How to Avoid Electroplating at the Assembly Position of Plastic Parts

Before plastic (usually ABS plastic) is electroplated, it must be “roughened” by strong acid, and the butadiene particles on the surface are dissolved by the strong acid. The properties of such injection molded parts are different from those just after injection molding. The surface is rough brittle and hard. Electroplating coatings are generally inorganically reduced metal elements, such as aluminum, copper, silver, etc. The best way to remove them without damaging the plastic bottom is to pickle them again, using dilute hydrochloric acid, dilute sulfuric acid dilute nitric acid, etc. The electroplating layer will be dissolved into an inorganic saltwater solution and fade away soon. Please try it on a small scale and refer to it as appropriate. In addition, in addition to the general inorganic electroplating layer, there may be a layer of varnish used to isolate oxygen and protect it. This can be pre-dissolved with strong solvents such as ethyl acetate, cyclohexanone, or carbon tetrachloride and then pickled. The effect is relatively good.