CN107627026A - A kind of method for laser welding of aluminium alloy - Google Patents
A kind of method for laser welding of aluminium alloy Download PDFInfo
- Publication number
- CN107627026A CN107627026A CN201710973247.5A CN201710973247A CN107627026A CN 107627026 A CN107627026 A CN 107627026A CN 201710973247 A CN201710973247 A CN 201710973247A CN 107627026 A CN107627026 A CN 107627026A
- Authority
- CN
- China
- Prior art keywords
- welding
- laser
- semiconductor laser
- optical fiber
- aluminium alloy
- 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.)
- Pending
Links
Landscapes
- Laser Beam Processing (AREA)
Abstract
The present invention proposes a kind of method for laser welding of aluminium alloy, implements butt welding to Al-alloy parts using semiconductor laser.Wherein, both can be seamless or apertured between the docking site of two pieces Al-alloy parts.Welding quality can be improved, expands application.
Description
Technical field
The present invention relates to the laser welding between the welding method between metal works, more particularly to two Al alloy parts
Method.
Background technology
Aluminium alloy has light weight, a good toughness, and yield tensile ratio is high, shapes the advantages that easy, be widely used in automobile,
On the welded product such as ship, chemical industry, machine-building, aviation and space flight.Welded using aluminium alloy instead of steel plate materialses, can
Greatly reduce architecture quality.Due to aluminium alloy material property itself so that it is urgently to be resolved hurrily that it is faced with some in welding technique
The problem of：The oxide-film of surface infusibility, welding joint softened, to be also easy to produce stomata, easy thermal deformation and thermal conductivity excessive etc..
Traditional Welded is typically using TIG weldering (Tungsten Inert Gas Welding, non-melt pole inertia
Gas tungsten electrode protection weldering) or MIG weldering (Metal Inert Gas Welding, welding) techniques, although
Both welding manner energy densities are larger, can obtain good joint during welding aluminum alloy, but penetration ability, welding be present
The shortcomings of deformation is big, low production efficiency.
Laser welding has the advantages that power density is high, thermal weld stress is low, welding heat affected zone is small and welding deformation is small,
Make it more and more extensive in Welded application field.In laser beam welding, because aluminum alloy surface has to laser
Higher reflectivity and the absorptivity of very little, simultaneously because the influence of keyhole effect and plasma to laser welding, weld seam table
Face easily forms the oxide-film of infusibility, in weld seam easily formed incomplete fusion, stomata, be mingled with, fire check the defects of, reduce welding
The mechanical property of joint, while splashing is easily formed on surface, seriously limit the application field of Laser Welding of Aluminum Alloys.
The content of the invention
The technical problem to be solved in the present invention is, for the drawbacks described above of prior art, proposes a kind of swashing for aluminium alloy
Photocoagulation method, it is possible to increase welding quality, expand application.
The technical solution adopted for the present invention to solve the technical problems is：A kind of method for laser welding of aluminium alloy is provided,
Butt welding is implemented to Al-alloy parts using semiconductor laser.
Wherein, it is seamless between the docking site of two pieces Al-alloy parts.
Wherein, it is apertured between the docking site of two pieces Al-alloy parts.
Wherein, the gap is no more than 1mm.
Wherein, 15 ° of head tilt is welded.
Wherein, protection gas is made using argon gas.
Wherein, gas flow 20L/min.
Wherein, require to blow in advance before weldering, postwelding slowly closes gas.
Wherein, the semiconductor laser technological parameter is 1000W, and the semiconductor laser technological parameter is 10-
30mm/s。
Wherein, the thickness of the Al-alloy parts is no more than 3mm.
The beneficial effects of the present invention are implement butt welding, Neng Gouti by using semiconductor laser to Al-alloy parts
High welding quality, expand application.
Brief description of the drawings
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing：
Fig. 1 is the laser beam shape appearance figure of optical fiber laser.
Fig. 2 is the laser beam shape appearance figure of semiconductor laser.
Fig. 3 is the welding schematic diagram using optical fiber laser.
Fig. 4 is the welding schematic diagram using semiconductor laser.
Fig. 5 is the section metallograph using the unspaced butted weld of optical fiber laser.
Fig. 6 is the section metallograph using the unspaced butted weld of semiconductor laser.
Fig. 7 is the shape appearance figure for having gap butt weld using optical fiber laser.
Fig. 8 is the shape appearance figure for having gap butt weld using semiconductor laser.
Fig. 9 is the shape appearance figure using the butt weld of thin plates of optical fiber laser.
