Sökning: "gas-stirring"

Visar resultat 1 - 5 av 8 avhandlingar innehållade ordet gas-stirring.

  1. 1. Study of the slag-metal interaction in ladle treatment

    Författare :Pranesh Dayal; Du Sichen; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Materials science; slag-metal; mixing; interface; induction stirring; gas stirring; ladle treatment; Materialvetenskap; Materials science; Teknisk materialvetenskap;

    Sammanfattning : .... LÄS MER

  3. 2. Growth and Removal of Inclusions During Ladle Stirring

    Författare :Mats Söder; KTH; []
    Nyckelord :inclusions; ladle; gas-stirring; induction-stirring; secondary refining; bubble flotation;

    Sammanfattning : The growth and removal of inclusions in stirred ladles hasbeen studied. First, the importance of different growthmechanisms suggested in the literature were studied. Simulationresults from a fundamental model of an induction-stirred ladlehave been used as input in the calculations. LÄS MER

  4. 3. Study of Non-metallic Inclusion in Alloy 825

    Författare :Hans Kellner; Andrey Karasev; Pär Jönsson; Guozhu Ye; KTH; []
    Nyckelord :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;

    Sammanfattning : 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. LÄS MER

  5. 4. Formation of Inclusions and their Development during Secondary Steelmaking

    Författare :Mikael Thunman; Du Sichen; Piotr Scheller; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Metallurgical manufacturing engineering; Metallurgisk produktionsteknik;

    Sammanfattning : Al–O relations in iron were investigated. Pure iron with varying Al content was equilibrated at 1873 K. The oxygen content of iron with higher Al content than 1.0 mass % was found to be much lower than previous works, while the oxygen content for Al content less than 1 mass% was found to be slightly higher. LÄS MER

  7. 5. Mathematical modeling of selected ladle operations

    Författare :Lage Jonsson; KTH; []
    Nyckelord :TECHNOLOGY; TEKNIKVETENSKAP;

    Sammanfattning : The traditional approach to modeling ladle processes involvea critical survey of the thermodynamic aspects of the processincluding mass and heat balantes at the macroscopic level. Onthe other hand, the macrokinetics, specific to the reactor haveoften been studied separately, using computational fluiddynamits. LÄS MER