|제목(국문)||엔진배기밸브의 내열강 이종재 마찰용접의 최적화와 고온 크리프의 실시간 예측 및 AE에 의한 실시간 평가|
|제목(영문)||Dissimilar Friction Welding of Engine Exhaustive Valve and High Temperature Creep Prediction and Their Real-Time Evaluation by AE|
오정환 (J.H.Oh ,부경대학교 ) ▷공저자 네트워크 보기
오세규 (S.K.Oh ,부경대학교 공대 기계자동차공학부 ) ▷공저자네트워크등록하기
|초록||The engine exhaustive valve became essential as the important element. The dissimilar welding method of exhaustive valve head to stem was asked for manufacturing the engine exhaustive valve, for which the electric resistance are welding has been conventionally used, resulting in poor quality of the welded joint.
In this paper, not only the development of optimizing of friction welding with more
reliability and more applicability but also the development of in-process real-time weld
quality(such as strength and toughness) evaluation technique by acoustic emission for
friction welding of the engine exhaustive valve(SUH3-SUH35 dissimilar steels) were
performed. The high temperature(500, 550, 600°C) creep properties prediction of the
friction welded joint of SUH3-SUH35 was investigated relating to the initial strain
method(ISM) as a new approach, resulting in obtaining an experimental equation of
creep life prediction.
|keyword||Dissimilar Friction Welding(FRW, 이종재 마찰용접), Acoustic Emission(AE, 음향방출법), Tensile Strength(인장강도), Toughness(인성), Initial Strain Method(ISM, 초기연신률법), Prediction(예측)|