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Wyszukujesz frazę "metal material" wg kryterium: Temat

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    Wyświetlanie 1-5 z 5
    Tytuł:
    An Assessment of Appropriateness of the Choice of Parameters for Refractory Stampings Fabrication Process
    Autorzy:
    Orłowicz, A. W.
    Mróz, M.
    Tupaj, M.
    Trytek, A.
    Kupiec, B.
    Korzeniowski, M.
    Pająk, D.
    Sondej, K.
    Kozak, L.
    Powiązania:
    https://bibliotekanauki.pl/articles/382313.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    die stamping
    refractory materials
    metal die
    material density
    tłoczenie
    materiały ogniotrwałe
    matryca
    gęstość
    Opis:
    The paper presents results of an analysis of material density distribution in stampings press-moulded in metal dies from raw refractory materials based on alumina-magnesia-carbon aggregate. The stampings, fabricated on LAEIS HPF 1250 pressing machine, are blanks from which refractory precast shapes are manufactured by means of drying and firing. Samples for material density evaluation were cut out from test stampings with the use of diamond-reinforced disc. Density of the material was determined in thirteen layers of stampings denoted with letters A through M.
    Źródło:
    Archives of Foundry Engineering; 2016, 16, 2; 55-60
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Determination of Unit Pressure Force in Material Volume in the Course of Refractory Stamping Press Moulding
    Autorzy:
    Orłowicz, A. W.
    Mróz, M.
    Cisek, Z.
    Tupaj, M.
    Trytek, A.
    Kupiec, B.
    Korzeniowski, M.
    Sondej, K.
    Kozak, L.
    Powiązania:
    https://bibliotekanauki.pl/articles/382282.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    die stamping
    refractory materials
    metal die
    material density
    tłoczenie
    materiały ogniotrwałe
    matryca
    gęstość
    Opis:
    The paper presents results of assessment of the unit pressure force within the refractory material volume in the course press-moulding of stampings for refractory precast shapes. The force was evaluated with the use of physical simulation of deformation undergone by lead balls placed in the raw refractory mass subjected to pressing in a metal die. To determine the value of unit pressure force applied to the aggregate grains in the course of stamping press-moulding, physical model of deformation of a sphere induced by the uniaxial stress state was used.
    Źródło:
    Archives of Foundry Engineering; 2016, 16, 2; 61-68
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Study of Thermal Properties of Cast Metal-Ceramic Composite Foams
    Autorzy:
    Gawdzińska, K.
    Chybowski, L.
    Przetakiewicz, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/382873.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    casting material
    foundry technology
    metal composite foam
    ceramic composite foam
    thermal properties
    materiał odlewniczy
    technologia odlewnicza
    piana metalowa
    piana ceramiczna
    piana kompozytowa
    właściwości termiczne
    Opis:
    Owing to its properties, metallic foams can be used as insulation material. Thermal properties of cast metal-ceramic composite foams have applications in transport vehicles and can act as fire resistant and acoustic insulators of bulkheads. This paper presents basic thermal properties of cast and foamed aluminum, the values of thermal conductivity coefficient of selected gases used in foaming composites and thermal capabilities of composite foams (AlSi11/SiC). A certificate of non-combustibility test of cast aluminum-ceramic foam for marine applications was included inside the paper. The composite foam was prepared by the gas injection method, consisting in direct injection of gas into liquid metal. Foams with closed and open cells were examined. The foams were foaming with foaming gas consisting of nitrogen or air. This work is one of elements of researches connected with description of properties of composite foams. In author's other works acoustic properties of these materials will be presented.
    Źródło:
    Archives of Foundry Engineering; 2017, 17, 4; 47-50
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Casting routes for porous metals production
    Autorzy:
    Lichý, P.
    Bednarova, V.
    Elbel, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/382433.pdf
    Data publikacji:
    2012
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    innowacyjne technologie odlewnicze
    innowacyjne materiały odlewnicze
    rozwój produktu
    pianka metalowa
    innovative foundry technologies
    innovative foundry material
    product development
    metal foams
    Opis:
    The last decade has seen growing interest in professional public about applications of porous metallic materials. Porous metals represent a new type of materials with low densities, large specific surface, and novel physical and mechanical properties, characterized by low density and large specific surface. They are very suitable for specific applications due to good combination of physical and mechanical properties such as high specific strength and high energy absorption capability. Since the discovery of metal foams have been developed many methods and techniques of production in liquid, solid and gas phases. Condition for the use of metal foams - advanced materials with unique usability features, are inexpensive ways to manage their production. Mastering of production of metallic foams with defined structure and properties using gravity casting into sand or metallic foundry moulds will contribute to an expansion of the assortment produced in foundries by completely new type of material, which has unique service properties thanks to its structure, and which fulfils the current demanding ecological requirements. The aim of research conducted at the department of metallurgy and foundry of VSB-Technical University Ostrava is to verify the possibilities of production of metallic foams by conventional foundry processes, to study the process conditions and physical and mechanical properties of metal foam produced. Two procedures are used to create porous metal structures: Infiltration of liquid metal into the mold cavity filled with precursors or preforms and two stage investment casting.
    Źródło:
    Archives of Foundry Engineering; 2012, 12, 1; 71-74
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Enhancement of Heat Transfer in PCM by Cellular Zn-Al Structure
    Autorzy:
    Naplocha, K.
    Koniuszewska, A.
    Lichota, J.
    Kaczmar, J. W.
    Powiązania:
    https://bibliotekanauki.pl/articles/382339.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    innovative foundry technology
    innovative foundry material
    metal cellular foam
    porous Zn-Al structure
    investment casting
    heat transfer
    innowacyjna technologia odlewnicza
    innowacyjny materiał odlewniczy
    pianka metalowa
    struktura porowata Zn-Al
    odlewanie precyzyjne
    wymiana ciepła
    Opis:
    Development of open cellular metal foam technology based on investment casting applying the polyurethane pattern is discussed. Technological process comprises preparing of the ceramic mold applying PUR foam as the pattern, firing of the mold, pouring of the liquid Zn-Al alloy into the mold and washing out of the ceramic material from cellular casting. Critical parameters such as the temperature of mold and poured metal, design of gating system affected by metalostatic pressure allowed to produce castings with cellular structure characterized by the open porosity. Metal cellular foams with the open porosity embedded in phase change material (PCM) enhance heat transfer and reduce time operations in energy storage systems. Charging and discharging were performed at the laboratory accumulator by heating and cooling with flowing water characterized by the temperatures of 97-100ºC. Temperature measurements were collected from 7 different thermocouples located in the accumulator. In relation to the tests with pure paraffin, embedding of the metal Zn-Al cellular foam in paraffin significantly decreases temperature gradients and melting time of paraffin applied as PCM characterized by the low thermal conductivity. Similarly, reduction of discharging time by this method improves the efficiency of thermal energy storage system applied in solar power plants or for the systems of energy efficient buildings.
    Źródło:
    Archives of Foundry Engineering; 2016, 16, 4; 91-94
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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