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Wyszukujesz frazę "Ivanov, Olexandr" wg kryterium: Autor

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    Tytuł:
    Thermodynamic approach to the development and selection of hardfacing materials in energy industry
    Autorzy:
    Shihab, Thaer
    Prysyazhnyuk, Pavlo
    Semyanyk, Iryna
    Anrusyshyn, Roman
    Ivanov, Olexandr
    Troshchuk, Lyubomyr
    Powiązania:
    https://bibliotekanauki.pl/articles/409820.pdf
    Data publikacji:
    2020
    Wydawca:
    STE GROUP
    Tematy:
    flux-cored electrodes
    hardfacing
    alloying system
    Calphad method
    wear resistance
    Opis:
    The overall study objection is selection and optimization all available thermodynamic data required for using calculation of phase diagram (CALPHAD) technique within the Fe-C-Cr-Mn-Si-Ti system. Such data collected in the thermodynamic database can be used for predicting the phase constitution states of a given composition for Fe-based hardfacing materials, which often use in energy industry in order to increase the abrasion and impact wear resistance of equipment parts. In order to compare theroretical calculation results with experimental data, four different types of hardfacing were deposited using flux-cored arc welding. Microstructure and chemical composition of deposited layers was investigated using optical and scanning electron microscopy together with energy dispersive X-ray spectroscopy. Comparison of experimental and computed results shows that they are in good agreement in meaning of presence of all-important phase equilibrium regions. The developed database can be used for rational selection of hardfacing materials for energy industry equipment and reasonable choice of new alloying systems.
    Źródło:
    Management Systems in Production Engineering; 2020, 2 (28); 84-89
    2299-0461
    Pojawia się w:
    Management Systems in Production Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Using FCAW with Electrodes Based on Fe-Ti-Mo-B-C System for Increasing of Durability of Junk Removal Tools
    Autorzy:
    Ivanov, Olexandr
    Prysyazhnyuk, Pavlo
    Romanyshyn, Liubomyr
    Romanyshyn, Taras
    Mosora, Yurii
    Powiązania:
    https://bibliotekanauki.pl/articles/2065035.pdf
    Data publikacji:
    2021
    Wydawca:
    STE GROUP
    Tematy:
    abrasion resistance
    flux cored electrodes
    hardfacing
    junk mills
    microstructure
    Opis:
    In this work were analyzed factors and working conditions that leads to the wearing of junk mills tools that are a part of junk removal equipment used in drilling and workover of borehole. Such equipment is a part of oil and gas industry and work under condition of intense abrasive wearing with increased pressures and cyclic loads. Was established that traditional hardfacing materials based on the Fe-Cr-C system are not effective for improvement of abrasion resistance of elements of such equipment due to their low crack resistance and low hardness of chromium carbides. The aim of this work was to increase a durability of that equipment by using of flux cored electrodes with reaction components of pure metal powders, which leads to forming the fine-grained structure with increased hardness. Powders of Ti, Mo, B4C and their combinations were used. Structures of the hardfacing coatings were investigated by method of metallography, scanning electron microscopy (SEM). Abrasion wear tests were held under condition of fixed and non-fixed abrasion. Using of pure metal powders led to formation of a fine-grained structure with grains of Mo2FeB2 that forms around TiC, which work as modifier. It was investigated that the researched material based on Fe-Ti-Mo-C-B system that was used for increasing the wear resistance of junk mills led to increasing of the TBO period in 1.5-1.6 times comparing with serial hardfacing materials based on tungsten.
    Źródło:
    Multidisciplinary Aspects of Production Engineering; 2021, 4, 1; 132--141
    2545-2827
    Pojawia się w:
    Multidisciplinary Aspects of Production Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-2 z 2

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