The Concept of the Liquid Sampling and Hot Rolling Method for Determination of Macro Inclusion Characteristics in Steel

A novel method for determination of semi‐macro and macro size distributions of inclusions in steel from samples in ladle, tundish and mould has been developed. The samples are worked and surface treated before inspection. Mainly immersed ultrasonic scanning is performed to determine the semi‐macro a...

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Veröffentlicht in:	Steel research international 2006-03, Vol.77 (3), p.177-185
Hauptverfasser:	Hansén, Thorbjörn, Jönsson, Pär, Lundberg, Sven‐Erik, Törresvoll, Ketil
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied sciences Engineering physics Exact sciences and technology Hot rolling Inclusions Information analysis Inspection Iron and steel making Iron and steel plants Ladle metallurgy Liquid sampling Liquids Macro inclusion Maskinteknik Material physics with surface physics Materialfysik med ytfysik Mechanical engineering Metallurgy Metals. Metallurgy Molds Other technology Sampling Steel Steel cleanness Steelmaking Steels TECHNOLOGY TEKNIKVETENSKAP Teknisk fysik Tundish Tundishes Övriga teknikvetenskaper
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Beschreibung
Zusammenfassung:	A novel method for determination of semi‐macro and macro size distributions of inclusions in steel from samples in ladle, tundish and mould has been developed. The samples are worked and surface treated before inspection. Mainly immersed ultrasonic scanning is performed to determine the semi‐macro and macro inclusion content. The LSHR method has been tested in several different steel plants and for different steel grades. It is concluded that new information regarding large inclusions during steelmaking can be obtained using the method.
ISSN:	1611-3683 1869-344X 1869-344X
DOI:	10.1002/srin.200606372