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| Residual stress reduction of hot rolling strip based on finite element method and experiment |
| BIAN Hao1， SHAO Jian2， XIA Xiao-ming1， QIU Zeng-shuai2， HE An-rui2 |
（1. Hot Strip Mill， Baosteel Shanghai Meishan Iron and Steel Co.， Ltd.， Nanjing 210039， Jiangsu， China
2. National Engineering Research Center for Advanced Rolling， University of Science and Technology Beijing，Beijing 100083， China） |
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Abstract Study on residual stress reduction can improve strip shape quality. Finite element method and the corresponding experimental verification have been widely used in industrial production. Research on temperature and stress coupled model based on finite element and experimental verification in the process of hot rolling laminar cooling is of positive significance for solving strip uneven transverse cooling，uneven stress and buckling. By using ABAQUS finite element method，temperature and stress coupled model of laminar cooling on hot strip mill is established，and the coupling calculation of temperature，phase transformation and stress is realized. Temperature test， material microstructure test and stress test are used for model validation. The result shows that the initial temperature difference in strip transverse direction and the edge masking are significant to reduce residual stress. In this paper，an example is given to reduce the strip residual stress by improving the distribution of initial temperature difference，and the correctness of the proposed method and the conclusion is verified.
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Received: 28 April 2016
Published: 02 November 2016
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2016, Vol. 51 
