Journal of the Japan Society for Technology of Plasticity
Online ISSN : 1882-0166
Print ISSN : 0038-1586
ISSN-L : 0038-1586
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Residual Deflection Mechanism for Back-Up Roll Consisting of Shrink-Fitted Sleeve and Arbor
Nao-Aki NODAYoshikazu SANOYasushi TAKASEYutarou SHIMODAGuowei ZHANG
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2017 Volume 58 Issue 672 Pages 66-71

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Abstract

First, back-up rolls for rolling require toughness, particularly in the shaft portion, and high-hardness in the sleeve portion. The back-up rolls are classified into two types; one is a single-solid type, and the other is a shrink-fitted construction type consisting of a sleeve and an arbor. The shrink-fitted back up roll has several advantages, for example, different materials can be chosen and the arbor can be reused by replacing the damaged sleeve. Therefore, the shrinkfitted back-up rolls are economical. However, residual deflection becomes a major problem for the shrink-fitted back-up roll. Elucidating the mechanism of the occurrence of residual deflection and devising countermeasures are important issues. Unfortunately conducting a real experiment is difficult because of much time and huge cost. In this paper, we reproduce this phenomenon by elastic FEM analysis, establish a simulation method, and elucidate the mechanism behind underlying residual deflection.

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© 2017 The Japan Society for Technology of Plasticity
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