According to the production workflow of Shenzhen Taida Chuangjian Technology Co., Ltd., the process for silver plating stainless steel nuts involves the following steps:
1. Pre-treatment of the stainless steel nuts involving ultrasonic degreasing and electrolytic degreasing.
2. Acid pickling to remove the surface oxide layer from the stainless steel nuts intended for silver plating.
3. To ensure superior adhesion of the silver plating layer, the stainless steel nuts undergo a pre-plating treatment with nickel sulfamate prior to silver plating.
4. Finally, the nuts are placed into a cyanide silver plating bath for the actual plating process; following silver plating, an acid-base neutralization step is performed.
5. The silver-plated stainless steel nuts are immersed in an anti-tarnishing protective solution to undergo a pore-sealing treatment.
6. Finally, after being air-dried in an oven, the nuts are handed over to the Quality Department for quality inspection of the silver plating, followed by packaging and warehousing.
The primary purpose of silver-plating stainless steel nuts is to prevent thread galling-specifically, the seizing of the internal and external threads-during the tightening of compression fitting bodies and nuts. In other words, the objective of silver-plating is to preclude the phenomenon of thread seizing inherent to austenitic stainless steel. Furthermore, silver-plating the compression fitting nuts significantly reduces the installation torque required, thereby substantially lowering both the operational difficulty and the costs associated with installation for enterprises.
