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Wyświetlanie 1-15 z 22
Tytuł:
The influence of cutting inserts geometric on surface roughness of steel applied to sea water pump shafts
Autorzy:
Labuda, W.
Powiązania:
https://bibliotekanauki.pl/articles/244988.pdf
Data publikacji:
2015
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
turning dynamometer
surface roughness parameters
stainless steel
marine pump shaft
Opis:
One of the greatest problems of modern production techniques is the achievement of an appropriate quality at minimal costs and accompanied by the production efficiency increase. Therefore, while designing the production process, the technology used should have a considerable influence on the durability and reliability of machine parts to be produced. During finish treatment, the final dimensions as well as functional properties are imparted to a given element by application of proper treatment type. The engineer has a range of production techniques to choose for the proper surface layer formation. It is crucial to find a suitable solution which will meet the requirements as well as the work conditions of a given machine part. The article presents the research results of pump shaft pins finish turning. The research was performed on a roller 60 mm in diameter made of X5CrNi18-10 steel. The finish tooling of pump shaft pins was carry out on a universal CDS 6250 BX-1000 centre lathe. The finish lathing process was carried out by means of Sandvik Coromant cutting tool with replaceable inserts. In the research of lathing process used standard inserts (MF), inserts with increased tolerance (UM) and inserts with Wiper technology (WF). During lathing, the optimal machining parameters were used. The cutting process was performed at entering angle of 90°. The process of lathing used cutting tool dynamometer DKM 2010. During the research, the effect of cutting insert geometric and optimal cutting parameters on the surface roughness of steel applied to marine pumps shaft pins was determined.
Źródło:
Journal of KONES; 2015, 22, 3; 133-140
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ocena parametrów chropowatości powierzchni toczonych otworów w kołach zębatych obrabianych nagniataniem
Evaluation of surface roughness parameters of turned gear wheels holes machined by ball burnishing
Autorzy:
Dobrzyński, M.
Przybylski, W.
Waszczur, P.
Powiązania:
https://bibliotekanauki.pl/articles/189882.pdf
Data publikacji:
2011
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
toczenie na twardo
nagniatanie
parametry chropowatości powierzchni
hard part turning
burnishing
surface roughness parameters
Opis:
W artykule zaprezentowano wyniki z badań eksperymentalnych dotyczących przygotowania powierzchni do obróbki wykończeniowej nagniataniem. Badania dotyczyły obróbki materiałów w stanie utwardzonym po hartowaniu. Analizowano wpływ parametrów toczenia na twardo na uzyskiwane wartości parametrów chropowatości powierzchni jako wejściowych przed procesem nagniatania.
The paper presents the results of experimental studies of surface preparation for burnishing process. The study is concerned with machining of hard parts. The influence of hard turning parameters on obtained surface roughness rates is analysed as the input factor of burnishing process.
Źródło:
Tribologia; 2011, 6; 61-68
0208-7774
Pojawia się w:
Tribologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Research on the correlation between the porosity of plant granular materials and the selected parameters of surface texture
Badania nad korelacją porowatości sypkich materiałów roślinnych z wybranymi parametrami warstwy wierzchniej
Autorzy:
Wojcik, A.
Frączek, J.
Powiązania:
https://bibliotekanauki.pl/articles/971350.pdf
Data publikacji:
2016
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
3D scanning
surface roughness parameters
granular materials
skanowanie 3D
topografia powierzchni
materiały sypkie
Opis:
The issues concerning porosity of granular materials, especially plant materials, are considered very important matters in respect of their transport, storage, precise dosing, and tribological properties. The classic method of measuring porosity requires specialized equipment and takes time, thus often being of little use in dynamic production processes. Therefore, there is a growing need for developing new methods for fast porosity measurement. In the article, the authors present an attempt to define a correlation between the selected parameters of the surface texture of plant granular materials and their porosities. To digitize the surface, an optical 3D scanner and specialized software for analysis of the surface topography were used. The results should provide a basis for the development of innovative methods for measuring porosity based on digital image processing (DIA).
Zagadnienia porowatości materiałów sypkich, w tym w szczególności materiałów roślinnych, są bardzo istotnym elementem związanym z ich transportem, przechowywaniem, precyzyjnym dozowaniem. Klasyczne metody pomiaru tej porowatości wymagają specjalistycznej aparatury i są czasochłonne, a zatem często są mało przydatne w dynamicznych procesach produkcyjnych. Istotne staje się więc opracowanie nowych metod szybkiego pomiaru porowatości. W artykule autorzy przedstawiają próbę określenia korelacji wybranych parametrów warstwy wierzchniej złoża sypkich materiałów roślinnych z jego porowatością. Do akwizycji złoża wykorzystano skaner optyczny 3D oraz specjalistyczne oprogramowanie do analizy topografii powierzchni. Uzyskane wyniki powinny dać podstawę do opracowania innowacyjnej metody pomiaru porowatości opartej o Digital Image Analysis (DIA).
