Definition of Die Casting:
Die casting is a process of producing metal part by forcing molten metal at high pressure into the mold cavity.
Mold cavity is made from two hardened tool steel die. This mold cavity is previously machined to required die casting product.
Working of die casting is based on injection process.
Type of Die Casting:
- Cold Chamber Die Casting
- Hot Chamber Die Casting
Process of Die Casting:
1. Clamping
In this step both die cavity is cleaned and then clamp with high pressure.
2. Injection
Molten metal is injected by force into the die cavity using very high pressure. This high pressure is hold till time required for solidify.
3. Cooling
After injecting the molten metal, it must required time for solidify and cool. During this process die can not unclamp.
4. Ejection
When metal is solidify then die cavity is unclamp and ejection mechanism push casting out from die.
5. Trimming
In this process, excess material is removed.
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