一 前 言 在铜合金的熔炼中,首先需要解决的是避免熔融金属吸收气体(主要是氢)。为此,铜合金一般是进行氧化熔炼,即在氧化性或微氧化性气氛下进行熔化,这样一来铜液将过多的含有氧。在氧化熔炼之后,需经脱氧处理,才能浇注,否则铸件将产生严重的氧化夹渣而报废。脱氧处理工序应放在纯铜熔化之后,加入合金成分之前进行。对紫铜 A preface In the smelting of copper alloys, the first thing to be solved is to prevent the molten metal from absorbing gases (mainly hydrogen). For this reason, the copper alloy is generally subjected to oxidation melting, that is, melting in an oxidizing or slightly oxidizing atmosphere, so that the copper solution will contain too much oxygen. In the oxidation melting, deoxidation required to pouring, or castings will have serious oxidation slag and scrapped. Deoxidation process should be placed on the copper after melting, before adding the alloy composition. Pair of copper