Effect of Idle Roll Bearing Friction on the Hot-Rolling Performance of Single-Roll Drive Mills

[+] Author and Article Information
R. L. Holbrook

The Babcock & Wilcox Company, Alliance, Ohio

C. F. Zorowski

North Carolina State University, Raleigh, N. C.

J. Eng. Ind 89(3), 482-487 (Aug 01, 1967) (6 pages) doi:10.1115/1.3610090 History: Received January 26, 1966; Online August 25, 2011


A study is made of the effects of idle roll drag torque on the hot-rolling performance of single-roll drive mills using two analytical models which consider the nonsymmetry of the deformation process. Predictions of roll load, torque, and exit stock curvature for a specified idle roll drag torque on a given mill setup are obtained by applying an iterative procedure of solution to a series of intermediate rolling parameter results presented in terms of the idle roll neutral point location and strip reduction. In general, it is found that the drag torque increases the stock curvature significantly, is essentially additive to the required drive torque, and decreases the roll load only slightly.

Copyright © 1967 by ASME
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