抄録
In the present study was investigated the manufacturing of vanadium-containing high-grade cast iron which used blast furnace pig iron, pig iron made from vanadium-containing iron sand, steel scrap, ferro-vanadium alloy and vanadium oxide containing slag as the raw materials.
The mechanical properties of this cast iron were made clear, compared with plain high-grade cast iron. Moreover, in the case of vanadium additions to cast iron, the addition of a ferro-vanadium alloy in the furnace resulted in a higher yield than that in the ladle, and by the refining of the vanadium oxide-containing slag and carbon, vanadium was almost completely alloyed,
The high carbon cast iron with about 3.4% carbon showed a tensile strength of about 35 kg/mm2, when 0.5∼0.7% vanadium was contained.
