Opposite Spring, Bending Spring

Most springs are used in different types of corrosive environments. Due to the effect of chemical corrosion and electrochemical corrosion, the surface of springs will be corroded to different degrees, which will cause premature damage of springs. Therefore, anti-corrosion treatment must be carried out. The anti-corrosion treatment of the spring is to cover the surface of the spring with anti-corrosion materials to form a protective layer, which separates the spring from the corrosive medium to achieve the purpose of anti-corrosion.

There are three common spring anti-corrosion methods: electroplating, oxidation and painting. Electroplating is an effective method to obtain the protective layer on the metal surface Spring Main methods of anti-corrosion treatment. It is characterized by good adhesion, fine and compact crystallization, small porosity, uniform thickness and good physical, chemical and mechanical functions. Electroplating includes zinc plating, chromium plating, copper plating, tin plating and nickel plating. The most common application is zinc plating.

The galvanized surface of spring is generally white or colored. Zinc hardly changes in dry air. In humid air or water containing carbon dioxide, white zinc oxide film will be produced, which can play a role of corrosion inhibition. The zinc coating is suitable for use in various atmospheric conditions, but the corrosion resistance of zinc is poor in aqueous solutions containing acid, alkali and salt and in pure marine atmospheric conditions.