结晶器内磁感应强度分布研究

Experiment Analysis on Distribution of Magnetic Flux Density of Mold

采用CST-11A型数字特斯拉计对圆坯连铸机结晶器内磁感应强度进行了研究,研究表明:结晶器的磁感应强度随电流的增加而增大,随频率的增大而降低;结晶器内磁感应强度轴向最大位置在距结晶器上口900mm位置,向两侧陡降;径向分布不均匀,由搅拌器内表面向中心逐渐减小;高频率经结晶器铜管后衰减更大。研究结果对合理制定及优化电磁搅拌工艺参数提供了理论依据。

The magnetic flux density of mold electromagnetic stirrer（ M- EMS） for round billet was researched by CST- 11 A Digital Tesla meter,The result showed that magnetic flux density increases as the current increases,and decreases as the frequency increases; maximum magnetic flux density along axis of mold appears at 900 mm away from the upper,and then fall dramatically in both sides,and distribution of magnetic flux density unevenly distributes along radius of mold,and gradually decreases from the inner surface to the center and high frequency passed through mold and attenuates greatly,which provided the theoretical basis for formulating and optimizing the reasonable technological parameters.