As a connector PIN pin, four square pin, MR16 pin production supplier, many times by the customer to ask about the quality of the product, in fact, the quality of the product comes from three major blocks: the choice of raw materials, production research and development technology and surface plating process of the gatekeeper. Grasp these three passes, the product is produced, its quality is almost OK. And its last program is also a vital link - PIN pins, the four policy, MR16 pins and other metal parts of the plating process, is that each of us need to understand the implementation of the person. So, what are the processes for plating metal parts such as PIN pins, four-pin pins, MR16 pins, etc.?

1.Purpose of plating: To strengthen the corrosion resistance of metal parts, prolong service life, and reduce contact resistance.

　Surface plating materials mainly include: gold, tin, nickel, silver and so on.

2.Plating procedure

　(1).Degreasing :Material degreasing: Remove oil, dust, oxides and other impurities on the surface of the parts before plating.

　(2).Active Neutralization :Active Neutralization and Rinsing: Removes oxides, alkalis and other residues from the surface of the plated parts left over from degreasing.

　(3).Plating substrate: Nickel is the most commonly used plating substrate, which effectively prevents intermetallic movement and enhances abrasion resistance.

　(4).Water Rinse: Remove the plating solution left in the previous station to avoid mixing with the plating solution in the next station.

　(5).Surface gold plating: Pure gold surface is not easy to form a thin layer of oxides, has a stable contact cathodic resistance, good friction characteristics and resistance to high temperatures. Gold plating is not suitable for the soldering part of SMT. The cost of gold plating is high.

　(6).Tin plating: Excellent corrosion resistance (Tin is easily oxidized, but the oxide layer is very thin and does not grow further, so it can be used as a thin corrosion-resistant layer. The oxidized layer is fragile and easily transferred by contact force and friction.) Good solderability and low cost.

　(7).Connector PIN pin plating method: continuous plating, hanging plating, roll plating or divided into, dip plating (plating comprehensive), brush plating (plating partial), spot plating (plating partial)

　(8).Drying: Drying is the last process in the plating line, i.e., removing the water left on the plated parts.

　(9).Receiving: Checking and receiving materials after plating.

Dongguan Qunhua Precision Hardware Co., Ltd. is a professional customized connector PIN pins, four pins, MR16 pins, copper pins, and other industry connector pins of hardware products and hardware stamping strength of the manufacturers. 10 years, we focus on one thing: innovative R & D technology to the majority of connector manufacturers to provide qualified connector PIN pin products, and strive to become a stronger comprehensive strength of domestic We strive to become a strong comprehensive strength of the domestic hardware products and hardware stamping parts manufacturing service provider.