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What is the effect of inconsistent plating color of connector?

The plating of connector terminals is mostly gold plating. The high-quality gold plating layer is generally uniform in thickness, color and luster. If the color of connector gold coating is inconsistent with that of normal gold coating, or the color of gold coating of different parts in the same supporting product is different, it is usually affected by some factors:
1. Influence of impurities in gold plating raw materials
When terminals are plated, if the impurities brought in by the chemical materials added to the plating solution exceed the use standard of the plating solution, the color and brightness of the gold layer will be affected. For example, the gold layer is darkened and blossomed.
2. Gold plating current density is too high
When the total area of the plating bath parts in the gold plating process is calculated incorrectly, the value is larger than the actual surface area, the amount of gold plating current is too large, or the amplitude is too small when the vibration plating gold is used, resulting in rough crystallization of the gold coating of the plating piece, making the gold coating red.
3. Aging of gold plating solution
In the process of product manufacturing, if the gold plating solution is used for too long, impurities in the plating solution will accumulate excessively, resulting in abnormal color of the gold layer of the gold plating product.
4. The alloy content in the hard gold coating changes
If the purpose of electroplating is to improve the hardness and wear resistance of the terminal itself, the technology of hard gold plating will be used. Gold cobalt alloy and gold nickel alloy are commonly used materials. When the content of cobalt and nickel in the plating solution changes, the color of the gold coating will change, making the same batch of products provided to customers have different colors of the gold coating.
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