Źródło:
Tribologia; 2016, 270, 6; 179-189
0208-7774
Pojawia się w:
Tribologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A comparison between profile and areal surface roughness parameters
Autorzy:
He, Baofeng
Ding, Siyuan
Shi, Zhaoyao
Powiązania:
https://bibliotekanauki.pl/articles/1849053.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
profile surface roughness
areal surface roughness
filtration techniques
evaluation parameters
Opis:
Surface roughness has an important influence on the service performance and life of parts. Areal surface roughness has the advantage of accurately and comprehensively characterizing surface microtopography. Understanding the relationship and distinction between profile and areal surface roughness is conducive to deepening the study of areal surface roughness and improving its application. In this paper, the concepts, development, and applications of surface roughness in the profile and the areal are summarized from the aspect of evaluation parameters. The relationships and differences between surface roughness in the profile and the areal are analyzed for each aspect, and future development trends are identified.
Źródło:
Metrology and Measurement Systems; 2021, 28, 3; 413-438
0860-8229
Pojawia się w:
Metrology and Measurement Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A comparison between profile and areal surface roughness parameters
Autorzy:
He, Baofeng
Ding, Siyuan
Shi, Zhaoyao
Powiązania:
https://bibliotekanauki.pl/articles/1849106.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
profile surface roughness
areal surface roughness
filtration techniques
evaluation parameters
Opis:
Surface roughness has an important influence on the service performance and life of parts. Areal surface roughness has the advantage of accurately and comprehensively characterizing surface microtopography. Understanding the relationship and distinction between profile and areal surface roughness is conducive to deepening the study of areal surface roughness and improving its application. In this paper, the concepts, development, and applications of surface roughness in the profile and the areal are summarized from the aspect of evaluation parameters. The relationships and differences between surface roughness in the profile and the areal are analyzed for each aspect, and future development trends are identified.
Źródło:
Metrology and Measurement Systems; 2021, 28, 3; 413-438
0860-8229
Pojawia się w:
Metrology and Measurement Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A comparison between profile and areal surface roughness parameters
Autorzy:
He, Baofeng
Ding, Siyuan
Shi, Zhaoyao
Powiązania:
https://bibliotekanauki.pl/articles/1849009.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
profile surface roughness
areal surface roughness
filtration techniques
evaluation parameters
Opis:
Surface roughness has an important influence on the service performance and life of parts. Areal surface roughness has the advantage of accurately and comprehensively characterizing surface microtopography. Understanding the relationship and distinction between profile and areal surface roughness is conducive to deepening the study of areal surface roughness and improving its application. In this paper, the concepts, development, and applications of surface roughness in the profile and the areal are summarized from the aspect of evaluation parameters. The relationships and differences between surface roughness in the profile and the areal are analyzed for each aspect, and future development trends are identified.
Źródło:
Metrology and Measurement Systems; 2021, 28, 3; 413-438
0860-8229
Pojawia się w:
Metrology and Measurement Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Applicability of selected groups of roughness parameters for description of surface layer of flat-top “plateau” structures
Autorzy:
Kowalski, M.
Wiśniewska, M.
Karolczak, P.
Stancekova, D.
Powiązania:
https://bibliotekanauki.pl/articles/957943.pdf
Data publikacji:
2016
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
roughness parameters
flat-top “plateau” surface
honing
Opis:
The aim of this study is to determine the usefulness of selected 2D roughness parameters for detecting changes of geometric features and the rate the quality of the surface generated in the process of honing combustion engines sleeves. The paper presents the importance of mathematical modeling of virtual surface topography with different participation of determined and random factor. The possibilities of modeling the flat-top “plateau” surface roughness characteristic for honed surface was showed. Suitability of application of the roughness parameter for description of the selected variable characteristics of roughness profiles were determined using the correlation coefficient and the additional evaluation index designated as t. Indicator t was used for comparing the percentage change of the tested value of modeled profile characteristics with changes selected for evaluation of the roughness parameters 2D.
Źródło:
Advances in Science and Technology. Research Journal; 2016, 10, 32; 32-39
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Metrological Aspects of Surface Topographies Produced by Different Machining Operations Regarding Their Potential Functionality
Autorzy:
Żak, K.
Grzesik, W.
Powiązania:
https://bibliotekanauki.pl/articles/220573.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
surface metrology
surface topography
surface roughness
areal parameters
machining operations
Opis:
This paper presents a comprehensive methodology for measuring and characterizing the surface topographies on machined steel parts produced by precision machining operations. The performed case studies concern a wide spectrum of topographic features of surfaces with different geometrical structures but the same values of the arithmetic mean height Sa. The tested machining operations included hard turning operations performed with CBN tools, grinding operations with Al2O3 ceramic and CBN wheels and superfinish using ceramic stones. As a result, several characteristic surface textures with the Sa roughness parameter value of about 0.2 μm were thoroughly characterized and compared regarding their potential functional capabilities. Apart from the standard 2D and 3D roughness parameters, the fractal, motif and frequency parameters were taken in the consideration.
