连铸工艺参数对SWRH82B钢160 mm x 160 mm坯中心碳偏析的影响

特殊钢 ›› 2018, Vol. 39 ›› Issue (4): 38-42.

连铸工艺参数对SWRH82B钢160 mm x 160 mm坯中心碳偏析的影响

童为硕, 李晶, 闫威

北京科技大学钢铁冶金新技术国家重点实验室，北京100083

收稿日期:2018-02-28 出版日期:2018-08-01 发布日期:2022-06-01
作者简介:童为硕(1994-),男，硕士生(北京科技大学),2016年辽宁科技大学(本科)毕业,高碳钢连铸凝固质量研究。

Effect of Continuous Casting Parameters on Center Carbon Segregation of SWRH82B Steel 160mm x 160mm Billet

Tong Weishuo, Li Jing , Yan Wei

State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing 100083

Received:2018-02-28 Published:2018-08-01 Online:2022-06-01

摘要/Abstract

摘要： 试验研究了结晶器电磁搅拌频率、拉速、过热度及二冷强度对SWRH82B连铸小方坯中心碳偏析的影响。研究结果表明,结晶器搅拌电流为300 A时,低电磁搅拌频率下铸坯中心碳偏析情况较好;拉速为1.8 m/min时,提高二冷比水量有利于改善中心碳偏析,但二冷比水量过高会加剧偏析;拉速为1.8 m/min时,二冷比水量为0.75 L/kg较为合适,拉速为1.9 m/min时,二冷比水量为0.8 L/kg是比较合适的;当过热度在20～30℃时,过热度对铸坯中心碳偏析的影响不大。

关键词: SWRH82B钢,160 mm X160 mm连铸坯, 中心碳偏析, 拉速, 二冷比水量, 过热度

Abstract: The effect of continuous casting process parameters including M-EMS stirring frequency, casting speed, superheat and secondary cooling water ratio on the center carbon segregation of SWRH82B billet were investigated. The results indicated that low center carbon segregation index could be obtained in lower M-EMS stirring frequency with constant stirring current 300 A, center carbon segregation could be improved by increasing secondary cooling water ratio, but it would get worse with the further increase of secondary cooling water ratio; secondary cooling water ratio of 0. 75 L/kg was suitable for casting speed of 1.8m/min while 0. 80 L/kg was proper for 1. 9 m/min. In addition, superheat between 20 ~ 30 °C had negligible effect on the carbon center segregation.

童为硕, 李晶, 闫威. 连铸工艺参数对SWRH82B钢160 mm x 160 mm坯中心碳偏析的影响[J]. 特殊钢, 2018, 39(4): 38-42.

Tong Weishuo, Li Jing , Yan Wei. Effect of Continuous Casting Parameters on Center Carbon Segregation of SWRH82B Steel 160mm x 160mm Billet[J]. Special Steel, 2018, 39(4): 38-42.