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Wyszukujesz frazę "właściwości tribologiczne" wg kryterium: Temat


Wyświetlanie 1-8 z 8
Tytuł:
Tribological Properties of AlSi11-SiCp Composite Castings Produced by Pressure Die Casting Method
Autorzy:
Konopka, Z.
Pasieka, A.
Powiązania:
https://bibliotekanauki.pl/articles/379787.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
composites
pressure die casting
tribological properties
kompozyty
odlewnictwo ciśnieniowe
właściwości tribologiczne
Opis:
The measurement results concerning the abrasive wear of AlSi11-SiC particles composites are presented in paper. The method of preparing a composite slurry composed of AlSi11 alloy matrix and 10, 20% vol.% of SiC particles, as well as the method of its high-pressure die casting was described. Composite slurry was injected into metal mould of cold chamber pressure die cast machine and castings were produced at various values of the piston velocity in the second stage of injection, diverse intensification pressure values, and various injection gate width values. Very good uniform arrangement of SiC particles in volume composite matrix was observed and these results were publicated early in this journal. The kinetics of abrasive wear and correlation with SiC particles arrangement in composite matrix were presented. Better wear resistance of composite was observed in comparison with aluminium alloy. Very strong linear correlation between abrasive wear and particle arrangement was observed. The conclusion gives the analysis and the interpretation of the obtained results.
Źródło:
Archives of Foundry Engineering; 2014, 14, 3; 37-42
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Selected Tribological Properties of A390.0 Alloy
Autorzy:
Wieszała, R.
Piątkowski, J.
Powiązania:
https://bibliotekanauki.pl/articles/380094.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
tribological properties
friction coefficient
A390.0 alloy
właściwości tribologiczne
współczynnik tarcia
stop A390.0
Opis:
Emergence of new designs for internal combustion engines resulted in a necessity to search for new materials which will rise to excessive technological requirements under operating conditions of modern internal combustion engines of up to 150 kW. Focusing only on material properties, theoretically existing alloys should meet presents requirements. More importantly, existing materials are well fitted to the entire crank-piston system. Thus, there is a need for a more thorough examination of these materials. The paper presents studies on determination of coefficient of friction μ and wear for the A390.0 alloy modified with AlTi5B master alloy combined with EN GJL-350 cast iron. The characteristics of a T-11 tribological tester (pin on disc) used for the tests, as well as the methodology of the tribological tests, were described. Also, the analysis of the surface distribution of elements for the pin and the disc was presented. The studies were realized in order to find whether the analyzed alloy meets the excessive requirements for the materials intended for pistons of modern internal combustion engines. The results show that the A390.0 alloy can only be applied to a load of 1.4 MPa. Above this value was observed destructive wear, which results in the inability to use it in modern internal combustion engines.
Źródło:
Archives of Foundry Engineering; 2017, 17, 4; 175-178
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wear Resistance of Steel 20MnCr5 After Surfacing with Micro-jet Cooling
Autorzy:
Tarasiuk, W.
Piwnik, J.
Węgrzyn, T.
Sieteski, D.
Powiązania:
https://bibliotekanauki.pl/articles/380473.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
tribological properties
welding
micro-jet
steel 20MnCr5
właściwości tribologiczne
spawanie
mikrojety
stal 20MnCr5
Opis:
This paper presents results of experimental research concerning the impact of an innovative method of micro-jet cooling on the padding weld performed with MIG welding. Micro-jet cooling is a novel method patented in 2011. It enables to steer the parameters of weld cooling in a precise manner. In addition, various elements which may e.g. enhance hardness or alter tribological properties can be entered into its top surface, depending on the applied cooling gas. The material under study was steel 20MnCr5, which was subject to the welding process with micro-jet cooling and without cooling. Nitrogen was used as a cooling gas. The main parameter of weld assessment was wear intensity. The tests were conducted in a tribological pin-on-disc type position. The following results exhibit growth at approximately 5% in wear resistance of padding welds with micro-jet cooling.
Źródło:
Archives of Foundry Engineering; 2016, 16, 3; 121-124
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Badanie właściwości tribologicznych intermetali
Investigation of tribological properties of the intermetallics alloys
Autorzy:
Jasionowski, R.
Bryll, K.
Grabian, J.
Powiązania:
https://bibliotekanauki.pl/articles/382942.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
intermetal
stop Fe-Al
faza międzymetaliczna
zużycie cierne
właściwości tribologiczne
intermetallics alloy
Fe-Al alloy
intermetallic phase
wear abrasive
tribological properties
Opis:
W pracy przedstawiono wyniki badań właściwości tribologicznych wybranych intermetali w warunkach tarcia suchego. Określono wartość zużycia masowego badanych materiałów i żeliwnej przeciwpróbki. Przeprowadzono analizę mikroskopową zmian stanu powierzchni w celu identyfikacji mechanizmów zniszczenia intermetali.
The paper presents tribological tests results of the selected intermetallics alloys in the conditions of dry friction . Tribological properties of the intermetallics alloys was investigated by mass wear. The microscopic examinations of the samples of intermetallics alloys in order to identify mechanisms of destruction have been determined.
Źródło:
Archives of Foundry Engineering; 2012, 12, 1s; 87-90
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Tribological properties of Cu based composite materials strengthened with Al2O3 particles
Autorzy:
Kaczmar, J.
Granat, K.
Grodzka, E.
Kurzawa, A.