Źródło:
Metrology and Measurement Systems; 2017, 24, 2; 325-335
0860-8229
Pojawia się w:
Metrology and Measurement Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The influence of the conditions of emulsion mist formation on the surface roughness of AISI 1045 steel after finish turning
Autorzy:
Feldshtein, E.
Józwik, J.
Legutko, S.
Powiązania:
https://bibliotekanauki.pl/articles/102881.pdf
Data publikacji:
2016
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
surface roughness
turning
cutting parameters
emulsion mist
Opis:
The processes of machining have vital influence on the operating properties of machine parts because they ensure the formation of the required geometrical structure of the working surfaces and the condition of the top layer. In this paper the influence of emulsion mist parameters on Ra, Rz and RSm surface roughness parameters is described when finishing the turning of C45 carbon steel. It was found that cutting parameters have considerably greater influence on roughness parameters in comparison with emulsion mist conditions. When increasing cutting speed from 100 to 300 m/min Ra and Rz values decrease nearly 2 times, but RSm value does not depend on speed. When increasing feed rate from 0.1 to 0.2 mm/rev Ra, Rz and RSm values increase more than twice. Changes of emulsion mass flow and compressed air flow affect roughness parameters reach 9–15% of maximum. It was shown that Parameter Space Investigation method can be used efficiently for quick analysis of tested parameters and optimization of their values.
Źródło:
Advances in Science and Technology. Research Journal; 2016, 10, 30; 144-149
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The experimental investigation of surface roughness after dry turning of steel S235
Autorzy:
Molenda, Justyna
Powiązania:
https://bibliotekanauki.pl/articles/245799.pdf
Data publikacji:
2019
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
dry turning
turning parameters
turning results
surface roughness
arithmetic average surface roughness value
Opis:
Nowadays lot of scientific work inspired by industry companies was done with the aim to avoid the use of cutting fluids in machining operations. The reasons were ecological and human health problems caused by the cutting fluid. The most logical solution, which can be taken to eliminate all of the problems associated with the use of cooling lubricant, is dry machining. In most cases, however, a machining operation without lubricant finds acceptance only when it is possible to guarantee that the part quality and machining times achieved in wet machining are equalled or surpassed. Surface finish has become an important indicator of quality and precision in manufacturing processes and it is considered as one of the most important parameter in industry. Today the quality of surface finish is a significant requirement for many workpieces. Thus, the choice of optimized cutting parameters is very important for controlling the required surface quality. In the present study, the influence of different machining parameters on surface roughness has been analysed. Experiments were conducted for turning, as it is the most frequently used machining process in machine industry. All these parameters have been studied in terms of depth of cut (ap), feed rate (f) and cutting speed (vc). As workpiece, material steel S235 has been selected. This work presents results of research done during turning realised on conventional lathe CDS 6250 BX-1000 with severe parameters. These demonstrate the necessity of further, more detailed research on turning process results.
Źródło:
Journal of KONES; 2019, 26, 4; 179-184
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Diagnostics of workpiece surface condition based on cutting tool vibrations during machining
Autorzy:
Józwik, J.
Mika, D.
Powiązania:
https://bibliotekanauki.pl/articles/102959.pdf
Data publikacji:
2015
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
vibration
diagnostics
machining
turning
surface geometric structure
roughness parameters
Opis:
The paper presents functional relationships between surface geometry parameters, feedrate and vibrations level in the radial direction of the workpiece. Time characteristics of the acceleration of cutting tool vibration registered during C45 steel and stainless steel machining for separate axes (X, Y, Z) were presented as a function of feedrate f. During the tests surface geometric accuracy assessment was performed and 3D surface roughness parameters were determined. The Sz parameter was selected for the analysis, which was then collated with RMS vibration acceleration and feedrate f. The Sz parameter indirectly provides information on peak to valley height and is characterised by high generalising potential i.e. it is highly correlated to other surface and volume parameters of surface roughness. Test results presented in this paper may constitute a valuable source of information considering the influence of vibrations on geometric accuracy of elements for engineers designing technological processes.
