Stamping Parts need to be coated with a layer of primer before electroplating, which has good electroplating effect and long anticorrosion time.  For example, gold plating: improving conductive touch impedance and enhancing signal transmission.  (Gold is stable and expensive.  ) Silver Plating: Improve Conductive Touch Resistance and Signal Transmission.  (Silver has good function, simple oxidation, conductive after oxidation) Copper plating: As primer, it can improve adhesion and corrosion resistance of electroplated layer.  (Copper is simply oxidized.  After oxidation, verdigris is no longer conductive, so copper plated products must be protected by copper.  ) Nickel plating: used for priming or appearance, which can improve corrosion resistance and wear resistance (chemical nickel plating is more applied in modern technology than chromium plating).  (Note that many electronic products, such as DIN head and N head, no longer use nickel as backing, mainly because nickel has magnetism, which will affect passive intermodulation in electrical functions.  ) Palladium-nickel plating: improves conductive touch impedance, enhances signal transmission, and has higher wear resistance than gold.  Tin-plated lead: improve welding ability and will soon be replaced by other substitutes (because most lead is now replaced by bright tin and fog tin)

How to choose among stamping parts;  Since the operation of the elastic unloading mold is more convenient than that of the fixed unloading mold, the operator can see the feeding action of the strip in the mold, and the elastic unloading plate exerts a flexible force on the strip in the unloading process without damaging the surface of the workpiece, so the elastic unloading plate is adopted as far as possible in the actual planning, and the fixed unloading plate is only used when the unloading force of the elastic unloading plate is insufficient.

Whether the die used by the stamping part manufacturer is to select an elastic discharge plate or a fixed discharge plate depends on the discharge force, which mainly considers the material thickness.  Rockwell Hardness Tester is selected to test the hardness of metal stamping parts.  Small stampings with disordered shapes can be used to test very small planes, but cannot be tested on a common bench Rockwell hardness tester.  Alloy stamping parts are usually used in metal processing and mechanical manufacturing.  Stamping part processing is a kind of processing method to separate or form metal plates by using dies.  Plastic Injection Parts are widely used.