut by solder joint, sanding and polishing, changes
Learning corrosion, obtain welding sectional drawing, as shown in fig. 3, it was found that the rustless steel 1 on upper strata embeds the aluminium alloy 2 of lower floor, the aluminum of lower floor closes
Gold 2 embeds upper strata rustless steel 1, forms the solder joint 3 of " riveting " formula, adds weld strength, it is possible to meet Most electronic device
Prescription to rustless steel Yu aluminium alloy jointing in part inner member.
The content not being described in detail in this specification belongs to prior art known to professional and technical personnel in the field.
Claims (9)
1. a rustless steel and the method for laser welding of aluminium alloy, it is characterised in that: the rustless steel to tabular to be welded respectively
Workpiece and Al alloy parts carry out process makes its surface without any impurity and be dried, by the stainless steel work-piece processed and aluminium alloy
Workpiece fits tightly and is stacked together, use nanosecond infrared laser Output of laser and along welding track scanning stainless steel work-piece or
It is welded by Al alloy parts surface, and scanned stainless steel work-piece or the thickness of Al alloy parts are 0.05-0.5mm,
During welding, the laser vertical of nanosecond infrared laser output is in scanned stainless steel work-piece or Al alloy parts surface.
A kind of rustless steel the most according to claim 1 and the method for laser welding of aluminium alloy, it is characterised in that: to rustless steel
The process that workpiece carries out processing is: first uses sand paper to be polished by the pollutant on stainless steel work-piece surface and removes, then by rustless steel
Workpiece is positioned in cleanout fluid and carries out ultrasonic cleaning 10-20 minute, removes stainless steel work-piece surface impurity, finally takes out and be dried.
A kind of rustless steel the most according to claim 1 and the method for laser welding of aluminium alloy, it is characterised in that: to aluminium alloy
The process that workpiece carries out processing is: is positioned in cleanout fluid by Al alloy parts and carries out ultrasonic cleaning 10-20 minute, removes aluminum and closes
Metal working part surface impurity, then takes out dry.
4. according to the method for laser welding of a kind of rustless steel described in Claims 2 or 3 Yu aluminium alloy, it is characterised in that: described
Cleanout fluid is ethanol or deionized water.
A kind of rustless steel the most according to claim 1 and the method for laser welding of aluminium alloy, it is characterised in that: use frock
Stainless steel work-piece and Al alloy parts are clamped and make it fit tightly by fixture.
A kind of rustless steel the most according to claim 1 and the method for laser welding of aluminium alloy, it is characterised in that: described nanosecond
Infrared laser mean power of Output of laser when welding is 50-100W, wavelength is 1059-1065nm, single pulse energy is
0.1-1.5mJ, pulse width are 10-500ns, rate of scanning is 25-500kHz, scanning speed is 10-200mm/s.
A kind of rustless steel the most according to claim 1 and the method for laser welding of aluminium alloy, it is characterised in that: scan stainless
The welding track on steel workpiece or Al alloy parts surface is helix or grid lines, between helix or grid lines center line and line
Spacing is 0.05-0.3mm.
A kind of rustless steel the most according to claim 1 and the method for laser welding of aluminium alloy, it is characterised in that: weld
After, use nanosecond infrared laser, along welding track, solder side is carried out laser scanning, remove welding residue.
A kind of rustless steel the most according to claim 8 and the method for laser welding of aluminium alloy, it is characterised in that: described nanosecond
Infrared laser mean power of Output of laser when removing welding residue is 30-70W, rate of scanning is 70-1000kHz, sweeps
Retouching speed is 500-2000mm/s.
