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REVERSE ENGINEERING
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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.
Osezingeni eliphezulu
Seconds per casting (industrial)
Imiyalelo
1
1
Melt
Melt
Aluminium ingots are melted in a holding furnace beside the machine.
Izinto zokwakha zalesi sinyathelo:
Isigaxa se-aluminium50 kg2
2
Prepare the die
Prepare the die
The two die halves are sprayed with release lubricant and closed.
Amathuluzi adingekayo:
Umshini wokuthela ngengcindezi
Isikhunta sokuthela ngengcindezi3
3
Shot
Shot
A measured ladle of metal goes into the shot sleeve and a plunger drives it into the die at high pressure.
Amathuluzi adingekayo:
Umshini wokuthela ngengcindezi4
4
Freeze and eject
Freeze and eject
Pressure is held while the metal freezes; the die opens and ejector pins push the casting out.
Amathuluzi adingekayo:
Umshini wokuthela ngengcindeziIsikhunta sokuthela ngengcindezi5
5
Trim and check
Trim and check
Gate, runners and flash are removed and the casting is checked against the drawing.
Amathuluzi adingekayo:
I-Caliper Yedijithali Yamayintshi Ayi-6Izinto
1- 50 kgIsibambeli
Amathuluzi Adingekayo
3- Isibambeli
- Isibambeli
- Isibambeli
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