大方坯轴承钢中心偏析的成因及预防措施

来源期刊：钢铁2009年第8期

论文作者：何庆文 王宝 王福明 刘青

文章页码：39 - 41

关键词：轴承钢； 方坯； 中心偏析； 预防措施

Key words：bearing steel； bloom； central segregation； preventive measure

摘    要：对莱钢特钢厂连铸生产的大方坯轴承钢中心偏析的成因进行分析,研究了中间包钢水过热度等因素对中心偏析的影响,并对莱钢特钢厂的生产实践提出了预防措施。改善连铸轴承钢的中心偏析的方法和途径有:降低和稳定过热度,合理选择拉速、二冷强度和电磁搅拌参数等。

Abstract: The reasons of central segregation of 260 mm×300 mm bearing steel bloom have been analyzed,and the effects of superheat and other factors on central segregation have been investigated.Based on the analysis,some countermeasures to prevent central segregation have been implemented according to the practice in Special Steel Plant of Laiwu Iron and Steel Co.,Ltd.Technologies which is used to induce the center segregation contain lowering and stabilizing superheat,choosing reasonably casting speed,intensity of secondary cooling water and the parameters of electromagnetic stirring and so on.