| 摘要 |
<p>A core (18) having a number of slits (18A) is installed in a cavity (16) defined between a fixed die plate (12) and a movable die plate (14) in a die casting machine (10), and a gas-permeable metal mold (20) is disposed at a position where it touches the front ends of the slits (18A). And during the pouring of molten metal, a negative pressure is imposed on the gas-permeable metal mold (20) for degassing, whereby the molten metal can be poured as far as the front ends of the narrow slits (18A). The core (18A) may be replaced by a core (44) having holes for forming a plurality of pins, and the gas-permeable metal mold (20) may be placed at a position where it touches the front ends of the holes. Employing such arrangement makes it possible to die-cast thin plate portions or small-diameter pin portions that could not heretofore be produced by casting because of insufficient degassing.</p> |
