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为更好地确定用钙合金处理钢时的操作条件,我们进行了直接测定钙化物在钢水中的溶解度的研究并并且拟定了一种预先计算夹杂物成分的方法。发现CaO及CaS在铁水或低合金钢中溶度积的试验值(K_(CaO)=9×10~(-7),K_(CaS)=10~(-5),1600℃)远高于用现有的热力学数据进行预测的值。1600℃时,磷化钙及氮化钙具有与硫化钙相近的稳定性。对含钙夹杂物成分的理论计算与用钢本体电解法萃取的杂杂物的化学分析结果非常一致。
To better determine the operating conditions for the treatment of steels with calcium alloys, we conducted a direct study of the solubility of calci- um in molten steel and developed a method for pre-computing inclusions. The results show that the solubility product of CaO and CaS in hot metal or low alloy steel is higher than that of CaO = 9 × 10 -7, K_ (CaS) = 10 -5, 1600 ℃ Predict values from available thermodynamic data. 1600 ℃, calcium phosphide and calcium nitride have similar stability with calcium sulfide. The theoretical calculation of the composition of calcium inclusions is in good agreement with the chemical analysis of the impurities extracted by the steel bulk electrolysis.