Priority Applications (1)
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|---|---|---|---|
| CN201610786108.7A CN106271069A (en) | 2016-08-31 | 2016-08-31 | A kind of rustless steel and the method for laser welding of aluminium alloy |
Applications Claiming Priority (1)
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|---|---|---|---|
| CN201610786108.7A CN106271069A (en) | 2016-08-31 | 2016-08-31 | A kind of rustless steel and the method for laser welding of aluminium alloy |
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| CN201610786108.7A Pending CN106271069A (en) | 2016-08-31 | 2016-08-31 | A kind of rustless steel and the method for laser welding of aluminium alloy |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106735894A (en) * | 2016-12-13 | 2017-05-31 | 大族激光科技产业集团股份有限公司 | A kind of dissimilar metal micro-bonding method |
| 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 |
| CN107069070A (en) * | 2017-04-14 | 2017-08-18 | 重庆创元新能源科技有限责任公司 | A kind of nanosecond laser is welded on the application process in soft package lithium battery |
| CN107297570A (en) * | 2017-06-29 | 2017-10-27 | 大族激光科技产业集团股份有限公司 | A kind of cylindrical battery negative pole and connection sheet welding method |
| CN107598378A (en) * | 2017-10-18 | 2018-01-19 | 大族激光科技产业集团股份有限公司 | The method for laser welding of plate and frame in a kind of mobile phone |
| CN109079324A (en) * | 2018-09-30 | 2018-12-25 | 大族激光科技产业集团股份有限公司 | The method for laser welding of copper-nickel alloy |
| CN109967874A (en) * | 2017-12-27 | 2019-07-05 | 大族激光科技产业集团股份有限公司 | A kind of welding method of aluminium wire |
| CN109996642A (en) * | 2017-10-30 | 2019-07-09 | 松下知识产权经营株式会社 | The welding structure and welding method of metal component |
| CN110153557A (en) * | 2019-05-22 | 2019-08-23 | 华中科技大学无锡研究院 | A kind of method for laser welding homogenizing Al-Mg line aluminium alloy seam organization |
| CN110899977A (en) * | 2018-08-28 | 2020-03-24 | 大族激光科技产业集团股份有限公司 | Method for improving mechanical property of copper-aluminum alloy welding force |
| CN111331254A (en) * | 2020-03-13 | 2020-06-26 | 天津荣盛盟固利新能源科技有限公司 | Welding method and application of multilayer dissimilar metal structure |
| CN112643203A (en) * | 2020-11-18 | 2021-04-13 | 欣旺达电动汽车电池有限公司 | Workpiece welding method, electrode assembly, single battery and electric equipment |
| CN113000942A (en) * | 2021-03-01 | 2021-06-22 | 马鞍山市威马机械设备有限责任公司 | Steel-inlaid blade, and welding surface processing method and preparation method thereof |
| CN113941775A (en) * | 2021-11-16 | 2022-01-18 | 天津市捷威动力工业有限公司 | Battery module dissimilar metal shell and welding method thereof |
| CN114054957A (en) * | 2021-07-06 | 2022-02-18 | 武汉帝尔激光科技股份有限公司 | Laser welding method and system for dissimilar metal films |
| CN114985924A (en) * | 2022-05-19 | 2022-09-02 | 深圳泰德激光技术股份有限公司 | Thin material laser welding method and component |
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Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106735894B (en) * | 2016-12-13 | 2018-12-28 | 大族激光科技产业集团股份有限公司 | A kind of dissimilar metal micro-bonding method |
| CN106735894A (en) * | 2016-12-13 | 2017-05-31 | 大族激光科技产业集团股份有限公司 | A kind of dissimilar metal micro-bonding method |
| 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 |
| CN107069070A (en) * | 2017-04-14 | 2017-08-18 | 重庆创元新能源科技有限责任公司 | A kind of nanosecond laser is welded on the application process in soft package lithium battery |
| CN107297570A (en) * | 2017-06-29 | 2017-10-27 | 大族激光科技产业集团股份有限公司 | A kind of cylindrical battery negative pole and connection sheet welding method |
| CN107598378A (en) * | 2017-10-18 | 2018-01-19 | 大族激光科技产业集团股份有限公司 | The method for laser welding of plate and frame in a kind of mobile phone |
| CN109996642A (en) * | 2017-10-30 | 2019-07-09 | 松下知识产权经营株式会社 | The welding structure and welding method of metal component |
| CN109996642B (en) * | 2017-10-30 | 2021-11-26 | 松下知识产权经营株式会社 | Welding structure and welding method for metal member |
| CN109967874A (en) * | 2017-12-27 | 2019-07-05 | 大族激光科技产业集团股份有限公司 | A kind of welding method of aluminium wire |
| CN109967874B (en) * | 2017-12-27 | 2021-07-30 | 大族激光科技产业集团股份有限公司 | Welding method of aluminum wire |
| CN110899977A (en) * | 2018-08-28 | 2020-03-24 | 大族激光科技产业集团股份有限公司 | Method for improving mechanical property of copper-aluminum alloy welding force |
| CN109079324A (en) * | 2018-09-30 | 2018-12-25 | 大族激光科技产业集团股份有限公司 | The method for laser welding of copper-nickel alloy |
| CN110153557A (en) * | 2019-05-22 | 2019-08-23 | 华中科技大学无锡研究院 | A kind of method for laser welding homogenizing Al-Mg line aluminium alloy seam organization |
| CN111331254A (en) * | 2020-03-13 | 2020-06-26 | 天津荣盛盟固利新能源科技有限公司 | Welding method and application of multilayer dissimilar metal structure |
| CN112643203A (en) * | 2020-11-18 | 2021-04-13 | 欣旺达电动汽车电池有限公司 | Workpiece welding method, electrode assembly, single battery and electric equipment |
| CN113000942A (en) * | 2021-03-01 | 2021-06-22 | 马鞍山市威马机械设备有限责任公司 | Steel-inlaid blade, and welding surface processing method and preparation method thereof |
| CN114054957A (en) * | 2021-07-06 | 2022-02-18 | 武汉帝尔激光科技股份有限公司 | Laser welding method and system for dissimilar metal films |
| CN113941775A (en) * | 2021-11-16 | 2022-01-18 | 天津市捷威动力工业有限公司 | Battery module dissimilar metal shell and welding method thereof |
| CN114985924A (en) * | 2022-05-19 | 2022-09-02 | 深圳泰德激光技术股份有限公司 | Thin material laser welding method and component |
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