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A New Tundish Design to Produce a Swirling Flow in the SEN During Continuous Casting of Steel
KTH, Skolan för bioteknologi (BIO), Proteomik och nanobioteknologi.ORCID-id: 0000-0002-4657-8532
KTH, Skolan för industriell teknik och management (ITM), Materialvetenskap.
KTH, Skolan för industriell teknik och management (ITM), Materialvetenskap.
2016 (engelsk)Inngår i: Steel Research International, ISSN 1611-3683, E-ISSN 1869-344XArtikkel i tidsskrift (Fagfellevurdert) Published
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Text
Abstract [en]

A new tundish is designed with the aim to produce a swirling flow in a tundish SEN by an economical way of using the steel flow potential as the required power. This design is easily obtained by adding a cylindrical part of the tundish onto a traditional tundish. The results show that a swirling flow in the SEN of the new tundish is successfully obtained, also, that the tangential velocity in the SEN can reach around 1.6ms-1. The installation of weirs in the cylindrical tundish can contribute to stabilize the steel flow at the top of the tundish. However, this reduces the swirling flow intensity in the SEN around 30%. In addition, the possibility of slag entrainment at the top of the tundish is analyzed. The calculated Weber Number is around 5.0 for no weir case and 2.8 for the weir case, which means that the risk of slag entrainment is small. A high value of shear stress is found on the SEN wall due to the swirling flow in SEN. A further investigation shows that a smooth transition of SEN inlet can reduce the maximum shear stress level in the SEN, without decreasing the swirling flow intensity.

sted, utgiver, år, opplag, sider
Wiley-VCH Verlagsgesellschaft, 2016.
Emneord [en]
Continuous casting, Slag entrainment, Steel flow, Swirling flow SEN, Tundish, Hydraulic structures, Shear flow, Shear stress, Slags, Swirling flow, Weirs, Continuous casting of steels, Flow intensity, Maximum shear stress, Smooth transitions, Tangential velocities, Steel castings
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Identifikatorer
URN: urn:nbn:se:kth:diva-186755DOI: 10.1002/srin.201500407ISI: 000387017200012Scopus ID: 2-s2.0-84963623685OAI: oai:DiVA.org:kth-186755DiVA: diva2:932517
Merknad

QC 20160601

Tilgjengelig fra: 2016-06-01 Laget: 2016-05-13 Sist oppdatert: 2016-11-29bibliografisk kontrollert

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