Thin film brazing of aluminum shapes
    2.
    发明授权
    Thin film brazing of aluminum shapes 失效
    铝型材的薄膜钎焊

    公开(公告)号:US5464146A

    公开(公告)日:1995-11-07

    申请号:US315039

    申请日:1994-09-29

    摘要: An improved method of brazing of two unclad aluminum shapes, particularly for automotive heat exchangers, which brazing joint does not leave a physically apparent layer of brazing material and which effects a stronger, sounder autogenous joint. A thin film of aluminum eutectic forming material (Si, Al-Si or Al-Zn) is deposited onto a zone of at least one of the shapes to be brazed or joined. The shapes are placed in joining relationship to form an assembly with a joint at the zone. The assembly is heated to a temperature to diffuse the eutectic forming material into the aluminum members to form a sacrificial bond between the shapes at the joining zone. It is desirable that at least one of the unclad aluminum shapes to be joined is extruded tubing having a precise diametrical configuration and said film is deposited as a physically vapor deposited layer in a thickness range of 1-50 microns.

    摘要翻译: 两种未包覆的铝形状的改进方法,特别是用于汽车热交换器的钎焊方法,该钎焊接头不会留下物理上明显的钎焊材料层,并且会产生更强大的发声器自生接头。 将铝共晶形成材料(Si,Al-Si或Al-Zn)的薄膜沉积在待钎焊或接合的至少一种形状的区域上。 这些形状被放置成接合关系以形成在该区域具有接头的组件。 将组件加热到一个温度以将共晶形成材料扩散到铝构件中,以在接合区域之间形成形状之间的牺牲结合。 期望待连接的未包覆铝形状中的至少一种是具有精确直径构造的挤出管,并且所述膜作为物理气相沉积层沉积在1-50微米的厚度范围内。