所有的浇铸系统,在浇铸时的最初几秒钟内,当还没有被铁水灌满时,很容易让一部分氧化的铁水表皮及熔渣通过敞开着的(没有被铁水封闭住的)内浇口而流入铸型。为了更精确地分离并挡住铁水中的熔渣及其他非金属的夹杂物,所以在浇铸时的最初几秒钟内应该浇得很快(在1－2秒钟内),使铁水将浇铸系统对闭起来。为了达 All casting systems, when not already filled with molten iron during the first few seconds of casting, readily allow a portion of the oxidized molten iron skin and slag to pass through an open (not closed by hot metal) gate While flowing into the mold. In order to separate and block the slag and other non-metallic inclusions in the hot metal more accurately, it should be poured very quickly (within 1-2 seconds) during the first few seconds of casting so that the hot metal will cast the system To close up. In order to reach