可锻铸铁生产有悠久的历史,国内采用冲天炉及冲天炉电弧炉双联法熔炼可锻铸铁已经积累了丰富的经验。我厂采用十吨工频炉熔炼铁素体可锻铸铁,自1975年投产以来,虽经几次调整熔炼工艺,但机械性能仍然偏低,有30～40%的炉次低于KT35—10的水平,在一定程度上影响汽车质量。为了提高可锻铸铁机械性能,我们做了一些工作,在生产上取得了一定的成效,现总结如下: Malleable cast iron production has a long history, the domestic use of cupola and cupola arc furnace dual method of malleable cast iron has accumulated rich experience. I plant using ten-watt frequency furnace smelting ferrite malleable iron, put into operation since 1975, despite several adjustments to the melting process, but the mechanical properties are still low, 30 to 40% of the furnace below KT35-10 level , To a certain extent, affect the quality of the car. In order to improve the mechanical properties of malleable iron, we have done some work in the production has achieved some results, are summarized as follows: