Abstract
Owing to the short time duration and violent nature of boiling regimes, the steel quench cooling on the Run Out Table is extremely complex, this challenges the prediction of the heat transfer coefficient. In this study, we first established a novel reciprocally moving nozzles platform to experimentally investigate the moving quenching process. Then the two-dimensional transient heat flux, wetting behaviors, and heat transfer mechanism that was influenced by the surface temperature, and moving speed were explored. These results revealed the heat flux reduced with the moving speed but elevated with the surface temperature. The wetted area also expanded linearly with the decrease in temperature. With the aid of the developed two-dimensional transient heat flux, the heat quantity was revealed to decrease with the surface temperature at different speeds, but the decline proportion was much lower than that of MHF (maximum heat flux). Notably, the transient heat flux and heat transfer capacity in two-dimensional favored predicting the temperature field of the steel quenching process under industrial conditions. The findings in this work provided the envision to understand the heat transfer mechanism in the moving quenching cooling and provided a flexible method to investigate cooling in a moving state.
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