轴承钢GCr15连铸坯中心碳偏析控制  

CONTROL OF CENTRAL CARBON SEGREGATION OF BEARING STEEL GCr15 CONTINUOUS CASTING BILLET

作　　者：王劲松 张群 李生栋 王继伟 Wang Jinsong;Zhang Qun;Li Shengdong;Wang Jiwei(Manufacturing department of BenXi Iron&Steel Co.,Ltd.;Product Research Institute,Bengang Steel Plates Co.,Ltd.;Special steel plant of Benxi steel plate Co.,Ltd.,Benxi 117000,China)

机构地区：[1]本钢板材股份有限公司制造部 [2]本钢板材股份有限公司研发院 [3]本钢板材股份有限公司特殊钢厂,辽宁本溪117000

出　　处：《冶金信息导刊》2021年第5期9-11,共3页Metallurgical Information Review

摘　　要：根据高碳轴承钢在凝固末端固液两相区碳含量选分结晶特点,在理论计算和射钉试验的基础上,将末端电磁搅拌线圈准确定位。结合连铸机弧半径较大、拉速较低的工艺特点,通过对比不同搅拌方式试验,对轴承钢中心碳偏析进行分析,最终确定合理的搅拌参数,将中心碳偏析控制在0.95~1.05。On the basis of theoretical calculation and nail-shooting test,the electromagnetic stirring coil at the end of high carbon bearing steel was positioned accurately according to the characteristics of the carbon content in the solid-liquid two-phase zone at the solidification end.Combined with the technological characteristics of large ARC radius and low casting speed of continuous casting machine.The carbon segregation in the center of bearing steel is analyzed by comparing different stirring methods,and reasonable stirring parameters are determined.The carbon segregation in the center is controlled at 0.95-1.05.

关 键 词：轴承钢Gr15 末端电磁搅拌 中心碳偏析 

分 类 号：TG1[金属学及工艺—金属学]