我厂与江苏工学院一起,三年来经60余炉次试验,目前已生产了蠕墨铸铁170F柴油机缸套2000余只。快速台架耐磨性能试验表明,这种缸套比球铁缸套的耐磨性提高2倍左右。而单位成本则降低15％左右。试验和生产所用熔化设备为2.5吨/时和3.5吨/时的热风“倒大双”冲天炉。采用稀土镁钙合金作蠕化剂,並在其中拌入占蠕化剂重量10％的粗食盐和硼铁(含硼25％) I plant with the Jiangsu Institute of Technology, three years after more than 60 furnace tests, has produced vermicular graphite cast iron 170F diesel cylinder more than 2,000. Fast bench abrasion resistance tests show that this cylinder liner than the ductile iron liner wear increased about 2 times. The unit cost is reduced by about 15%. Melting equipment used for testing and production is the “double-large” cupola at 2.5 t / h and 3.5 t / h. Rare earth Mg-Ca alloy used as a vermicularizing agent, and mixed with 10% by weight of the vermiculite crude salt and ferroboron (containing 25% boron)