Powiązania:
https://bibliotekanauki.pl/articles/381312.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
metal matrix composite
copper
aluminium oxide particles
tribological properties
wear resistance
friction coefficient
Pin-on-disc tester
kompozyt metalowy
miedź
tlenek aluminium
właściwości tribologiczne
odporność na ścieranie
współczynnik tarcia
Opis:
In the present work copper was strenghtened with 20 and 30 vol. % of alumina particles characterized by diameter of 3-6μm. The copper based composite materials were manufactured by the squeeze casting method. Preheated preforms made from Al2O3 particles were placed in the desired place in the heated cast die and the squeeze casting process with liquid copper was performed applying the infiltration pressure of 90MPa and pressure was kept for 10-15s until solidification was complete. The microstructure and physical properties: Brinell hardness (HBW) and density were characterized. Metallografic examinations showed that alumina particles were uniformly distributed in the copper matrix. Hardness of 208 HBW for composite materials containing 30 vol.% of particles was achieved. Wear investigations were performed applying the tribological pin-on-disc tester. Friction forces between copper based composite materials containing 20 and 30 vol. % of Al2O3 particles and cast iron were registered and wear was determined on the base of the specimen mass loss after 1.0, 3.5 and 8.5 km friction distance.
Źródło:
Archives of Foundry Engineering; 2012, 12, 2s; 33-36
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of Casting Conditions on Tribological Properties of A390.0 Alloy
Autorzy:
Piątkowski, J.
Wieszała, R.
Gontarczyk, A.
Powiązania:
https://bibliotekanauki.pl/articles/379531.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
alloy Al-Si
silumin
grey cast iron
tribological properties
friction coefficient
casting conditions
heat removal
stop Al-Si
żeliwo szare
właściwości tribologiczne
współczynnik tarcia
warunki odlewania
odprowadzanie ciepła
Opis:
The paper presents tribological properties of A390.0 (AlSi17Cu5Mg) alloy coupled in abrasive action with EN-GJL-350 grey cast-iron. The silumin was prepared with the use of two different technologies which differed in terms of cooling speed. In the first case the alloy was modified with foundry alloy CuP10 and cast to a standard tester ATD and in case of second option the modified alloy was cast into steel casting die. Due to different speed of heat removal the silumins varied in structure, particularly with size of primary crystals of silicon and their distribution in matrix which had a significant influence of friction coefficient in conditions of dry friction.
Źródło:
Archives of Foundry Engineering; 2016, 16, 3; 95-98
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Microstructural and Tribological Characterization of Aluminium Bronzes with Additions of Si and Cr
Autorzy:
Pisarek, B. P.
Kowalski, B.
Atapek, H.
Polat, Ş.
Tüfekçi, T.
Powiązania:
https://bibliotekanauki.pl/articles/382034.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
innovative foundry technologies
innovative foundry materials
aluminium bronze
wear resistant
TDA method
microstructure
tribological properties
innowacyjne technologie odlewnicze
innowacyjne materiały odlewnicze
brąz aluminiowy
odporność na zużycie
metoda TDA
mikrostruktura
właściwości tribologiczne
Opis:
The article presents the investigation results of the crystallization (performed by means of the TDA method) and the microstructure of complex aluminium bronzes with the content of 6% Al, 4% Fe and 4% Ni, as well as Si additions in the scope of 1–2% and Cr additions in the scope of 0.1–0.3%, which have not been simultaneously applied before. For the examined bronze, the following tests were performed: hardness HB, impact strength (KU2). For bronze CuAl6Fe4Ni4Si2Cr0.3, characterizing in the highest hardness, wear tests were conducted with dry friction and the dry friction coefficient. The investigations carried out by means of the X-ray phase analysis demonstrated the following phases in the microstructure of this bronze: αCu, γ2 and complex intermetallic phases based on iron silicide type Fe3Si (M3Si M={Fe,Cr,…}). Compared to the normalized aluminium bronzes (μ=0.18–0.23), the examined bronze characterizes in relatively low wear and lower friction coefficient during dry friction (μ=0.147±0.016).
Źródło:
Archives of Foundry Engineering; 2018, 18, 1; 93-98
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Define the type of tribological wear of high speed steel remelted with the electric arc with the usage of the confocal microscope
Autorzy:
Dziedzic, A.
Powiązania:
https://bibliotekanauki.pl/articles/382857.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
obróbka cieplna
właściwości mechaniczne
metalografia
mikroskop konfokalny
stal szybkotnąca
przetapianie
łuk elektryczny
zużycie tribologiczne
heat treatment
mechanical features
metallography
confocal microscope
high-speed steel
remelting
electric arc
Opis:
The paper presents the possibility of the usage of the concfocal microscope for define the type of tribological wear present during the technical dry friction on the testing machine of the pin-on-disc T-01M. The pin was a remelted high-speed steel and the disc was made from sintered carbides. The surface layer of the high-speed steel was remelted with the electric arc with different parameters. The intensity of the electric arc current was changed, the scanning speed and the single, overlapping remeltings were used. On the basis of the 3D, 2D view of the surface friction of the pin (made from the remelted high-speed steel), disc (made from the sintered carbides) and the surface roughness profile run along the marked line, the presence of the abrasive wear can be defined with the description of the elementary wear processes due to the abrasive and/or adhesive wear.
Źródło:
Archives of Foundry Engineering; 2012, 12, 2; 153-158
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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