发明申请
US20050263500A1 Laser or laser/arc hybrid welding process with formation of a plasma on the backside
审中-公开
激光或激光/电弧复合焊接工艺，在背面形成等离子体
- 专利标题： Laser or laser/arc hybrid welding process with formation of a plasma on the backside
- 专利标题（中）： 激光或激光/电弧复合焊接工艺，在背面形成等离子体
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申请号： US11133995申请日： 2005-05-20
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公开(公告)号： US20050263500A1公开(公告)日： 2005-12-01
- 发明人: Francis Briand , Philippe Lefebvre , Olivier Dubet
- 申请人： Francis Briand , Philippe Lefebvre , Olivier Dubet
- 优先权： FR0451042 20040526
- 主分类号： B23K9/16
- IPC分类号： B23K9/16 ; B23K26/14 ; B23K26/20 ; B23K103/04 ; B23K103/10
摘要：
A method for welding metal work pieces with a CO2 type laser. A first shielding gas is used on the topside of the work piece, a second shielding gas is used on the backside of the work piece. The first and the second shielding gases have different compositions. A full penetration weld joint is produced by at least a laser beam which is delivered from the topside of the work piece. A plasma, which contributes to the production of the welded joint, is created in the second plasma gas.
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