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    Wyświetlanie 1-7 z 7
    Tytuł:
    Badania wybranych wskaźników skrawalności podczas frezowania stopu Inconel 718 narzędziami ceramicznymi
    Investigations of selected machinability indicators in the milling of Inconel 718 alloy using ceramic tools
    Autorzy:
    Skoczylas, A.
    Zaleski, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/195526.pdf
    Data publikacji:
    2017
    Wydawca:
    Politechnika Rzeszowska im. Ignacego Łukasiewicza. Oficyna Wydawnicza
    Tematy:
    ceramika SIALON
    frezowanie
    Inconel 718
    chropowatość powierzchni
    moment skrawania
    SIALON ceramics
    milling
    surface roughness
    cutting torque
    Opis:
    W artykule przedstawiono wyniki badań momentu skrawania i chropowatości powierzchni w procesie frezowania czołowego stopu niklu Inconel 718. W eksperymencie wykorzystano narzędzia monolityczne o średnicy d = 12 mm, wykonane z ceramiki SIALON. Badania przeprowadzono przy zmiennych parametrach technologicznych: ap = 0,8-1,2 mm, vc = 400-898 m/min, fz = 0,07-0,16 mm/ostrze. Zauważono, że wzrost posuwu na ostrze fz i głębokości skrawania ap powoduje większe wartości momentu skrawania Mc. W zakresie vc = 400-732 m/min następuje spadek wartości momentu skrawania Mc. Parametry chropowatości powierzchni również zależą od warunków obróbki.
    This paper presents the results of an investigation of the cutting torque and surface roughness in the face milling of nickel-based alloy Inconel 718. In the experimental tests monolithic tools with a diameter of d = 12 mm made of SIALON ceramics were used. The tests were conducted at variable technological parameters: ap = 0.8-2 mm; vc = 400-893 m/min; fz = 0.07-0.16 mm/per tooth. It has been found that increasing the feed per tooth fz and the depth of cut ap resulted in a higher cutting torque. In the range of vc = 400-732 m/min the decrease of cutting torque Mc was observed. Surface roughness parameters also depended on machining conditions.
    Źródło:
    Zeszyty Naukowe Politechniki Rzeszowskiej. Mechanika; 2017, z. 89 [295], 3; 369-378
    0209-2689
    2300-5211
    Pojawia się w:
    Zeszyty Naukowe Politechniki Rzeszowskiej. Mechanika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of plasma cutting parameters upon shapes of bearing curve of C45 steel surface
    Autorzy:
    Skoczylas, A.
    Zaleski, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/102911.pdf
    Data publikacji:
    2015
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    plasma cutting
    bearing curve
    surface
    roughness
    Opis:
    The article presents the results of studies on the effect of plasma cutting technological parameters upon the shape of bearing curves and the parameters of the curve. The topography of surface formed by plasma cutting were analyzed. For measuring surface roughness and determining the bearing curve the appliance T8000 RC120 – 400 by Hommel-Etamic was used together with software.
    Źródło:
    Advances in Science and Technology. Research Journal; 2015, 9, 27; 78-82
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Studies on selected properties of surface layer of C45 steel objects after laser cutting and milling
    Autorzy:
    Zaleski, K.
    Skoczylas, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/103102.pdf
    Data publikacji:
    2014
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    milling
    laser cutting
    surface roughness
    microhardness
    Opis:
    The article presents the results of studying the effects of technological parameters of milling upon surface roughness and microhardness of C45 steel objects after laser cutting. The metallographic structure formed as an effect of cutting by laser was also analyzed. The milling was performed on a FV-580a vertical machining centre. Depth of cut and feed per tooth were changed within the following range: ap = 0.09–0.18 mm and f z = 0.02–0.17 mm/tooth. To measure the surface roughness a Surtronic 3+ profile graphometer was used, whereas microhardness was measured with the use of a Leco LM 700AT microhardness tester. The surface roughness was significantly improved as a result of milling. The laser beam input and output zones were eliminated. Only a part of the layer hardened by laser cutting was removed while milling, in effect of which after milling the hardness of surface layer is much higher than hardness of the core.
    Źródło:
    Advances in Science and Technology. Research Journal; 2014, 8, 23; 26-32
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of vibration shot peening parameters upon shapes of bearing curves of alloy steel surface
    Autorzy:
    Zaleski, K.
