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    Wyświetlanie 1-8 z 8
    Tytuł:
    Doświadczenia przy projektowaniu i budowie nawierzchni betonowych w Polsce
    Autorzy:
    Mackiewicz, P.
    Szydło, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/343077.pdf
    Data publikacji:
    2017
    Wydawca:
    Stowarzyszenie Producentów Cementu
    Tematy:
    nawierzchnia drogowa
    nawierzchnia betonowa
    projektowanie
    doświadczenia
    nawierzchnia sztywna
    podbudowa
    schemat warstw
    zasady doboru
    wykończenie powierzchni
    Źródło:
    Budownictwo, Technologie, Architektura; 2017, 2; 38-45
    1644-745X
    Pojawia się w:
    Budownictwo, Technologie, Architektura
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Convergence technology for vehicle part surface finishing
    Autorzy:
    Sikulskiy, Valeriy
    Maiorova, Kateryna
    Vorobiov, Yurii
    Fomichev, Petro
    Myronova, Svitlana
    Powiązania:
    https://bibliotekanauki.pl/articles/27314060.pdf
    Data publikacji:
    2023
    Wydawca:
    Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
    Tematy:
    honing
    superfinishing
    surface finishing
    electrochemical machining
    impulse thermal energy method
    honowanie
    dogładzanie
    wykończenie powierzchni
    obróbka elektrochemiczna
    Opis:
    The subject of this research is convergence technology for the surface finishing of vehicle parts. A literature review has been conducted to carry out a comparative analysis of existing methods for the surface finishing of parts used in the manufacturing of aircraft, hydraulic and pneumatic devices, and other vehicles. Prospects are shown for further research on methods with the aim of creating a complex technology (i.e., convergence) that combines information technologies; nanotechnologies; and thermochemical, electrochemical, and mechanical processing methods. A method is proposed for selecting and combining surface finishing methods according to a five-point expert assessment, which allows the batch processing of vehicle parts. Based on this method, the concept of convergence technology for the surface finishing of vehicle parts is proposed, which includes the impulse thermal energy method, honing, superfinishing, and electrochemical processing. An expanded process is presented for manufacturing parts with high-precision, low-roughness surfaces and a specified microrelief by using electrochemical superfinishing and electrochemical honing. A scheme of the concentration (focusing) of the current flow during electrochemical superfinishing due to the movement of the electrode relative to the part surface is proposed, which enables the effect of surface polishing and the removal of oxidation products. Convergence technology for the surface finishing of vehicle parts will provide parts’ geometric dimensions with micro- and nano-precision and allow the precision machining of small-diameter holes and complex profiles, increased machining accuracy (up to 0.001 microns), the possibility of batch processing, and the possibility of process automation.
    Źródło:
    Transport Problems; 2023, 18, 1; 117--127
    1896-0596
    2300-861X
    Pojawia się w:
    Transport Problems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Numerical modelling of behaviour of surface finishing of composite materials
    Autorzy:
    Vosáhlo, Josef
    Syrovátková, Martina
    Petrů, Michal
    Powiązania:
    https://bibliotekanauki.pl/articles/102767.pdf
    Data publikacji:
    2018
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    surface finishing
    gravel
    composite
    material models
    FEM model
    wykończenie powierzchni
    żwir
    kompozyt
    modele materiałowe
    model MES
    Opis:
    The article describes and compares the course of the resistance test of a treated surface against the impact of gravel with the model of the test process. The two series of composite samples with surface treatment underwent a so-called gravel test, followed by the evaluation of the test results. Simultaneously with the tests, the material models of the tested composites were created. The input values obtained were used to create a FEM model. The model describes the response of the surface treatment to the impact of the object i.e. gravel of the given size and weight/number. The modelling results were compared with the results of real tests.
    Źródło:
    Advances in Science and Technology. Research Journal; 2018, 12, 1; 48-53
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The influence of the brake pad surface machining and finishing on its friction performance : examined by inertia brake dynamometer testing
    Autorzy:
    Dąbrowski, T.
    Kurczyński, D.
    Łagowski, P.
    Warianek, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/315301.pdf
    Data publikacji:
    2018
    Wydawca:
    Instytut Naukowo-Wydawniczy "SPATIUM"
    Tematy:
    brake pads
    friction characteristics
    surface machining
    surface finishing
    machining methods
    finishing methods
    noise emission
    brakes test
    dynamometry
    klocki hamulcowe
    właściwości cierne
    obróbka powierzchni
    wykończenie powierzchni
    metody obróbki
    metody wykańczające
    emisja hałasu
    badania hamulców
    pomiary dynamometryczne
    Opis:
    The article describes the influence of brake pads surface machining and finishing on their friction characteristics. It shows the methods of machining and finishing of the brake pads surface and their influence on noise emission and performance. It shows the brake dynamometer test results obtained on three brake pads which have three different types of surface modification and their detailed analysis and comparison.
