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Wyświetlanie 1-3 z 3
Tytuł:
Surface microhardening studies on steels after high feed milling
Autorzy:
Petrů, Jana
Zlámal, Tomáš
Špalek, František
Čep, Robert
Powiązania:
https://bibliotekanauki.pl/articles/102402.pdf
Data publikacji:
2018
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
surface integrity
microhardness
high speed machining
integralność powierzchni
mikrotwardość
obróbka z dużą prędkością
Opis:
The paper deals with the impact of high-speed machining production methods on the integrity of component surfaces. One has to point out that cutting conditions during machining have a significant impact on the final properties of surface and subsurface layers of the workpiece. The conclusion summarizes and analyzes the achieved results of experimental activities on stainless austenitic steel 1.4301, hardened tool steel 1.2343 and high-speed steel 1. 3344 (ASP 2023). The results of the work experimental parts demonstrate the influence of cutting parameters on selected surface integrity ones, specifically strengthening the surface and subsurface layers. The performed experiments show that microhardness of a surface layer of the machined material can be influenced by suitable cutting conditions and other cutting process parameters.
Źródło:
Advances in Science and Technology. Research Journal; 2018, 12, 2; 222-230
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Formation of Surface Topography During Turning of AISI 1045 Steel Considering the Type of Cutting Edge Coating
Autorzy:
Szczotkarz, Natalia
Maruda, Radosław W.
Dębowski, Daniel
Leksycki, Kamil
Wojciechowski, Szymon
Khanna, Navneet
Królczyk, Grzegorz M.
Powiązania:
https://bibliotekanauki.pl/articles/2023489.pdf
Data publikacji:
2021
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
turning
surface topography
dry machining
titanium coating
AISI 1045 steel
toczenie
topografia powierzchni
obróbka na sucho
powłoka tytanowa
stal AISI 1045
Opis:
The paper presents evaluation of the surface topography obtained after turning of AISI 1045 steel with the use of cemented carbide tools diversified in terms of applied titanium-based coatings. During the research, three types of coatings deposited with the PVD method on a P25 sintered carbide insert were compared: nitride-titanium TiN, nitride-aluminum-titanium TiAlN and carbon-titanium TiC in a wide range of variable cutting speeds 125 - 325 m/min and variable feeds 0.05 - 0.25 mm/rev. The quality of the machined surface was assessed on the Sensofar S neox System optical profile meter using the confocal method. The paper presents the results of 3D parameters, contour maps, isometric views and material ratio curves. The surface topography analysis showed that for the TiAlN coated insert, lower surface roughness parameters were observed in the range of lower cutting speeds and higher feeds, while for higher cutting speeds, lower values of the selected 3D parameters were found for the insert with TiC coating. For the insert with TiC coating, the most even distribution of the valleys and ridges of the machined surface roughness was also observed. The research results determined the range of cutting parameters that allow the selection of the appropriate type of titanium-based coating when machining AISI 1045 steel.
Źródło:
Advances in Science and Technology. Research Journal; 2021, 15, 4; 253-266
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of Distilled Water and Kerosene as Dielectrics on Machining Rate and Surface Morphology of Al-6061 During Electricdischarge Machining
Autorzy:
Arshad, Rubab
Mehmood, Shahid
Shah, Masood
Imran, Muhammad
Qayyum, Faisal
Powiązania:
https://bibliotekanauki.pl/articles/102557.pdf
Data publikacji:
2019
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
aluminium alloy 6061 T6
dielectric
electric discharge machining
electrode
surface morphology
stop aluminium 6061 T6
dielektryk
obróbka elektroerozyjna
elektroda
morfologia powierzchni
Opis:
Electric Discharge Machining (EDM) is widely used for manufacturing complex metal parts. The machining parameters like dielectric fluid, electrode material, current, voltage and pulse rate during EDM are controlled to obtain desired Material Removal Rate (MRR) and it also affects the surface morphology of manufactured components. In this research, effect of changing machining parameters, dielectric fluid (distilled water and kerosene) and electrode materials (copper and graphite) on surface morphology of Al 6061 T6 alloy during EDM is investigated. It is observed that the distilled water reacts with the molten aluminum and produces deep pits / voids on the surface due to liberation of hydrogen gas. A micro crack network is seen radiating from the edge of these pits. It is believed that the very high thermal conductivity of distilled water is responsible for the micro crack network and reduced material removal rate when compared with non-reactive kerosene oil.
Źródło:
Advances in Science and Technology. Research Journal; 2019, 13, 3; 162-169
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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