Figure 10 is the shape appearance figure using the butt weld of thin plates of semiconductor laser.
Embodiment
In conjunction with accompanying drawing, presently preferred embodiments of the present invention is elaborated.
Referring to Fig. 1 and Fig. 2, Fig. 1 is the laser beam shape appearance figure of optical fiber laser.Fig. 2 is the laser of semiconductor laser
Light beam shape appearance figure.Fig. 3 is the welding schematic diagram using optical fiber laser.Fig. 4 is the welding schematic diagram using semiconductor laser.
For the blunt aluminium that thickness is 3mm, welded using optical fiber laser and semiconductor laser, carry out welding effect comparison.Hair
It is existing：Optical fiber laser beam energy density is in Gaussian Profile, and optical fiber laser is particularly suited for penetrating weldering due to good beam quality；
Semiconductor laser energy density is distributed in hat, and high-power semiconductor laser is more suitable for splicing weldering.
With reference to referring to referring to Fig. 5 and Fig. 6, Fig. 5 is the section metallograph using the unspaced butted weld of optical fiber laser.
Fig. 6 is the section metallograph using the unspaced butted weld of semiconductor laser.With organic solvents such as acetone or alcohol, wipe
The surface of aluminium alloy sheet, make two pieces of thin plate docking, two pieces of thin plates are fixed with fixture, ensure zero clearance.Optical-fiber laser
Device technological parameter is 250W, and 30mm/s, optical fiber laser institute welding line depth-to-width ratio is 1.8 ﹕ 1.Semiconductor laser technological parameter
For 1000W, 30mm/s, semiconductor laser institute welding line depth-to-width ratio is 1 ﹕ 2.5.
Referring to Fig. 7 and Fig. 8, Fig. 7 is the shape appearance figure for having gap butt weld using optical fiber laser.Fig. 8 is using half
The shape appearance figure for having gap butt weld of conductor laser.For the pure aluminum plate that thickness is 3mm, using optical fiber laser and partly lead
Body laser is welded.With organic solvents such as acetone or alcohol, aluminum alloy flake surface, two pieces of aluminium sheet docking, with folder are wiped
Tool is fixed two blocks of aluminium sheets, and guarantee gap is 0.1mm.Optical fiber laser power output 250W, speed of welding 30mm/s；Half
Conductor laser power output 1000W, speed of welding 30mm/s.As seen from Figure 7, optical fiber laser welding forming weld seam is in " Y "
Shape structure, fusion penetration reach 1.36mm, and depth-to-width ratio is 1 ﹕ 2.Because two pieces of aluminium sheet gaps are larger, while spot diameter is smaller, weld seam
Surface occurs seriously staying phenomenon.As seen from Figure 8, semiconductor laser formed weld is in hat, and fusion penetration reaches 0.54mm, molten wide
Reach 1.37mm, depth-to-width ratio is 1 ﹕ 2.5.Two blocks of left and right aluminium sheet melts, and preferably overlaps, can effectively overcome gap
Influence, and face of weld flat smooth, nothing substantially stay phenomenon.As can be seen here, semiconductor laser is big to gap bridges ability
In optical fiber laser.
Referring to Fig. 9 and Figure 10, Fig. 9 is the shape appearance figure using the butt weld of thin plates of optical fiber laser.Figure 10 is using half
The shape appearance figure of the butt weld of thin plates of conductor laser.Wherein, B area is the partial enlargement signal of a-quadrant.In other words, a-quadrant
The pattern of weld seam is illustrated, B area illustrates the partial enlargement of the pattern of weld seam.For 6063 aluminum alloy thins that thickness is 1mm
Plate, welded using optical fiber laser and semiconductor laser.Aluminium alloy sheet is wiped with organic solvents such as acetone or alcohol
Surface, two pieces of thin plates are fixed with fixture, using docking form, intermediate space zero.Optical fiber laser power output is
300W, 10mm/s；Semiconductor laser technological parameter is 1000W, 10mm/s.As seen from Figure 9, optical fiber laser welding forming welds
Occurs very big stomata in seam, and back-welding shape is of poor quality.As seen from Figure 10, semiconductor laser welding forming weld seam without
Stomata and crackle occur, and weld seam front and back of the body two sides pattern are smooth, it is good to shape, and no splash produces, and forming quality is obvious
Better than optical fiber laser.As can be seen here, semiconductor laser welding is suitably applied material single welding, two-sides forming technique.
