Pre-treatment: First, the substrate is cleaned, degreased and descaled to ensure that the surface of the substrate is clean and free of pollution, which is conducive to the subsequent plating operation.
Grain oversize: Grain oversize is one of the common problems in the use of iron electroplated zinc-nickel alloy. The grain size is too large which leads to the reduction of the strength of the material and makes it easy to rupture and deform.