改善弹簧钢55SiCr小方坯中心碳偏析的试验研究  

Experimental study on improvement of center carbon segregation in 55SiCr spring steel billet

作　　者：孙光涛 黄永生 安航航[2] 王敏[2] 包燕平[2] 刘子艺 SUN Guang-tao;HUANG Yong-sheng;AN Hang-hang;WANG Min;BAO Yan-ping;LIU Zi-yi(Special steel branch company of Zenith Steel Group Company, Changzhou 213000, Jiangsu, China;State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing 100083, China)

机构地区：[1]中天钢铁集团有限公司特钢公司,江苏常州213000 [2]北京科技大学钢铁冶金新技术国家重实验室,北京100083

出　　处：《连铸》2018年第2期36-40,共5页Continuous Casting

摘　　要：针对160 mm×160 mm断面小方坯弹簧钢55SiCr铸坯中心偏析严重的问题,基于小方坯中心碳偏析形成的机理,考虑到连铸工艺参数对中心碳偏析的影响,进行工业优化试验。结合试验结果及凝固理论分析,确定了小方坯弹簧钢55SiCr的合理的连铸工艺参数,为改善小方坯弹簧钢55SiCr的凝固组织和铸坯中心碳偏析提供理论和实践依据。For serious center segregation of spring steel billet with section of 160 mm×160 mm,industrial trials were carried out in consideration of formation mechanism of center carbon segregation in billet and the effect of operating parameters in continuous casting on center carbon segregation. Combined with solidification principle and experimental result,reasonable operating parameters in continuous casting for 55 Si Cr spring steel billet were determined,which provided a theoretical and practical basis for improving macrostructure and center carbon segregation of 55 Si Cr spring steel billet.

关 键 词：弹簧钢55SiCr 凝固 中心碳偏析 铸坯质量 

分 类 号：TF777.3[冶金工程—钢铁冶金]