Copper plating

Surface finishing refers to the process of altering the characteristics of a metal surface by adding, removing or reshaping it. The main purpose is to protect the metal and enhance its aesthetic appearance. Similar effects can be achieved through different methods, such as coloring through anodizing, powder coating or wet painting.

Main benefits:
Enhanced corrosion resistance
Improved adhesion of coatings or other surface treatments
Elimination of surface defects
Increased chemical resistance
Improved electrical conductivity or enhanced surface conductive ability
Enhanced strength and wear resistance while reducing friction
Enhanced aesthetic appeal

Common Surface Treatment Methods and Brief Descriptions
Electroplating: Utilizing electric current to deposit metal ions onto the substrate, providing durability, corrosion resistance, low friction, and enhanced aesthetics; common metals: copper, nickel, gold, silver.

Pickling: Removing surface impurities and oxide scales with an acidic solution, often used for cleaning after hot working; may cause some alloys to become brittle.

Powder Coating: Electrostatically applying dry powder and then baking to cure; used in automotive, tool, and military industries.

Grinding: Removing unevenness, scale, or burrs with a grinding wheel; suitable for aluminum, brass, cast iron, carbon steel, stainless steel, etc.

Electropolishing: Removing surface ions through electric current and electrolyte to achieve smoothness, cleanliness, and deburring; commonly used for stainless steel, aluminum, copper, titanium, etc., and applicable in food, medical, and pharmaceutical industries.

Lapping: Removing material by applying abrasive and pressure in a liquid to achieve precise smoothness; used for optical lenses, bearings, gauges, etc.