    Skoczylas, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/102198.pdf
    Data publikacji:
    2015
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    vibration shot peening
    bearing curve
    surface roughness
    Opis:
    The article presents the results of studies on the effect of technological parameters of vibration shot peening upon the shape of bearing curves and the parameters of that curve. The topography of surface formed in result of vibration shot peening and pre-machining, which was grinding, were analyzed. The material used in the studies was alloy steel 30HGSA. The shot peening process was performed on an appliance equipped with a kinematic vibrator. Shot peening time t, vibrator oscillations (vibrations) frequency ν, as well as vibrator oscillations amplitude A were changed within: t = 1–15 min, ν = 17,5–35 Hz, A = 10,3–17,3 mm. For measuring surface roughness and determining the bearing curve the appliance T8000 RC120-400 by Hommel- Etamic was used together with the software. In result of the machining performed surface roughness decreased, and the parameters of bearing curve improved.
    Źródło:
    Advances in Science and Technology. Research Journal; 2015, 9, 25; 20-26
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Studies on the selected properties of C45 steel elements surface layer after laser cutting, finishing milling and burnishing
    Autorzy:
    Skoczylas, A.
    Zaleski, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/103068.pdf
    Data publikacji:
    2016
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    laser cutting
    finishing milling
    burnishing
    Opis:
    The article presents the results of studies on surface roughness and microhardness of C45 steel elements after laser cutting, and then finishing milling or burnishing. The aim of milling was to get rid of the characteristic “striae” after laser cutting and to improve geometric accuracy. Burnishing caused hardening of C45 steel elements’ surface layer after laser cutting and improvement in surface roughness. In order to measure surface roughness, the Hommel-Etamic device T8000 RC120 – 400 with software was used. The roughness parameters that were analyzed in the article were: amplitude parameters, height parameters and Abbott-Firestone curve. The microhardness measurements were made with the use of Vicker’s hardness test with a weight of 50 g. As a result of the finishing of the surface after cutting, a decrease in surface roughness and improvements in functional qualities were noticed. In addition, hardening of the edgeside area also occurred, which is an advantageous phenomenon.
    Źródło:
    Advances in Science and Technology. Research Journal; 2016, 10, 32; 118-123
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The effect of the conditions of shot peening the Inconel 718 nickel alloy on the geometrical structure of the surface
    Autorzy:
    Zaleski, K.
    Skoczylas, A.
    Brzozowska, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/102751.pdf
    Data publikacji:
    2017
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    surface roughness
    shot peening
    Inconel 718
    Opis:
    This article presents the research results of roughness and topography of the surface of Inconel 718 nickel alloy after shot peening. The evaluation of stereometric properties of the surface layer of the examined material was performed based on the amplitude, height and Abbott-Firestone curve parameters. The shot peening was carried out on the impulse shot peening stand. The impact energy Ez, distance between the traces xs and the ball diameter dk were changed in the range: Ez = 60 ÷ 240 mJ, xs = 0,15 ÷ 0,5 mm, dk = 3,95 ÷ 12,45 mm. The T8000 RC 120-140 device of the Hommel-Etamic company, along with the software, was used for measuring the surface roughness and for determining the material bearing curve. As a result of the machining, the surface roughness was reduced and the selected functional parameters were improved.
    Źródło:
    Advances in Science and Technology. Research Journal; 2017, 11, 2; 205-211
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Impact of Impulse Shot Peening Parameters on Properties of Stainless Steel Surface
    Autorzy:
    Wiertel, M.
    Zaleski, K.
    Gorgol, M.
    Skoczylas, A.
    Zaleski, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/1033967.pdf
    Data publikacji:
    2017-11
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    81.65.-b
    81.20.Wk
    62.20.Qp
    61.72.-y
    78.70.Bj
    Opis:
    Shot peening was applied to austenitic stainless steel 1.4541 (EN). The surface treatment was performed at various impact energies E, impact densities j and ball diameters D. This resulted in improved microhardness, which increases monotonically with the increase of E, j and 1/D. However, its changes with E and j achieve saturation at about 400 HV0.1. On the contrary, no saturation is observed in the investigated range for 1/D. In the un-shot peened 1.4541 (EN) steel, the lifetime component of low intensity was found with use of positron annihilation lifetime spectroscopy (PALS). It corresponds to positron annihilation from delocalized state of positrons in bulk. In the shot peened samples the bulk component is no longer observed. Instead, two types of defects can be identified: vacancy-like defects coupled with edge dislocations and vacancies or their small clusters (consisting 3÷5 vacancies). The results of PALS and hardness testing do not correspond very well, especially in the case of the samples shot peened with balls of varying diameters. The most probable reason for this are different depth profiles of both methods. It seems that the defects, which are responsible for the increase of static microhardness above 400 HV0.1 are located mostly below the surface layer penetrated by positrons.
    Źródło:
    Acta Physica Polonica A; 2017, 132, 5; 1611-1615
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-7 z 7

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