Search for dissertations about: "Ladle treatment"

Showing result 11 - 15 of 31 swedish dissertations containing the words Ladle treatment.

  2. 11. Mass transfer and slag-metal reaction in ladle refining : a CFD approach

    Author : Eva Ramström; Du Sichen; Mselly Nozotta; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; reoxidation; desulphurisation; CFD; ladle treatment; model; Other materials science; Övrig teknisk materialvetenskap;

    Abstract :   In order to optimise the ladle treatment mass transfer modelling of aluminium addition and homogenisation time was carried out. It was stressed that incorporating slag-metal reactions into the mass transfer modelling strongly would enhance the reliability and amount of information to be analyzed from the CFD calculations. READ MORE

  4. 12. Some aspects of oxygen and sulphur reactions towards clean steel production

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

    Abstract : .... READ MORE

  5. 13. A model for multicomponent reactions between metal/slag using thermo-calc : applied for removal of sulphur during ladle treatment

    Author : Anna Boström; KTH; []
    Keywords : ;

    Abstract : .... READ MORE

  6. 14. Influence of Stirring on the Inclusion Characteristics during Vacuum Degassing in a Ladle

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

    Abstract : 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). READ MORE

  7. 15. Study of Non-metallic Inclusion in Alloy 825

    Author : Hans Kellner; Andrey Karasev; Pär Jönsson; Guozhu Ye; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Alloy 825; FeTi70R alloy; non-metallic inclusions; inclusion distribution; clusters; electromagnetic and gas stirring; ladle treatment; electrolytic extraction; stirring directions; Alloy 825; FeTi70R legering; icke-metalliska inneslutningar; inneslutnings fördelning; kluster; elektromagnetisk och gas omrörning; skänkugnsbehandling; elektrolytisk extraktion; omrörningshåll; Metallurgical process science; Metallurgisk processvetenskap; Steel Forming and Surface Engineering;

    Abstract : It is well known that inclusions affect the properties of steels and alloys. Therefore, it is important to understand what type of inclusions that exist and how they behave and especially with a focus on large size inclusions. READ MORE