Wanchang analyzes the abnormal gold plating of pogopin connector on spring pin

　　The material of the spring needle and needle tube of pogopin connector is usually brass. Copper is a very active metal. When exposed to air, it will react with oxygen in the air, and the surface will be oxidized. Therefore, the surface of pogopin spring pins must be electroplated; gold plating is usually used on the surface of pogopin spring pins, and some of them require nickel plating, zinc plating, silver plating or plating. Now with wan chang to understand some of the pogopin spring pin in the gold plating process will encounter some problems.

　　Gold plating technology plays a very important role in the electroplating of pogopin spring needles. Now, in addition to some spring needles with material, the barrel plating and vibration plating are still used for the gold plating in the holes of most of the pin hole parts. In recent years, the volume of connector has become more and more miniaturized. The quality problem of gold plating in pinhole parts is becoming more and more prominent. The quality requirements of customers for gold layer are also becoming higher and higher. Some users are even very picky about the appearance quality of gold layer. In order to ensure the quality binding force of gold plating layer of connector, it is necessary to The key to improve the quality of gold plating for connectors.

　　1. Abnormal color of gold plating layer of spring pin

　　The color of gold plating layer of spring needle is different from that of normal gold layer, or the color of gold layer of different parts in the same matching product is different. This is one of the most common problems in electroplating.

　　2. Influence of impurities in gold plating raw material of spring needle

　　When the impurities brought in by the chemical materials added into the plating bath exceed the tolerance of the gold plating solution, the color and brightness of the gold layer will be affected quickly. If there are organic impurities, the gold layer will be darkened and flowered. The position of darkening and blooming is not fixed during the inspection of Hall cell test piece. If the metal impurities interfere, the effective range of current density will gradually narrow. The Hall cell test shows that the current density of the test piece is not bright at the low end or not bright at the high end, and the low end cannot be plated. If the coating is reacted to the plating piece, the coating is red or black, and the color change in the hole is also very obvious.

　　3. The gold plating current density of spring needle is too high

　　Because of the calculation error of the total area of the plating bath parts, its value is larger than the actual surface area, so that the gold plating current is too large, or the amplitude is too small when using vibration gold plating, so that all or part of the gold plating in the bath crystallizes rough, and the gold layer will be red by visual inspection.

　　Shenzhen Witchip Electronics Co., Ltd.

　　Shenzhen Witchip Electronics Co., Ltd. was established in 2004 and is located in Longgang District, Shenzhen. It has an independent factory building with an area of approximately 6,800 square meters. Integrating research and development, manufacturing, and sales, it is mainly engaged in the research and development and production of various POGOPIN and POGOPIN connectors, shrapnel terminals, and CNC automatic lathe parts. It can also be produced and processed according to customer samples. There are more than 4000 product categories for customers to choose. The products are widely used in various electronic products such as drones, smart robots, smart wearable products, 5G communication products, smart home products, education/entertainment electronics, medical equipment products, automotive electronics, mobile phone consumer electronics, etc.

　　The company’s R&D and designers are experienced engineering technicians with nearly 20 years of experience in the industry. The total number of employees is 120, with 80 CNC lathes, 100 automatic lathes, 80 assembly equipment, and projectors. Salt spray tester, life tester, current tester, high temperature tester, load dynamic impedance tester. In order to comply with the demand for market quality

　　The company passed the ISO9001 quality system certification in 2007 and successively passed the ISO14001 environmental system certification in 2009. It has 8 independent patents, which provide a solid guarantee for quality and delivery.

　　The company has always maintained a leading advantage in the field of Pogopin connector products, adhering to the business philosophy of "gratefulness, innovation, and creating value for customers", and has been recognized by some well-known companies at home and abroad, becoming their excellent connector supplier. Continuously win the trust of customers with quality and service, and establish a good reputation.

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