What are the protective layers of the spring?

What are the protective layers of the spring?

  For springs, people generally use electroplating to obtain the protective layer of Xin. It has the characteristics of non-corrosion and can also greatly improve the appearance of the spring. The performance of the spring has also been improved, for example, it can increase the hardness of the surface or increase the ability to resist wear, and improve the performance of thermal stability.

  Other springs use galvanized layer. Zinc is very stable in dry air and hardly changes. Therefore, the galvanized layer is generally used as the anti-corrosion protection layer of the spring under atmospheric conditions, but if it is combined with sulfuric acid and hydrochloric acid , Caustic soda and sulfur trioxide, etc., zinc coating is not recommended.

  If the spring is used in the ocean or in the high-temperature atmosphere, cadmium is a very good choice. It is relatively stable and has very good corrosion resistance. The cadmium coating of the spring is brighter and more beautiful than the zinc coating. It is soft and has very good plasticity, which is more suitable as a protective layer for springs. However, cadmium is relatively scarce, expensive, and has serious environmental pollution. Therefore, it is generally used in aviation, navigation, or electronics industry to be used, which is more restrictive.

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