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与普通的铜及其合金相比,铝青铜由于含有约9%的铝,故在焊接上的主要困难是形成不易去除的氧化铝膜。当采用一般的镴焊焊剂时,不能获得令人满意的焊接质量。为了满足生产上的要求,特试制了一种能很好地去除铝青铜表面氧化膜的焊剂,配合镉基焊料,采用火焰加热方法,能满足铝青铜镴焊的要求。焊料:镉91%;锌45;银4.5%;镍0.5%;熔点约为360℃。配制方法:先把银和镍加入石墨坩埚,放入炉中加热至1300℃左右,使其完全熔化后,把坩埚拿出炉外,立即将锌
Compared with ordinary copper and its alloys, aluminum bronze contains about 9% aluminum, so the main difficulty in welding is to form an easily removable aluminum oxide film. When using normal solder flux, satisfactory weld quality can not be obtained. In order to meet the requirements of production, a specially developed flux that can remove the oxide film on the surface of aluminum bronze is specially made. With the method of flame heating, it can meet the requirements of aluminum bronze welding. Solder: Cadmium 91%; Zinc 45; Silver 4.5%; Nickel 0.5%; Melting point about 360 ° C. Preparation method: The first silver and nickel into the graphite crucible, placed in the furnace heated to about 1300 ℃, so that it completely melted, the crucible out of the furnace, and immediately zinc