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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학위논문
- 저자정보
- 지도교수
- 강명창
- 발행연도
- 2017
- 저작권
- 부산대학교 논문은 저작권에 의해 보호받습니다.
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초록· 키워드
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Inconel 718, super heat-resistant alloy is superior due to outstanding toughness and the creep strength. It can especially endure high temperature and corrosion. It has been, therefore, broadly used in the various fields of aerospace, atomic industry, industrial mechanics and automobile. But such inherent properties as high temperature strength, an affinity with tool materials and low heat-conductivity of Inconel 718. Therefore, they cause many problems in the cutting process.
In this study, to improve cooling efficiency, indirect cooling tooling system was suggested and applied to machining process of Inconel 718. Tool wear such as flank wear, crater wear, machining temperature(thermocouple) as well as chip morphology and surface roughness of machined samples were presented with analysis of cutting force.
In case of dry machining, rapid flank wear was occurred between machining time 60 sec and 90 sec. Especially, the flank wear was measured at the maximum value at the cutting speed V=40 m/min, feed rate F= 0.3mm/rev. In the case of indirect cooling machining, no rapid flank wear was occurred compared to that of dry condition.
Through machinability evaluation of Inconel 718 workpiece, the maximum cooling efficiency is obtained at a cutting speed V=80 m/min, feed rate F=0.1 mm/rev in the indirect cooling process.
In this study, to improve cooling efficiency, indirect cooling tooling system was suggested and applied to machining process of Inconel 718. Tool wear such as flank wear, crater wear, machining temperature(thermocouple) as well as chip morphology and surface roughness of machined samples were presented with analysis of cutting force.
In case of dry machining, rapid flank wear was occurred between machining time 60 sec and 90 sec. Especially, the flank wear was measured at the maximum value at the cutting speed V=40 m/min, feed rate F= 0.3mm/rev. In the case of indirect cooling machining, no rapid flank wear was occurred compared to that of dry condition.
Through machinability evaluation of Inconel 718 workpiece, the maximum cooling efficiency is obtained at a cutting speed V=80 m/min, feed rate F=0.1 mm/rev in the indirect cooling process.
목차
1. 서론 11.1 연구배경 11.2 연구동향 21.3 연구목적 32. 이론적 배경 52.1 초내열 합금소재의 절삭가공 특성 52.2 초내열 합금소재가공의 냉각 특성 72.2.1 건식가공 및 습식가공 72.2.2 극미량 미스트가공 82.2.3 극저온 냉각가공 93. 실험장치 및 방법 103.1 실험장치 103.1.1 선삭 가공시스템 구성 103.1.2 간접냉각 툴링시스템 구성 113.1.3 데이터 측정 및 분석장치 153.2 인코넬 718 가공실험방법 214. 실험결과 및 고찰 244.1 공구마멸과 절삭력 특성 244.2 표면거칠기 특성 534.3 칩형상 및 온도특성 715. 결론 79참고문헌 81Abstract 89감사의 글 91
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