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作 者:王韬[1] 陈伟庆[1] 王宏斌[2] 王建忠[2] 张志强[2]
机构地区:[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
出 处:《特殊钢》2013年第1期49-51,共3页Special Steel
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。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 mmx 150 mm billet of 82B steel (/% : O. 81C, 0. 76Mn, 0. 25Si, 0. 2Cr) with mold e- lectromagnetic stirring (M-EMS) 240 A/4 Hz has been tested and studied. Results show that in condition without using F- EMS, 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.
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