我厂用镀锡碳刷铜线作硅整流元件、硅可控整流元件、硅雪崩整流元件的电极引出线。碳刷铜线是多股0.1mm直径铜丝绞合而成的,用挂镀和滚镀,镀层都不均匀,宜用浸镀。过去都用贵重、有毒的氰化物作浸镀镀锡的络合剂。去年我厂电镀班的工人同志在“东北地区无氰电镀技术交流会”的启发和鼓舞下, I plant with tin-plated copper wire for silicon rectifier components, silicon controllable rectifier components, silicon avalanche rectifying components of the electrode leads. Carbon brush copper wire is stranded 0.1mm diameter copper wire stranded, with hanging plating and barrel plating, coating are not uniform, it is appropriate to dip plating. In the past are expensive, toxic cyanide dip-plating tin complexing agent. Last year, my factory workers in the electroplating class comrades in the “Northeast cyanide plating technology exchange ” inspired and encouraged,