ISSN:1003-8620

CN:42-1243/TF

主管:中信泰富特钢集团股份有限公司

主办:大冶特殊钢有限公司

特殊钢 ›› 2013, Vol. 34 ›› Issue (1): 49-51.

• 工艺技术 • 上一篇    下一篇

连铸参数和末端电磁搅拌对82B钢小方坯中心碳偏析的影响

王韬1,陈伟庆1,王宏斌2, 王建忠2, 张志强2   

  1. 1北京科技大学冶金与生态工程学院,北京100083;
    2宣化钢铁公司技术中心,宣化075100
  • 收稿日期:2012-08-22 出版日期:2013-02-01 发布日期:2022-09-14
  • 作者简介:王 韬(1989-),男,硕士研究生,线材铸坯质量研究。

Effect of Concasting Parameter and F-EMS on Center Carbon Segregation of 82B Steel Billet

Wang Tao1, Chen Weiqing1 , Wang Hongbing2, Wang Jianzhong2,Zhang Zhiqiang2   

  1. 1 School of Metallurgical and Ecological Engineering, University of Science and Technology, Beijing 100083 ;
    2 Technical Center, Xuanhua Iron and Steel Co Ltd, Xuanhua 075100
  • Received:2012-08-22 Published:2013-02-01 Online:2022-09-14

摘要: 试验研究了结晶器电磁搅拌240 A/4 Hz时末端电磁搅拌(160 A/4 Hz~280 A/8 Hz),中间包钢水温度(1 500~1 542℃),拉速(1.7~1.9 m/min)和二冷区比水量(0.7~1.1 L/kg)对82B钢(/%:0.81C、0.76Mn、0.25Si、0.2Cr)150 mm×150 mm方坯中心碳偏析的影响。结果表明,在未采用末端电磁搅拌时,降低过热度和拉速、提高比水量有利于减少小方坯中心碳偏析。采用最佳的末端电磁搅拌参数160 A/6 Hz时,82B钢小方坯中心碳偏析指数最低,为1.02。

关键词: 82B钢, 小方坯, 末端电磁搅拌, 连铸工艺参数, 中心碳偏析

Abstract: The effect of final electromagnetic stirring (F-EMS) (160 A/4 Hz 〜280 A/8 Hz), temperature of liquid in tundish (1 500 〜1 542 ℃), casting speed (1.7 ~ 1. 9 m/min) and secondary cooling water ratio (0. 7 ~ 1. 1 L/kg) on center carbon segregation of 150 mm x 150 mm billet of 82B steel (/%: 0. 81C, 0. 76Mn, 0. 25Si, 0. 2Cr) with mold electromagnetic stirring (M-EMS) 240 A/4 Hz has been tested and studied. Results show that in condition without using FEMS, with decreasing overheat extent of liquid in tundish and casting speed, and increasing secondary cooling water ratio, the center carbon segregation index of billet decreases ; and in condition with using F-EMS with optimized parameter 160 A/ 6 Hz the carbon segregation of billet of 82B steel is minimum, that is 1. 02.