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

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...

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Bibliographic Details
Published in:Key engineering materials 2020-02, Vol.830, p.43-51
Main Authors: Li, Lian Jie, Wang, En Rui, Jiang, Zheng Yi, Xie, Hai Bo, Liu, Xu, Liu, Tian Wu
Format: Article
Language:English
Subjects:
Automobile industry
Computer simulation
Deformation effects
Elastic deformation
Finite element method
High strength steel
High strength steels
Hot rolling
Mathematical analysis
Mathematical models
Mechanical properties
Plastic deformation
Roll stacks
Steel products
Strip
Temperature effects
Three dimensional models
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Summary: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.
ISSN:1013-9826
1662-9795
1662-9795
DOI:10.4028/www.scientific.net/KEM.830.43