How long is the salt spray test for galvanizing?

The required time for salt spray testing of zinc electroplating is usually 24 hours for white zinc, 72 hours for color zinc, and 96 hours for black zinc. If the salt spray testing time exceeds the above, sealing agent treatment is generally used.

Electrogalvanizing, also known as zero galvanizing in the industry, is the process of using electrolysis to form a uniform, dense, and well bonded metal or alloy deposit layer on the surface of the workpiece.

Compared to other metals, zinc is a relatively inexpensive and easy to coat metal, belonging to the low value anti-corrosion electroplating layer. It is widely used to protect steel parts, especially to prevent atmospheric corrosion.

Plating technology includes slot plating (or hanging plating), barrel plating (suitable for small parts), blue plating, automatic plating, and continuous plating (suitable for wire and strip).