CN100371125C - Welding method for laser welding of AL-Mg alloy plate with different thickness - Google Patents
Welding method for laser welding of AL-Mg alloy plate with different thickness Download PDFInfo
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- CN100371125C CN100371125C CNB2004100261987A CN200410026198A CN100371125C CN 100371125 C CN100371125 C CN 100371125C CN B2004100261987 A CNB2004100261987 A CN B2004100261987A CN 200410026198 A CN200410026198 A CN 200410026198A CN 100371125 C CN100371125 C CN 100371125C
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- welding
- laser welding
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- 238000003466 welding Methods 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims abstract description 14
- 229910000861 Mg alloy Inorganic materials 0.000 title description 2
- 239000000843 powder Substances 0.000 claims abstract description 16
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910018134 Al-Mg Inorganic materials 0.000 claims abstract description 9
- 229910018467 Al—Mg Inorganic materials 0.000 claims abstract description 9
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 9
- 239000000956 alloy Substances 0.000 claims abstract description 9
- 239000000203 mixture Substances 0.000 claims abstract description 9
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000002904 solvent Substances 0.000 claims abstract description 8
- 239000007789 gas Substances 0.000 claims abstract description 6
- 239000011324 bead Substances 0.000 claims abstract description 4
- 238000001035 drying Methods 0.000 claims abstract description 4
- 239000011261 inert gas Substances 0.000 claims abstract description 4
- 239000002932 luster Substances 0.000 claims abstract description 4
- 238000003756 stirring Methods 0.000 claims abstract description 4
- 229910052749 magnesium Inorganic materials 0.000 abstract description 4
- 229910052782 aluminium Inorganic materials 0.000 abstract description 3
- 210000001503 joint Anatomy 0.000 abstract description 3
- 239000002245 particle Substances 0.000 abstract description 2
- 230000004907 flux Effects 0.000 abstract 2
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 239000011777 magnesium Substances 0.000 description 4
- 229910052786 argon Inorganic materials 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 238000011049 filling Methods 0.000 description 2
- 239000001307 helium Substances 0.000 description 2
- 229910052734 helium Inorganic materials 0.000 description 2
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- SNAAJJQQZSMGQD-UHFFFAOYSA-N aluminum magnesium Chemical compound [Mg].[Al] SNAAJJQQZSMGQD-UHFFFAOYSA-N 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000002310 reflectometry Methods 0.000 description 1
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
- B23K26/211—Bonding by welding with interposition of special material to facilitate connection of the parts
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- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Laser Beam Processing (AREA)
- Nonmetallic Welding Materials (AREA)
Abstract
用于Al-Mg合金异厚度板材激光焊接的焊接方法，其目的是提高Al-Mg合金异厚度板材对接的激光焊接稳定性，改善焊缝成形性能。其焊剂是由Mg、Al构成，按重量百分比Mg为3～8%、其余为Al，焊剂粉末的粒度为100～300目。其焊接方法为：首先将粉末混合后，研磨15～30分钟使其混合均匀，放入烘干炉中在100～180℃温度下烘干15～30分钟，然后将粉末与丙酮或丁酮溶剂混合，搅拌均匀后刷涂于整个待焊焊道表面，最小厚度以遮盖工件原有金属光泽为宜，待溶剂挥发后进行激光焊接，激光焊接时采用惰性气体作为保护气体，焊接时离焦量为：(0∽-0.9)×薄板的厚度，焊接速度在每分钟0.5米至10米之间。A welding method for laser welding of Al-Mg alloy plates with different thicknesses, the purpose of which is to improve the laser welding stability of the butt joint of Al-Mg alloy plates with different thicknesses, and improve the weld seam formability. The flux is composed of Mg and Al, the Mg is 3-8% by weight, the rest is Al, and the particle size of the flux powder is 100-300 mesh. The welding method is as follows: first mix the powder, grind it for 15-30 minutes to make it evenly mixed, put it in a drying furnace and dry it at a temperature of 100-180°C for 15-30 minutes, and then mix the powder with acetone or butanone solvent Mix, stir evenly, and brush on the entire surface of the bead to be welded. The minimum thickness is suitable for covering the original metallic luster of the workpiece. Laser welding is performed after the solvent evaporates. Inert gas is used as the shielding gas during laser welding. Defocusing amount during welding It is: (0∽-0.9)×thickness of the thin plate, and the welding speed is between 0.5m and 10m per minute.
Description
技术领域 technical field
本发明涉及焊接的填充粉末及焊接方法，特别适合于Al-Mg合金异厚度板材的激光焊接。The invention relates to welding filler powder and a welding method, and is especially suitable for laser welding of Al-Mg alloy plates with different thicknesses.
背景技术 Background technique
激光焊接Al-Mg合金异厚度板材时，由于铝镁合金表面对激光束极高的反射率以及镁元素的大量烧损，铝镁合金的激光焊接本身具有一定难度；而且由于清洗过程中人为因素的影响、装夹误差的影响等，常常会使板材表面状态不均匀、板材间隙过大或不均匀，而激光束对铝合金表面状态及板材间隙的敏感性很大，从而使得焊接过程极不稳定，焊缝成形不良。When laser welding Al-Mg alloy plates with different thicknesses, due to the extremely high reflectivity of the surface of the Al-Mg alloy to the laser beam and the large amount of magnesium burning, the laser welding of the Al-Mg alloy itself is difficult; and due to human factors in the cleaning process The influence of the impact of the clamping error and the influence of the clamping error often make the surface state of the plate uneven, the gap between the plates is too large or uneven, and the laser beam is very sensitive to the surface state of the aluminum alloy and the gap between the plates, which makes the welding process extremely unstable. Stable, poorly formed welds.
发明内容 Contents of the invention
本发明的目的是提高Al-Mg合金异厚度板材对接的激光焊接稳定性，改善焊缝成形性能。The purpose of the invention is to improve the laser welding stability of the butt joint of Al-Mg alloy plates with different thicknesses, and improve the weld seam formability.
本发明的焊接方法的步骤为：预置粉末时，首先将粉末混合后，研磨15～30分钟使其混合均匀，放入烘干炉中在100～180℃温度下烘干15～30分钟，然后将粉末与丙酮或丁酮溶剂混合，搅拌均匀后刷涂于整个待焊焊道表面，最小厚度以遮盖工件原有金属光泽为宜，待溶剂挥发后进行激光焊接，激光焊接时采用惰性气体作为保护气体，焊接时选用负离焦量，离焦量为：(0～-0.9)×薄板的厚度，焊接速度在每分钟0.5米至10米之间。The steps of the welding method of the present invention are as follows: when presetting the powder, first mix the powder, grind it for 15-30 minutes to make it evenly mixed, put it into a drying furnace and dry it at a temperature of 100-180°C for 15-30 minutes, Then mix the powder with acetone or methyl ethyl ketone solvent, stir evenly, and then brush it on the entire surface of the bead to be welded. The minimum thickness is suitable for covering the original metallic luster of the workpiece. Laser welding is performed after the solvent evaporates. Laser welding uses inert gas As a shielding gas, negative defocusing amount is selected during welding. The defocusing amount is: (0～-0.9)×thickness of the thin plate, and the welding speed is between 0.5 meters and 10 meters per minute.
使用Nd:YAG激光器施焊时，激光功率在500W至10000W之间。优选使用的功率在1000W至4000W之间。When using Nd:YAG laser for welding, the laser power is between 500W and 10000W. Preferably the power used is between 1000W and 4000W.
使用二氧化碳激光器施焊时，激光功率在1000W至40000W之间。优选使用的功率在1000W至5000W之间。When welding with carbon dioxide laser, the laser power is between 1000W and 40000W. Preferably the power used is between 1000W and 5000W.
本发明的焊接方法在惰性气体的情况下操作，保护方式采用正面保护和背面保护共用，保护气体可以选用氮气、氩气、氦气，也可以使用氦气、氮气的混合气体。The welding method of the present invention is operated under the condition of inert gas, and the protection method adopts both front protection and back protection. The protection gas can be nitrogen, argon, helium, or a mixed gas of helium and nitrogen.
采用本方法可以使Al-Mg合金异厚度板材对接的激光焊接稳定性显著提高，焊缝成形性能大大改善。从而降低了对装夹精度的严格要求，在板间间距不均匀时，仍能得到外观成形优良的焊缝，同时还可以细化焊缝组织、提高焊缝强度。By adopting the method, the laser welding stability of the butt joint of Al-Mg alloy plates with different thicknesses can be significantly improved, and the formability of the weld seam can be greatly improved. Therefore, the strict requirements on the clamping accuracy are reduced, and when the spacing between plates is uneven, welds with excellent appearance and shape can still be obtained, and at the same time, the structure of the weld can be refined and the strength of the weld can be improved.
具体实施方式 Detailed ways
本发明的填加粉末由Mg、Al构成，粉末粒度为100～300目，重量配比分别为：Mg占3～8％、其余为Al。其焊接方法的粉末填加采用预置方法，首先将粉末混合后，研磨15～30分钟使其混合均匀，放入烘干炉中100～180℃烘干15～30分钟，然后将粉末与丙酮或丁酮溶剂混合，搅拌均匀后刷涂于整个待焊焊道表面，涂层厚度与板厚有关，最小厚度以遮盖工件原有金属光泽为宜，待溶剂挥发后进行激光焊接。The added powder of the present invention is composed of Mg and Al, the particle size of the powder is 100-300 mesh, and the weight ratio is respectively: Mg accounts for 3-8%, and the rest is Al. The powder filling of the welding method adopts the preset method. Firstly, after mixing the powder, grind it for 15-30 minutes to make it evenly mixed, put it in a drying furnace and dry it at 100-180°C for 15-30 minutes, and then mix the powder with acetone or methyl ethyl ketone solvent, stir evenly and brush on the entire surface of the bead to be welded. The thickness of the coating is related to the thickness of the plate. The minimum thickness is suitable for covering the original metallic luster of the workpiece. Laser welding is performed after the solvent evaporates.
用CO2激光器进行激光焊接，焊接厚度为1mm和1.5mm的铝镁合金LF2时，在正面和背面均采用氩气保护气体，所用填充粉末的组分为：5％Mg、95％Al，激光功率1600W、离焦量-0.2mm(相对于薄板)、焊接速度1.6m/min时，可以获得成型美观、性能优良的焊缝。Use CO2 laser for laser welding. When welding aluminum-magnesium alloy LF2 with a thickness of 1mm and 1.5mm, argon shielding gas is used on both the front and back sides. The composition of the filling powder used is: 5% Mg, 95% Al, laser When the power is 1600W, the defocus amount is -0.2mm (relative to the thin plate), and the welding speed is 1.6m/min, a weld with beautiful shape and excellent performance can be obtained.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100261987A CN100371125C (en) | 2004-05-27 | 2004-05-27 | Welding method for laser welding of AL-Mg alloy plate with different thickness |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100261987A CN100371125C (en) | 2004-05-27 | 2004-05-27 | Welding method for laser welding of AL-Mg alloy plate with different thickness |
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| Publication Number | Publication Date |
|---|---|
| CN1583351A CN1583351A (en) | 2005-02-23 |
| CN100371125C true CN100371125C (en) | 2008-02-27 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102615426A (en) * | 2012-04-18 | 2012-08-01 | 机械工业第三设计研究院 | Novel welding method for laser welding of magnesium alloy |
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| CN102513731A (en) * | 2012-01-04 | 2012-06-27 | 天津大学 | Active agent used for eliminating columnar crystals of low carbon steel weld seams and application method thereof |
| CN102764934A (en) * | 2012-07-05 | 2012-11-07 | 兰州理工大学 | Aluminum steel dissimilar metal laser welding-brazing welding method and filled powder |
| CN107775213B (en) * | 2017-10-10 | 2019-09-27 | 北京航天新风机械设备有限责任公司 | A kind of almag laser welding activating agent and its application |
| CN111318805B (en) * | 2020-02-14 | 2022-03-22 | 江苏大学 | Laser welding method for high-entropy alloy with preset powder |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56141989A (en) * | 1980-04-03 | 1981-11-05 | Furukawa Alum Co Ltd | Aluminum alloy filler metal |
| JPH02307691A (en) * | 1989-05-23 | 1990-12-20 | Toshiba Corp | Welding method for high strength aluminum alloy |
| JPH0399793A (en) * | 1989-09-13 | 1991-04-24 | Kobe Steel Ltd | Al-zn-mg series filler material having excellent stress corrosion cracking resistance |
| JPH0718362A (en) * | 1993-07-02 | 1995-01-20 | Furukawa Alum Co Ltd | Aluminum alloy for laser welding |
| JPH07284972A (en) * | 1994-04-14 | 1995-10-31 | Nippon Steel Corp | Manufacturing method of honeycomb structure made of superplastic aluminum alloy |
| JPH106078A (en) * | 1996-06-25 | 1998-01-13 | Furukawa Electric Co Ltd:The | Aluminum-magnesium-silver base alloy filler material excellent in welding crack resistance, stress corrosion crack resistance and welding joint strength |
| US6416884B1 (en) * | 1997-10-03 | 2002-07-09 | Corus Aluminium Walzprodukte Gmbh | Aluminium-magnesium weld filler alloy |
| US20030145912A1 (en) * | 1998-02-20 | 2003-08-07 | Haszler Alfred Johann Peter | Formable, high strength aluminium-magnesium alloy material for application in welded structures |
| JP2003320468A (en) * | 2002-05-08 | 2003-11-11 | Kobe Steel Ltd | Method for laser beam welding of aluminum alloy plate |
-
2004
- 2004-05-27 CN CNB2004100261987A patent/CN100371125C/en not_active Expired - Fee Related
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56141989A (en) * | 1980-04-03 | 1981-11-05 | Furukawa Alum Co Ltd | Aluminum alloy filler metal |
| JPH02307691A (en) * | 1989-05-23 | 1990-12-20 | Toshiba Corp | Welding method for high strength aluminum alloy |
| JPH0399793A (en) * | 1989-09-13 | 1991-04-24 | Kobe Steel Ltd | Al-zn-mg series filler material having excellent stress corrosion cracking resistance |
| JPH0718362A (en) * | 1993-07-02 | 1995-01-20 | Furukawa Alum Co Ltd | Aluminum alloy for laser welding |
| JPH07284972A (en) * | 1994-04-14 | 1995-10-31 | Nippon Steel Corp | Manufacturing method of honeycomb structure made of superplastic aluminum alloy |
| JPH106078A (en) * | 1996-06-25 | 1998-01-13 | Furukawa Electric Co Ltd:The | Aluminum-magnesium-silver base alloy filler material excellent in welding crack resistance, stress corrosion crack resistance and welding joint strength |
| US6416884B1 (en) * | 1997-10-03 | 2002-07-09 | Corus Aluminium Walzprodukte Gmbh | Aluminium-magnesium weld filler alloy |
| US20030145912A1 (en) * | 1998-02-20 | 2003-08-07 | Haszler Alfred Johann Peter | Formable, high strength aluminium-magnesium alloy material for application in welded structures |
| JP2003320468A (en) * | 2002-05-08 | 2003-11-11 | Kobe Steel Ltd | Method for laser beam welding of aluminum alloy plate |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102615426A (en) * | 2012-04-18 | 2012-08-01 | 机械工业第三设计研究院 | Novel welding method for laser welding of magnesium alloy |
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