Method for Outlet Temperature Control during Warm Rolling of AZ31 Sheets with Heated Rolls

Sun, Tao; Li, Jianping

doi:10.2355/isijinternational.isijint-2016-744

Cited by 3 publications

(1 citation statement)

References 9 publications

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“…However, no experimental work was performed to validate the simulation results, and the constant normalization method used for modeling increased the prediction error. Sun et al [27] developed a polynomial mathematical model combining the finite element method (FEM) and experimental data to predict the outlet temperature of the heated-roll warm rolling process for AZ31 plates, but the actual effect of the process parameters on the temperature was not described in the final prediction model. In addition, as a key parameter, the fixed thermal transfer coefficient between the strip and the work roll used in Reference [28] does not accurately describe the contact heat transfer efficiency.…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation and Temperature Modeling of Magnesium Alloy Strip Rolled by Heated Roll

Mei,

Chen,

Bao

et al. 2023

Metals

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A prediction model for the outlet temperature of magnesium alloy strips in the process of heated-roll rolling was established by using linear fitting and nonlinear regression methods. By inputting the rolling parameters into the model, the outlet temperature of the strip can be accurately predicted, which will then optimize and regulate the properties and microstructures of the magnesium alloys in the rolled form. To verify the reliability of the model, heat transfer experiments of the magnesium alloy rolled by heated rolls were carried out. The results show that under the same conditions, the actual outlet temperature measured experimentally matches well with the outlet temperature predicted by the model, and the relative error is kept within 10%. In the modeling process, Deform V11.0 software was used to simulate the thermal–mechanical behavior of the magnesium alloy rolled by the heated roll. In the process of analyzing the simulated heat transfer, it was found that the temperature rise of the surface and the core is divided into three identical stages: the slow rise, the fast rise, and the thermal equilibrium stages. In addition, the mechanical behavior of the rolling deformation zone was also analyzed, and the strip was subjected to direct heat transfer from the heated rolls during the hot rolling process so that the softening played a major role and the stress value gradually decreased from the middle of the deformation zone to the inlet end and the outlet end. This is so that it can be known that the process of being rolled by the heated rolls not only improves the rolling efficiency, but also ensures the deformation temperature and obtains fine grains.

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Section: Introductionmentioning

confidence: 99%