Search for dissertations about: "ssab"

Showing result 1 - 5 of 21 swedish dissertations containing the word ssab.

  2. 1. Hardening of Carbon Steel by Water Impinging Jet Quenching Technique : Differential Cooling of Steel Sheets and Quenching of Cylindrical Bars

    Author : Pavel Romanov; Mattias Calmunger; Bahram Moshfegh; Viktor Norman; Ru Peng; Peter Hedström; Linköpings universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Differential cooling; Impinging jet quenching; Microstructure gradient; Hardening;

    Abstract : Austenitization followed by quenching is a well-known conventional heat-treating procedure which is widely used on carbon steels with the aim to obtain high strength in as-quenched condition. Such quenching is usually done by immersing a steel product into the cooling medium which provides a uniform cooling of the surface. READ MORE

  4. 2. Multivariable control of a pneumatic conveying system

    Author : Wolfgang Birk; Luleå tekniska universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Reglerteknik; Control Engineering;

    Abstract : This licentiate thesis deals with a multivariable controller of a pneumatic conveying system. The industrial process used to illustrate design, analysis and implementation of a multivariable controller is the injection of fine coal into a blast furnace. READ MORE

  5. 3. Model-based leakage detection in a pressurized system

    Author : Andreas Johansson; Luleå tekniska universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Reglerteknik; Control Engineering;

    Abstract : Fault detection and isolation is a potentially powerful tool for achieving security and effective maintenance in various types of processes. The motivation for performing leakage detection in the coal injection plant is mainly the inflammability of pulverized coal. A leakage of air into an injection vessel could have catastrophic consequences. READ MORE

  6. 4. Adaptations of Products to Customers' Use Contexts

    Author : Fredrik Skarp; Chalmers tekniska högskola; []
    Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; resources; relationship; product development; adaptations; steel industry;

    Abstract : This thesis deals with a suppliers efforts to make customers in industrial markets use new products where the supplier and customer have no previous business exchange. It takes a supplier perspective and studies products with more advanced features that compared to those currently used offer new opportunities for the customer. READ MORE

  7. 5. Modeling the microstructural evolution during hot working of C-Mn and of Nb microalloyed steels using a physically based model

    Author : Linda Lissel; []
    Keywords : austenite; modeling; hot deformation; microstructure; evolution; static recrystallization; dynamic recrystallization; metadynamic recrystallization; Modellering av mikrostrukturutvecklingen hos mikrolegerade stål under varmdeformation;

    Abstract : Recrystallization kinetics, during and after hot deformation, has been investigated for decades. From these investigations several equations have been derived for describing it. The equations are often empirical or semi-empirical, i.e. READ MORE