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Heat Transfer Mechanism for Roller Quenching with an Ultrathick Plate
Author(s) -
Tian Xiu-Hua,
Wang Qing-Hai,
Fu Tian-Liang,
Wang Zhao-Dong,
Wang Guo-Dong
Publication year - 2021
Publication title -
steel research international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.603
H-Index - 49
eISSN - 1869-344X
pISSN - 1611-3683
DOI - 10.1002/srin.202100014
Subject(s) - quenching (fluorescence) , nozzle , materials science , heat transfer , thermal conduction , mechanism (biology) , mechanics , flow (mathematics) , temperature gradient , composite material , thermodynamics , metallurgy , optics , physics , meteorology , quantum mechanics , fluorescence
The complexity of roller quenching equipment restricts research on the heat transfer mechanism of ultrathick plates, and the cooling law requires further clarification. In this study, the distributions of temperature gradient, average cooling speed, and heat loss during quenching are analyzed using a 220 mm thick steel plate, and inverse heat conduction is used to determine the surface heat transfer conditions. An ultrathick steel plate is subjected to high‐pressure and low‐pressure water in turn for strong and lasting cooling. Due to the different flow regions on the upper and lower surfaces, the flow from the lower nozzle is slightly higher than that from the upper nozzle, thereby resulting in a good cooling symmetry between the upper and lower surfaces. The results provide an important basis for the optimization of roller quenching technology for ultrathick steel plates.