摘要
利用PMO-EMS方坯均质化组合调控技术,通过二冷水比水量、E-EMS、F-EMS以及PMO电磁参数优化,对比研究了提升连铸拉速,以期改善铸坯中心质量,实现提质增产。使用碳硫分析仪对铸坯横断面碳含量分布检测。结果表明,工艺参数优化后,铸坯中心偏析和中心偏析平均评级降低,同时低级别的占比比例提高(质量好),高级别的占比比例降低(质量差)。采用PMO-EMS组合调控均质化技术,在高拉速条件下仍可以使铸坯内弧到外弧的碳偏析指数控制在1±0.05内。
In order to improve the center quality of the billet and realize the quality and production increase, the improvement of continuous casting speed was comparatively studied by using the combined control technology of PMO-EMS homogenization, through the optimization of the specific water amount of secondary cold water, E-EMS,F-EMS and PMO electromagnetic parameters. Carbon and sulfur analyzer was used to detect the distribution of carbon content in cross section of billet. The results show that the average grade of center segregation and center segregation decrease after the optimization of process parameters, while the proportion of low grade is increased(good quality) and the proportion of high grade is decreased(bad quality). The carbon segregation index from inner arc to outer arc of billet can be controlled within 1 ±0.05 under the condition of high drawing speed by using PMO-EMS combined control homogenization technology.
作者
李辉成
刘海宁
谢有
豆乃远
LI Huicheng;LIU Haining;XIE You;DOU Naiyuan(Changzhou Zenith Iron and Steel Group Co.,Ltd.,Changzhou 213011,China;Center for Advanced Solidification Technology,Shanghai University,Shanghai 200072,China)
出处
《铸造技术》
CAS
2022年第4期303-306,共4页
Foundry Technology
基金
江苏省科技成果转化项目(高品质轴承钢、齿轮钢等特殊钢研发及产业化(BA2016087)
中央引导地方专项(20192ZDD01002)。
关键词
PMO-EMS组合调控
工艺优化
连铸
电磁冶金
PMO-EMS combined regulation technology
process optimization
continuous casting
electromagnetic metallurgy
