熔炼铸铁时,为取代稀缺的炉料,曾进行了用炼钢生铁代替铸造生铁的研究工作.试验结果发现一些问题,例如,用炼钢生铁代替铸造生铁,提高了铸铁的白口倾向;硅含量的波动增大,致使铸件的机械性能和硬度的波动范围增大;冲天炉熔炼时采用φC75硅铁孕育处理的吸收率低,而且发现孕育有效时间较短. In the smelting of cast iron, research was carried out to replace cast iron with steelmaking pig iron instead of scarce charging material, and the test results revealed some problems such as the use of steelmaking pig iron instead of foundry pig iron to increase the whiteness tendency of cast iron; the silicon content Of the fluctuation increases, resulting in casting mechanical properties and hardness of the fluctuation range increases; cupola melting φC75 ferrosilicon used in the treatment of low absorption rate, and found that the incubation time is shorter.