What is Die Casting?
Die casting is the process of injecting liquid metal under high pressure into a high precision mold. It is used to mass produce complex 3 dimensional structures with a detailed surface texture within a single manufacturing step without post treatment. Since the surface of the die is quickly cooled by the mold, the slowly cooling core creates a negative pressure within the cast metal, which makes it more rigid and increases its structural integrity.
How does Die Casting work?
- The mold is opened
- The mold is cleaned and in some cases surface treated or filled with oxygen
- The liquid metal alloy is poured into the injection piston
- The piston is closed and the metal is forced into the mold
- The metal fills the mold and starts to cool
- The mold opens and the casted solid die is removed
- Complex structures within a single manufacturing step
- Very precise
- Very rigid and durable
- Detailed surface
- High volume
- High yield rate
- High tooling/mold costs
- Welding and other post treatment can be problematic
- Depending on process, reduced thermal conductivity
medium to low