Analysis of discoloration of metal terminal plating

The cause of the discoloration of the hardware terminal is related to its structural shape, the performance of the plating solution, and the speed of travel. For these reasons, the following is a solution to the discoloration of the plating layer of the hardware terminal. 1. As far as the structure shape of the hardware terminal is concerned, this is a physical phenomenon, so it is impossible for us to change the structure shape for electroplating. Of course, we cannot change the current distribution of different parts of the hardware terminal during the electroplating process, because this is the characteristic of the current. These are actual problems and are irresistible, so we don't need to consider this reason. 2. The speed of the hardware terminal is an important problem, but it is an easy problem to solve. As long as we adjust the speed regulator of the electroplating line to the appropriate speed. In this way, the plating thickness reaches the standard and is evenly distributed, and the plating layer of the hardware terminal is not easy to change color. 3. The performance of the plating solution is a key issue, and it is an important starting point for us to solve the phenomenon of terminal discoloration. So when we choose the plating solution, we must experiment and compare repeatedly. Because the performance of the plating solution is transformed through a release type, that is, the crystallization of metal ions on the hardware terminal. The crystallization is fine, and the gap between the crystal nucleus and the crystal nucleus is small, so the protective ability of the coating is strong, that is, the corrosion resistance and oxidation resistance are strong, and the coating is not easy to change color. On the contrary, if the crystal is rough, the gap between the crystal nucleus and the crystal nucleus will be large, its protective ability will be poor, and the coating will easily change color. In this way, when we choose the plating solution, we must choose the crystalline plating solution to electroplate the hardware terminal. This article is first published from the original, if reprinted, please indicate the source and author