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Effect of casting parameters on the formation of oscillation marks during continuous casting
KTH, Skolan för industriell teknik och management (ITM), Materialvetenskap, Metallernas gjutning.ORCID-id: 0000-0001-9437-3550
KTH, Skolan för industriell teknik och management (ITM), Materialvetenskap, Metallernas gjutning.ORCID-id: 0000-0002-8318-1251
KTH, Skolan för industriell teknik och management (ITM), Materialvetenskap, Metallernas gjutning.ORCID-id: 0000-0003-2449-9232
(engelsk)Manuskript (preprint) (Annet vitenskapelig)
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.

HSV kategori
Forskningsprogram
Teknisk materialvetenskap
Identifikatorer
URN: urn:nbn:se:kth:diva-187870OAI: oai:DiVA.org:kth-187870DiVA, id: diva2:931691
Forskningsfinansiär
Swedish Energy Agency
Merknad

QC 20160608

Tilgjengelig fra: 2016-05-30 Laget: 2016-05-30 Sist oppdatert: 2016-06-08bibliografisk kontrollert
Inngår i avhandling
1. On the surface quality of continuously cast steels and phosphor bronzes
Åpne denne publikasjonen i ny fane eller vindu >>On the surface quality of continuously cast steels and phosphor bronzes
2016 (engelsk)Doktoravhandling, med artikler (Annet vitenskapelig)
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.

sted, utgiver, år, opplag, sider
Stockholm: KTH Royal Institute of Technology, 2016. s. 80
Emneord
Continuous Casting, Steels, Ni-based alloy, Peritectic, Phosphor Bronzes, Simulation and Modeling
HSV kategori
Forskningsprogram
Teknisk materialvetenskap; Industriell ekonomi och organisation; Metallurgisk processvetenskap
Identifikatorer
urn:nbn:se:kth:diva-187718 (URN)978-91-7729-019-3 (ISBN)
Disputas
2016-06-09, Kollegiesalen, Brinellvägen 8, SE-10044, KTH-Campus, Stockholm, 14:00 (engelsk)
Opponent
Veileder
Prosjekter
Oscilation mark formation during continous casting of steel
Forskningsfinansiär
Swedish Energy AgencyVINNOVAHelge Ax:son Johnsons stiftelse
Merknad

QC 20160527

Tilgjengelig fra: 2016-05-30 Laget: 2016-05-27 Sist oppdatert: 2016-05-30bibliografisk kontrollert

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