Low pressure casting is a casting method in which liquid alloy is pressed into the mold cavity from bottom to top under pressure and solidified under pressure to obtain castings. Let's learn more about it!
The principle of low-pressure casting is that dry compressed air or inert gas is introduced into the sealed crucible to make the metal liquid smoothly fill the mold from bottom to top along the riser through the sprue with the help of the pressure acting on the metal liquid level, and the mold filling pressure is generally 20 ~ 60kpa.
The production process of low pressure casting includes the following four basic processes:
1. Metal melting and preparation of mold or mold.
2. Preparation before pouring: including crucible sealing, slag removal in the riser, measurement of liquid level height, sealing test, mold matching, fastening of mold or mold, etc.
3. Pouring: including liquid lifting, mold filling, pressurization, solidification, pressure relief and cooling.
4. Demoulding: including loose demoulding and taking out castings.
The above content is the principle and production process of low-pressure casting. In the casting process, the staff must carry out according to the formal operation mode to ensure personal safety.
Editing: xyq