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residual curvature of Longitudinal Profile Plate Roller in Leveling Process

Journal of Iron and Steel Research International 2013年第10期20卷 23-27页

作者： CUI Li SHI Quan-qiang LIU Xiang-hua HU Xian-lei Aviation Industry Corporation of China Shenyang Aircraft Corporation Institute of Metal Research Chinese Academy of Sciences State Key Laboratory of Rolling and Automation Northeastern University

Roller leveling process of longitudinal profile （LP） plate is hardly studied because plate thickness changes. Deformation characteristics and residual curvature during LP plate leveling process were investigated based on curva ture integral by elastic plastic differences. It was found that entry intermesh section is reduced with increasing thick- ness and entry intermesh should be from 0.7 to 1.1 mm for LP plate with 42/54 mm in thickness. In order to get satisfactory flatness along longitudinal direction, small entry intermesh should be selected and exit intermesh should be 0 ram. In addition, thickness section for I.P plate which can be leveled by 11 roller leveler is from 24 to 60 mm. Finally, there is an intermesh schedule that could level LP plate with initial curvature less than elastic limit curvature.

关键词： roller leveling LP plate intermesh residual curvature residual stress

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Longitudinal profiled plate straightening process based on curvature integral method

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Journal of Iron and Steel Research International 2021年第3期28卷 291-302页

作者： Jian-liang Sun Kai Li Meng-qian Sun Xiang-hui Lu Yan Peng National Engineering Research Center for Equipment and Technology of Cold Strip Rolling Yanshan UniversityQinhuangdao066004HebeiChina Department of Mechatronics Engineering Hebei Construction Material Vocational and Technical CollegeQinhuangdao066004HebeiChina

Considering the variable cross section thickness of longitudinal profiled plate and the dynamic reductions of straightening rolls,an analytical model combining curvature integral method with linear decreasing straightening scheme was proposed to investigate the longitudinal profiled plate straightening ***,the calculation flow and solution algorithm of longitudinal profiled plate straightening process were *** verify the proposed model,calculated straightening forces were compared with the measured values,and very good agreements were ***,the reduction,contact angle,reverse bending curvature,residual curvature,straightening force and straightening moment of longitudinal profiled plate in the straightening process were calculated and analyzed,and the calculated results show that the curvature integral method can be used to reveal the mechanism of longitudinal profiled plate straightening.

关键词： Longitudinal profiled plate straightening curvature integral method Linear decreasing straightening scheme residual curvature

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