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Electropolishing
Also known as "chemical machining" and "reverse plating", electropolishing is an electrochemical process far superior to any available mechanical process for the removal of minute surface imperfections in stainless steel. It levels and brightens the material surface by anodic dissolution in an electrolyte flowing solution with an imposed electrical current. When the proper combination of electrolyte current & temperature is attained, the high points of surface irregularities, or high current density areas, are selectively removed at a greater rate than the remainder of the surface, resulting in improved surface smoothness. During electropolishing, the polarized surface film is subjected to the combined effects of gassing (oxygen) that occurs with electromechanical metal removal, saturation of the surface with dissolved metal, and the agitation and temperature of the electrolyte