Abstract
The air-cooling transport process of AZ31B magnesium alloy plate was investigated and carried out under different initial cooling temperatures and different sample sizes at a transport velocity of 0.3 m/s. In order to provide the theoretical basis for the actual industrial rolling production, a detailed analysis of the temperature distributed along both the width direction and the thickness direction under different conditions was performed. Through the processing of the experimental data, the emissivity of AZ31B plate in the air-cooling transport process, as an important heat transfer parameter, was modeled accurately. After that, based on the establishment of the emissivity calculation model, the empirical formula of Stefan-Boltzmann was modified and optimized to be the temperature control model for the air-cooling process in consideration of the heat transfer characteristics of magnesium alloy. Finally, combining the finite element numerical simulation and the experimental results, comprehensive heat transfer coefficient between the AZ31B plate and the external environment during the transport process was accurately defined and further fitted about the experimental parameters.
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