美国蒂姆肯公司最近通过对36批连铸钢坯进行超声波测试来研究电磁搅拌对夹杂物宏观分布的影响。 电磁搅拌主要是使钢坯凝固时组织均匀化。正如大多数文献介绍,电磁搅拌通常所获益处是:1)增加等轴晶数量,改善铸造组织;2)减少宏观偏析程度,特别是中心部位的偏析;3)改善钢坯表面质量;4)减少收缩疏松。在当前的研究中,这些好处都或多或少被证实。虽然文献中常提到电磁搅拌对夹杂物分布的影响和去除夹杂物的功能,但很少被证实。另外,以前这方面的研究工作通常是采用传统 Timken Company recently conducted an ultrasonic test on 36 batches of continuous cast billet to study the effect of electromagnetic stirring on the macroscopic distribution of inclusions. Electromagnetic stirring is mainly to homogenize the billet solidification. As most of the literature describes, the usual benefits of electromagnetic stirring are: 1) increasing equiaxed grain numbers to improve casting structure; 2) reducing macro segregation, especially segregation at the center; 3) improving billet surface quality; and 4) Contraction loose. In the current study, these benefits are more or less confirmed. Although the literature often mentions the influence of electromagnetic stirring on the distribution of inclusions and the function of removing inclusions, it is seldom confirmed. In addition, the previous research work in this area is usually traditional