A few days ago, the Disco metal surface treatment technology was introduced. Here I will introduce another metal surface treatment technology-Dacromet.
Dacromet is a relatively new type of corrosion-resistant coating material among all anti-corrosion materials. Compared with traditional electro-galvanized zinc, Dacromet's corrosion resistance is 7 times or even 10 times that of electro-galvanized, and it has no hydrogen embrittlement. Dacromet is suitable for a wide range of substrate materials, suitable for steel products, copper, zinc alloys, and non-ferrous metals and alloys such as magnesium and aluminum. Indacromet is pollution-free throughout the entire coating process and has been favored by many manufacturers. It is a rare and representative high-tech metal surface in the industry.
Dacromet is especially suitable for high-strength load-bearing parts. Its heat-resistant temperature can reach 300℃. It is especially suitable for high-strength components of automobile and motorcycle engine parts. It has high weather resistance, high chemical resistance, and high resistance. Abrasiveness and adhesion, etc., doomed Dacromet's popularity in metal surface treatment technology.
Dacromet's anti-corrosion mechanism can be divided into three steps:
1. Electrochemical protection of zinc to the substrate
2. After coating and baking, the zinc flakes are superimposed layer by layer, forming countless layers of passivation film
3. The mechanical shielding and protective effect of zinc flakes, aluminum flakes and the chromium salt coating after recombination, and the effect of aluminum inhibiting the "elutriation" of zinc
Traditional metal surface treatment technologies such as electro-galvanization have huge limitations: the coating has poor corrosion resistance and serious pollution during the coating process. The use of Dacromet surface treatment technology will become an inevitability and necessity. This is especially true for some components that pursue higher product quality.