Search for dissertations about: "Steel making"

Showing result 1 - 5 of 91 swedish dissertations containing the words Steel making.

  2. 1. Fatigue of existing steel bridges : Reliability and risk analyses for decision-making

    Author : Ruoqi Wang; John Leander; Raid Karoumi; Boulent Imam; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Fatigue; steel bridges; decision-making; reliability analysis; risk analysis; spatial correlation; system modelling; inspection and maintenance; Utmattning; stålbroar; beslutsfattande; tillförlitlighet; riskanalys; rumslig korrelation; systemmodellering; inspektion och underhåll; Bro- och stålbyggnad; Structural Engineering and Bridges;

    Abstract : Fatigue is one of the primary reasons that limit the service life of steel bridges. Many bridges in Sweden and other countries have progressively approached their anticipated service lives. Since funding and resources are limited, simultaneously replacement or maintenance of bridges is impractical. READ MORE

  4. 2. Steel Beyond Coal : Socio-Technical Change and the Emergent Politics of Steel Decarbonisation

    Author : Valentin Vogl; Miljö- och energisystem; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Steel; coal; climate change; decarbonisation; socio-technical transitions; sustainability;

    Abstract : The steel industry is responsible for 8% of all anthropogenic greenhouse gas emissions and is the second largest user of coal after the power sector. The main emission source in steel production is the blast furnace, which converts iron ore and metallurgical coal into pig iron that is then further refined into steel. READ MORE

  5. 3. Steel Making Hunter-Gatherers in Ancient Arctic Europe

    Author : Carina Bennerhag; Kristina Söderholm; Eva Hjärthner-Holdar; Sara Hagström Yamamoto; Roine Wiklund; Marianne Skandfer; Luleå tekniska universitet; []
    Keywords : HUMANIORA; HUMANITIES; Iron Metallurgy; Archaeometallurgy; Ancient Steel; Arctic Europe; Hunter-Gatherers; Landscape; Climate; Taskscape; Historia; History;

    Abstract : Based on findings made by Norrbotten County Museum around 2010 in the vicinity of Sangis in Arctic Sweden of advanced iron and steel production in a hunter-gatherer setting dated to the pre-Roman Iron Age (c. 200-50 BC), the aim of the present thesis is twofold. READ MORE

  6. 4. A Study on Structural Cores for Lightweight Steel Sandwiches

    Author : Samuel Hammarberg; Pär Jonsén; Daniel Berglund; Luleå tekniska universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Lightweight; Sandwich; Steel; Energy absorption; Homogenization; Finite element; Hållfasthetslära; Solid Mechanics;

    Abstract : Lightweight materials and structures are essential building blocks for a future with sustainable transportation and automotive industries. Incorporating lightweight materials and structures in today's vehicles, reduces weight and energy consumption while maintaining, or even improving, necessary mechanical properties and behaviors. READ MORE

  7. 5. Formation and Chemical Development of Non-metallic Inclusions in Ladle Treatment of Steel

    Author : Kristina Beskow; KTH; []
    Keywords : Metallurgy; Steel making; Ladle Treatment; Inclusion chemistry;

    Abstract : 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. READ MORE