University of Oulu

Sampo Uusikallio, Sami Koskenniska, Joonas Ilmola, Jussi Paavola, Aarne Pohjonen, Jari Larkiola, Jukka Kömi, Determination of effective heat transfer coefficient for water spray cooling of steel, Procedia Manufacturing, Volume 50, 2020, Pages 488-491, ISSN 2351-9789,

Determination of effective heat transfer coefficient for water spray cooling of steel

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Author: Uusikallio, Sampo1; Koskenniska, Sami1; Ilmola, Joonas1;
Organizations: 1Materials and Mechanical Engineering, Centre for Advanced Steels Research, University of Oulu, P.O. Box 8000, FI-90014, University of Oulu, Finland
Format: article
Version: published version
Access: open
Online Access: PDF Full Text (PDF, 0.7 MB)
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Language: English
Published: Elsevier, 2020
Publish Date: 2020-09-15


Accurate control of the temperature of the workpiece is crucial when carrying out thermal processing of steel. Effective heat transfer coefficient for water cooling of hot rolled steel was calibrated using spray nozzles with different amounts of water flux. Austenitic stainless steel was chosen for the studies in order to avoid the release of latent heat, which would affect the result in the case of carbon steels. Three different measurement sites acquired with thermocouples were used, namely in the middle and at the quarter distance from both top and bottom surfaces. The heat transfer coefficient was fitted to the experimental data using a computational model, which calculated the time-dependent temperature distribution within the steel slab. The model was validated by altering the experimental exposure time to the water spray and compared the model prediction to the observed result. The calibrated model provides the capability to design and carry out cooling routes in thermomechanical processing of steel in practice.

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Series: Procedia manufacturing
ISSN: 2351-9789
ISSN-E: 2351-9789
ISSN-L: 2351-9789
Volume: 50
Pages: 488 - 491
DOI: 10.1016/j.promfg.2020.08.088
Host publication: 18th International Conference on Metal Forming 2020
Host publication editor: Szeliga, Danuta
Muszka, Krzysztof
Conference: International Conference on Metal Forming
Type of Publication: A4 Article in conference proceedings
Field of Science: 216 Materials engineering
Funding: The research was done within the program ”Breakthrough Steels and Applications” of the Digital, Internet, Materials & Engineering Co-Creation, DIMECC Oy. The authors would like to thank the Finnish Funding Agency for Technolog yand Innovation (Tekes) for financial support. Jenny and Antti Wihuri foundation and Tauno Tönning foundation are also acknowledged for their financial support to the corresponding author. Outokumpu Stainless is gratefully acknowledged for providing the material for this study. One of the authors (AP )acknowledges financial support from the Academy of Finland through Genome of Steel project
Copyright information: © 2020 The Authors. Published by Elsevier B.V.This is an open access article under the CC BY-NC-ND license (