Common steel surface treatment process

1、 Galvanizing process of iron and steel parts acid zinc plating
Degreasing → derusting →│ → purification → drying └ alkaline zinc plating
2、 Blackening process of iron and steel parts at room temperature
Degreasing → rust removing → blackening at room temperature
3、 Phosphating process of iron and steel parts: degreasing, rust removing, surface adjusting, phosphating and coating
4、 ABS / PC plastic electroplating process
Degreasing → hydrophilic → pre coarsening (PC ≥ 50%) → roughening → neutralization → finishing → activation → degumming → electroless nickel deposition → coke copper plating → copper acid plating → semi bright nickel plating → high sulfur nickel plating → bright nickel plating → sealing → chromium plating
5、 PCB electroplating process
Degreasing → roughening → prepreg → activation → degumming → electroless copper plating → acid degreasing → micro etching → low stress nickel plating → bright nickel plating → gold plating → drying
6、 Multi layer electroplating process of iron and steel parts
Oil removal → rust removal → copper cyanide plating → copper acid plating → semi bright nickel plating → high sulfur nickel plating → bright nickel plating → nickel sealing → chromium plating