Hot Dip Galvanized Wire And Cold Wire Plating Distinction
Cold galvanizing is also called the electric galvanized, it is using electrolytic equipment fitting after degreasing, pickling, into the composition of zinc salt in the solution, and connect the cathode electrolytic equipment, across the tube placed zinco, connected to the anode electrolytic equipment, power supply is connected using current from the positive to the negative directional moving deposits a layer of zinc on the pipe fittings, cold is plated fittings galvanized after processing. Cold galvanizing (electric galvanized) : it is in the plating bath by current unipolarity zinc plating on metal surface gradually, production speed is slow, uniform coating, the thickness of thin, usually only 3-15 microns, look bright, smooth, beautiful degree is high, corrosion resistance is poor, usually a few months will rust.
Hot galvanizing is developed by older hot plating method, French apply hot galvanizing industry since 1836, has a history of one hundred and seventy years. Hot dip galvanizing industry, however, is nearly 30 years along with the rapid development of the cold rolled steel strip has been large-scale development.
Hot galvanized sheet production process mainly includes: the original plate preparation to processing before plating, hot dip plating to plating processing, finished product inspection. According to the habits often based on plating pretreatment method.