publication . Doctoral thesis . 2010

Formation of non-metallic inclusions and the possibility of their removal during ingot casting

Ragnarsson, Lars;
Open Access English
  • Published: 01 Jan 2010
  • Publisher: KTH, Mikro-modellering
  • Country: Sweden
Abstract
The present study was carried out to investigate the formation and evolution of non-metallic inclusions during ingot casting. Emphasize have been on understanding the types of inclusions formed and developed through the casting process and on the development of already existing inclusions carried over from the ladle during casting. Industrial experiments carried on at Uddeholm Tooling together with laboratory work and Computational Fluid Dynamics (CFD) simulations. Ingots of 5.8 tons have been sampled and the types of inclusions together with their distribution within the ingot have been characterized. Two new types of inclusions have been found. Type C1 is foun...
Subjects
free text keywords: Ingot casting, tool steel, inclusion, runner, refractory, erosion, casting powder, cold model, argon shroud, reoxidation, oxygen measurement, CFD, PIV, Metallurgical process engineering, Metallurgisk processteknik
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