Si-Ca or Si-Ca-Al ferro-alloy is substituted for alumium to be final deoxidant which helps to decrease the oxygen content in steel and to improve the casting and rolling properties.

• 硅钙或硅钙铝铁合金取代铝作为炼钢的终脱氧剂有助于降低钢中的总氧量，改善浇注和轧制性能。