Posted on 2018-05-23 The protective effect of dacromet layer on steel matrix can be summarized as follows:
1. Barrier effect: due to the overlapping of zinc and aluminum layer, the process of reaching the matrix of corrosion media such as water and oxygen can be prevented.
2. Passivation: in dacro process, chromic acid reacts with zinc, aluminum powder and matrix metal to produce dense passivation film, and this passivation film has good corrosion resistance.
3. Cathodic protection: the main protective effect of zinc-alumina coating is the same as that of the zinc coating, which is the cathodic protection of the substrate.
Changzhou junhe zinc chrome dacromet coating is a kind of science and technology by zinc powder, aluminum powder, chromic acid and deionized water as the main composition of new type anticorrosive coating, surface of a single color, only silver and silver, is not suitable for individualized need of the auto industry development. However, different colors can be obtained by post-processing or composite coating to improve the decoration and matching of the truck parts.
Post time: Jan-13-2022