| 摘要 |
A low pressure die casting machine for light alloys, of the type in which a charge of molten alloy is received in a charging chamber which is then closed and pressurized to drive the molten alloy into a die chamber formed by a plurality of separable die elements, in which the problems due to head metal and casting sprue in the casting passages and gates is minimized by forming these latter, as well as the charging chamber, as recesses in cooperating faces of two of the die elements, these recesses being so shaped that upon separation of the two die elements the casting sprue and head metal are exposed and can be ejected still attached to the casting without fouling any part of the die casting machine and without leaving any solidified head metal behind which might cause blockage problems unless it were maintained in a molten state.
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