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Found 4 swedish dissertations matching the above criteria.

  2. 1. Heat transfer phenomena and mould flux lubrication in continuous casting of steel

    Author : Akira Yamauchi; KTH; []
    Keywords : Heat Transfer; Thermal Conductivity; Contact Resistance; Mould Flux; Solidification; Lubrication; Infiltration; Friction; Shear Stress; Modeling; Crystallization; Rupture Strength; Solidus; High-Speed Casting; Viscosity; Elasticity; Uniform Cooling;

    Abstract : Overall thermal resistance of the mould flux was measured tomake clear the influence of the mould flux properties on theheat transfer behavior in continuous casting, especiallythermal conductivity and the formation of air gaps in thisstudy. From the investigation of the effect of the mouldsurface temperature and physical properties of the mould fluxon heat transfer through the flux film, following knowledge hasbeen obtained. READ MORE

  4. 2. Mechanical properties and microstructure of laser sintered and starch consolidated iron-based powders

    Author : Yu Wang; Jens Bergström; Karlstads universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Powder metallurgy; Laser sintering; Microstructure; Fatigue; Thermal fatigue; Wear; Starch consolidation; Rapid forming; Net shaping; Liquid phase sintering; Nitriding; High speed steels; Materials science; Teknisk materialvetenskap; Materialteknik; Materials Engineering;

    Abstract : In powder metallurgy research field, Direct Metal Laser Sintering (DMLS) and Metal Powder Starch Consolidation (MPSC) are relatively new rapid forming techniques to fabricate complex and near net-shaped components. The working principles of DMLS are to melt and fuse metal powder layer by layer in computer controlled systems to pile up components like three dimensional printing. READ MORE

  5. 3. Optimization product parts in high pressure die casting process

    Author : Mohammad Sadeghi; Rebei Bel-fdhila; Dan Loyd; Mälardalens högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; industriell ekonomi och organisation; Industrial Economics and Organisations;

    Abstract : This thesis describes optimization of die temperature in high pressure die-casting (HPDC) of A380 alloy by experimental observation and numerical simulation with the use of statistical tools. The goal of this research is to determine the optimum die temperature to minimize incidence of these defects and thus maximize production of parts without defects. READ MORE

  6. 4. REMAP-γ: A Scalable SIMD VLSI Architecture with Hierarchical Control

    Author : Lars Bengtsson; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; array signal processing; hierarchical control; SIMD; VLSI architectures; distributed synchronous clocking; embedded supercomputing;

    Abstract : While the clock speed of general purpose (uni-)processors has risen dramatically during recent years, this is not true for SIMD (Single Instruction stream Multiple Data streams) parallel processors. The reason is to be found in the structure of this type of architecture: long-range broadcasting of data, clock and control signals. READ MORE