研究了超声波功率对加稀土高碳钢中夹杂物的作用.结果表明:超声处理可以明显弥散、细化和去除加稀土高碳钢中的夹杂物;随着超声波功率的增加,钢中总氧含量明显降低,夹杂物的平均直径明显减小,夹杂物得到一定程度的去除,但是夹杂物的当量个数明显增多.超声波功率100 W时,高碳钢中总氧的质量分数为59×10-6,钢中夹杂物的当量个数I为134 mm-2,平均直径d为2.91μm,小于2.31μm的夹杂物占夹杂物总量的43%以上. The effects of ultrasonic power on inclusions in rare earth-added high carbon steel were studied. The results show that ultrasonic treatment can obviously disperse, refine and remove the inclusions in rare earth high carbon steel. With the increase of ultrasonic power, The content of inclusions decreased obviously and the inclusions were reduced to a certain extent, but the number of inclusions increased obviously.When the ultrasonic power was 100 W, the mass fraction of total oxygen in high carbon steel was 59 × 10 -6, the number of inclusions in steel I is 134 mm-2, the average diameter d is 2.91 μm, inclusions less than 2.31 μm accounted for 43% of the total inclusions.