Buckling Analysis of a Heated Steel Strip in a Continuous Annealing Furnace

[+] Author and Article Information
H. Luo

SMTS, Nortel/Micom Corp., Simi Valley, CA 93063

W. S. Dunbar

Dept. of Mech. Eng., University of Victoria; ACRES International Ltd., 5259 Dorchester Road, Niagara Falls, Ontario, Canada L2E 6W1

J. E. Moore

Dept. of Mech. Eng., University of Victoria, Victoria, Canada

J. Manuf. Sci. Eng 121(1), 76-83 (Feb 01, 1999) (8 pages) doi:10.1115/1.2830578 History: Received February 01, 1992; Revised December 01, 1997; Online January 17, 2008


Thermal buckling is a problem that arises in the operation of continuous annealing lines for thin steel strips. In this paper finite element analysis (FEA) is carried out on the furnace buckling of thin steel strips. The results obtained agree very well with observations of furnace buckling made in actual operation. It has been quantitatively shown that the main cause of furnace buckling is the combined effect of high heating temperature coupled with line tension on a strip. This finding is based on the comparison of numerical results with the experimental data collected at a continuous annealing line of Armco Ashland Works in Texas. The analysis has revealed the need for accurate control and monitoring of annealing line heating system in order to avoid buckling of thin steel strips. In addition, the results presented, herein, could be useful in the design of a heating system that ensures buckling free operation.

Copyright © 1999 by The American Society of Mechanical Engineers
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