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人们所以对超声波场中淬火过程感到兴趣是因为超声振荡对淬火的重要阶段——冷却产生影响,而这个阶段对淬火工件的最终组织和性能起决定性作用。超声振荡可以在很宽的范围内调节冷却速度,因而可以控制加热金属在不同冷却阶段中的动力学特性。巴利姆、布拉特等研究了钢在超声波作用下液体中的淬火。认为用超声波刺激冷却介质可以提高淬火效果,并且能提高试件表面的和心部的硬度。在淬火液中,由于超声振荡
People are interested in the quenching process in the ultrasonic field because ultrasonic oscillations have an effect on cooling, an important phase of quenching, and this phase has a decisive effect on the final microstructure and properties of the quenched part. Ultrasonic oscillations allow the cooling rate to be adjusted over a wide range so that the kinetic properties of the heating metal in different cooling stages can be controlled. Barim, Blatter, et al. Studied the quenching of steels in liquid under ultrasonic action. It is considered that using ultrasonic to stimulate the cooling medium can enhance the quenching effect and improve the hardness of the surface and the core of the test piece. In quenching fluid, due to ultrasonic oscillation