用一种新型多功能电磁搅拌器对液态金属锡进行螺旋、直线和旋转磁场电磁搅拌凝固实验,研究了各种搅拌形式对冶金效果的影响。小方坯二冷区螺旋搅拌工业试验的结果表明:它可以减轻铸坯的白亮带,提高等轴晶率,减少中心缺陷,改善宏观偏析和夹杂物分布并有助于夹杂物的去除。 A new type of multi-functional electromagnetic stirrer was used to test the solidification of liquid metal tin by electromagnetic stirring of helical, linear and rotating magnetic fields. The effects of various stirring forms on the metallurgical effect were studied. The results of industrial trial of spiral mixing in the secondary billet show that it can reduce the white bright belt, increase the equiaxed grain rate, reduce the center defects, improve the macro-segregation and inclusions distribution and facilitate the removal of inclusions.