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Vacuum Die Casting


vacuum die casting

The vacuum dies casting, as this name indicates, is a casting method in which the major processes including melting, pouring, solidifying are performed inside the vacuum chamber. The vacuum is able to minimize the gas content of the product and prevent further oxidation from happening to the metal. This is a quite expansive technic, manufacturing the special alloy steel and oxidate-like titanium casting part can use this method to achieve a very high specification requirement.



Vacuum Die Casting Process

The vacuum dies casting is a further modified technic to vacuum casting. It is a die-casting method but the main process performs after a certain degree of vacuum building up. The degree of vacuum is about to be 50~80 kPa. In practice, there are 2 major kinds of methods for vacuum die casting:


Vacuum Die Casting VS Traditional Casting

Compared with traditional casting, the same thing is: both are made by pouring molten or semi-molten metal into the mold, and then the required part is obtained by cooling and solidifying the metal.

Differences between vacuum die casting and traditional casting.


Advantages of Vacuum Die Casting

Vacuum die casting molding is a physical molding method, which combines vacuum technology with sand casting, relying on plastic film to seal the cavity surface and the back of the sand mold. With the help of vacuum pumping to generate negative pressure, it will result in the pressure difference inside and outside the sand mold so that the mold sand is tightly formed.

After placing the sand core, closing the mold, casting, waiting for the casting to solidify, lifting the negative pressure, or stopping pumping, the mold sand will then collapse and get the casting. 

According to the current field of application, vacuum die casting can be mainly divided into vacuum sealed mold making (V method) and solid vacuum casting (FV method). The advantages are:



Metal Casting

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