Zhengzhou Dacromet coating has a special film structure, excellent corrosion resistance, no hydrogen embrittlement, no environmental pollution, etc., and has been used in industrialized countries, automobiles, electric power, construction, ships, railways, bridges and highway guardrails in various fields. Widely used. Dacromet coating has many excellent properties, but it also has disadvantages. Although most of the Cr6 additions in the Dacromet coating participate in the reaction process and convert to Cr3 additions, the Dacromet coating contains about 2% Cr6 plus. Bake curing process. However, a small amount of chromium remains in the coating in the form of soluble hexavalent chromium. Cr6 plus is a well-known harmful substance, highly toxic and carcinogenic, and will affect the human living environment Cause serious pollution. At present, countries around the world are restricting its use.
With the enhancement of global environmental awareness, chrome-free Zhengzhou Dacromet surface treatment has become a trend, and chrome-free electroplating, chrome-free passivation and chrome-free coating have begun to become the mainstream processing technology. Therefore, Zhengzhou Dacromet manufacturers must Research and develop a chromium-free Dacromet coating technology to replace the chromium-containing Dacromet coating.
