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Why do auto parts use Dacromet coating?

Edit:Xinxiang Chui Auto Parts Co., Ltd.UpDate:2019-07-02

Cars are a common means of transportation, and many people own their own private cars. We have found that now everyone has begun to use Dacromet coating as an anti-corrosion process for special auto parts, and this process has gradually replaced Electrogalvanizing and physical coatings are becoming more and more widely used. So why do all the auto parts on the market use Dacromet coating? This has to start with the advantages of Dacromet coating.
1, Dacromet coating has good anti-corrosion protection of heat-resistant load parts. Some automotive parts have high operating temperature, and the surface protection layer of these parts needs to have good corrosion resistance at high temperature. Dacromet The curing temperature of the coating is about 300 degrees. The chromic acid polymer in the coating does not contain crystal water, and the coating is not easily damaged at high temperatures, and has excellent high humidity and corrosion resistance.

2. Dacromet coating is more suitable for corrosion protection of high-strength steel parts. High-strength steel has the risk of hydrogen embrittlement during pickling and electroplating. Although hydrogen can be driven by heat treatment, it is difficult to completely drive hydrogen. Dacromet coating The layer process does not require pickling and activation, does not cause electrochemical reactions of hydrogen evolution, and avoids hydrogen embrittlement, so it is especially suitable for corrosion protection of high-strength steel parts and other components.
To sum up, Dacromet coating has good corrosion resistance and is suitable for the anticorrosion of some industrial metal parts, such as the anticorrosion treatment of special auto parts.