自激振荡磨料射流的基本理论与初步试验

自激振荡磨料射流是在自激振荡脉冲射流和前混合磨料射流基础上，提出的新型射流。为此，重点讨论了自激振荡磨料射流喷嘴的结构和工作原理，分析了脉冲频率和幅值等参数对磨粒加速效果的影响。根据初步研究表明，磨粒速度受脉冲频率和幅度影响很大，磨粒速度可超过前混合磨料射流中磨粒的速度，最大钻孔速度比前混合磨料射流提高４１％ 。这一成果有望用于坚硬物料的切割和特种加工、石油钻井、大洋采矿、难采矿体的开采、坚硬岩石巷道（遂道）掘进、表面清洗等领域。

Primary Theory and Experiment of a Self-Oscillating Abrasive Water Jet

On the basis of self oscillating pulse water jet and pre mixed abrasive water jet, a new type abrasive jet, self oscillating abrasive water jet (SOAWJ), is put forward. The configuration and operating principle of the SOAWJ nozzle are discussed. Primary theoretical and experiment results indicate that the effects of the pulse frequency and amplitude on the abrasive particle speed in the SOAWJ nozzle are notable. The particle speed in SOAWJ may be faster than that of the pre mixed abrasive water jet, and the maximum penetration speed of SOAWJ could increase 41%.