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Precise calculation of average strain and average strain rate considering roll elastic flattening
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作者 BAO Wenshuai WANG Wei ZHANG Guomin 《Baosteel Technical Research》 CAS 2015年第2期14-17,共4页
Considering roll elastic flattening, new equations were proposed to calculate the average strain ε and average strain rate ε- in the hot strip rolling process. By comparing the proposed equations with currently used... Considering roll elastic flattening, new equations were proposed to calculate the average strain ε and average strain rate ε- in the hot strip rolling process. By comparing the proposed equations with currently used equations ,it was observed that the strain rate of thick strip and strain are not sensitive to roll elastic flattening. However,for thin strip, a noticeable calculated difference in the strain rate occurred when roll elastic flattening was considered. 展开更多
关键词 hot strip rolling roll elastic flattening STRAIN strain rate
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Influence of Roll Elastic Deformation on Gaugemeter Equation for Plate Rolling
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作者 HU Xian-lei WANG Jun +2 位作者 WANG Zhao-dong LIU Xiang-hua WANG Guo-dong 《Journal of Iron and Steel Research International》 SCIE EI CAS CSCD 2004年第2期25-29,共5页
The error of gaugemeter equation decreases the gap setting precision.The precision of gaugemeter equation is strongly influenced by plate width,work roll radius,backup roll radius,work roll crown,backup roll crown and... The error of gaugemeter equation decreases the gap setting precision.The precision of gaugemeter equation is strongly influenced by plate width,work roll radius,backup roll radius,work roll crown,backup roll crown and rolling force.And these influences are hard to measure.All these factors are converted to roll deflection deformation and roll flattening deformation for calculation.In order to calculate the deformation,the theory of influence function method was adopted.By using simulation program,the influence of these factors on deformation was obtained.Then a simple model can be built.With this model,it is convenient to analyze the influence of different factors on gaugemeter equation. 展开更多
关键词 rollING PLATE elastic deformation influence function method roll flattening
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Roll Flattening Analytical Model in Flat Rolling by Boundary Integral Equation Method 被引量:7
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作者 XIAO Hong YUAN Zheng-wen WANG Tao 《Journal of Iron and Steel Research International》 SCIE EI CAS CSCD 2013年第10期39-45,共7页
In order to improve rolled strip quality, precise plate shape control theory should be established. Roll flat- tening theory is an important part of the plate shape theory. To improve the accuracy of roll flattening c... In order to improve rolled strip quality, precise plate shape control theory should be established. Roll flat- tening theory is an important part of the plate shape theory. To improve the accuracy of roll flattening calculation based on semi infinite body model, especially near the two roll barrel edges, a new and more accurate roll flattening model is proposed. Based on boundary integral equation method, an analytical model for solving a finite length semi infinite body is established. The lateral surface displacement field of the finite length semi-infinite body is simulated by finite element method (FEM) and lateral surface displacement decay functions are established. Based on the boundary integral equation method, the numerical solution of the finite length semi-infinite body under the distribu ted force is obtained and an accurate roll flattening model is established. Different from the traditional semi-infinite body model, the matrix form of the new roll flattening model is established through the mathematical derivation. The result from the new model is more consistent with that by FEM especially near the edges. 展开更多
关键词 roll flattening analytical model finite length semi-infinite body boundary integral equation method fi- nite element method
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Plate Shape Control Theory and Experiment for 20-high Mill 被引量:5
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作者 Zheng-wen YUAN Hong XIAO 《Journal of Iron and Steel Research International》 SCIE EI CAS CSCD 2015年第11期996-1001,共6页
Roll flattening theory is an important part of plate shape control theories for 20-high mill. In order to improve the accuracy of roll flattening calculation for 20-high mill, a new and more accurate roll flattening m... Roll flattening theory is an important part of plate shape control theories for 20-high mill. In order to improve the accuracy of roll flattening calculation for 20-high mill, a new and more accurate roll flattening model was proposed. In this model, the roll barrel was considered as a finite length semi-infinite body. Based on the boundary integral equation method, the numerical solution of the finite length semi-infinite body under the distributed force was obtained and an accurate roll flattening model was established. Coupled with roll bending model and strip plastic deformation, a new and more accurate plate control model for 20-high mill was established. Moreover, the effects of the first intermediate roll taper angle and taper length were analyzed. The tension distribution calculated by analytical model was consistent with the experimental results. 展开更多
关键词 20-high mill roll flattening finite length semi-infinite body boundary integral equation method plate shape control
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