| 摘要 |
PROBLEM TO BE SOLVED: To firstly prevent the remaining of releasing agent and the development of casting flash in a gap between a die and a sliding member in a die casting apparatus, in which the sliding member penetrating the die is provided and also, the pressure reduction in the die cavity is executed. SOLUTION: A fixed die 2 and a movable die 3 forming the die cavity 1, ejecting pins 13, 14 and chambers 17, 18 penetrated with the ejecting pins 13, 14 and air supplying means 19, 20 are provided, and the air is press-supplied into the chambers 17, 18 and spouted from the gap between the die and the ejector pins 13, 14 to prevent the invasion of the releasing agent into this gap. Further, the inner pressure in the chambers 17, 18 is held higher than the reduced pressure in the die cavity 1 to prevent the invasion of molten metal 6 into the gap with this pressure difference.
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