Formula of novel high-performance refractory-metal-containing cast iron and development of smelting technology

The invention relates to a formula of a novel high-performance refractory-metal-Ta-containing cast iron and a smelting technology of the novel high-performance refractory-metal-Ta-containing cast iron, and belongs to the fields of the formula of the novel high-performance cast iron and smelting processing of the novel high-performance cast iron. The research and development of the novel high-performance refractory-metal-Ta-containing cast iron have important significance for improving the use performance of the cast iron and improving the industrial production safety and the production efficiency. The formula is characterized in that Fe-C-Si-Ta series cast iron is adopted as the component of substrate of the high-performance cast iron, and the high-performance cast iron comprises 3.4-3.6 wt.% of C, 1.9-2.2 wt.% of Si, 0.3-0.5 wt.% of Ni, 0.15-0.5 wt.% of Cu, 0.6-0.9 wt.% of Mn, 0.07-0.1 wt.% of Sn, 0.1-0.3 wt.% of Cr, 0.02-0.06 wt.% of Ta, and the balance iron according to the formula.According to the high-pe