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一、绪言由于稀土元素与氧、氢、氮等气体以及硫和碳的反应很强烈,因而加入到钢中有脱氧、脱氮和脱硫等效果,所以对稀土的这一用法正在进行种种研究.但是,由于稀土元素的化学反应性很强,目前分成单个元素还很困难,因而不能以单个元素来添加.本试验是研究在铸钢中添加高镧稀土金属和高铈稀土金属对铸钢脱硫、脱气、非金属夹杂、奥氏体晶粒度及机械性能的影响.
I. INTRODUCTION Since rare earth elements react strongly with gases such as oxygen, hydrogen and nitrogen as well as sulfur and carbon, their effects on deoxidation, denitrification and desulphurization are added to the steel. Various studies are under way on this usage of rare earths. However, due to the strong chemical reactivity of rare earth elements, it is still difficult to divide into single elements and therefore can not be added as a single element.This study is to study the effects of adding lanthanum rare earth metals and cerium rare earth metals on the cast steel desulfurization , Degassing, non-metallic inclusions, austenite grain size and mechanical properties.