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通过模拟实验研究揭示超声波对液相中微颗粒凝聚过程作用机理,为超声波去除钢液中夹杂提供实验依据.在功率15～30W的范围内,超声波的声流作用很明显,可将液相中的微颗粒聚集于声压较小的区域.如果超声波功率在一定临界值(本研究为60W)以下,振动作用将超过空化分散作用,使颗粒凝聚成团,生成的空化气泡起到聚集已生成的颗粒团并使之长大的作用,得到颗粒团粒径和超声功率的关系式为:dcluster=0.539e0.523P(060W).
The mechanism of the effect of ultrasound on the aggregation process of micro-particles in the liquid phase was revealed through simulation experiments, which provided an experimental basis for ultrasonic inclusion removal in molten steel.In the range of power of 15 ~ 30W, the sound flow of ultrasonic wave was obvious, Of the microparticles accumulate in the area where the sound pressure is small.If the ultrasonic power is below a certain critical value (60W in this study), the vibrational effect will exceed the cavitation dispersion and cause the particles to agglomerate and the cavitation bubbles generated will gather Has generated the role of the particle group and make it grow, get the relationship between particle size and ultrasonic power of the particle size: dcluster = 0.539e0.523P (0
60W).