铜铝搭接焊缝脆性层的防止

• 作 者: 柳台夫
• 出 处: 焊接
• 发表日期: 1980年05期
• 关键词: 脆性 搭接焊 过渡层 电弧焊 焊缝强度 焊缝金属 镀锡 铝板 金属间化合物 母材

电弧焊铜铝时,焊缝金属与母材之间常生成一种金属间化合物——CuAl_2,使焊缝强度明显降低。本文采用在铜铝之间用锡作过渡层,用惰性气体进行保护的方法,防止了脆性层的产生。具体工艺是,将4毫米厚的铜板的一端进行浸渍镀锡,然后和铝板的一端搭接;

Arc-welding of aluminum and aluminum, the weld metal and base metal often generate an intermetallic compound - CuAl_2, so that weld strength was significantly reduced. In this paper, between the copper and aluminum with tin as a transition layer, with inert gas to protect the method to prevent the brittle layer. The specific process is that one end of a 4 mm thick copper plate is impregnated and tinned, and then one end of the aluminum plate is lapped;