Design of magnetic fields for half and full type electromagnetic swirl flow generators
2015 (English)In: Steel Research International, ISSN 1611-3683, E-ISSN 1869-344X, Vol. 86, no 4, 361-374 p.Article in journal (Refereed) Published
In this work, the placement of an electromagnetic swirl flow generator (EMSFG) around a submerged entry nozzle (SEN) was proposed as a method for generating a rotating electromagnetic field in a continuous casting (CC) process of steel. First, two kinds of a full type EMSFG and a half type EMSFG were designed based on mathematical modeling. Then, distributions of magnetic flux intensity in an EMSFG as well as distributions of Lorentz force in molten steel were simulated. It was found that the EMSFG structure and electromagnetic parameters have an important effect on magnetic flux intensity and Lorentz force distributions. For both a full type and a half type EMSFG, the magnetic flux intensity and Lorentz force increases as the magnetomotive force increases. Especially, for a full type EMSFG, the magnetic flux intensity is distributed evenly in molten steel. Moreover, the Lorentz force increases along a radial direction in the molten steel in the SEN. However, for a half type EMSFG, the magnetic flux intensity and Lorentz force decreases gradually towards the region without an EMSFG. Consequently, a full type EMSFG with a 44 000 AT magnetomotive force and a 50 Hz frequency is more suitable to apply in the operation of an EMSFG under actual production conditions.
Place, publisher, year, edition, pages
John Wiley & Sons, 2015. Vol. 86, no 4, 361-374 p.
rotating magnetic field, electromagnetic swirl flow generator, full type, half type
Metallurgy and Metallic Materials
IdentifiersURN: urn:nbn:se:kth:diva-143900DOI: 10.1002/srin.201300463ISI: 000352712300004ScopusID: 2-s2.0-84926627883OAI: oai:DiVA.org:kth-143900DiVA: diva2:709486
QC 20150511. Updated from manuscript to article in journal.2014-04-022014-04-022016-01-04Bibliographically approved