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高铅青铜为我厂浇铸轴瓦之材料,其成份为铅～30%、银～1%、铁～1%,铜为余量。银量为解决浇铸过程中防止铅的偏析现象而加入,铁为杂质,生产中控制在■1.5%为允许量。在合金材料中.银的分析方法所见的有比色法,EDTA 间接容量测定法,使用隐蔽剂所进行的控制电位电解测定。以上方法分析时间均较长,手续亦繁琐。以硫氰酸盐银量法进行容量测定较为简便,但
High lead bronze castings for my factory bearing materials, the composition of lead ~ 30%, silver ~ 1%, iron ~ 1%, copper margin. The amount of silver to solve the segregation of lead in the casting process to join the phenomenon of iron as an impurity control in the production ■ 1.5% of the allowable amount. In the alloy material, the silver analysis method sees the colorimetric method, the EDTA indirect capacity measurement method, and the control potential electrolytic determination using a concealing agent. The above analysis methods are longer, formalities are cumbersome. It is simpler to measure the capacity of thiocyanate silver, however