一般工厂每天熔化铁水时,由于铸件的厚薄及要求的性能不同,总有好几种铁号.在连续熔化中,每当二种炉料交界时,虽是分批加料,但熔化时不可能严格地按加料次序依次熔化,一定会互相冲混,很难知道出炉铁水的正确成分.在普通冲天炉内,交界前后三批铁水 There are several kinds of iron numbers in the general melting of molten iron every day because of the thickness of the casting and the required performance. In the continuous melting, whenever the two kinds of charge at the junction, although the batch feeding, but the melting can not be strict According to the order of the melting feed, will certainly mix with each other, it is difficult to know the correct composition of hot metal in the ordinary cupola, before and after the junction of three batches of hot metal