UBUHANZI
UBWIZA N'UBUZIMA
UBUKORIKORI
UMUCO N'AMATEKA
IMYIDAGADURO
IBIDUKIKIJE
IBIRIBWA N'IBINYOBWA
UBWUBATSI BUSUBIRA INYUMA
UBUMENYI
SIPORO
IKORANABUHANGA
IBYAMBARWA
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.
Hejuru
Seconds per casting (industrial)
Amabwiriza
1
1
Melt
Melt
Aluminium ingots are melted in a holding furnace beside the machine.
Ibikoresho by'iyi ntambwe:
Igice cya aluminiyumu50 kg2
2
Prepare the die
Prepare the die
The two die halves are sprayed with release lubricant and closed.
Ibikoresho bikenewe:
Imashini isuka ku gitutu
Ikibumbiro cyo gusuka ku gitutu3
3
Shot
Shot
A measured ladle of metal goes into the shot sleeve and a plunger drives it into the die at high pressure.
Ibikoresho bikenewe:
Imashini isuka ku gitutu4
4
Freeze and eject
Freeze and eject
Pressure is held while the metal freezes; the die opens and ejector pins push the casting out.
Ibikoresho bikenewe:
Imashini isuka ku gitutuIkibumbiro cyo gusuka ku gitutu5
5
Trim and check
Trim and check
Gate, runners and flash are removed and the casting is checked against the drawing.
Ibikoresho bikenewe:
Ikigereranyo cya Digitale cy'Amasentimetero 6Ibikoresho
1- Umwanya
Ibikoresho bikenewe
3- Umwanya
Iki gishushanyo gikora
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CC0 Umurenge rusange
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