Overview Of Vacuum Casting

Step 3: volume production
The vacuum casting resin and pigment are mixed and poured into the silicone mold, where they are fully mixed and degassed in vacuum for 50-60 seconds during the automatic pouring process. Next, by eliminating air pockets inside the tool, vacuum technology allows gravity to do all the work of filling the mold. The parts are then transferred to the oven for curing. Curing time also depends on part size. When it hardens, the casting can be removed from the mold. Once the casting is complete, the sprue and risers can be removed, and the final process is to trim the edges of the raw material and apply additional sanding and polishing with grit sandpaper. The first machined part after completion must be inspected for quality. If the first piece is qualified, production can continue. This process can be repeated 20 to 30 times on average. Exceeding these times will cause the mold to gradually deform and affect the dimensional accuracy.

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