| 摘要 |
<p>A mold (30) and a method of casting a part wherein the casting surface (32) of the mold (30) including the nooks and crannies (33, 34, 35, 36) of the mold (30) are bounded by pitted mold surfaces(32) with the pitted mold surfaces (32) having surface voids (40) therein that are sufficiently small to prevent the molten metal to enter therein; however, when the molten metal is poured in the mold (30) having the pitted surfaces (32) the molten metal solidifies on top of the pitted surface (32) without entering into the pits (39) in the mold surface (32), yet at the same time the molten metal flows smoothly over all the mold surfaces (32) including the structural nooks and crannies (33, 34, 35, 36) of the mold (30) to form a cast product that is substantially free of voids and fissures (21).</p> |
