Process analysis and implementation key points of heat treatment using high-frequency heating equipment for valve discs

The specific process for heat treatment of the valve plate using high-frequency induction heating equipment is as follows:

1. Since the valve plates are thin, they must be hung vertically for heating and cooling during the heating process. There must be no collision between the valve plates or with other objects. Circulating cooling oil is used to ensure temperature consistency.

2. During the tempering process, the valve plates are put into a suitable mold and pressurized, and the bolts are tightened. If there is no gap between the valve plates, the flatness can be met. The residual salt on the surface of the valve plates should be cleaned. If necessary, Perform shot peening or shot blasting.

3. The requirements for the normalizing process are to ensure that the temperature and time meet the requirements and to cool quickly after coming out of the oven. If the room temperature is high (higher than 25°C), it is recommended to use blowing or spray cooling. Only in this way can the banding existing in the raw materials be eliminated. organization to obtain the required mechanical properties.