SEMI-SOLID/SQUEEZE CASTING
Molten metal is cooled to about 50% of its liquid temperature forming a special globular structure. The metal is then injected at low velocity into a metal die where it cools to a solid and then ejected. Squeeze casting uses molten metal injected into a metal die and held under high pressure while solidification is in process.
- Several aluminum alloys
- Near net shape, close tolerances
- Capable of zero porosity, very dense grain structure similar to wrought metals
- Smooth surface finish, typical 32-125 RMS
- Moderate draft requirements
- Ounces to 10 lbs.
- High tooling costs
- Moderate piece price
- Medium to high quantities
- Restrictions to design – undercuts and reverse angles must be machined
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