| 摘要 |
High casting rates and consistently precise dimensions of lead and lead alloy projectiles are obtained with an ingot mold comprising two like ingot mold halves having abutting sides and upper and lower sides extending outwardly therefrom, the abutting mold half sides defining like cavity halves open towards the upper sides of the mold halves and forming a mold cavity for casting the projectile. Each mold half consists essentially of a first part of a metal having a high wettability for the lead or lead alloy being cast, the first metal parts of the mold halves defining the mold cavity, and a second part of a metal having a higher thermal conductivity than the first metal part, the second metal part being in heat conducting contact with the first part.
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