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Effect of casting parameters on the formation of oscillation marks during continuous casting
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Casting of Metals.ORCID iD: 0000-0001-9437-3550
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Casting of Metals.ORCID iD: 0000-0002-8318-1251
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Casting of Metals.ORCID iD: 0000-0003-2449-9232
(English)Manuscript (preprint) (Other academic)
Abstract [en]

In the present investigation, oscillations marks formed at the surfaces of two different steel grades are studied; this includes metallographic investigation. The characteristics of the marks are examined rigorously, and the analysis is performed serially. The statistical data is compared withanalytical relations and possible reasons for the deviations from the average values are discussed.From the ongoing analysis, it can be seen that the formation of the primary shell is an important parameter which can affect the depth of the depression. Moreover, the results show that theformation of the oscillation marks is a complex phenomenon and that there could be more than one explanation for their formation.

National Category
Metallurgy and Metallic Materials
Research subject
Materials Science and Engineering
Identifiers
URN: urn:nbn:se:kth:diva-187870OAI: oai:DiVA.org:kth-187870DiVA: diva2:931691
Funder
Swedish Energy Agency
Note

QC 20160608

Available from: 2016-05-30 Created: 2016-05-30 Last updated: 2016-06-08Bibliographically approved
In thesis
1. On the surface quality of continuously cast steels and phosphor bronzes
Open this publication in new window or tab >>On the surface quality of continuously cast steels and phosphor bronzes
2016 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

This thesis work concerns about the importance of the cast surfaces, surface phenomenon such as the formation of the oscillation marks and exudation and related defects including cracks and segregation that happened during the continuous casting. All of the investigated materials were collected during the plant trials while an in-depth analysis on these materials was performed at the laboratory scale with certain explanations supported by the schematic and theoretical models. The work consists on different material classes such as steels and phosphor bronzes with a focus on the surface defects and their improvements. In order to facilitate the theoretical analysis which could be capable of explaining the suggested phenomenon in the thesis, a reduced model is developed which required lesser computational resources with lesser convergence problems.

Place, publisher, year, edition, pages
Stockholm: KTH Royal Institute of Technology, 2016. 80 p.
Keyword
Continuous Casting, Steels, Ni-based alloy, Peritectic, Phosphor Bronzes, Simulation and Modeling
National Category
Metallurgy and Metallic Materials
Research subject
Materials Science and Engineering; Industrial Engineering and Management; Metallurgical process science
Identifiers
urn:nbn:se:kth:diva-187718 (URN)978-91-7729-019-3 (ISBN)
Public defence
2016-06-09, Kollegiesalen, Brinellvägen 8, SE-10044, KTH-Campus, Stockholm, 14:00 (English)
Opponent
Supervisors
Projects
Oscilation mark formation during continous casting of steel
Funder
Swedish Energy AgencyVINNOVAHelge Ax:son Johnsons stiftelse
Note

QC 20160527

Available from: 2016-05-30 Created: 2016-05-27 Last updated: 2016-05-30Bibliographically approved

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Saleem, SaudVynnycky, MichaelFredriksson, Hasse
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