China M19 Assembled IP68 Waterproof Circular Connector 3Pin Factory
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How to ensure the gold-plated ingredients of the M19 Connector
The needle of the spring thimble is a part that is deep-turned. It usually needs to be subjected to nickel plating and gold plating in the process of electroplating. First, it needs to be treated with nickel. The usual thickness is 1~2 microns (as usual, 40u) = 1 micron. Gold plating is a common surface treatment layer with a thickness of 0.1 to 1.0 μm. For blind holes with a small diameter and a long hole, it poses a challenge when plating the inner wall. Generally, the Shenzhen spring thimble manufacturer will open the side hole at the bottom end. Allow the plating solution to form a reflow at the bottom of the tube to ensure the precipitation of the gold at the bottom of the inner wall. Or we will inform the customer of the basic proportion of the design: length and tube inner diameter.
The needle shaft of the spring thimble is basically gold-plated. It is the preferred treatment method for Shenzhen spring thimble manufacturers because gold has excellent electrical conductivity and oxidation resistance. In addition, the thickness of gold plating absolutely affects the life of the whole product. Because of cost considerations, Shenzhen spring thimble manufacturers will choose the thickness of nickel bottom treatment and gold plating. As some other plating solutions, such as rhodium plating, palladium and some noble materials, different products have different needs.
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