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컴퓨터 시뮬레이션에 의한 구조용 합금강의 경화능특성 해석
김계수,홍준표 ( K . S . Kim,C . P . Hong ) 한국열처리공학회 1989 熱處理工學會誌 Vol.2 No.2
In this study, the specimens of SCM 22 H steel were quenched in oil and water baths at various agitation conditions in order to investigate the effects of quenchants and agitation conditions on the quench-hardening. A multi-channel temperature measurement apparatus was employed to obtain the cooling curves at several predetermined positions of specimens. Microstructural observation and hardness test were also carried out. Computer simulation of heat treating process was carried out using the modified finite difference method. Prediction of thermal history and hardness distribution by 2-dimensional computer analysis was in good agreement with the experimental results. It was found that the quantitative design of heat treating process can be made by the computer aided heat-treating analysis.
개량차분법에 의한 임의의 형상의 열처리제품의 급냉경화 해석
김계수,송영범,홍준표 ( K . S . Kim,Y . B . Song,C . P . Hong ) 한국열처리공학회 1989 熱處理工學會誌 Vol.2 No.2
Understanding and control of thermal history of heat-treated components are very important in heat treating process. A computer program was developed for prediction of thermal history in quenching process with various cooling media and agitation conditions. Computer simulation of heat flow in quenching treatment of spur gear of SCM 22 H was carried out by two and three dimensional finite difference method. Distributions of microstructure and hardness in heat-treated spur gear were predicted by computer simulation, and the results showed a good agreement with the experiments. It was concluded that the