Study on Metallurgical Effects of M- EMS during Bloom Continuous Casting
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摘要: 通过统计不同时间段结晶器电磁搅拌磁场强度及连铸坯质量,将不同磁场强度所对应的连铸坯内部质量进行对比,分析了不同磁场强度对连铸坯质量的影响。同时,浇注过程中改变电搅线圈的电流强度,在同一流次得到不同的磁场强度,取对应的连铸坯样进行检验,对比分析了同一流次不同磁场强度对连铸坯质量的影响。分析认为:电磁搅拌磁场强度衰减至300×10-4T以下时,不宜再上线使用。进而对攀钢大方坯结晶器电磁搅拌的冶金效果进行了评价,规范了电磁搅拌器的使用。Abstract: In this paper,M-EMS magnetic field intensity and bloom quality at different periods is counted,and on this basis,the effect of magnetic field intensity of M-EMS on casting bloom quality is analyzed.Different magnetic field intensity in a single strand can be obtained by changing the current intensity of M-EMS.Then,the corresponding bloom under different magnetic field intensity are sampled for testing.Thus,the effect of magnetic field intensity on bloom quality is studied in a single strand.Analysis suggests that M-EMS should not be used when its magnetic field intensity is less than 300×10-4 T.Furthermore,the metallurgical effects of bloom M-EMS in Pangang are evaluated and the applicable standard for M-EMS is established.
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Key words:
- continuous casting /
- mold /
- electromagnetic stirring /
- bloom quality
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