1. Electro -galvanized process process

Take galvanized iron alloy as an example. The process process is as follows:

Chemical oil removal → hot water washing → water washing → electrical removal of oil → hot water washing → water washing → strong corrosion → water washing → electroplating iron alloy → water washing → out of light → passivation → water washing → drying.

2. Electro -galvanized liquid plating allocation

Preparation of plating liquid (take LL as an example):

(1) First add 1/3 of pure water in the plating groove;

(2) Sodium hydroxide with 1/3 of pure water (hot when dissolved, be careful);

(3) Use a small amount of water to adjust the zinc oxide into a paste, and then add more pure water to stir it fully. Slowly add the stirred zinc oxide to the dissolved sodium hydroxide solution, stir it while adding it to make it fully complex and add it to

(4) When the temperature of the plating fluid drops below 30 ° C, add 85G baser to stir well;

(5) Solk 15ml Base F in 15G Base R, and then add the mixture to the plating groove;

(6) Add 4ml H -O624 to stir well; add water to the volume of the assembly;

(7) Add the light brightener ZF-105A, ZF-105B; fully stir.

3. Electro -galvanized factors

(1) The effect of zinc content

The zinc content is too high, the ranging range is narrow, and it is easy to obtain thick coating. The iron content in the plating layer is reduced; the zinc content is too low and the bright range is wide. It takes a longer time to achieve the required thickness, and the iron content in the plating layer is high.

(2) Impact of sodium hydroxide

When the content of sodium hydroxide is too high, the high temperature operation is easy to burnt; when the content of sodium hydroxide is too low, the dispersing ability is poor.