Search for dissertations about: "slag LADLE REACTIONS"

Showing result 1 - 5 of 15 swedish dissertations containing the words slag LADLE REACTIONS.

  2. 1. The Effect of Ladle Treatment on Steel Cleanness in Tool Steels

    Author : Karin Steneholm; Pär Jönsson; Guozhu Ye; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; oxygen activity; inclusion characteristics; vacuum degassing; desulphurization; slag; ladle; hydrogen; nitrogen; deslagging; Teknisk materialvetenskap; Materials Science and Engineering;

    Abstract : The aim of the present work was to get an overview of the steel cleanness in tool steel. Plant trial studies of three steel grades were done with different focuses.Firstly the change of the inclusion characteristics during the vacuum degassing in the ladle was looked upon. READ MORE

  4. 2. 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. 3. Formation of oxide-inclusions by ladle glaze and a preliminary examination on the possibility of inclusion seperation by bubble floatation

    Author : Nagendra Tripathi; KTH; []
    Keywords : oxide inclusions; ladle metallurgy; ladle glaze; inclusion population; ladle age;

    Abstract : The present work was to study the role of ladle glaze as apotential supplier of inclusions to the steel melt during theladle refining process. In this study, the total number ofinclusions at the beginning and at the end of the ladletreatment process was found to be increasing with ladle age,which is the number of heats, the ladle being used. READ MORE

  6. 4. A study on molten steel/slag/refractory reactions during ladle steel refining

    Author : Sune Jansson; Voicu Brabie; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Materials science; reoxidation; aluminium killed steel; inclusions; refractory; molten slag; corrosion rate; Materialvetenskap; Materials science; Teknisk materialvetenskap;

    Abstract : .... READ MORE

  7. 5. 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