钴结壳水射流切削系统参数设计

Parameters design of cobalt crusts water jet cutting system

为了避免刀具切削钴结壳时产生冲击载荷,提出了深海钴结壳水射流切削方法。采用仿真计算和实验测试研究了水射流系统参数与其切削性能的作用规律。仿真结果表明:水射流系统的工作压力、喷距和喷射角度是决定水射流切削能力的主要参数;其重要程度依次为工作压力、喷距和喷射角度;提高水射流系统工作压力是提高射流切削能力最有效的方法;在射流工作压力一定的情况下,为了提高射流的切削能力,射流的喷距宜小于4 mm(4倍喷嘴直径)内,射流的喷射角度约为13°。实验结果表明:提高射流的工作压力可以显著提高射流的切削能力,减小射流的喷距有助于提高射流的切削能力,射流的最优喷射角度约为13°。

Deep sea cobalt crusts water jet cutting method is proposed to avoid the impact load, which is generated during cutter cutting cobalt crusts. With simulation calculations and experimental tests, water jet system parameters and its cutting ability were stud- ied. Simulation results show that working pressure, injection range and injection angle of water jet system are main parameters to its cutting ability. Its important degree is in turn the working pressure, injection range and injection angle. To increase water jet system working pressure is the most effective way to improve its cutting a-bility. When working pressure is constant, in order to improve wa- ter jet cutting ability, the injection range should be less than 4 mm （four times of nozzle diameter） and injection angle should be about 13°. Experimental results show that increasing water jet working pressure can dramatically improve its cutting ability, decreasing in-jection range can improve water jet cutting ability. The optimal in-jection angle is about 13°.