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Effect of spatial-temporal behavior of a newly developed cooling system on carbon and stainless steel bar properties
University of Gävle, Faculty of Engineering and Sustainable Development, Department of Building Engineering, Energy Systems and Sustainability Science, Energy Systems and Building Technology.
University of Gävle, Faculty of Engineering and Sustainable Development, Department of Building Engineering, Energy Systems and Sustainability Science, Energy Systems and Building Technology.ORCID iD: 0000-0001-7026-531X
University of Gävle, Faculty of Engineering and Sustainable Development, Department of Building Engineering, Energy Systems and Sustainability Science, Energy Systems and Building Technology.ORCID iD: 0000-0002-3315-5610
University of Gävle, Faculty of Engineering and Sustainable Development, Department of Building Engineering, Energy Systems and Sustainability Science, Energy Systems and Building Technology.ORCID iD: 0000-0001-8306-3987
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2023 (English)Report (Other academic)
Abstract [en]

This report summaries the work within the project ”Effect of spatial-temporal behavior of a newly developed cooling system on carbon and stainless-steel bar properties”. The project was conducted from 2020-01-01 to 2022-12-31 and was co-produced by SSAB, Outokumpu and University of Gävle (UoG). The Knowledge Foundation, SSAB, Outokumpu and UoG financed the project.

For the Swedish steel companies SSAB and Outokumpu producing special steels, it is very important to be able to control the cooling process in order to produce steel bars with excellent properties. Both steel companies also want to be able to control the cooling process so that the excellent steel properties become even over the bars’ spatial configuration.

The aim of the present project is to reveal the spatial-temporal behavior of a newly developed cooling technology in order to produce steel bars with excellent properties and to control the phase transformation to achieve optimal performance of the steel bars.

By using the special test rig at the UoG, detail temperature measurement mapping, invers solution and direct numerical simulation, the present project has identified and quantified several important aspects related to the quenching process, operating conditions, and temperature field development within the investigated products. The result from the proposed cooling process provides an outstanding cooling rate that is very crucial to obtain the required steel phase and thus the correct properties of the bar with different sizes. Results from this study have also shown that the cost per kg product can be reduced by tunning the process parameters such as soaking time and bar temperature before starting the cooling process.

In addition, both experimental and numerical results of the material investigation show that the cooling technology has resulted in the desired phase transformation and subsequently the desired steel phases and material properties. The results show that the cooling technology and the control of the cooling parameters can be used to optimize the material properties of the bar materials.

These good results and conclusions have been obtained via the deep collaboration between the SSAB, Outokumpu and UoG. The co-production, starting in the steering group planning the work along with the combination of research conducted at UoG and at the companies, have led to a successful project with great knowledge transfer in all direction during the duration of the project.

Place, publisher, year, edition, pages
Gävle: Gävle University Press , 2023. , p. 19
Series
Working paper, ISSN 1403-8757 ; 63
Keywords [en]
Thermal management, Advanced cooling, Material characterization, Material modelling
National Category
Materials Engineering
Identifiers
URN: urn:nbn:se:hig:diva-40922OAI: oai:DiVA.org:hig-40922DiVA, id: diva2:1738840
Projects
Effect of spatial-temporal behavior of a newly developed cooling system on carbon and stainless steel bar properties
Funder
Knowledge Foundation
Note

Funding: The Knowledge Foundation, SSAB, Outokumpu and University of Gävle

Available from: 2023-02-23 Created: 2023-02-23 Last updated: 2025-01-20Bibliographically approved

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Gebeyaw, Getiye WodajeRomanov, PavelJahedi, MohammadCalmunger, MattiasMoshfegh, Bahram

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