一、绪言稀土在钢中应用的成效与冶炼工艺有很大关系。其中稀土的加入方法对钢中稀土的存在状态、残留的数量和分布传况有直接的影响,并对有关的一些问题,如水口结瘤和低倍夹杂等带来重要影响,因此,研究改善稀土的加入方法一直受到国内外有关人员的重视。 First, the introduction of rare earths in the steel application of the effectiveness and smelting process has a lot to do with. The addition of rare earth has a direct impact on the existence of rare earths, the quantity and distribution of rare earths in steel, and has an important impact on some related issues, such as nodules and low magnification inclusions. Therefore, Rare earth to join the method has been the attention of relevant personnel at home and abroad.