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Wyszukujesz frazę "Saternus, M." wg kryterium: Autor

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    Wyświetlanie 1-5 z 5
    Tytuł:
    The Influence of Parameters of Argon Purging Process Through Ladle on the Phenomena Occuring in the Area of Phase Distributions: Liquid Steal-Slag
    Autorzy:
    Pieprzyca, J.
    Merder, T.
    Saternus, M.
    Gryc, K.
    Socha, L.
    Powiązania:
    https://bibliotekanauki.pl/articles/356927.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    steelmaking
    ladle
    slag
    physical modelling
    Opis:
    Purging the liquid steel with inert gases is a commonly used treatment in secondary metallurgy. The main purposes for which this method is used are: homogenization of liquid steel in the entire volume of the ladle, improvement of mixing conditions, acceleration of the absorption process of alloy additives and refining of liquid steel from non-metallic inclusions. The basic processing parameters of this treatment are: gas flow rate and the level of gas dispersion in liquid steel. The level of gas dispersion depends on the design and location of the porous plug in the ladle. Therefore, these parameters have a significant impact on the phenomena occurring in the contact zone of liquid steel with slag. Their improper selection may cause secondary contamination of the bath with exogenous inclusions from the slag, or air atmosphere due to discontinuity of the slag and exposure of the excessive surface of the liquid steel free surface. The article presents the results of modelling research of the effect of liquid steel purging with inert gases on phenomena occurring in this zone. The research was carried out using the physical (water) model of steel ladle. As a modelling liquid representing slag, paraffin oil was used, taking into account the conditions of similarity with particular reference to the kinematic viscosity. The results of the conducted research were presented in the form of visualization of phenomena occurring on the surface of the model liquid free surface in the form of photographs. The work is a part of a bigger study concerning modelling of ladle processes.
    Źródło:
    Archives of Metallurgy and Materials; 2019, 64, 2; 653-658
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Evaluation of Approaches of Numerical Modelling of Solidification of Continuously Cast Steel Billets
    Autorzy:
    Tkadlečková, M.
    Michalek, K.
    Strouhalová, M.
    Sviželová, J.
    Saternus, M.
    Pieprzyca, J.
    Merder, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/354682.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    steel
    steelmaking
    continuous casting
    numerical modelling
    temperature field
    porosity
    Opis:
    The paper evaluates two approaches of numerical modelling of solidification of continuously cast steel billets by finite element method, namely by the numerical modelling under the Steady-State Thermal Conditions, and by the numerical modelling with the Traveling Boundary Conditions. In the paper, the 3D drawing of the geometry, the preparation of computational mesh, the definition of boundary conditions and also the definition of thermo-physical properties of materials in relation to the expected results are discussed. The effect of thermo-physical properties on the computation of central porosity in billet is also mentioned. In conclusion, the advantages and disadvantages of two described approaches are listed and the direction of the next research in the prediction of temperature field in continuously cast billets is also outlined.
    Źródło:
    Archives of Metallurgy and Materials; 2018, 63, 2; 1003-1008
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Physical Modelling of Tundish Slag Entrainment under Various Technological Conditions
    Autorzy:
    Michalek, K.
    Gryc, K.
    Socha, L.
    Tkadlečková, M.
    Saternus, M.
    Pieprzyca, J.
    Merder, T.
    Pindor, L.
    Powiązania:
    https://bibliotekanauki.pl/articles/351348.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    steelmaking
    tundish
    slag entrainment
    flow pattern
    physical modelling
    Opis:
    This paper deals with the issue of physical modelling of vortexes creation and tundish slag entrainment over the mouth of the nozzle into the individual casting strands. Proper physical model is equivalent to the operational continuous casting machine No. 2 in TŘINECKÉ ŽELEZÁRNY, a.s. Physical modelling methodology and simulated operational conditions are shortly described. Physical modelling was used for the evaluation of current conditions of steel casting at the application of different impact pads in the tundish. Further, laboratory measurement on the physical model aiming the determination of exact critical periods of vortexes creation and study of the slag entrainment as a consequence of changes in surface level during the tundish refilling to standard level were realised. The obtained results were analysed and discussed.
    Źródło:
    Archives of Metallurgy and Materials; 2017, 62, 3; 1467-1471
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Research and Development of the Solidification of Slab Ingots from Special Tool Steels
    Autorzy:
    Tkadlečková, M.
    Michalek, K.
    Gryc, K.
    Socha, L.
    Jonšta, P.
    Saternus, M.
    Pieprzyca, J.
    Merder, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/356096.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    tool steel
    steelmaking
    slab ingot
    numerical modelling
    porosity
    Opis:
    The paper describes the research and development of casting and solidification of slab ingots from special tool steels by means of numerical modelling using the finite element method. The pre-processing, processing and post-processing phases of numerical modelling are outlined. Also, problems with determining the thermophysical properties of materials and heat transfer between the individual parts of the casting system are discussed. Based on the type of grade of tool steel, the risk of final porosity is predicted. The results allowed to improve the production technology of slab ingots, and also to verify the ratio, the chamfer and the external/ internal shape of the wall of the new designed slab ingots.
    Źródło:
    Archives of Metallurgy and Materials; 2017, 62, 3; 1453-1458
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Study of Tundish Slag Entrainment Using Physical Modelling
    Autorzy:
    Michalek, K.
    Gryc, K.
    Socha, L.
    Saternus, M.
    Tkadlečková, M.
    Pieprzyca, J.
    Merder, T.
    Pindor, L.
    Powiązania:
    https://bibliotekanauki.pl/articles/353001.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    steelmaking
    tundish
    slag entrainment
    vortex
    physical modelling
    Opis:
    This paper deals with the possibilities of using physical modelling to study the slag entrainment in the tundish. A level of steel in the tundish is changing during sequential continuous casting. The most significant decrease in the steel level occurs when replacing ladles. It is generally known that if the height of steel level in the tundish drops below a certain critical level, it may generate vortexes over the nozzles and as a consequence entrainment of tundish slag into individual casting strands can occur. Thus, it is necessary to identify the critical level of steel for specific operational conditions. In this paper, the development of physical modelling methodology is described as well as physical model corresponding to operational continuous casting machine No. 2 in Třinecké železárny, a.s. The obtained results are discussed.
    Źródło:
    Archives of Metallurgy and Materials; 2016, 61, 1; 257-260
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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