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本世纪70年代以来,用离子注入方法改变金属材料表面特性取得了很大进展,经离子注入后某些金属材料表面的耐磨,耐腐蚀和抗氧化性能均有很大的提高。目前,这一高技术正在机械加工工业中得到广泛应用。所谓离子注入,就是将需要掺入的元素,先在加速器的源中离子化,再经电场加速到一定能量后直接注入到金属材料表面中。本实验是在我校自制的200KeV 离子注入机上来完成的。1.离子注入改善刀具耐磨性的研究当前,在金属切削加工中大量使用的是硬质合金和高速钢刀具,高速钢刀具约占刀具费用的60～65%,硬质合金约占30～35%,但硬质合金刀具切除切屑量约占总切屑量的65～70%,对硬质合金车刀进行离子注入改善其耐磨性能,提高使用寿命,将具有特别重要的意义。
Since the 1970s, great progress has been made in changing the surface properties of metal materials by ion implantation. The wear resistance, corrosion resistance and oxidation resistance of some metal materials after ion implantation have been greatly improved. At present, this high-tech is being widely used in the machining industry. The so-called ion implantation, is the need to incorporate elements, first in the accelerator ion source, and then accelerated by the electric field to a certain energy directly into the metal surface. This experiment is done in my home-made 200KeV ion implanter. 1. ion implantation to improve the wear resistance of the tool Currently, extensive use of metal cutting in the hard alloy and high-speed steel cutting tools, high-speed steel cutting tools account for about 60 to 65% of tool costs, carbide about 30 ~ 35%, but the amount of cutting carbide cutting tools accounted for about 65 ~ 70% of the total amount of chips, carbide inserts for ion implantation to improve its wear resistance, improve service life, will have special significance.