There are two kinds of gold plating, one is homogeneous gold plating and the other is heterogeneous gold plating. Homogeneous gold plating refers to gold plating on the surface of gold jewelry, and its significance lies in improving the brightness and color of jewelry.
Gold plating of heterogeneous materials refers to gold plating on the surface of non-gold materials, such as silver gold plating and copper gold plating. Its significance lies in replacing the color of plating material with the luster of gold, thus improving the decorative effect of jewelry.
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Gold plating can be divided into cyanide-free gold plating and cyanide-free gold plating according to its technological characteristics. Cyanide plating solution is divided into high cyanide plating solution and low cyanide plating solution. Sulfite gold plating solution is widely used in cyanide-free plating solution.
According to the concentration of gold plating solution, the gold plating solution with water is generally acidic and its gold content is low. This plating solution has low cost, so the loss caused by the solution is less.
The gold layer obtained by this plating solution is blue-gold color, which is especially suitable for electroplating small hardware with large batch and low processing cost. The plating solution is divided according to its function. Pre-gold plating refers to pre-gold plating in a specific gold plating solution before normal gold plating.