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    Wyświetlanie 1-4 z 4
    Tytuł:
    Cast construction elements for heat treatment furnaces
    Autorzy:
    Piekarski, B.
    Drotlew, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/382333.pdf
    Data publikacji:
    2011
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    innovative foundry technology
    innovative foundry material
    heat treatment plant
    innowacyjna technologia odlewnicza
    innowacyjny materiał odlewniczy
    zakład obróbki cieplnej
    Opis:
    The study presents sketches and photos of the cast creep-resistant components used in various types of heat treatment furnaces. The shape of the elements results from the type of the operation carried out in the furnace, while dimensions are adjusted to the size of the furnace working chamber. The castings are mainly made from the high-alloyed, austenitic chromium-nickel or nickel-chromium steel, selecting the grade in accordance with the furnace operating conditions described by the rated temperature, the type and parameters of the applied operating atmosphere, and the charge weight. Typical examples in this family of construction elements are: crucibles, roller tracks, radiant tubes and guides. The majority of castings are produced in sand moulds.
    Źródło:
    Archives of Foundry Engineering; 2011, 11, 3 spec.; 163-170
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Flexibility of Pusher Furnace Grate
    Autorzy:
    Słowik, J. A.
    Drotlew, A.
    Piekarski, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/383197.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    innovative foundry technology
    innovative foundry material
    heat treatment plant
    pusher furnace
    innowacyjna technologia odlewnicza
    innowacyjny materiał odlewniczy
    obróbka cieplna
    piec przepychowy
    Opis:
    The lifetime of guide grates in pusher furnaces for heat treatment could be increased by raising the flexibility of their structure through, for example, the replacement of straight ribs, parallel to the direction of grate movement, with more flexible segments. The deformability of grates with flexible segments arranged in two orientations, i.e. crosswise (perpendicular to the direction of compression) and lengthwise (parallel to the direction of compression), was examined. The compression process was simulated using SolidWorks Simulation program. Relevant regression equations were also derived describing the dependence of force inducing the grate deformation by 0.25 mm ‒ modulus of grate elasticity ‒ on the number of flexible segments in established orientations. These calculations were made in Statistica and Scilab programs. It has been demonstrated that, with the same number of segments, the crosswise orientation of flexible segments increases the grate structure flexibility in a more efficient way than the lengthwise orientation. It has also been proved that a crucial effect on the grate flexibility has only the quantity and orientation of segments (crosswise / lengthwise), while the exact position of segments changes the grate flexibility by less than 1%.
    Źródło:
    Archives of Foundry Engineering; 2016, 16, 4; 137-140
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Castings in Pit Furnaces for Heat Treatment
    Autorzy:
    Drotlew, A.
    Piekarski, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/380488.pdf
    Data publikacji:
    2015
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    innovative foundry technology
    innovative foundry material
    heat treatment plant
    cast grate
    pit furnace
    innowacyjna technologia odlewnicza
    innowacyjny materiał odlewniczy
    zakład obróbki cieplnej
    paleta odlewnicza
    piec grzewczy
    Opis:
    The article presents examples of typical designs of the cast technological equipment used in pit furnaces for the heat treatment of metals and alloys. The equipment consists of a set of castings connected together in a proper way and used for the formation and transport of charge, which consists of the heat treated parts. Typical equipment has the shape of a cylinder. Usually it comprises a basic pallet (carrier) completed with other elements, i.e. intermediate pallets, rods, spacers, cross-bars and hooks, their number depending on the number and shape of heat-treated products and on production volume. The simplest design solution is to use a cylindrical basket where heat treated products are arranged in a loose configuration. The majority of elements forming the furnace equipment are castings produced in sand molds. Some of them were designed and manufactured in a Foundry of the West Pomeranian University of Technology in Szczecin.
    Źródło:
    Archives of Foundry Engineering; 2015, 15, 3 spec.; 11-14
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Materials for Reformer Furnace Tubes. History of evolution
    Autorzy:
    Garbiak, M.
    Jasiński, W.
    Piekarski, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/380600.pdf
    Data publikacji:
    2011
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    innovative foundry technology
    innovative foundry material
    damage
    reformer furnace tubes
    Ni-Cr austenitic cast steel
    innowacyjna technologia odlewnicza
    innowacyjny materiał odlewniczy
    uszkodzenie
    piec rurowy
    staliwo austenityczne
    Opis:
    The paper discusses progress that has been made over the past sixty years in increasing the service life of centrifugally cast, creepresistant tubes operating in reformer furnaces. Attention was mainly focused on the principles of selection of the chemical composition of castings to improve their creep behaviour. The reasons accounting for withdrawal of tubes from service were indicated. Examples of chemical composition and mechanical properties obtained in creep-resistant Ni-Cr cast steel used by the leading European tube manufacturers were stated. Trends in current research aiming at further improvement of the tube performance characteristics were mentioned.
    Źródło:
    Archives of Foundry Engineering; 2011, 11, 2 spec.; 47-52
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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