The relationships of cleanness, undercooling and grain size of low carbon steel have been investigated by using of vacuum glass encasement levitation melting.

• 利用玻璃包熔真空悬浮熔炼等手段研究低碳钢的纯净度、过冷度与晶粒度之间的关系研究表明:随着包熔次数增加,钢中夹杂物含量减少,纯净度提高。