The surface of the spring generally needs to be treated, such as blackening (blue), phosphating, electroplating, spraying, etc. In recent years, the zinc-chromium film "Dacromet" dacromet protective layer has excellent corrosion resistance, which is 7-10 times that of the traditional electroplating layer, so there is no hydrogen embrittlement in the electroplating process. And strong adhesion, especially suitable for surface protection of elastic materials.
The surface of the product treated by Dacromet is silver white. Main characteristics and uses of surface treatment Corrosion resistance characteristics Oxidation treatment "black, bluish" commonly used spring protection is generally kept in the air for 3 months, electroplating is used for higher protection protection in general air medium for 3 months to 2 years. The anti-embroidery ability of phosphating treatment is higher than that of oxidation treatment, and it can withstand high temperature of 400 degree C. It is generally used for the protection of important parts such as artillery gun parts, or as a pre-treatment of other protective layers. Strong corrosion ability, wide application area Strong anti-corrosion ability, especially electrophoretic paint, currently used for pre-treatment of automobile surface special anti-rust oil protection is often used in refrigerator press spring without hydrogen embrittlement, simple process, environmental protection and pollution-free produce.
