1·The result shows that there are no casting defects, such as shrinkages, blowholes, and slag inclusions and the quality of casting is steady.
生产结果表明，铸件没有气孔、夹砂、夹渣、收缩等铸造缺陷，铸件品质稳定。
2·Inclusions in the gray strip defects consist of MgO and trace melilite, which result from MgO-C refractory in slag line.
灰色条带状缺陷中外来物主要为氧化镁，并含少量黄长石，来源于渣线镁碳砖耐火材料；
3·Absorption of inclusions to slag, steel reoxidation by slag, and protective effect of the slag at ladle, continuous tundish and nold are discussed.
讨论了钢包、中间包及连铸结晶器所用渣相对夹杂物的吸附，对钢水的氧化，以及保护浇注的效果。
4·Results show that the micro-inclusions 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；中间包钢样中的显微夹杂物同时含有镧和中间包示踪元素铈；