Transient Thermal Analysis of Cold Strip Rolling Considering Rough Surface Contacts

Abstract:

This paper presents a transient thermal analysis of cold strip rolling, integrating both the microscale asperity deformation and macroscale strip deformation. A statistical characterisation was carried out to obtain the contact pressure and thermal contact conductance at the roll-strip interface. To address the effects of rolling speed and temperature rise, Johnson-cook constitutive model of yielding strength was employed to incorporate the strain rate and temperature variation in the analysis. It was found that the developed model can successfully predict both the interface contact stress and temperature rise in the rolling bite.

• Periodical: Key Engineering Materials (Volume 725)
• Pages: 548-553
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.725.548
• Online since: December 2016
• Authors: Chu Han Wu, Pei Lei Qu, Liang Chi Zhang*, Shan Qing Li, Zheng Lian Jiang
• Keywords: Cold Rolling, Finite Element, Rough Surface, Transient Thermal Analysis

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