Results show that the microinclusions in steel both in the refining process and after calcium treatment include La which is the tracer in ladle slag.
结果表明,精炼过程和钙处理后的钢中显微夹杂物均含有钢包渣示踪元素镧;
3
Some process measure were improved to increase carbon content of finished product, and ladletreatment was enhanced, it obviously improved steel's intension.