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클러치 디스크용 분말야금 스플라인 허브의 기계적성질에 관한 연구
최문일(M. I. Choi),장진호(J. H. Jang),강성수(S. S. Kang) 한국자동차공학회 1998 한국 자동차공학회논문집 Vol.6 No.5
In automotive industries, various processes for the cost reduction have been investigated lively. As one of them, powder metallurgy becomes influential. Compared to other methods used for the manufacture of steel components the Powder metallurgy process is competitive primarily due to the small number of production steps to reach the final geometry and therby also the energy-efficiency. In this paper, to alter present forging process into powder me-tallurgy process by which the automotive clutch disc spline hub is manufactured machining process, the mechanical properties of sintered materials is investigated by specimen test. Selecting the 3 kinds of materials-SMF 4040, SMF 9060 and DHP-1, their properties accor-ding to heat treatment such as carburizing-tempering and plasma-nitrodizing are compared. By result of specimen test - tensile test, compression ring test, Impacting test, measurment of hardness, and microstructure analysis - we concluded that SMF 9060 and carburizing-tempering heat treatment is an optimal material and heat treatment method for the spline hub. It will be able to reduce manufacturing cost and weight.<br/>