Analysis of Hot Tandem Rolling Force with Logarithmic Velocity Field and EA Yield Criterion  

作　　者：Jian-zhao CAO De-wen ZHAO Shun-hu ZHANG Wen PENG Shu-zong CHEN Dian-hua ZHANG 

机构地区：[1]State Key Laboratory of Rolling and Automation,Northeastern University

出　　处：《Journal of Iron and Steel Research International》2014年第3期295-299,共5页

基　　金：Sponsored by National Natural Science Foundation of China(51074052,50734002)

摘　　要：In order to analyze the hot tandem roiling force, a new logarithmic velocity field is proposed. Using the field and linear EA （equal area） yield criterion, the plastic deformation power for plate rolling is analyzed, and the friction power is obtained based on the co-line vector inner product method. Then analytical solution of plate rolling power functional is obtained. Finally, by minimizing the power functional, the rolling torce and torque are received. Compared with those measured ones in hot tandem rolling on-line, the calculated rolling forces are in good agreement with the actual measured ones since the maximum error is less than 12~. Moreover, the effects of various rolling conditions such as thickness reduction, friction factor and shape factor, upon separating force, location of neutral an- gle, and stress state coefficient are discussed systematically.In order to analyze the hot tandem roiling force, a new logarithmic velocity field is proposed. Using the field and linear EA （equal area） yield criterion, the plastic deformation power for plate rolling is analyzed, and the friction power is obtained based on the co-line vector inner product method. Then analytical solution of plate rolling power functional is obtained. Finally, by minimizing the power functional, the rolling torce and torque are received. Compared with those measured ones in hot tandem rolling on-line, the calculated rolling forces are in good agreement with the actual measured ones since the maximum error is less than 12~. Moreover, the effects of various rolling conditions such as thickness reduction, friction factor and shape factor, upon separating force, location of neutral an- gle, and stress state coefficient are discussed systematically.

关 键 词：hot tandem rolling rolling force logarithmic velocity field EA yield criterion analytical solution 

分 类 号：TG335.11[金属学及工艺—金属压力加工]