Effects of the Cooling Mode on the Temperature Uniformity of Ultra Heavy Plate Quenching〓

doi:10.12068/j.issn.1005-3026.2013.11.014

Abstract

Abstract: The tank immersion mode and ultra fast continuous cooling mode were adopted for ultra heavy steel plate quenching， through comparing the effects of sustainable cooling and intermittent cooling on the cooling rates of the centre and near surface part and the temperature uniformity along the thickness direction， centre heat conduction and surface heat transfer characteristic of the ultra heavy steel plate during quenching were illustrated. Based on this， optimal quenching schedule was constructed. The results showed that， compared with sustainable continuous quenching， intermittent continuous quenching not only kept the lower surface cooling rate， but also increased centre cooling rate， and the temperature uniformity along the thickness direction was improved remarkably. When the water cooling and air cooling time ratio was 1. 4， the optimization effects appeared obviously.

Key words: ultra heavy steel plates, quenching, ultra fast cooling, temperature uniformity

CLC Number:

TG1563

FU Tianliang， LI Yong， WANG Kun， WANG Zhaodong. Effects of the Cooling Mode on the Temperature Uniformity of Ultra Heavy Plate Quenching〓[J]. Journal of Northeastern University(Natural Science), 2013, 34(11): 1575-1579.

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