工业生产要求铸铁件材质进一步提高,例如,要求孕育铸铁高强度、同时具有高致密性;要求球墨铸铁在铸态具有良好综合机械性能并具有低温抗冲击韧性。 如何高效孕育处理以改善铸态组织,是提高铸铁材质的一个关键问题。作者采用氯化处理硅钙(硅钙破碎至一定粒度后经氯化物在适当温度下处理)作为孕育剂,取得了良好的效果。 Industrial production requirements to further improve the cast iron material, for example, required to nurture cast iron high strength, high density at the same time; require ductile iron castings have good overall mechanical properties and low temperature impact toughness. How to effectively deal with to improve the as-cast microstructure is to improve the quality of cast iron is a key issue. The authors used chlorination of calcium silicate (calcium and calcium broken down to a certain particle size after chloride treatment at the appropriate temperature) as inoculant, and achieved good results.