A process for plating Sn on metal fasteners was introduced, including degreasing, halide Sn plating, oxidative blackening, polishing and varnishing.

• 介绍了一种金属钮扣电镀古锡的工艺,其主要工序包括除油、卤化物镀锡、氧化发黑、抛光、罩清漆等。