蠕墨铸铁兼有灰铸铁和球墨铸铁的性能,具有高的机械性能、较好的工艺性能和导热性能,是机械工程上的一种新型材料。自1979年7月以来,我厂已用稀土蠕墨铸铁代替了高强度合金铸铁、铁素体球铁及可锻铸铁,广泛地用于各种重要机件。我厂从1979年4月份开始研究,至7月份其熔炼工艺初步稳定。自7月份起连续熔炼了三十多炉次,批量从几百公斤到两吨多。生产的主要铸件为齿轮、连杆、离合器、轴承座、抛丸机叶片等高速或高负荷机床部件,件重1公斤到400公斤,铸件壁厚由6毫米到350毫米。成本比稀士镁球铁、可锻铸 Compacted graphite cast iron with gray cast iron and ductile iron performance, high mechanical properties, good process performance and thermal conductivity, mechanical engineering is a new type of material. Since July 1979, our factory has replaced the high-strength alloy cast iron, ferritic ductile iron and malleable cast iron with rare earth vermicular graphite cast iron and is widely used in all kinds of important parts. I plant from April 1979 began to study, to July the initial steady melting process. Since July more than thirty consecutive smelting furnace, batch from several hundred kilograms to more than two tons. Production of the main castings for gear, connecting rod, clutch, bearing, shot blasting machine blades and other high-speed or high-load machine tool parts, pieces of weight from 1 kg to 400 kg, casting wall thickness from 6 mm to 350 mm. The cost of magnesium than the iron ductile, malleable