More than, the present invention is mainly using optical fiber laser and semiconductor laser for different thicknesss of slab, different technology conditions
Under aluminium alloy plate welded.Aluminium alloy plate is fixed with fixture, because aluminium alloy has high reflectivity to laser
Seek 15 ° of head tilt of welding.Protection gas is made using Ar (argon gas), gas flow 20L/min, requires to blow in advance before welding, postwelding
Slowly close gas.The process advantage that comparative analysis semiconductor laser has in welding aluminum alloy, is welded using semiconductor laser
Welded q＆r can be significantly improved by connecing, while reduce production cost.
Thus, the present invention proposes a kind of method for laser welding of aluminium alloy, real to Al-alloy parts using semiconductor laser
Butt welding is applied, wherein both can be seamless between the docking site of two pieces Al-alloy parts or have certain gap.
Also, only it need to implement welding in the one side of two pieces Al-alloy parts, you can realize two-sides forming.Specifically, head tilt is welded
15°.Protection gas is made using Ar (argon gas), gas flow 20L/min, requires to blow in advance before welding, postwelding slowly closes gas.Partly lead
Body laser technological parameter is 1000W, 10-30mm/s.
Specifically, semiconductor laser energy density is distributed in hat, wavelength 800 between 1100nm, compared to
It is shorter for the wavelength of optical fiber laser (typical wavelengths are between 1030 and 1070nm), suction of the metal material to semiconductor laser
Yield is higher, and its electro-optical efficiency is higher than optical fiber laser by 20%.Semiconductor laser is compared with optical fiber laser Energy distribution
Uniformly, the weld pool stability formed in welding is more preferable, smooth welded seam, smooth, and metal surface is splashed few, while can reduce weldering
In seam the defects of crackle, stomata.Semiconductor laser is strong to the gap bridges ability of workpiece, suitable for the metal welding of larger gap
Connect, such as kitchen tools, automobile, ship.For reliability, semiconductor laser not only has good welding result, and energy
The steady operation in severe external environment condition.By the way that compressed air is imported into semiconductor laser critical component, ash can be prevented
Dirt, the water to splash immerse, and significantly reduce maintenance cost and maintenance difficulty.
It should be appreciated that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations, to ability
For field technique personnel, the technical scheme described in above-described embodiment can be modified, or it is special to which part technology
Sign carries out equivalent substitution；And these are changed and are replaced, it should all belong to the protection domain of appended claims of the present invention.
Claims (10)
1. a kind of method for laser welding of aluminium alloy, it is characterised in that implement to dock to Al-alloy parts using semiconductor laser
Weldering.
2. according to the method for claim 1, it is characterised in that：It is seamless between the docking site of two pieces Al-alloy parts
's.
3. according to the method for claim 1, it is characterised in that：It is to have gap between the docking site of two pieces Al-alloy parts
's.
4. according to the method for claim 3, it is characterised in that：The gap is no more than 1mm.
5. according to the method for claim 1, it is characterised in that：Weld 15 ° of head tilt.
6. according to the method for claim 1, it is characterised in that：Protection gas is made using argon gas.
7. according to the method for claim 6, it is characterised in that：Gas flow is 20L/min.
8. according to the method for claim 6, it is characterised in that：Require to blow in advance before weldering, postwelding slowly closes gas.
9. according to the method for claim 1, it is characterised in that：The semiconductor laser technological parameter is 1000W, described
Semiconductor laser technological parameter is 10-30mm/s.
10. according to the method for claim 1, it is characterised in that：The thickness of the Al-alloy parts is no more than 3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710973247.5A CN107627026A (en) | 2017-10-18 | 2017-10-18 | A kind of method for laser welding of aluminium alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710973247.5A CN107627026A (en) | 2017-10-18 | 2017-10-18 | A kind of method for laser welding of aluminium alloy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107627026A true CN107627026A (en) | 2018-01-26 |
Family
ID=61104812
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710973247.5A Pending CN107627026A (en) | 2017-10-18 | 2017-10-18 | A kind of method for laser welding of aluminium alloy |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107627026A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112756780A (en) * | 2020-12-25 | 2021-05-07 | 宁波旭升汽车技术股份有限公司 | Non-wire-filling S-shaped swinging laser welding process suitable for thin-wall aluminum alloy |
| CN114406459A (en) * | 2021-12-29 | 2022-04-29 | 广州瑞松北斗汽车装备有限公司 | Laser welding process for automobile battery tray connecting piece |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005246454A (en) * | 2004-03-05 | 2005-09-15 | Sumitomo Light Metal Ind Ltd | Method of laser welding |
| CN102091871A (en) * | 2011-01-10 | 2011-06-15 | 哈尔滨工业大学 | Laser pulse spot welding method for metal sheet |
| CN103495804A (en) * | 2013-09-25 | 2014-01-08 | 哈尔滨恒普激光应用技术有限公司 | Method for controlling dissimilar-material laser welding molten bath metallurgy |
| CN105562930A (en) * | 2016-03-03 | 2016-05-11 | 武汉华工激光工程有限责任公司 | Laser welding method for power battery outer shell |
| CN106181031A (en) * | 2016-07-11 | 2016-12-07 | 长沙理工大学 | Aluminum alloy laser welding method |
-
2017
- 2017-10-18 CN CN201710973247.5A patent/CN107627026A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005246454A (en) * | 2004-03-05 | 2005-09-15 | Sumitomo Light Metal Ind Ltd | Method of laser welding |
| CN102091871A (en) * | 2011-01-10 | 2011-06-15 | 哈尔滨工业大学 | Laser pulse spot welding method for metal sheet |
| CN103495804A (en) * | 2013-09-25 | 2014-01-08 | 哈尔滨恒普激光应用技术有限公司 | Method for controlling dissimilar-material laser welding molten bath metallurgy |
| CN105562930A (en) * | 2016-03-03 | 2016-05-11 | 武汉华工激光工程有限责任公司 | Laser welding method for power battery outer shell |
| CN106181031A (en) * | 2016-07-11 | 2016-12-07 | 长沙理工大学 | Aluminum alloy laser welding method |
Non-Patent Citations (1)
| Title |
|---|
| 李娜等: "大功率半导体激光焊接2024和7075 的试验研究", 《红外与激光工程》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112756780A (en) * | 2020-12-25 | 2021-05-07 | 宁波旭升汽车技术股份有限公司 | Non-wire-filling S-shaped swinging laser welding process suitable for thin-wall aluminum alloy |
| CN114406459A (en) * | 2021-12-29 | 2022-04-29 | 广州瑞松北斗汽车装备有限公司 | Laser welding process for automobile battery tray connecting piece |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Acherjee | Hybrid laser arc welding: State-of-art review | |
| CN110539078B (en) | 5A06/ZL114A dissimilar aluminum alloy part butt joint laser swing welding method | |
| Zhang et al. | Microstructure and properties of the laser butt welded 1.5-mm thick T2 copper joint achieved at high welding speed | |
| Bagger et al. | Review of laser hybrid welding | |
| KR101436705B1 (en) | Laser/arc hybrid welding method and method of producing welded member using same | |
| WO2020206923A1 (en) | Hybrid-welding method and device for continuous welding, finished welded product, and vehicle body | |
| JP6776555B2 (en) | Narrow groove welded joint using laser arc hybrid welding method and its manufacturing method | |
| Casalino et al. | Arc leading versus laser leading in the hybrid welding of aluminium alloy using a fiber laser | |
| CN105108341A (en) | Laser-MAG welding method for steel plate of medium thickness and superhigh strength | |
| JP2008126315A (en) | Laser welding process with improved penetration | |
| CN104384718B (en) | A kind of Ti2AlNb base intermetallic compound dual-beam pulse method for laser welding | |
| CN105149785A (en) | Lap joint laser welding technology for 0.5 mm aluminum alloy plate | |
| CN102091872A (en) | Laser offset welding method suitable for magnesium/steel and magnesium/titanium | |
| CN104999181B (en) | A kind of laser InFocus electric arcs bifocus complex welding method | |
| CN105127595A (en) | Laser-double side arc compound welding method for thick plate | |
| CN111604593A (en) | Laser mirror image welding method | |
| CN105149789A (en) | Angle joint laser welding technology for 0.5 mm galvanized plate | |
| CN110253146B (en) | High-strength copper-aluminum dissimilar material double-helix welding process | |
| CN114261100A (en) | Method for welding transparent hard and brittle material and metal by ultrafast laser | |
| CN107627026A (en) | A kind of method for laser welding of aluminium alloy | |
| CN113681150A (en) | Method and device for multi-beam laser welding of nano modified aluminum alloy | |
| CN109807420B (en) | Aluminum/steel dissimilar metal low-power laser coupling DP-MIG fusion brazing method | |
| CN102179627A (en) | Fusing-soldering welding method of aluminum-steel workpiece of joint positioned at one side of cladding steel | |
| CN110480166A (en) | A kind of new process of body of a motor car galvanized sheet laser stitch welding | |
| Xiao et al. | Influence of wire addition direction in C02 laser welding of aluminum |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180126 |
|
| RJ01 | Rejection of invention patent application after publication |