Effects of rolling force on strip shape during tandem cold rolling using a novel multi‐stand FE model

2021 ◽  
Author(s):  
Lianjie Li ◽  
Haibo Xie ◽  
Tianwu Liu ◽  
Xingsheng Li ◽  
Xu Liu ◽  
...  
Keyword(s):  
Cold Rolling ◽  
Rolling Force ◽  
Fe Model ◽  
Tandem Cold Rolling ◽  
Strip Shape

Target Curve Setting Model for Automatic Flatness Control on Stand 5 of 2180 mm Tandem Cold Rolling Mill

2014 ◽  
Vol 665 ◽  
pp. 37-41 ◽  
Author(s):  
Guang Hui Yang ◽  
Jian Guo Cao ◽  
Jie Zhang ◽  
Hong Bo Li ◽  
Jie Zheng
Keyword(s):  
Cold Rolling ◽  
Temperature Stress ◽  
Rolling Mill ◽  
Cold Rolling Mill ◽  
Tandem Cold Rolling ◽  
Temperature Distributions ◽  
Strip Shape ◽  
Flatness Control ◽  
Transverse Temperature ◽  
Stress Compensation

Based on the theory of target curve, a method of improving flatness target curve is proposed. The transverse temperature distributions of strip are measured and described with a biquadratic expression, and the statistics method is used to analyze the temperature distributions. Finally, the additional temperature stress compensation is calculated to improve the strip shape.

scholarly journals Modeling of Strip Shape during Cold Rolling of Thin Strip

2010 ◽  
Vol 443 ◽  
pp. 9-14 ◽  
Author(s):  
Zheng Yi Jiang ◽  
X.Z. Du ◽  
Yan Bing Du ◽  
Dong Bin Wei ◽  
Matthew Hay
Keyword(s):  
Finite Element ◽  
Cold Rolling ◽  
Rolling Force ◽  
Thickness Distribution ◽  
Simulation Models ◽  
Element Model ◽  
Thin Strip ◽  
Strip Shape ◽  
Element Simulation ◽  
Strip Quality

Strip shape is an important factor affecting the strip quality significantly during cold rolling of thin strip. In the paper, finite element simulation models of the strip shape in cold rolling for both symmetrical and asymmetrical rolling cases were successfully developed. The strip edge drop and the effect of the rolling force on the strip shape (the thickness distribution along the strip width) have been obtained. The developed finite element model has been verified with the experimental value, which shows they are in good agreement. The obtained results are applicable to control the rolled thin strip shape during cold rolling practice.

scholarly journals Thin Strip Profile Control Capability of Roll Crossing and Shifting in Cold Rolling Mill

2013 ◽  
Vol 773-774 ◽  
pp. 70-78 ◽  
Author(s):  
Abdulrahman Aljabri ◽  
Zheng Yi Jiang ◽  
Dong Bin Wei ◽  
Xiao Dong Wang ◽  
Hasan Tibar
Keyword(s):  
Cold Rolling ◽  
Rolling Mill ◽  
Rolling Force ◽  
Work Roll ◽  
Rolling Process ◽  
Thin Strip ◽  
Strip Rolling ◽  
Strip Shape ◽  
Strip Profile ◽  
Profile Control

Controlling cold strip profile is a difficult and significant problem has been found in industry during thin strip rolling. At present choosing the new type of strip rolling mill is the one of main methods to control the strip shape quality in cold rolling. The influences of rolling process parameters such as the work roll cross angle and work roll shifting on the strip shape and profile of thin strip are recognised throughout this study. The results show that the roll crossing and shifting is efficient way to control the strip shape. The increase of the work roll crossing angle would lead to improve the strip profile significantly by decreasing the exit strip crown and edge drop. The strip profile would be enhanced if the axial roll shifting was increased. Moreover, the total rolling force was analysed in detail by changing the roll cross angle and axial shifting roll.

Application of BP-GA Algorithm in Optimization of Process Parameters in Thin Strip Tandem Cold Rolling

2013 ◽  
Vol 774-776 ◽  
pp. 1042-1045
Author(s):  
Li Chen Wang ◽  
Ji Shun Song ◽  
Jian Zhang ◽  
Pan Li
Keyword(s):  
Neural Network ◽  
Genetic Algorithm ◽  
Cold Rolling ◽  
Process Parameters ◽  
Bp Neural Network ◽  
Rolling Force ◽  
Thin Strip ◽  
Tandem Cold Rolling ◽  
Optimization Of Process Parameters ◽  
Ga Algorithm

The process parameters of thin strip tandem cold rolling were optimized based on the BP neural network and the genetic algorithm with which the rolling energy consumption required was reduced and could contribute to the rolling force and the thickness control.

Calculation and Analysis of Tandem Cold Rolling Force Parameters

2014 ◽  
Vol 1004-1005 ◽  
pp. 1109-1113
Author(s):  
Jin Lan Bai ◽  
Hong Zhi Pan
Keyword(s):  
Tensile Stress ◽  
Cold Rolling ◽  
Rolling Force ◽  
Measured Data ◽  
Strip Flatness ◽  
Tandem Cold Rolling ◽  
Thermal Crown ◽  
Flatness Control ◽  
Arc Lengths ◽  
Contact Arc

In order to improve the accuracy of rolling force parameters,the elastic deformation and pressure between rolls of tandem cold rolling are calculated using divided element method in this paper. Bland-Ford model is used to calculate the rolling force, and the lengths of flattening contact arcs of each element are calculated. Considering the flattening contact arc lengths and tensile stress synthetically, rolling force parameters are calculated iteratively. Then the corresponding procedure is developed, and the distribution of rolling force, pressure between rolls and tensile stress are calculated with this procedure. The results are basically consistent with the measured data, and it will be useful to thermal crown calculation and strip flatness control.

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