Welding process of semi martensitic stainless steel pneumatic ball valve seat Semi martensitic stainless steel, also called martensitic precipitation hardening stainless steel, representative brand: 17-4PH. The results of many tests show that the ball is made of ZG2Cr13, the surface of which is welded with Stellite NO. 6 alloy, and the valve seat is made of 17-4PH precipitation hardening stainless steel. During the rotation of the ball, the friction pair between the valve seat and the ball can be reduced.; Locked death; The occurrence of this phenomenon greatly improves the service performance of the hard seal pneumatic ball valve. Because 17-4PH is a kind of material that is seldom used, the manufacturing process of valve seat is special, so I will discuss the production process of 17-4PH valve seat with you.

The disassembled individual parts can be cleaned by immersion. The metal parts that have not been decomposed can be scrubbed with clean, fine and clean silk cloth impregnated with cleaning agent (to avoid fiber falling off and adhering to the parts). All grease, dirt, glue and dust adhered to the wall surface must be removed during cleaning.
The non-metallic parts shall be taken out of the cleaning agent immediately after cleaning, and shall not be soaked for a long time.