蠕虫状石墨铸铁是一种石墨形状介乎片状和球状之间的一种铸铁.它是六十年代中期才开始系统研究,七十年代初才投入生产的一种新材料,由于它兼有良好的机械性能和铸造工艺性能以及其它性能,故在国际上愈来愈受到重视。目前美、英、西德、民主德国、奥地利、罗马尼亚、捷克、法、日本、波兰和苏联都在进行试验和研究。1977年在意大利的弗罗仑斯 The worm-like graphite cast iron is a kind of cast iron with a graphite shape ranging from flake to sphere.It was a new material that started systematic research in the mid-1960s and was put into production in the early 1970s. Good mechanical properties and casting process performance and other properties, it is more and more attention in the world. Currently, the United States, Britain, West Germany, Germany, Germany, Austria, Romania, the Czech Republic, France, Japan, Poland and the Soviet Union are conducting experiments and research. Florence in Italy in 1977