CAJ | 학술논문

研究了不同切削参数对TiN+Al2O3涂层氮化硅陶瓷刀具切削灰铸铁的切削性能的影响，使用工具显微镜、SEM/EDS手段分析了涂层氮化硅刀具的磨损机理，实验还采用相同基体氮化硅陶瓷刀具做了对比分析。研究结果显示TiN+Al2O3涂层氮化硅刀具可以承受比较大的切削用量，对提高加工效率有重大意义；还发现涂层氮化硅陶瓷刀具主要失效形式为磨粒磨损，粘结磨损，在较高切削速度条件下前刀面还会出现因化学磨损形成的月牙洼。
연구료불동절삭삼수대TiN+Al2O3도층담화규도자도구절삭회주철적절삭성능적영향，사용공구현미경、SEM/EDS수단분석료도층담화규도구적마손궤리，실험환채용상동기체담화규도자도구주료대비분석。연구결과현시TiN+Al2O3도층담화규도구가이승수비교대적절삭용량，대제고가공효솔유중대의의；환발현도층담화규도자도구주요실효형식위마립마손，점결마손，재교고절삭속도조건하전도면환회출현인화학마손형성적월아와。
This paper studied the cutting performance of TiN+Al2O3 coated silicon nitride tool when machining gray cast iron(HT250) on different cutting parameters, using tool microscope, SEM/EDS technology to analysis the wear mechanisms of the worn tool after test, the work also adopt the same substrate nitride tool as a comparative analysis. The results showed that the TiN+Al2O3 coated nitride tool can bear larger cutting parameter than the uncoated one, it has a significant meaning to improve the machining efficiency. The main failure form of coated silicon nitride cutting tools were abrasive wear and adhesion wear,rake face also can appear crater by the chemical wear when under the condition of high cutting speed.