行业知识

Analysis of the protective effect of the technology of Rockwell coating on the steel matrix

Edit:Xinxiang Chui Auto Parts Co., Ltd.UpDate:2018-03-20

  Dacromet CoatingTechnology is a new technology, according to the different ways of coating and can be divided into dry, spraying, brushing and other methods.

When deciding which way to choose, the first thing to consider is the coating on the steel barrel is focused on functional or decorative, but also to consider coating thickness control, production speed, product shape and the required quality, carefully consider the above questions will determine which way is more suitable for you.

Today, we'll talk about the protective effect of the coating on the iron and steel matrix, which can be summed up in the following points:

1, the barrier effect: Because flake zinc, aluminum layer overlap, hinder the water, oxygen and other corrosive medium to the substrate process, can play a kind of isolation shielding role;

2, passivation Effect: In the process of processing, chromic acid and zinc, aluminum powder and matrix metal chemical reaction, the formation of compact passivation film, the passivation film has good corrosion resistance;

3, cathodic protection: Zinc-aluminum-chromium coating is the main protective effect and galvanized layer, the main is the cathode protection of the substrate.