The Nonlinear System Identification of Rolling Force Model in the Production of Hot Strip Rolling

2015 ◽  
Vol 12 (16) ◽  
pp. 5977-5985
Author(s):  
Yonghong Xie
Keyword(s):  
System Identification ◽  
Nonlinear System ◽  
Rolling Force ◽  
Nonlinear System Identification ◽  
Force Model ◽  
Hot Strip Rolling ◽  
Strip Rolling ◽  
Hot Strip

Prediction of Rolling Force for Hot Strip Rolling Based on RFR

2021 ◽  
Author(s):  
Ren Yan ◽  
Su Nan ◽  
Yang Jing ◽  
Gao Xiaowen ◽  
Wang Huimin ◽  
...  
Keyword(s):  
Rolling Force ◽  
Hot Strip Rolling ◽  
Strip Rolling ◽  
Hot Strip

Improvement of Methods of Calculation of Forces in Hot Strip Rolling

2020 ◽  
Vol 299 ◽  
pp. 577-581
Author(s):  
Georgy L. Baranov
Keyword(s):  
Rolling Force ◽  
Contact Stresses ◽  
Plasticity Condition ◽  
Neutral Position ◽  
Hot Strip Rolling ◽  
Strip Rolling ◽  
Normal Contact ◽  
Primary Stress ◽  
Hot Strip ◽  
Frictional Coefficients

A new solution Karman’s equation with the Mises plasticity condition is proposed for determining contact stresses in the slip zones for hot strip rolling. Replacement of the precise plasticity condition by an approximate condition in terms of primary stress leads to a substantial decrease in the length of slip zones and to increase of the rolling force. It was shown that, even at high frictional coefficients, the length of slip zones forms a significant part of the length of deformation region. On the basis of the obtained solutions the techniques for plotting curves of the normal contact stresses, determining the length of the slip zones, the neutral position of the cross section and rolling force refined.

Simplified Weighted Velocity Field for Prediction of Hot Strip Rolling Force by Taking into Account Flatening of Rolls

2014 ◽  
Vol 21 (7) ◽  
pp. 637-643 ◽  
Author(s):  
Dian-hua Zhang ◽  
Jian-zhao Cao ◽  
Jiu-jing Xu ◽  
Wen Peng ◽  
De-wen Zhao
Keyword(s):  
Velocity Field ◽  
Rolling Force ◽  
Hot Strip Rolling ◽  
Strip Rolling ◽  
Hot Strip

scholarly journals Numerical Simulation of Strip Shape of High-Strength Steel during Hot Rolling Process

2020 ◽  
Vol 830 ◽  
pp. 43-51
Author(s):  
Lian Jie Li ◽  
Hai Bo Xie ◽  
Xu Liu ◽  
Tian Wu Liu ◽  
En Rui Wang ◽  
...  
Keyword(s):  
Elastic Deformation ◽  
High Strength Steel ◽  
Rolling Force ◽  
High Strength ◽  
Effect Of Temperature ◽  
Fe Model ◽  
Hot Strip Rolling ◽  
Strip Rolling ◽  
Hot Strip ◽  
Strip Crown

High-strength steel is widely applied due to its excellent mechanical properties. However, its high strength in turn brings great difficulties to production and processing such as hot strip rolling owing to the high rolling force, which results in large elastic deformation of roll stack and poses a huge challenge to the control of strip crown and flatness. In this paper, A three-dimensional (3D) elastic-plastic coupled thermo-mechanical finite element (FE) model for hot strip rolling of high-strength steel is developed and then verified experimentally. This model not only calculates the elastic deformation of rolls and plastic deformation of strip simultaneously, but also considers the effect of temperature variation during hot strip rolling. Based on this valid model, the effects of bending force and shifting value of work roll (WR), back-up roll (BR) size, entrance strip crown and rolling force on strip crown have been investigated quantitatively. The results obtained provide valuable guidelines for industrial strip production.

scholarly journals Dynamic Model of the Hot Strip Rolling Mill Vibration Resulting from Entry Thickness Deviation and Its Dynamic Characteristics

2019 ◽  
Vol 2019 ◽  
pp. 1-11 ◽  
Author(s):  
Xinxin Wang ◽  
Xiaoqiang Yan
Keyword(s):  
Dynamic Model ◽  
Dynamic Characteristics ◽  
Rolling Mill ◽  
Model Parameters ◽  
Force Model ◽  
Hot Strip Rolling ◽  
Strip Rolling ◽  
Hot Strip ◽  
Thickness Deviation ◽  
Rolling Mill Vibration

The vibration demolding of the crystallizer leads to slab thickness deviation in continuous casting processes. Therefore, in this paper, the dynamic model of the hot strip rolling mill vibration resulting from entry thickness deviation is proposed and its dynamic characteristics are studied. First, the dynamic model of vertical vibration in the hot strip rolling mill is established based on Sims’ rolling force model. Then, the model validity is certified by comparing the simulation with field test data from a 1580 hot strip rolling mill. Finally, we investigate the influence of model parameters on the dynamic characteristics of hot strip rolling mill vibration resulting from entry thickness deviation. The result indicates that hot strip rolling mill vibration resulting from entry thickness deviation can be reduced by increasing the area of the hydraulic cylinder piston side and the entry thickness as well as by decreasing the deformation resistance, rolling speed, and equivalent stiffness.

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