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Wyszukujesz frazę "tube rolling" wg kryterium: Temat

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    Wyświetlanie 1-3 z 3
    Tytuł:
    FEM simulation of the tube rolling process in Diescher’s mill
    Autorzy:
    Pater, Z.
    Tofil, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/102656.pdf
    Data publikacji:
    2014
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    tube rolling
    FEM
    state of stress and strain
    Opis:
    This paper deals with the issue of numerical modelling of the piercing process of a thick–walled bush in a two-rolled skew rolling mill, equipped with guiding devices of Diescher’s type. After a short characteristic of the subject matter, the developed geometric model of the process was discussed, with taking kinematics of tools movement and thermal phenomena present in metal during forming into consideration. Next, the results of calculations were presented in a form of fields of strain, damage criterion and temperature. Distributions of force parameters acting on particular tools during the process of bush rolling were also given.
    Źródło:
    Advances in Science and Technology. Research Journal; 2014, 8, 22; 51-55
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Microstructure and Corrosion Behaviors of Biodegradable Mg-1Zn-1Zr-xSn Alloys Prepared by Powder-In-Tube Rolling
    Autorzy:
    Zakiyuddin, A.
    Lee, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/356604.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    biodegradable Mg alloy
    powder-in-tube rolling
    corrosion behavior
    Opis:
    The objective of the present study was to investigate the effects of Sn addition on the mechanical and corrosion properties of Mg-1Zn-1Zr-xSn (x = 1, 2, 3, 4, 5 wt.%) alloys prepared by powder-in-tube rolling (PTR) method. The PTR-treated Mg alloys reached 98.3% of theoretical density. The hardness of the alloy increased with Sn addition. Two main intermetallic phases, Mg2Sn and Zn2Zr3, were formed in the alloys. The Mg2Sn intermetallic particles were observed along the grain boundaries, while the Zn2Zr3 particles were distributed in the Mg matrix. The addition of 1 wt. % Sn caused the corrosion potential to shift toward a more positive value, and the resulting alloy exhibited low corrosion current density.
    Źródło:
    Archives of Metallurgy and Materials; 2018, 63, 3; 1467-1471
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Defects and Incompatibilities of Pipes Manufactured by Pilgrim Method
    Autorzy:
    Biś, Jesica
    Koczurkiewicz, Bartosz
    Mazur, Igor
    Powiązania:
    https://bibliotekanauki.pl/articles/27315809.pdf
    Data publikacji:
    2019
    Wydawca:
    STE GROUP
    Tematy:
    rolling process
    pilgrim method
    defects
    seamless tube
    pipe
    proces toczenia
    metoda pielgrzyma
    wady
    bezszwowa rurka
    rura
    Opis:
    The increase in the quality requirements for the pipes and the increasing needs to reduce production costs, while increasing the efficiency of the process in market of hot rolled pipes are observed. One of the cost reduction factors is the reduction of the number of defects by early detection and, if possible, the removal of non-conformities. Incompatibility is an error that can be removed in accordance with the performance standard that does not cause defects (Norma API). The defect is imperfection that is so important that it is the basis for the removal of the product or its part based on the criteria set out in the performance standards. In pipe manufacturing processes, defects and batch incompatibilities can be distinguished, which arise in the steelworks during metal solidification and roll forming in the course of metal processing. The defect may also arise as a result of removing steel material or result from rolling processes defects. The paper presents the analysis of the process of quality control of pipes manufactured using the pilgrim method on the basis of real process data. The analysis were involved 1070 pieces of ingots from 11 different melts for rolling pipes. At various stages of production, discrepancies and defects were revealed, which were caused by metallurgical or technological defects associated with rolling pipes. The total amount of discrepancies and defects eliminated 168 pieces of finished pipes. The aim of the work is to show that by means of appropriately selected methods of eliminating imperfections, it is possible to increase the efficiency of the manufacturing process.
    Źródło:
    New Trends in Production Engineering; 2019, 2, 2; 24-35
    2545-2843
    Pojawia się w:
    New Trends in Production Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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