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Wyszukujesz frazę "Grzesik, M" wg kryterium: Autor


Wyświetlanie 1-4 z 4
Tytuł:
Investigation of Initial Wear Period of Differently Coated Carbide Cutting Tools
Autorzy:
Bartoszuk, M.
Grzesik, W.
Powiązania:
https://bibliotekanauki.pl/articles/99561.pdf
Data publikacji:
2015
Wydawca:
Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:
orthogonal cutting
coatings
tool wear
stainless steel
Opis:
In this paper the results of experimental studies concerning the phenomenon of initial period of the wear of differently coated sintered carbide tools when dry orthogonal cutting of an AISI 321 austenitic stainless steel are presented. The motivation for this study results from the lack of technological guides concerning the optimal choice of coated cutting tools for machining of corrosion resistant austenitic stainless steels. A number of cutting tool inserts with the plane rake face made of a fine H10F sintered carbide substrate with specially deposited TiN, including TiCN, TiAlN, AlTiN and AlCrN single layers were used in wear tests. Both rake and flank faces of the cutting inserts were examined by optical and confocal microscopy after controlled tool wear. The possible wear mechanisms in terms of changes of the tool-chip contact were investigated.
Źródło:
Journal of Machine Engineering; 2015, 15, 4; 37-45
1895-7595
2391-8071
Pojawia się w:
Journal of Machine Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of surface roughness on bearing steel parts after cutting, superfinishing and burnishing operations
Autorzy:
Neslusan, M.
Grzesik, W.
Żak, K.
Powiązania:
https://bibliotekanauki.pl/articles/99566.pdf
Data publikacji:
2012
Wydawca:
Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:
hard turning
CBN tool burnishing
superfinishing
surface roughness
Opis:
The different technological operation can form the variety of surface with the different functionality. In this paper the surface texture produced by hard turning of a quenched 100Cr6 steel of 62-64 HRC hardness using mixed ceramic (MC) tools and subsequent superfinishing and multipass burnishing operations is characterized by means of a number of roughness parameters. Both conventional and wiper MC cutting tool inserts were employed. The main objective of this study is to improve service properties of the turned surfaces of bearing parts by additional removal and non-removal treatments in order to obtain smoother surfaces with lower surface roughness and better bearing characteristics.
Źródło:
Journal of Machine Engineering; 2012, 12, 1; 111-118
1895-7595
2391-8071
Pojawia się w:
Journal of Machine Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Surface integrity of hard turned parts modified by ball burnishing
Autorzy:
Grzesik, W.
Żak, K.
Prażmowski, M.
Powiązania:
https://bibliotekanauki.pl/articles/99946.pdf
Data publikacji:
2012
Wydawca:
Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:
hard turning
CBN tool
burnishing
surface roughness
surface integrity
Opis:
The purpose of this research is to test the applicability of ball burnishing for improving surface integrity produced in hard machining on parts made of high-strength, low alloy 41Cr4 steel with hardness of about 57 HRC. Machined surfaces were characterized using 2D and 3D scanning techniques. Moreover, the distribution of microhardness beneath the surface was determined and the microstucture of the sublayer was examined using SEM/EDS technique. This investigation confirms that ball burnishing allows producing surfaces with acceptable surface roughness and better service properties. The main conclusion is that this sequential technology can partly eliminate grinding operations when hard machining is not enough to produce the desired surface integrity.
Źródło:
Journal of Machine Engineering; 2012, 12, 1; 18-27
1895-7595
2391-8071
Pojawia się w:
Journal of Machine Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of mechanical characteristics of face milling process of Ti6AI4V alloy using experimental and simulation data
Autorzy:
Nieslony, P.
Grzesik, W.
Bartoszuk, M.
Habrat, W.
Powiązania:
https://bibliotekanauki.pl/articles/99589.pdf
Data publikacji:
2016
Wydawca:
Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:
FEM simulation
milling process
titanium alloy
cutting forces
Opis:
This paper presents experimental and 3D FEM simulation results obtained for the Johnson-Cook material constitutive model and variable cutting conditions. Face milling tests were carried out using a Ti6Al4V titanium alloy as the workpiece and coated carbide indexable inserts. CAD models of the cutting tool insert and the face milling head were generated and implemented into FEM package used. The machining conditions were selected based on real production data from aerospace sector. In particular, changes of power and specific cutting energy were analyzed in terms of the rotation angle of the milling head and the ratio of the uncut chip thickness against the cutting edge radius.
Źródło:
Journal of Machine Engineering; 2016, 16, 3; 58-66
1895-7595
2391-8071
Pojawia się w:
Journal of Machine Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-4 z 4

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