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    Wyświetlanie 1-4 z 4
    Tytuł:
    The Effect of Carbides Orientation in NC11 Steel on Scratch Susceptibility of Die Inserts Used to Press Stampings for Refractory Shapes
    Autorzy:
    Orłowicz, A. W.
    Mróz, M.
    Tupaj, M.
    Trytek, A.
    Kupiec, B.
    Korzeniowski, M.
    Sondej, K.
    Kozak, L.
    Powiązania:
    https://bibliotekanauki.pl/articles/947360.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    steel NC11
    die insert
    scratch
    stal NC11
    wkładka
    zarysowania
    Opis:
    NC11 steel, in view of the specificity of its manufacturing process, is characterised with band-like orientation of carbides. Depending on the direction of cutting the material for the inserts out of commercially available steel products, carbide bands can be oriented in parallel or perpendicularly to the direction in which aggregate grains move in the process of pressing stampings. It has been found that in case of scratches made in direction perpendicular to carbide bands, depth of the scratches is less than this observed when scratches are made in direction coinciding with prevailing orientation of carbide precipitates.
    Źródło:
    Archives of Foundry Engineering; 2016, 16, 2; 95-98
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Examination of Cast Iron Material Properties by Means of the Scratch Method
    Autorzy:
    Trytek, A.
    Orłowicz, W.
    Mróz, M.
    Tupaj, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/382221.pdf
    Data publikacji:
    2012
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    cast iron
    structure
    GTAW process
    scratch test
    żeliwo
    struktura
    proces GTAW
    test zarysowania
    Opis:
    The paper presents results of examination of unalloyed cast iron with diversified structure of the metallic matrix carried out by means of the scratch method. The research work was carried out with cast sample plates and with castings superficially remelted by means of the Gas Tungsten Arc Welding (GTAW) method. The test was carried out with load force of 5 N. Parameters such as the coefficient of friction, penetration depth, and acoustic emission were analysed.
    Źródło:
    Archives of Foundry Engineering; 2012, 12, 2s; 75-80
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A Possibility to Improve Resistance of Cast-iron Wood Chip Fine Grinder Liners to Abrasive Wear
    Autorzy:
    Orłowicz, A. W.
    Mróz, M.
    Tupaj, M.
    Kupiec, B.
    Jacek, M.
    Radoń, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/380991.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    ductile cast iron
    WCCoCr coating
    scratch test
    żeliwo sferoidalne
    powłoka WCCoCr
    pomiar zarysowania
    Opis:
    The paper deals with the issue of potential for improvement of resistance of wood chip fine grinders to abrasive wear by providing them with WCCoCr coating applied with the use of atmospheric plasma spraying (APS). The study focused on establishing parameters of the technological process of spraying a 250–270 μm thick coating onto surface of ductile cast iron castings used to date as grinder linings. The presented data include results of microstructure examination, chemical composition analysis, HV hardness measurements, and scratch tests for both previous and new variant of linings. The obtained scratch test results indicate that the material of the coating is characterized with definitely lower susceptibility to scratching. The scratch made on coating was 75–84 μm wide and 7.2–8.2 μm deep, while the scratch on cast iron was distinctly wider (200–220 μm) and deeper (8.5–12.8 μm). In case of cast iron, the range of variability in scratch width and depth was definitely larger. This can be explained with large difference in hardness of individual components of microstructure of cast iron and significantly larger plastic deformation of cast iron compared to the coating revealed in the course of indenter motion over surfaces of the two materials. It has been found that application of WCCoCr coating offered better resistance of lining surfaces to scratching which can be considered a rationale for undertaking in-service tests.
    Źródło:
    Archives of Foundry Engineering; 2018, 18, 4; 35-38
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Sclero-topometry metrology in valorisation of waste oil for micro-machining of ductile cast iron
    Autorzy:
    Eymard, S.
    Ignaszak, Z.
    Mathia, T. G.
    Powiązania:
    https://bibliotekanauki.pl/articles/947506.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    sclero topometry
    waste oil
    scratch test
    ductile cast iron
    oil revalorizationin machining
    olej odpadowy
    próba zarysowania
    żeliwo sferoidalne
    Opis:
    During the time, the specific characteristics and the efficient life time of oil progressively decrease, due to complex pollution, ultimately making the oil unsuitable for the initial applications. The strategy to regenerate and to valorise waste oils is investigated using improved combinations of sclerometric and topometric tests on ductile nodular cast iron. Tribo-abrasive tests are performed in critical conditions, with base oil, waste oil and regenerated oil, of similar viscosities in order to discriminate their interfacial performances. The forms of the scratch traces indicate wear resistance and tendency to elasto-plastic deformation. The mechanisms of deformation and frictional behaviours were evaluated using optical and Scanning Electron Microscopy and measured for various tribological conditions with tactile and optical profilometry. The Energy Dispersive X ray Spectroscopy completes the chemical superficial distribution of pertinent elements. The surface topography metrology is used to characterize the scratch profiles and to determine the volume of the displaced and removed material, as well as maximum pit height. The originality of this paper is that it is a unique approach specifically devoted to transformer oil concerning tribological conditions.
    Źródło:
    Archives of Foundry Engineering; 2013, 13, 4; 29-38
    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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