发明授权
- 专利标题： Flexible extendable backing shield for welding reactive metals
- 专利标题（中）： 用于焊接反应性金属的柔性可延伸背衬屏蔽
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申请号： US183949申请日： 1988-04-20
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公开(公告)号： US4866236A公开(公告)日： 1989-09-12
- 发明人: Robert DeNale , William E. Lukens , Luther A. Marsh
- 申请人： Robert DeNale , William E. Lukens , Luther A. Marsh
- 申请人地址： DC Washington
- 专利权人： The United States of America as represented by the Secretary of the Navy
- 当前专利权人： The United States of America as represented by the Secretary of the Navy
- 当前专利权人地址： DC Washington
- 主分类号： B23K9/32
- IPC分类号： B23K9/32
摘要：
A flexible extendable backing shield for use with the welding of reactive metals such as titanium. The backing shield provides a means for selectively distributing the inert gas along the length of the shield and then diffusing the inert gas to the root side of the weld to prevent oxidation and embrittlement of the weld root. The backing shield is of modular configuration so that a plurality of the devices can be readily connected together to shield a variety of complex shapes.
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