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铈稀土合金经常被用作稀土金属添加剂而加到普通铸钢中.为了查明稀土金属在铸钢中的回收率及其对脱气和脱硫的效果,进行了在普通铸钢中添加0～0.3%稀土金属的各种试验. 试验取得了下列结论: 1.用铝进行预先脱氧对稀土金属回收率的影响尚未确定. 在钢水包中添加稀土金属比在出钢前添加具有更高的回收率. 2.稀土元素的含量愈多,气孔愈少;但是,试验发现,铝比稀土金属具有更好的脱气效果. 3.当钢屑含硫量为0.02%左右时,用稀土金属脱硫没有什么效果.
Cerium rare earth alloy is often used as a rare earth metal additive added to ordinary cast steel.In order to identify the recovery rate of rare earth metals in cast steel and its effects on degassing and desulfurization carried out in the ordinary cast steel add 0 ~ 0.3% rare earth metals The following conclusions have been made: 1. The effect of pre-deoxidation with aluminum on the recovery of rare earth metals has not yet been determined. The addition of rare earth metals in the ladle is more efficient than the addition of taurine Rate. 2. The more the content of rare earth elements, the fewer pores; However, the test found that aluminum has better degassing effect than rare earth metals. 3. When the sulfur content of about 0.02%, with rare earth desulfurization No effect.