摘要
通过检测分析GCr15炉外精炼过程钢中钙化处理前后夹杂物及铸坯夹杂物的形貌和成分的变化,可知钙化处理后钢中夹杂物和铸坯中夹杂物存在大量的CaS夹杂,CaS夹杂熔点较高,不利于夹杂物的去除。通过优化工艺后,取消钙处理后,铸坯中的夹杂物主要为低熔点钙镁铝酸盐或钙铝酸盐。
Through analysis of morphology and composition changes of inclusions before and after calcium treatment and those in casting slabs during GCr15 refining process, we found a large number of Ca S inclusions. And Ca S inclusions have high melting point and is not conducive to the removal of inclusions. After optimizing the process and removing calcium treatment, the inclusions in the slab are mainly calcium magnesium aluminate or calcium aluminate with low melting points.
作者
安强
徐吉尤
曾凡政
罗荣华
AN Qiang XU Jiyou ZENG Fanzheng LUO Ronghua(Xiangtan Iron and Steel Co., Ltd. of Hunan Valin, Xiangtan 411101, China)
出处
《金属材料与冶金工程》
CAS
2017年第3期19-22,43,共5页
Metal Materials and Metallurgy Engineering
基金
湖南省战略性新兴产业科技攻关类项目(2016GK4036)资助
关键词
钙处理
夹杂物
低熔点
演变
calcium treatment, inclusions, low melting point, evolution