    Źródło:
    Autobusy : technika, eksploatacja, systemy transportowe; 2018, 19, 6; 399-404, CD
    1509-5878
    2450-7725
    Pojawia się w:
    Autobusy : technika, eksploatacja, systemy transportowe
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Profilometria laserowa w badaniach kamiennych elementów budowlanych poddanych obróbce mechanicznej i termicznej
    Application of laser profilometry in the investigation of mechanically and thermally treated stone elements
    Autorzy:
    Rembiś, Marek
    Kośla, Maria
    Powiązania:
    https://bibliotekanauki.pl/articles/2076217.pdf
    Data publikacji:
    2021
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    profilometria laserowa
    płyty granitowe
    płyty bazaltowe
    wykończenie piłą
    płomieniowane wykończenie
    chropowatość powierzchni
    falistość powierzchni
    laser profilometry
    granite slabs
    basalt slabs
    saw cut finish
    flamed finish
    surface roughness
    surface waviness
    Opis:
    The investigation was carried out on stone slabs sawn and flamed from three commercial types of igneous rocks: the “Sunny Desert” granite, “Twilight” basalt and “Imperial Red” granite. With the following method of laser profilometry, 510 surface profiles were recorded, each of them containing 1280 measuring points. The parameters of roughness and waviness were calculated for each stone surface with a horizontal measurement accuracy of 1 mmandaverticaloneof10mm. The data of laser profiling were correlated with petrographic observations in order to identify the rock components that are most exposed to damage while preparing the stone slabs. The results indicate that the thermally treated slabs have their surface roughness distinctly higher and their waviness higher even several times than the slabs obtained by sawing. Among the three flamed slabs, the highest roughness is revealed by the medium-crystalline “Sunny Desert” granite, while in case of the cut ones - by the unequally crystalline “‘Imperial Red” granite. The waviness of the surfaces obtained by slab cutting and flaming is comparable in both investigated granite types. The “Twilight” basalt, which shows the porphyritic-aphanitic texture and the directional arrangement of its mineral components, reveals the lowest values of all the parameters analysed.
    Źródło:
    Przegląd Geologiczny; 2021, 69, 2; 120--126
    0033-2151
    Pojawia się w:
    Przegląd Geologiczny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Aplication of Vibro – Abrasive Machining for Smoothing of Castings
    Autorzy:
    Bańkowski, D.
    Spadło, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/381382.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    odlewy
    obróbka wibrościerna
    wykończenie
    jakość powierzchni
    castings
    vibro-abrasive machining
    finishing
    burrs removal
    surface quality
    Opis:
    The paper presents the production problems related to casting using precision casting methods. The essential adverse effect of the casting process is the presence of burrs understood as oversize material necessary to remove the next finishing operations. In addition, the surfaces of the cast often characterized by a porous structure. One of the methods to improve the smoothness of the area proposed by the authors is the use of vibro-abrasive finishing. This type of treatment is widely used in the treatment of finishing small objects as well as complex shapes. Objects in the form of casting in the first step was treated with aggressive deburring polyester matrix abrasive media. The second stage was polishing, with using smoothing porcelain media. The study evaluated the effect of vibro-abrasive machining typical cast on the basic parameters of the geometric structure of the surface. Observations using optical microscope Nicon Eclipse MA 200 compared changes in surface microstructure and the effect of deburring. Clearly we can say that vibro-abrasive machining an effective way of reducing the size of burrs, smoothing and lightening the surface of objects made by casting.
    Źródło:
    Archives of Foundry Engineering; 2017, 17, 1; 169-173
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The influence of vibrations on surface roughness formed during precision boring
    Autorzy:
    Korzeniewski, D.
    Znojkiewicz, N.
    Powiązania:
    https://bibliotekanauki.pl/articles/94196.pdf
    Data publikacji:
    2017
    Wydawca:
    Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
    Tematy:
    vibrations
    surface roughness
    precision boring
    finish cutting
    drgania
    chropowatość powierzchni
    efektywność wiercenia
    trafność wierceń
    wykończenie
    Opis:
    In this paper, the analysis of vibrations on surface roughness generated during boring with the application of the conventional boring tool and one with the damper is presented. The experiments included the measurement of vibration accelerations carried out with the piezoelectric sensor, as well as the evaluation of surface roughness parameters after each machining pass. The obtained results reveal that in the investigated range, no stability loss was found. Furthermore, the growth of the rotational speed induces the increase of vibration level, as well as the growth of the differences between the vibration values generated during boring with the conventional tool and one equipped with damper. Vibrations have also the direct influence on the machined surface roughness. In case of the tool equipped with the damper, the tool’s overhang L had more intense influence than rotational speed n. However, for the conventional boring tool this dependency was unequivocal.
    Źródło:
    Archives of Mechanical Technology and Materials; 2017, 37; 1-5
    2450-9469
    Pojawia się w:
    Archives of Mechanical Technology and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Influence of Abrasive Paste on the Effects of Vibratory Machining of Brass
    Autorzy:
    Bańkowski, D.
    Spadło, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/382264.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    surface treatment
    product development
    vibratory machining
    surface roughness
    brass
    finishing
    obróbka powierzchniowa
    rozwój produktu
    obróbka wibracyjna
    chropowatość powierzchni
    wykończenie
    mosiądz
    Opis:
    The article presents the results of research on the finishing of M63 Z4 brass by vibratory machining. Brass alloy was used for the research due to the common use of ammunition elements, cartridge case and good cold forming properties on the construction. Until now, the authors have not met with the results of research to determine the impact of abrasive pastes in container processing. It was found that the additive for container abrasive treatment of abrasive paste causes larger mass losses and faster surface smoothing effects. The treatment was carried out in two stages: in the first stage, the workpieces were deburred and then polished. Considerations were given to the impact of mass of workpieces, machining time and its type on mass loss and changes in the geometric structure of the surface. The surface roughness of machining samples was measured with the Talysurf CCI Lite optical profiler. The suggestions for future research may be to carry out tests using abrasive pastes with a larger granulation of abrasive grains, and to carry out tests for longer processing times and to determine the time after which the parameters of SGP change is unnoticeable.
    Źródło:
    Archives of Foundry Engineering; 2019, 4; 5-10
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-8 z 8

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