触媒抛光法影响因素的仿真分析

Simulation Analysis Influential Factors of Catalysis Polishing

触媒抛光法以金刚石石墨化原理为基础,充分利用铁、镍等过渡金属对金刚石的触媒作用,通过降低金刚石石墨化所需要的活化能,形成易于研磨的石墨,从而提高材料去除效率。触媒作用与温度有密切关系,但是直接测量触媒作用产生的热量是非常困难的。文章通过对触媒抛光过程中不同条件产生的热量进行有限元仿真分析,探讨各因素对触媒抛光法的影响。研究表明使用过渡金属作为研磨盘材料有利于触媒作用的实现,铸铁HT200是最为合适的研磨盘材料,研究还表明切削速度的提高也有助于触媒作用的实现。

Catalysis polishing is based on the principle of diamond graphitization,which make full use of Fe,Ni and other transition metals as catalysts for diamond,and it can lower the activation energy of diamond graphitization,produce easy-to-ground graphite,so that to enhance the efficiency of material removal.Catalysis is closely related to temperature,but it is hard to measure the temperature of catalysis directly.The paper adopted the finite element simulation analysis to research the heat generated in different conditions during the catalysis polishing,and explored the effect of various factors on catalysis polishing.Studies show that the use of transition metals as grinding plate is beneficial to the catalysis,cast iron HT200 is the most suitable material of grinding plate,and it also shows that cutting speed increase will help to the catalysis.