galvanization

Cold galvanizing

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 zinc plate, 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.

Mechanical galvanizing

Equipped with a plating, glass ball, zinc powder, water, and the rotation of the promoter in the barrel, as the impact of medium with glass ball rotation of roller, and the friction on the surface of the plating and hammer produces mechanical energy, in under the action of chemical promoter, will be plated with zinc powder "cold welding" to plating on the surface, a smooth, uniform and meticulous with a certain thickness of coating.

ASTM b695-2000 and military c-81562 mechanical galvanizing standards are adopted.

Hot dip galvanized

The main method of galvanizing the surface of steel plate is hot-dip galvanizing.

Hot dip galvanizing is developed from the older method of hot dip galvanizing, which has been used in industry in France for 170 years since 1836.However, the hot dip galvanizing industry has been developed on a large scale in the past 30 years with the rapid development of cold rolled strip steel.

The production process of hot galvanized plate mainly includes: preparation of the original plate → pre-plating treatment → hot dip plating → post-plating treatment → finished product inspection, etc.According to the habits often depending on the plating pretreatment method, the hot galvanizing technology divided into two major categories of annealing in annealing and line outside the lines, the wet (single hot dip galvanized steel method), the line outside the annealing (single method of hot dip galvanized steel), galvanized Wheeling method (Wheeling) (strip continuous hot galvanizing process), annealing, Jimmy's method (Sendzimir) within (method) of shielding gas, improvement, Jimmy's method, steel union method (with Japanese kawasaki method), Silas (Selas) method and Sharon (Sharon) method.