Abstract
Hot ductility of HRB500E vanadium-containing steel rebar was study with thermal simulation test and the secondary cooling model was established based on the relationship between the cooling water and the casting speed. The solidification cooling curves and the temperature fields of HRB500E were simulated with the PROCAST software. The result of the hot ductility and the pin shooting experiment shows that the casting straightening temperature should be above 902 °C and the secondary cooling model was feasible and accurate. Finally the high-quality billet of HRB500E was obtained.
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