인코넬 718의 터닝가공에서 인서트 절입각이 경계마모 억제에 미치는 영향
Abstract
Inconel is a representative super-alloy with excellent heat resistance, abrasion resistance, and corrosion resistance, and used as a material for key aerospace components. It is a difficult-to-cut material with a very short tool life owing to its low thermal conductivity, excellent high temperature strength, and excellent work hardening ability. In this study, machining characteristics were identified based on the entering angle in the Inconel 718 turning process. A finite element simulation was performed to derive the effective entering angle range to suppress notch wear, which is the main cause of end-of-tool life. Additionally, cutting temperature, stress, and pressure distribution were analyzed. Through comprehensive analysis of finite element simulations and machining experiments, an effective entering angle range was derived to suppress notch wear in the turning process of Inconel 718.
Keywords:
Inconel, Turning process, Entering angle, Machining characteristics, Notch wear, Tool lifeAcknowledgments
이 연구는 산업통상자원부 산업기술혁신사업(과제번호 : 10067 065, 항공･에너지 플랜트 고경도 내열합금 가공용 코팅초경/cBN/ 세라믹스 공구개발)의 지원 하에 수행되었습니다.
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Senior researcher in Daegu Mechatronics and Material Institute.His research interest is Cutting tool and Machining process monitoring.
E-mail: jy.koo@dmi.re.kr
Senior researcher in Daegu Mechatronics and Material Institute.His research interest is Machine tools and Cutting tools.
E-mail: kdg0830@dmi.re.kr
Senior researcher in Daegu Mechatronics and Material Institute.His research interest is Cutting tools and Cutting process.
E-mail: iskang@dmi.re..kr
Principal researcher in Daegu Mechatronics and Material Institute.His research interest is Cutting tools and Materials.
E-mail: ycjung@dmi.re.kr
Research center manager in Korloy.His research interest is Cutting tools and Tool manufacturing.
E-mail: yhkim@korloy.com