Vacuum Casting Process
Setting the forming film
Cover the mold with film
A thin plastic film with high elongation and plastic deformation rate is heated and softened with a heater, and then placed over a wooden mold set on the casting line.
Film Forming
Adhere the film to the mold
Tiny holes are drilled into the wooden mold, through which air is sucked in to make the film adhere to the shape of the mold, and a mold frame is then set on top.
Sand filling
Fill the formwork with sand
Fill with finely grained sand and place a protective film over the sand.
Demolding
Separating the wooden and sand molds
The air inside the sand mold is sucked out and the mold is then pulled up, creating a reduced pressure casting mold (sand mold).
Match the top and bottom molds
Casting mold (sand mold) completed
Align the upper and lower molds while maintaining the reduced pressure.
Disassembly
Dismantle the mold and remove the product (Complete)
When the suction is stopped and the pressure inside the flask is returned to normal, the sand collapses and only the aluminum casting remains, and casting is complete. Since no binder is used for the casting sand, it is in a loose state. This means that there is no need to take apart the mold.