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    Wyświetlanie 1-3 z 3
    Tytuł:
    A Simplified Approach for the Hydro-forming Process of Bi-metallic Composite Pipe
    Autorzy:
    Zheng, M.
    Gao, H.
    Teng, H.
    Hu, J.
    Tian, Z.
    Zhao, Y.
    Powiązania:
    https://bibliotekanauki.pl/articles/355930.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    metallic pipe
    composite
    hydroforming
    pressure
    residual stress
    Opis:
    In this article, it aims to propose effective approaches for hydro-forming process of bi-metallic composite pipe by assuming plane strain and elastic-perfectly plastic material model. It derives expressions for predicting hydro-forming pressure and residual stress of the forming process of bi-metallic composite pipe. Test data from available experiments is employed to check the model and formulas. It shows the reliability of the proposed model and formulas impersonally.
    Źródło:
    Archives of Metallurgy and Materials; 2017, 62, 2A; 879-883
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of Cone Size on the Bonding Strength of Bimetallic Composite Pipes Produced by Drawing Approach
    Autorzy:
    Zheng, M.
    Zhao, T.
    Gao, H.
    Teng, H.
    Hu, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/352274.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    bi-metallic composite pipe
    drawing approach
    cone size
    interfacial bonding strength
    ideal elastoplastic
    Opis:
    The effect of cone size on interfacial bonding strength of bimetallic composite pipe manufactured by drawing approach is studied on base of the plane strain assumption and ideal elastic-plastic model, a simple expression for the effect of cone size on the bonding strength of bimetallic composite pipes is proposed. The agreement of the predicted results with the experimental results shows the reliability.
    Źródło:
    Archives of Metallurgy and Materials; 2018, 63, 1; 451-456
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Microstructure Examinations in Corners of the Low-Carbon Steel Slabs from Continuos Caster Machine
    Autorzy:
    Kwinta, G.
    Kara, S.
    Kalandyk, B.
    Zapała, R.
    Pałka, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/351069.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    API 5L line pipe steels
    low-carbon micro alloyed steel
    microstructure
    non-metallic inclusion
    Opis:
    The exposed selvedge layers in slabs cast by the continuous process should be free from surface defects, which in most cases appear in the form of cracks on the casting surface and run to its interior. In addition to the parameters of the casting process, the occurrence of such defects depends on the chemical composition of cast steel, on the segregation of surface active elements and formation of the precipitates of carbides, nitrides and other phases. Due to the frequent occurrence of defects in corners of the slabs, non-destructive testing was performed on the mechanically cleaned surfaces of slabs. The test material was low-carbon API(American Petroleum Institute API 5L standard) steel micro alloyed with Nb and Ti designed for the production of pipes to handle gas, oil and other liquid and gaseous fuels. Despite the use of different methods of inspection, i.e. ultrasonic, magnetic particle and penetrant, cracks were not traced in the examined material. Then, from the corners of the examined slabs, specimens were cut out for metallographic examinations. The main purpose of these examinations was to disclose the presence of possible cracks and micro cracks on the surfaces transversal and longitudinal to the direction of casting. At the same time, studies were conducted to establish the number and morphology of non-metallic inclusions in selvedge layers of the slab corners and axis. Additionally, hardness of the slabs was measured. The conducted studies revealed only some minor differences in the slab hardness along its axis (130 ÷ 135 HB) and in selvedge layers (120 ÷ 123 HB).
    Źródło:
    Archives of Metallurgy and Materials; 2016, 61, 4; 2051-2056
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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