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RESEARCH PAPERS

Experimental and Numerical Analyses of Effect of Thermal Stability of Lubricants on Heatstreaks in Cold Rolling of Stainless Steel

[+] Author and Article Information
H. Yamamoto, T. Shiraishi, M. Ataka

Central R&D Bureau, Nippon Steel Corporation, Chiba 299-11, Japan

Y. Iwasaki

Nara Plant & Laboratory, Daido Chemical Industry Co., Ltd., Nara 639-11, Japan

J. Tribol 115(3), 532-537 (Jul 01, 1993) (6 pages) doi:10.1115/1.2921670 History: Received January 29, 1992; Revised June 01, 1992; Online June 05, 2008

Abstract

The numerical analysis model of temperature in a roll and a rolled material was first derived by solving the equations of heat conduction. Next, the occurrence limits of heatstreaks for reduction in thickness and interface temperature in a roll bite were evaluated experimentally and numerically in cold rolling experiments of stainless steel (SUS430) with two kinds of lubricants. Also, the thermal stability of two lubricants was measured by thermal balance experiments. Consequently, the limit of interface temperature due to heatstreaks calculated numerically is almost constant in a lubricant, which suggests that an outbreak of heatstreaks is mostly dependent on the thermal stability of lubricant. Also, larger quantity of synthetic ester is considered to give higher heatstreak resistance in cold rolling of stainless steel.

Copyright © 1993 by The American Society of Mechanical Engineers
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