Analysis of transient heat source and coupling temperature field during cold strip rolling

• Published in: International journal of advanced manufacturing technology Vol. 95; no. 1-4; pp. 835 - 846
• Main Authors: Yang, Lipo, Jiang, Zhengyi, Zhu, Jianxu, Yu, Huaxin
• Format: Journal Article
• Language: English
• Published: London Springer London 01-03-2018; Springer Nature B.V
• Subjects: Air cooling; Boundary conditions; CAE) and Design; Cold; Cold rolling; Computer simulation; Computer-Aided Engineering (CAD; Conduction cooling; Conduction heating; Conductive heat transfer; Deviation; Engineering; Heat; Heat transfer coefficients; Industrial and Production Engineering; Mechanical Engineering; Media Management; Original Article; Roll gap; Strip; Temperature distribution; Temperature gradients; Variations; Uneven roll gap heat resource; Transient lateral temperature difference; Friction heat; Cold rolled strip; Deformation heat
• ISSN: 0268-3768; 1433-3015
• DOI: 10.1007/s00170-017-1262-5

In the process of cold thin strip rolling, the effect of the roll gap heat source on the transient temperature of cold rolled strip is very significant, and especially for the lateral temperature difference fluctuation which easily leads to the additional shape deviation of the rolled strip. In this study, according to the new heat resource model, the coupled temperature field model with high precision can be established, and the influence of the heat resource on the transient temperature of the cold rolled strip can be obtained by comprehensively considering the emulsion heat transfer coefficient, the air cooling, and the heat conduction boundary conditions. Based on the above models and the actual working parameters, several cases were performed to show the detailed analyses of the transient temperature distributions under various rolling conditions. The results at different strip positions show that the lateral distributions of the roll gap heat source and the strip transient temperature at every stand or pass can be simulated well. This study can improve the calculation precision of the transient lateral temperature difference for the complex online shape deviations during cold thin strip rolling.