After mechanical galvanizing, it will be much larger than the original size

Galvanizing can be divided into hot (dip) galvanizing and cold (electrolytic) galvanizing, usually electrogalvanized layer thickness 5 15 m, while hot-dip galvanizing.

Layers are generally more than 65 m and even as high as 100 m.

1. Principle of galvanizing:

Since zinc does not change easily in dry air, whereas in moist air, the surface can.

This produces a very dense basic zinc carbonate film that effectively protects the interior from corrosion. And when for some reason, the plating is damaged and the steel base is not too large, the zinc forms a microbattery with the steel matrix, so that the steel matrix becomes a cathode and is protected.

2. Performance characteristics:

1. The zinc coating is thick, the crystallization is fine, uniform and porous, and the corrosion resistance is good;

2. The zinc layer obtained by electroplating is pure, and the corrosion is slow in acid, alkali and other fogs, which can effectively protect the steel matrix;

3. Zinc plating is made of chromic acid.

After passivation, it forms white, colored, army green, etc., which is beautiful and generous, and has a certain degree of decoration; 4. Because the zinc coating has good ductility.

Therefore, it can be used for various moldings such as cold stamping, rolling, and bending without damaging the plating.

If it is electroplating, the thickness of the coating is generally very small, unless there are special requirements, it should generally be about 15 microns, unless it is precision designed, and the influence of the galvanized layer on the size is generally not considered. But the hot-dip galvanized layer is very thick, and it generally needs to be considered!

After mechanical galvanizing, the size is generally increased by a few microns, but there is no need to consider it.

Galvanizing can be divided into hot (dip) galvanizing and cold (electrolytic) galvanizing, usually the thickness of the electro-galvanized layer is 5 15 m, while the hot-dip galvanizing layer is generally more than 65 m, or even as high as 100 m. Hot-dip galvanizing hot-dip galvanizing covering can hot-dip galvanizing has good power, dense coating, and no organic inclusions.

It depends on how thick you plate! Generally tens to hundreds of miao.

"Galvanized passivation" belongs to metal surface treatment, including galvanizing and passivation of the coated surface.

Galvanizing mainly refers to hot dipping and electroplating.

Hot-dipting can achieve thicker coatings, and the plating thickness of common hot-plating products ranges from 120 grams square meters on both sides to about 300 grams square meters.

The electroplating layer is thinner, and the thickness of common electroplating products ranges from 8 microns to about 20 microns, which is too thick and easy to peel.

In the drawing, the surface treatment standard or the thickness of the coating are generally given according to the use case.

Passivation is generally to soak the plated workpiece with chemical reagents to form a layer of anti-oxidation film to achieve further anti-oxidation, coloring, color fixing and other purposes.