As a result, a mould with double stripper mechanism was needed, that is to say, there were levers and ejector pins on the stationary mouldhalf and ejector pipes on the moving mouldhalf.
About half of all aluminium castings are made using high-pressure die-casting (HPDC), in which a molten aluminium alloy is injected under pressure into a steel mould, or die.
大约有一半的铸铝工艺是高压模铸(HPDC)，在这种工艺中，通过压力将液态铝合金注入钢模，或模具。
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One half of the negative mould and the 'inside of the crankcase' mounted.