What is vacuum casting（1）

Vacuum casting is the process of using vented molds. The molten metal flows into the mold by air pressure and then removes the air to form a vacuum. This casting method is mainly used for small details or jewelry.

Vacuum modeling

Vacuum modeling is a physical modeling method, combining vacuum technology and sand casting, relying on the plastic film sand mold cavity surface and back seal, using vacuum pump to pump negative pressure, causing the sand mold inside and outside pressure mold sand to form tightly, by placing sand Heart, mold, casting, wait for the casting to solidify, raise the negative pressure or stop the pumping, the mold sand will subsequently collapse and drop. According to the current application in this field, it can be divided into vacuum sealing modeling (V method) and vacuum vacuum casting (FV method). The advantages are:

(1) Moderate vacuum, compact mold cavity and high casting quality.

(2) Vacuum casting with molds Computer simulation analysis can predict the defects of castings. For the design of the design scheme, it can greatly save time and improve production efficiency.