行业知识

Dacromet coated rust prevention principle

Edit:Xinxiang Chui Auto Parts Co., Ltd.UpDate:2018-06-28

Dacromet is a new type of process that is a good protection for metal surfaces. Its other name is called zinc-chromium coating.

Below, Xiaobian will briefly introduce you to the principle of anti-rust applied to the Dacromet coating:

First, zinc powder has a controlled self-sacrifice and self-protection effect.

Secondly, chromic acid can form a dense oxide film on the surface of the workpiece without being easily corroded.

Finally, dozens of layers of zinc and aluminum sheets can form a good coating and form a good shielding effect. This increases the path that the intruder reaches the surface of the workpiece, effectively protecting it.

The Dacromet treatment consists of a piece of zinc flakes each covered with a chromic acid compound. This material has a moderate electrical conductivity and therefore has excellent corrosion resistance.

The advantages of Dacromet coating are:

The product has high cost performance, good suspension property and good dispersion performance. The product has good adhesion, high surface hardness, and strong scratch resistance during storage and transportation.