【摘要】 介绍了供感应电炉熔炼低硫铁液生产蠕墨铸铁用的三种REMgTiSiFe合金蠕化剂的化学成分,并用其中的#1、#2和#3号蠕化剂进行了蠕墨铸铁的生产性试验。分析了铁液的蠕化衰退问题和铸造性能问题。指出:这种类型蠕化剂的蠕化效果随时间的衰退不明显;用该合金蠕化剂生产蠕墨铸铁,其铁液的铸造性能和线收缩率与HT200的线收缩基本相同,而体收缩率比HT200的要大一些。更多还原

【Abstract】 An introduction was given to three different chemical compositions of REMgTiSiFE alloys used for production of vermicular iron with induction furnace-melted low sulphur iron melt.The experiments to produce vermicular iron were carried out by using #1,#2 and #3 alloys of them.The problems with the vermicularizing effect fading and cast-ability were analyzed.It was pointed out that the vermicularizing effect fading tendency with holding time of the vermiculasr iron treated with this type of vermiculizing alloys was not obvious.The cast-ability and linear contraction rate of the vermicular iron produced with this type of alloys were similar to that of the HT200 grade gray iron,however its volumetric contraction rate was some higher than that of HT200 gray iron.更多还原