Study on Convergence, Calculation Speed and Precision of Flatness Analysis Method for Cold Rolling Strip

Abstract:

The key models of flatness analysis method are the strip plastic deformation model (SPDM) and the roll stack elastic deformation model (REDM). The traditional method uses the SPDM to calculate the distribution of rolling force, and the REDM is adopted to calculate the profile of exit strip. The reverse iteration method uses the REDM to calculate the distribution of rolling force, while the SPDM is adopted to calculate the profile of exit strip. The model coupling method integrates SPDM and REDM as one set equations through their internal relation. In this paper, the basic thoughts of three methods are introduced. Through a typical example, the convergence, calculation speed and precision of three different methods are analyzed. It is found that the calculation precision of the three methods are almost the same, but the model coupling method is more outstanding than other two methods on the convergence and calculation speed, so the model coupling method is the best choice for flatness analysis.

• Periodical: Advanced Materials Research (Volumes 941-944)
• Pages: 1792-1796
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.941-944.1792
• Online since: June 2014
• Authors: Dong Cheng Wang*, Zhu Qing Zhang, Hong Min Liu
• Keywords: Flatness Analysis Method, Relaxation Factor Method, Roll Stack Elastic Deformation, Strip Plastic Deformation

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