The galvanized wire is processed by cooling and other technological processes. The cleaning agent used in the cleaning of low carbon steel wire in the production process shall have no effect on the adhesion of the coating and no corrosion to the low carbon steel wire. Does the current density affect the quality of zinc wire?
The acid activated acid solution should be able to remove the corrosion products and oxide film on the surface of low carbon steel wire without over corrosion to the substrate.
Zincate zinc plating or chloride zinc plating can be used in the production of galvanized wire, and appropriate additives should be used to obtain the coating that can meet the requirements of low carbon steel wire standards.
The galvanized wire shall be polished after being polished and plated. Passivation of parts requiring hydrogen removal shall be carried out after hydrogen removal. Before passivation, 1% H2SO4 or 1% hydrochloric acid shall be used for activation for 5-15s.
After degreasing and pickling, the low carbon steel wire is put into the solution of zinc salt, and the negative pole of the electrolytic equipment is connected.
A zinc plate is placed on the opposite side of the work piece and connected to the positive pole of the electrolytic equipment. After the power supply is connected and the current is used to move from the positive pole to the negative pole, a layer of zinc will be deposited on the surface of the low carbon steel wire.
Electrogalvanizing wire uses electrolysis to form a uniform, dense and well combined metal or alloy deposition layer on the surface of the workpiece.
The current density has an important effect on the appearance and corrosion resistance of zinc wire. When high current density is used for electroplating, the corrosion potential increases with the increase of current density, the corrosion rate decreases, and the corrosion resistance increases. The current density affects the quality of zinc plating wire.