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Aluminium Die Casting
Die casting is injection moulding for metal: molten metal is forced at high pressure, about 10–175 MPa, into a steel die, held until it freezes, and pushed out by ejector pins. Aluminium needs a cold-chamber machine, where each shot is ladled in from a separate furnace, because molten aluminium would pick up iron from a submerged pump. The gate, runners and flash are broken off afterwards. Enclosures, housings and brackets come out with fine detail and little machining.
Advanced
Seconds per casting (industrial)
Instructions
1
1
Melt
Melt
Aluminium ingots are melted in a holding furnace beside the machine.
Materials for this step:
Aluminium Ingot50 kg2
2
Prepare the die
Prepare the die
The two die halves are sprayed with release lubricant and closed.
Tools needed:
Die Casting Machine
Die Casting Die3
3
Shot
Shot
A measured ladle of metal goes into the shot sleeve and a plunger drives it into the die at high pressure.
Tools needed:
Die Casting Machine4
4
Freeze and eject
Freeze and eject
Pressure is held while the metal freezes; the die opens and ejector pins push the casting out.
Tools needed:
Die Casting MachineDie Casting Die5
5
Trim and check
Trim and check
Gate, runners and flash are removed and the casting is checked against the drawing.
Tools needed:
Digital Caliper 6-InchMaterials
1- 50 kgPlaceholder
Tools Required
3- Placeholder
- Placeholder
- Placeholder
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