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RC Connectors Selective Gold Plating

RC Connectors Selective gold plating

Rc connector plating knowledge

In the connector plating, due to contact with a higher electrical performance requirements, the gold plating process in the connector plating occupies a significant important position.Currently in addition to the part of the material with a selective electroless plating process, the rest of the large number of needles The hole in the hole is still the use of barrel plating and vibration plating in recent years, the connector size to the development of more and more miniaturization, the pinhole parts of the hole gold plating quality problems become increasingly prominent, the user on the gold layer The quality of the requirements are also getting higher and higher, some users of the appearance of the quality of the gold layer and even reached a very critical degree.In order to ensure the quality of the connector gold-plated layer of these common quality problems are always the key to improve the quality of the plug-in gold plating. The following questions on the quality of the reasons for each sub-board to provide you with the discussion.

2.1 gold layer color is not normal

The color of the gold layer of the connector is inconsistent with the color of the normal gold layer, or the color of the gold layer of the different parts of the same product is different. The reason for this problem is:

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2.1.1 impact of gold-plated raw materials impurities

When the chemical impurities into the bath into the impurities than the gold plating after the degree of tolerance will soon affect the color and brightness of the gold layer.If the impact of organic impurities will appear gold layer of dark and hair phenomenon, Hao Seoul slot test If the metal impurity interference will cause the current density of the effective range narrowed, Hao Seoul tank test shows the current density of the test piece is not low-end low-end or high-end plating is not bright low-end plating on the Reflected to the plating on the coating is red or even black, the hole of the color changes more obvious.

2.1.1 Gold-plated current density is too large

As the total area of the plating tank calculation error is greater than the actual surface area, so that the gold plating current is too large, or the use of vibration gold plating when its amplitude is too small, so that all or part of the tank plating gold plating rough, Layer redness.

2.1.3 Aging of gold plating solution

Gold plating solution is too long to use excessive accumulation of impurities in the plating layer will inevitably cause the gold layer color is not normal.

2.1.4 alloy content in hard gold coating changes

In order to improve the hardness of the connector and the degree of wear, the connector gold plating generally use hard gold plating process which uses more gold cobalt alloy and gold and nickel alloy.When the bath of cobalt and nickel content changes will cause Gold plating color change if the cobalt content in the bath is too high gold layer color will be red; if the nickel content of the bath is too high metal color will be shallow; if the bath in this change is too large and the same product The parts are not in the same slot gold, so there will be provided to the user the same batch of product gold layer color is not the same phenomenon.

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