Benefits Of Vacuum Die-casting

Vacuum die casting is a relatively new process when compared to the hot and cold chamber methods. It is meant to give added strength to casts and less porosity. Similar to low-pressure casting, the mold is placed above the bath of molten metal where the cylinder chamber acts as a vacuum to force the liquid into the mold cavity.

A point to remember and one of the bigger problems associated with die-casting is porosity. This is caused when gas enters the molten metal to cause turbulence. Once the cast sets, it becomes porous which makes it more brittle and prone to cracks.

With vacuum die-casting, the turbulence is reduced and the cast is strengthened. This generates less waste as do-overs become more infrequent and productivity increases. In terms of structural and automotive applications, the importance of reduced porosity is all too vital.

Vacuum die-cast components can be made to be thinner and more complex compared to other processes. Surface quality is also increased and rejections are reduced. This translates into cost-effectiveness, high production and less waste as stated before.

Components that need to be painted or powder-coated stand to gain much with vacuum die-casting as porous surfaces can lead to uneven finishes. Customer satisfaction is guaranteed and the number of dissatisfied returns and replacements is reduced.