1. Electroplating, immersing the electroplated part in an aqueous solution containing the deposited metal compound, passing an electric current through the electroplating solution, and depositing and depositing the electroplated metal on the part. Usually, electroplating is done by galvanizing, copper, nickel, chromium, copper, nickel alloys, etc., and sometimes includes boil black (blue), phosphating, etc.
2. Mechanical galvanizing, which affects the surface of the product by electroplating metal particles and cold welding the coating to the surface of the product. Generally, Tapping screws are mostly galvanized, but they are used for hot dip galvanizing in hex wood screws such as power and highway. The cost of electroplating is generally 0.6-0.8 yuan per kilogram, while the hot-dip galvanizing is generally 1.5-2 yuan/kg, and the cost is higher. Plating effect: Plating quality is based on its corrosion resistance, followed by appearance. Corrosion resistance is to simulate the working environment of the product, set as the test conditions, and carry out the corrosion test.
3. The alloy catalysis can be heated to about 83°C at room temperature for processing. During processing, the metal is usually soaked for 15-20 minutes. After soaking, wash with water and dry naturally. Sealed and stored at normal temperature and pressure for up to 3-5 years without spoilage. In extreme environments such as high temperature and high pressure, the catalytic product still has high corrosion resistance and wear resistance.
