Numerical analysis of the strip crown inheritance in tandem cold rolling by a novel 3D multi-stand FE model

Abstract The strip shape inheritance model is widely applied to improve the quality in tandem cold rolling (TCR). However, mechanism still currently unclear. To bridge this gap, paper presents a new numerical method for calculating crown factor. In addition, effects of entry on exit and flatness were quantitatively analysed at each stand TCR using novel three-dimensional (3D) multi-stand elastic–plastic finite element (FE) model. results show that factor increases slowly from S1 (stand 1) S3 3), while rising sharply S5 5), reaching peak value 0.495 ?m/?m S5. This trend coincides with plastic rigidity, which verifies dependent rigidity. Furthermore, variation under different crowns jointly influenced by pass reduction Moreover, deformation resistance both These findings not only offer fresh perspective understand inheritance, but also provide an important basis optimising control process.