高温合金切削刀具的研究现状及进展

高温合金具有较高的强度、抗高温氧化性等性能，被广泛应用于各种领域中，其加工时切削温度高、加工硬化严重、刀具磨损严重，是最难加工的材料之一。本文综述了国内外高温合金切削刀具的研究现状。阐述了高温合金的切削特性，重点对高速钢、硬质合金、涂层硬质合金、陶瓷、PCVB这几类高温合金切削刀具材料的研究现状进行了分析；同时，也对国内外切削高温合金刀具的结构、切削加工工艺参数以及磨损机理的研究现状进行了概述。在此基础上，发现高温合金切削刀具虽然已经研发设计出了多种新刀具材料、新切削工艺参数，但仍然需要进一步了解影响刀具性能的因素及刀具磨损机理。因此，本文提出了建立评估刀具使用性能体系和研发高性能的刀具材料是高温合金切削刀具的主要研究方向。

Research Status and Progress of Cutting Tools on Superalloy

Since superalloy has the synthesized feature of performing better in strength, high temperature oxidation resistance and so on, it has been widely applied in various fields. Meanwhile, it is one of the most toughest materials to process in that it requires high temperature to cut, thus it leads to serious work hardening tendency and cutting tool wear. The research status of cutting tools on superalloy at home and abroad was summarized in this paper. The cutting property of superalloy was described, the material of cutting tools on superalloy was introduced focusing on the research status of high speed steel cutting tools, cemented carbide cutting tools, coated cemented carbide cutting tools, ceramic cutting tools, cubic boron nitride cutting tools. Meanwhile, the research status of tool structure, cutting process and wear mechanisms were also outlined. On this basis, it is found that some new tool material and cutting parameters are developed and designed, but the mechanism of tool wear and the influence on the cutting performance need further study. Therefore, it is pointed out that the direction of research on cutting tools should be establishing system of usability evaluation and developing high performance tools.