Sökning: "ladle"

Visar resultat 16 - 20 av 67 avhandlingar innehållade ordet ladle.

  1. 16. A Mathematical and Experimental Study of Inclusion Behaviour at a Steel-Slag Interface

    Författare :Jenny Wikström; Pär Jönsson; Lauri Holappa; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; mathematical modeling; inclusion separation; tundish; ladle; slag; steel-slag interface; CSLM experiments; agglomeration; physical properties; Metallurgical process and manufacturing engineering; Metallurgisk process- och produktionsteknik;

    Sammanfattning : The aim of this thesis work is to increase the knowledge of inclusion behavior at the steel-slag interface by mathematical modeling and in-situ Confocal Scanning Laser Microscope experiments. Mathematical models based on the equation of motion predicting liquid and solid inclusion behavior was first investigated. LÄS MER

  3. 17. Some aspects of oxygen and sulphur reactions towards clean steel production

    Författare :Margareta Andersson; KTH; []
    Nyckelord :ladle treatment; ladle slag; reoxidation; desulphurisation; sulphide capacity; sulphur distribution; CFD modelling; nozzle clogging; inclusion modification;

    Sammanfattning : .... LÄS MER

  4. 18. Formation and Chemical Development of Non-metallic Inclusions in Ladle Treatment of Steel

    Författare :Kristina Beskow; KTH; []
    Nyckelord :Metallurgy; Steel making; Ladle Treatment; Inclusion chemistry;

    Sammanfattning : The present study was carried out to investigate theformation and chemical development of non-metallic inclusionsduring ladle treatment of steel.To begin with, an investigation of the deoxidation processand the impact of aluminium addition was carried out. For thispurpose, a new experimental setup was constructed. LÄS MER

  5. 19. Influence of Stirring on the Inclusion Characteristics during Vacuum Degassing in a Ladle

    Författare :Charlotte Médioni; Pär Jönsson; Robert Eriksson; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Vacuum degassing treatment; inclusions; ladle eye; stirring intensity; denitrogenization; desulphurization.;

    Sammanfattning : Steel cleanliness as a function of stirring practice during vacuum degassing treatment have been investigated in industrial studies at the steel plants of SSAB Special Steels in Oxelösund and Uddeholm AB in Hagfors. The cleanliness was examined with regards to the contents of sulphur, nitrogen and large inclusions (>10µm). LÄS MER

  7. 20. Numerical Study on Steel Flow and Inclusion Behavior during a Ladle Teeming Process

    Författare :Peiyuan Ni; Pär Jönsson; Lage Jonsson; Mikael Ersson; Jonas Alexis; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; steel flow; ladle teeming; numerical simulation; inclusion behavior; CFD; clogging; deposition.;

    Sammanfattning : Inclusions in molten steel have received worldwide concern due to their serious influence on both the steel product quality and the steel production process. These inclusions may come from the deoxidation process, reoxidation by air and/or slag due to an entrainment during steel transfer, and so on. LÄS MER