稀土在球铁和蠕铁中的作用

• 作 者: 曾艺成 苏慕洵 郭戟荣 张和民 张忠仇
• 机 构: 郑州机械研究所,郑州机械研究所,郑州机械研究所,郑州机械研究所,郑州机械研究所
• 出 处: 中国稀土学报
• 发表日期: 1986年02期
• 关键词: 球铁件 蠕化剂 球化剂 石墨球 白口倾向 蠕虫状石墨 干扰元素 石墨形态 蠕墨铸铁 蠕化处理

通过对稀土在球铁和蠕铁中作用的研究得出稀土蠕化能力比镁强,蠕化剂应以稀土为主同时含少量镁,镁的球化能力比稀土强,球化剂应以镁为主同时含少量稀土的结论。“球铁中含适量稀土可降低球化所需的残余镁量,使石墨球数增加,白口倾向和壁厚敏感性减小,同时能减少氧化夹渣和消除干扰元素的影响。

Through the study of the effect of rare earth in ductile iron and vermicular iron, it is concluded that the rare earth creep ability is stronger than that of magnesium, and the vermiculite should mainly contain rare magnesium and magnesium. The nodularity of rare earth is stronger than that of rare earth. Magnesium-based conclusion with a small amount of rare earth. "The proper amount of rare earth in the ductile iron can reduce the amount of residual magnesium required for spheroidization, increase the number of graphite balls, decrease the whiteness tendency and the wall thickness sensitivity, and at the same time reduce the influence of the oxide inclusions and interference elements.