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Industrial Application of Numerical Modelling, Microstructural Characterization and Plant Monitoring for Prevention and Elimination of Defects during Continuous Casting of Steel
2015 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

Continuous casting is the most efficient and cost effective method to produce metals and alloys. However, surface defects such as cracks are highly detrimental to productivity. Consequently, an accurate description of the defects formation mechanisms is of great interest to Scandinavian steelmakers. A major Scandinavian steelmaker is experiencing problems with transverse corner cracks in slabs which often appear during/after casting. Those cracks are difficult to detect since they may be covered with scale or appear in the slab’s sub-surface. As a result, these defects have to be removed by scarfing and grinding the slabs. Moreover, if not detected, these cracks may even appear in the plate surface, which must be rejected resulting in a loss of yield and energy. The approach in this project is to eliminate and prevent transverse corner cracks on HSLA steels during casting by using a multi-disciplinary approach including plant monitoring, microstructural analysis and numerical modelling. The combination of these techniques allowed the formulation of different casting strategies would minimize the cracking issues. Some of these strategies were tested in the plant with a perceptible improvement on slab quality. 

Place, publisher, year, edition, pages
2015. , p. 66
Keywords [en]
Technology
Keywords [sv]
Teknik
Identifiers
URN: urn:nbn:se:ltu:diva-48222Local ID: 5b17bb68-4451-4d0d-95ea-5e9d017038e6OAI: oai:DiVA.org:ltu-48222DiVA, id: diva2:1021562
External cooperation
Subject / course
Student thesis, at least 30 credits
Educational program
Materials Engineering, master's level
Examiners
Note
Validerat; 20151016 (global_studentproject_submitter)Available from: 2016-10-04 Created: 2016-10-04Bibliographically approved

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CiteExportLink to record
Permanent link

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Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf