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350 mm×470 mm大方坯结晶器电磁搅拌参数优化

Special Steel(2012)

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Abstract
对350 mm×470 mm大方坯结晶器电磁搅拌的空载磁场进行了在线测量,获得了结晶器内磁感应强度分布规律。根据磁场测量结果计算了凝固前沿的电磁力及钢水流动速度,并分析了电磁搅拌参数对钢水流动速度的影响,确定了搅拌电流和频率的范围。由42CrMo钢现场实验的结果得出,当结晶器电磁搅拌电流为150 A,频率为2.5 Hz时,铸坯横断面的最大碳含量的偏差为±0.01%,带状偏析基本消除,铸坯内部质量明显改进。
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Electromagnetic Stirring,Mold,Band Segregation,Bloom
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