What is a sealing cap?

What is a sealing cap The sealing cover (furnace cover) of the electric heating reverberatory furnace only bears the pressure of the gas, and the structure is relatively simple.Vacuum carburizing process of auto parts However, the No. 7 part in the sealing cover of the resistance heating furnace has poor working conditions and strict requirements. It needs to be sealed with the crucible; at the same time, it must be sealed with the riser; during pressure maintenance and pouring, it needs to be sealed with the casting mold. Tightly fit and withstand the impact of the weight of the mold and the opening and closing mechanism. Shaft machining vacuum heat treatmentTherefore, the sealing cover must meet the following requirements: first, it is not easy to deform under the action of external force and heat, and the sealing performance is good; second, the temperature of the joint part with the riser pipe is easy to control; third, it is easy to assemble and fasten. The sealing cover material is generally cast with ductile iron or gray iron, and should not be made of steel.Vacuum carburizing process of auto parts