一、前言随着工业的发展,七十年代后期在钢铁工业中冶炼了一种新型铸铁——蠕虫状石墨铸铁。它比六十年代的稀土球铁,在材质上更加优良。其特点是流动性好,浇铸时便于充满型腔,致密性好,物理性能和加工性能好。高硅钛铁是熔炼蠕虫状石墨铸铁的中间合金。其中硅起孕育蠕虫作用,而钛和铝起 I. INTRODUCTION With the development of industry, a new type of cast iron, vermicular graphite cast iron, is smelted in the steel industry in the late seventies. It is more than the 1960s rare earth ductile iron, in the material more excellent. It is characterized by good fluidity, easy to fill the cavity when casting, compact, good physical and processing properties. High-silicon ilmenite is a master alloy for melting vermicular graphite cast iron. Silicon plays a role in breeding worms, while titanium and aluminum play