Optimization Model of Process Parameters for Full-Plate Long-Roll Straightening considering Equipment Bounce

Xiaoyu Zhu,Peisheng Han,Xiaoxiao Liu,Xiaogang Wang,Rossana Dimitri

doi:10.1155/2021/6647769

Xiaoyu Zhu, Peisheng Han + Show 3 more

Open Access

https://doi.org/10.1155/2021/6647769

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Abstract

Roll straightening is an important process link in sheet production. Due to the step change of the straightening force during the straightening bite and the tail flick, the whole-plate length straightening and pressing process changes will affect the straightening effect. Based on the solution of the curvature integral straightening process, this paper introduces the stiffness coefficient of the straightening equipment. Through C language programming, the iterative solution has been realized, and the process parameters of the dynamic change of the straightening reduction have been obtained. The enumeration method was used to establish a calculation method to optimize the entire board-length straightening process. The laboratory comparison of the 11-roll straightening machine proves that the straightening process optimization model meets the application requirements.

Highlights

As an important process step in sheet production, directly determines product quality. e setting and optimization of process parameters have been the focus of research by domestic and foreign scholars due to the nonlinearity of the metal material and the stiffness of the straightening equipment
Gruber and Hirt [3] performed the analysis of curvature change and residual stress during the straightening process based on the finite element method
According to the calculation model in this paper, the calculation is performed on the plate with length × width × height of 1000 mm × 350 mm × 4∼6 mm, assuming that the initial curvature is 0, the material is isotropic, and there is no residual stress distribution. e

Summary

Introduction

As an important process step in sheet production, directly determines product quality. e setting and optimization of process parameters have been the focus of research by domestic and foreign scholars due to the nonlinearity of the metal material and the stiffness of the straightening equipment. Cui [1] deduced the calculation method of each parameter in the straightening process by studying the continuous supported beam model. He [2] performed an analysis by reinforcing the material and concluded that the large deformation strategy residual-curvature control is better than the small deformation strategy. E straightening of the plate is a process of repeated bending; curvature is a physical quantity that describes the degree of curvature of an object in space

Li Li

Roll i

Parameter value

Residual curvature Residual curvature

Conclusion