Blar i NTNU Open på forfatter "Engh, Thorvald Abel"

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    • Coalescence of Clean, Coated, and Decoated Aluminum for Various Salts, and Salt–Scrap Ratios 

      Capuzzi, Stefano; Kvithyld, Anne; Timelli, Giulio; Nordmark, Arne; Gumbmann, Eva Maria; Engh, Thorvald Abel (Journal article, 2018)
      In a rotary furnace for aluminum recycling and dross treatment, a salt flux covers the molten metal to prevent new oxidation and to capture oxides, and impurities contained in the scrap. Furthermore, the salt must promote ...

    • Discussion of bi-film index and LiMCA data in industrial aluminum remelting trials 

      Kvithyld, Anne; Sæter, Jan Anders; Syvertsen, Martin; Fossheim, Harry; Nordmark, Arne; Sottar, Ronny; Engh, Thorvald Abel (Journal article; Peer reviewed, 2018)
      The trend in the aluminum high end market is to set unrealistic quality requirements e.g. inclusion free metal. The importance of quality and the ability to measure is growing. LiMCA is a unique, well-established tool for ...

    • Furnace Atmosphere and Dissolved Hydrogen in Aluminium 

      Syvertsen, Martin; Kvithyld, Anne; Gundersen, Eilif; Johansen, Inge; Engh, Thorvald Abel (Peer reviewed; Journal article, 2019)
      Hydrogen solubility is much higher in liquid than in solid aluminium. Therefore, if the hydrogen concentration in liquid aluminium is too high prior to solidification, there is high risk of gas porosity formation during ...

    • Solar silicon refining; Inclusions, settling, filtration, wetting 

      Ciftja, Arjan (Doktoravhandlinger ved NTNU, 1503-8181; 2009:103, Doctoral thesis, 2009)
      The main objective of the present work is the removal of inclusions from silicon scrap and metallurgical grade silicon. To reach this goal, two various routes are investigated. First, settling of SiC particles from molten ...

    • Vacuum evaporation of pure metals 

      Safarian, Jafar; Engh, Thorvald Abel (Journal article; Peer reviewed, 2013)
      Theories on the evaporation of pure substances are reviewed and applied to study vacuum evaporation of pure metals. It is shown that there is good agreement between different theories for weak evaporation, whereas there ...