著者

髙橋 芳朗 清水 一道 足立 真彦 大城 桂作 片岸 庄史

出版者

Japan Foundry Engineering Society

雑誌

鋳造工学 (ISSN:13420429)

巻号頁・発行日

vol.75, no.3, pp.196-201, 2003-03-25 (Released:2011-02-01)

参考文献数

21

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Solidification structures and frictional wear characteristics of high P cast iron containing 3.3 mass%C, 1.7 mass%Si, 1.4 mass%Mn, 0.3-3.0 mass%P, 0.37 mass%Cr, 0.20 mass%V were examined with an image analyzer and original braking test machine. High P cast iron consists of steadite, eutectic cementite and flaky graphite distributed in pearlitic matrix. The addition of higher levels of P increases the steadite, which raises frictional wear resistance against the wheel steel.The wear resistance effectively improved with the addition of about 0.6 mass%P. The braking ability also improved with the addition of more than 1 mass%P at the initial braking speed of above 15 m/s. The contact surface was heated above 990 K at the initial braking speed of 25 m/s and the steadite partially melted or softened, which enhanced the braking ability of cast iron.