By passing a current through a component switched to a tin galvano-electrolyte, a tin plating is precipitated onto the surface of the component.
Tin plating: process and advantages
The precipitated tin plating typically has a silvery-white colour and a glossy and soft surface. This decorative surface also provides good corrosion resistance, as a fine passivation layer is formed at the surface. The method used leads to very good throwing power, so that excellent results can be achieved, even on components with a very complex geometry. The dreaded "whisker formation" effect is suppressed. This lead-free method is RoHs-compatible. Components can be finished on the rack as well as in the drum.Among other materials, aluminium, steel, stainless steel, copper, brass and Zn die-cast components can be plated.