钙处理钢水能够在较低过热度下正常浇铸.为弄清楚钙处理影响钢水流动性的原因和确定最佳的钙含量范围,从钙含量和钢水中夹杂物固相率之间的关系方面研究了钙元素在钢水中的行为.分析不同钙含量的钙处理钢试样中的夹杂物成分并利用Al2O3-CaO-SiO2三元相图确定试样中钙铝和钙铝硅酸盐夹杂物在浇铸温度下的存在状态,由此得到钙含量和夹杂物固相率之间的关系.改善钢水流动性最佳的钙含量范围在(17～23)×10-6之间.
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