The surface of the spring can generally be treated, such as blackening (blue), phosphating, electroplating, plastic 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 plating layer. There is no hydrogen embrittlement in the electroplating process. And strong adhesion, especially suitable for surface protection of elastic materials.
Dacromet treated products have a silvery white surface. Main characteristics and uses of surface treatment Corrosion resistance Oxidation treatment <blackening, bluening> Common spring protection is generally kept in the air for 3 months, and electroplating is used for higher protection in general air medium for 3 months to 2 years. Phosphating treatment has higher embroidery resistance than oxidation treatment, and can withstand high temperature of 400 ℃. It is generally used for the protection of important parts such as artillery gun parts, or as a pretreatment of other protective layers. Non-metallic protective coatings, paints, plastic sprays, electrophoretic paints, etc. Strong ability, wide application area, strong anti-corrosion ability, especially for electrophoretic paint. Currently, special anti-rust oil protection for pre-treatment of automobile surfaces is often used in refrigerator compressor springs without hydrogen embrittlement, simple process, environmental protection and no pollution.