Sökning: "casting defects"

Visar resultat 1 - 5 av 46 avhandlingar innehållade orden casting defects.

  1. 1. Characteristics of cast magnesium alloys : microstructures, defects and mechanical properties

    Författare :Haiping Cao; Anders Jarfors; Linköpings universitet; []
    Nyckelord :Mg alloys; microstructure; mechanical properties; defects; modelling; segregation bands; hot tear; mould constraint; semi-solid casting.; TECHNOLOGY; TEKNIKVETENSKAP;

    Sammanfattning : Magnesium is the lightest of all structural metals. As such, and combined  with good mechanical and physical properties, it forms the basis for commercial alloys that have found successful use in a wide variety of applications. LÄS MER

  3. 2. The double axe in Minoan Crete : a functional analysis of production and use

    Författare :Maria Lowe Fri; Charlotte Scheffer; Lena Sjögren; Doniert Evely; Stockholms universitet; []
    Nyckelord :HUMANIORA; HUMANITIES; Bronze Age Crete; Minoan period; double axe; casting; casting defects; finishing treatment; experimental archaeology; use-wear; use; user; Archaeology; classical; Arkeologi; klassisk; antikens kultur och samhällsliv; Classical Archaeology and Ancient History;

    Sammanfattning : This study examines the production and use of Minoan double axes with the aim of finding out what working activities they were used for. The double axe has earlier been associated with a woodworker, a carpenter, a stonemason and a butcher. LÄS MER

  4. 3. A Study of the Initial Mould Filling during Up-hill Ingot Casting

    Författare :Line Hallgren; Pär Jönsson; Anders Tilliander; Seppo Louhenkilpi; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; swirling flow; up-hill teeming; nozzle; casting; fluid flow; modelling; CFD; LDA; swirl; ingot casting; filling; red eye;

    Sammanfattning : The fluid flow in the mould during up-hill teeming is of great importance for the quality of the cast ingot and thereby the quality of the final steel products. At the early stage of the filling of an up-hill teeming mould, liquid steel flows with a high velocity from the runner into the mould. LÄS MER

  5. 4. Understanding surface defects on direct chill cast 6xxx aluminium billets

    Författare :Mikael Erdegren; Torbjörn Carlberg; Mittuniversitetet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Aluminium; billets; DC casting; segregation; surface defects; vertical drags; Bridgman furnace; dewetting; non-wettable; nanocomp; Metcast ST20; graphite ring; titanium-butoxide;

    Sammanfattning : .... LÄS MER

  7. 5. Cracking during Continuous Casting of Steels : Analysis tools and procedures to identify their causes on microalloyed steel slabs

    Författare :Rosa Maria Pineda Huitron; Esa Vuorinen; Pavel Ernesto Ramí­rez López; Maria Begoña Santillana; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Transverse corner cracks; Continuous Casting; Microalloyes steels; Secondary cooling; Cooling curves; Crack susceptibility; Materialteknik; Engineering Materials;

    Sammanfattning : Transverse corner cracks are one of the most common but complex defects formed in microalloyed steels during continuous casting (CC). Such cracks are detrimental because it leads to a loss in productivity with a great impact on environment, energy and economics for several steel making companies all over the world. LÄS MER