Study on Dissimilar Friction Welding Optimization of Heat Resisting Steels for Turbine and Real-Time Quality Evaluation by Ascoustic Emission(I) - FRW Optimization

J. Ocean Eng. Technol. 1999;13(3):83-91.

Park, Hyung-Dong;Oh , Sae Kyoo;Kwon, Sang-Woo;

터빈용 내열강의 이종재 마찰용접 최적화와 AE에 의한 품질 실시간 평가에 관한 연구(I) - 마찰용접 최적화

박형동;오세규;권상우;

부산기능대학 대학원 기계공학과;부경대학교 공과대학 기계 ${cdot}$ 자동차공학부;부산기능대학 대학원 기계공학과;

Keywords: Friction Welding, Optimization, Acoustic Emission, Optimum Welding Condition, Weld Strength, Weld Toughness, Weld Quality

핵심용어: FRW, 마찰용접, 최적화, AE, 음향방출, 최적용접조건, 용접강도

Abstract

Taking a view of joining by welding the IN713C to SCM440 and SCM415 steel in production of turbochargers, the frictin welding process may be utilized as a new approach for joining them of other conventional welding processes. It is because the friction welding has more technical and technical and economic advantages than the other welding processes. As this welding process has the characteristics such as curtaliment of production time and materials and cost reduction, etc.. So, this paper deals with determining the preper friction welding condition and analyzing various mechanical properties of friction welded joints of the super heat resisting steel to alloy stee(IN713C to SCM440 and SCM415). And the in-process real-time weld quality evaluation technique by acoustic emission during friction welding of IN713C to SCM440 and SCM415 steels with higher confidence and relibility has been much required even though it might be the first trial approach for developing it. Then, this first study aimed to develop the optimization of dissimilar friction welding of heat resisting steels (INC713 to SCM440, SCM415) for turbine, considering on strength and toughness.