<p>Accurately predicting the deformation behavior of metal-clad plates is the key to the rolling process. However, there is still a lack of a reliable model to predict the deformation behavior of three-layered metal plates during asymmetric rolling. To solve this problem, an analytical model was developed to describe the deformation characteristics of the three-layered metal-clad plate during asymmetric rolling. Firstly, the bonding interface shape function is constructed. The rigid-plastic boundary function is established. The deformation zone length model is accurately defined. On this basis, the models of strain, strain rate, layer thickness, velocity field, and total power are further established, and the accurate analytical calculation of the three-layered clad plate is realized. The accuracy of the model was verified by rolling simulation, experiment, and microscopic characterization under different working conditions. The results show that the established velocity field model is highly consistent with the simulation. The minimum relative error of the equivalent strain is 6.94% compared to the experiments. For the thickness ratio after rolling, the minimum relative error is 1.49% compared to the experiments. This model provides theoretical guidance and technical support for on-line prediction and control of the deformation behavior of asymmetric rolling of the three-layered clad plate.</p>

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Modeling and study on deformation characteristics by asymmetric rolling of three-layered clad plate

  • Chao Yang,
  • Lian-Yun Jiang,
  • Fu-Zhen Qiao,
  • Li-Jun Wang,
  • Zhi-Quan Huang,
  • Li-Feng Ma

摘要

Accurately predicting the deformation behavior of metal-clad plates is the key to the rolling process. However, there is still a lack of a reliable model to predict the deformation behavior of three-layered metal plates during asymmetric rolling. To solve this problem, an analytical model was developed to describe the deformation characteristics of the three-layered metal-clad plate during asymmetric rolling. Firstly, the bonding interface shape function is constructed. The rigid-plastic boundary function is established. The deformation zone length model is accurately defined. On this basis, the models of strain, strain rate, layer thickness, velocity field, and total power are further established, and the accurate analytical calculation of the three-layered clad plate is realized. The accuracy of the model was verified by rolling simulation, experiment, and microscopic characterization under different working conditions. The results show that the established velocity field model is highly consistent with the simulation. The minimum relative error of the equivalent strain is 6.94% compared to the experiments. For the thickness ratio after rolling, the minimum relative error is 1.49% compared to the experiments. This model provides theoretical guidance and technical support for on-line prediction and control of the deformation behavior of asymmetric rolling of the three-layered clad plate.