What are the surface treatment methods of ball valve?
The ball valve has been widely used in industrial applications due to its small flow resistance, a wide range of pressure and temperature use range, good sealing performance, short opening and closing time, easy installation and other advantages. The ball is an important part that plays a key role in the opening and closing function for the ball valve. In order to enhance the sealing performance and hardness of the ball, it is necessary to pre-treat the surface of the ball. So what do you know about common surface treatments for the ball body? The common treatment methods for the surface of the sphere are electroplating, cold coating, spraying and nitriding. The following is the surface treatment method of the ball I often encounter in my work. It is incomplete, but it is guaranteed to be commonly used. 1. Spray welding of cobalt-based alloy, which is generally used. The common cobalt-based alloy on the ball valve is STL20,38~40HCR; TL1：48~50HCR； 2. Nitriding. The es...