The surface of stainless steel springs can be treated with phosphating, spraying, blackening (bluing), electroplating, etc. At present, after research and development, zinc chromium film has excellent corrosion resistance. The corrosion resistance of chromium coating is 7-10 times that of traditional electroplating coating, and it does not have hydrogen embrittlement caused by electroplating process. And it has strong adhesion, especially suitable for surface protection of elastic materials.

After processing, the surface of the product appears silver white. The main characteristics of surface treatment and the use of corrosion-resistant oxidation treatment; Black and blue ordinary spring protection is generally stored in air for 3 months, while higher electroplating protection in general air media is generally stored for 3 months to 2 years. The anti embroidery property of phosphating treatment * can withstand high temperatures of 400 ℃. Generally used for the protection of important parts such as firearms, or for the pre-treatment of other protective layers. Non metallic protective coatings, baking paints, plastic spraying, electrophoretic paints, etc. have strong anti-corrosion capabilities, a wide range of applications, and strong anti-corrosion capabilities, especially electrophoretic paints. At present, specialized rust proof oil for automotive surface protection pretreatment is commonly used for refrigerator springs, which is hydrogen free, has a simple process, and is environmentally friendly and pollution-free.