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US07293689B2 Two tier brazing for joining copper tubes to manifolds 失效
用于将铜管连接到歧管的两层钎焊

Two tier brazing for joining copper tubes to manifolds
摘要：
A brazing process for joining copper and copper alloy tubes to a fitting which includes first forming a layer of a high melting temperature noble metal on one end of a copper or copper alloy tube. The plated end is then brazed to a metal ferrule to form a copper alloy-ferrule assembly. The assembly is then furnace brazed to a metal fitting.
摘要（中）：

一种用于将铜和铜合金管接合到配件的钎焊方法，该配件包括首先在铜或铜合金管的一端形成高熔点的贵金属层。 然后将电镀端钎焊到金属套圈上以形成铜合金套圈组件。 然后将组件熔炼到金属配件上。

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