Źródło:
Advances in Science and Technology. Research Journal; 2015, 9, 26; 57-65
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The influence of changing of treatment condition on surface roughness parameter during turning process by wiper insert
Autorzy:
Labuda, Wojciech
Powiązania:
https://bibliotekanauki.pl/articles/243562.pdf
Data publikacji:
2019
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
finish turning process
surface roughness parameter
cutting parameters
stainless steel
Opis:
One of the greatest problems of modern production techniques is the achievement of an appropriate quality at minimal costs and accompanied by the production efficiency increase. Therefore, while designing the production process. The technology used should have a considerable influence on the durability and reliability of machine parts to be produced. During finish treatment, the final dimensions as well as functional properties are imparted to a given element by application of proper treatment type. The engineer has a range of production techniques to choose for the proper surface layer formation. It is crucial to find a suitable solution which will meet the requirements as well as the work conditions of a given machine part. The article presents the results of influence of change of cutting parameters on surface roughness parameter during turning process of stainless steel. A shaft made of 304L stainless steel was used for the research. The chemical composition of steel was measured by Solaris-ccd plus optical spectrometer. The cutting process was carried out on a universal CDS 6250 BX-1000 centre lathes. Measurement of surface roughness was carried out by T8000 profilometer. The turning process was conducted by a cutting tool with Wiper insert. During the turning, the following machining parameters were used: cutting speed Vc [m/min], feed f [mm/rev], cutting depth ap [mm] and additionally changed nose radius r [mm], and tool cutting edge angle ϰr [º]. The results of measurements of Ra parameter underwent statistic analysis. The calculations were conducted by Statistica software.
Źródło:
Journal of KONES; 2019, 26, 1; 81-88
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Assessment of surface roughness in MQL assisted turning process of titanium alloy with application of TOPSIS-AHP method
Autorzy:
Bartoszuk, M.
Gupta, M. K.
Powiązania:
https://bibliotekanauki.pl/articles/99597.pdf
Data publikacji:
2018
Wydawca:
Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:
titanium alloy
turning parameters
optimization
surface roughness
minimum quantity lubrication
Opis:
The optimization of surface roughness values considered as one of the most significant issues regarding turning process of titanium alloys with the use of minimum quantity lubrication (MQL) method. With such an aim in mind, the application of TOPSIS-AHP method is implemented in order to establish the most favourable cutting parameters for the following values of surface roughness: Ra, Rq and Rz in machining of titanium alloys regarding MQL conditions. The proposed methodology consists of the two stages. At the beginning, tests on turning process were performed on CNC lathe, taking feed rate, approach angle, and cutting speed as input parameters. Then, the TOPSIS-AHP method was applied on the given experimental data and the optimum machining parameters were determined. The findings from current investigations showed that, lower values of cutting speed, feed rate and middle value of approach angle shows the optimal results.
Źródło:
Journal of Machine Engineering; 2018, 18, 2; 97-105
1895-7595
2391-8071
Pojawia się w:
Journal of Machine Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evaluation of 2D and 3D Surface Roughness of Die Castings from Alloy AlSi9Cu3
Autorzy:
Pałyga, Ł.
Stachowicz, M.
Granat, K.
Powiązania:
https://bibliotekanauki.pl/articles/382625.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
die casting
roughness
surface parameters
SEM
odlewnictwo ciśnieniowe
chropowatość
parametry powierzchniowe
Opis:
This paper presents the possibility of evaluating the 3D surface roughness of a raw die castings made from alloy AlSi9Cu3, group EN AB- 46000. Castings were produced on BUHLER H630-B die casting machine with various piston speed. The study was conducted on casting bracket for seatbacks office chair, whose surface do not require further machining to obtain adequate surface quality. In order to reduce the impact of possible surface mold roughness wear, the specimen has been taken from the places furthest away from the supply system. Evaluates of 3D surface roughness of specimens was performed on specialized software delivered with scanning electron microscope. After conducting a series of test on surface topography was evaluated roughness of raw castings produced with variable parameters of process control, such as piston speed during II Phase. It was found that the method used to measure 2D and 3D roughness parameters could be more practical in evaluating the quality of die castings, but it should be combined with the way their manufacturing and other destructive and non-destructive evaluation.
Źródło:
Archives of Foundry Engineering; 2015, 15, 1 spec.; 75-80
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Experimentation and Prediction of the Wear of a Cutting Tool in Turning Process
Autorzy:
Merzoug, M.
Benamara, N.
Boulenouar, A.
Bouchouicha, B.
Mazari, M.
Powiązania:
https://bibliotekanauki.pl/articles/356451.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
turning
cutting parameters
tool wear
surface roughness
design of experiments
Opis:
In the present work, the performance of multilayer coated carbide tool was investigated considering the effect of cutting parameters during turning of 34CrMo4 Low alloy steel. It has high strength and creep strength, and good impact tenacity at low temperature. It can work at –110°C to 500°C. And EN 10083-1 34CrMo4 owns high static strength, impact tenacity, fatigue resistance, and hardenability; without overheating tendencies. The objective functions were selected in relation to the parameters of the cutting process: surface roughness criteria. The correlations between the cutting parameters and performance measures, like surface roughness, were established by multiple linear regression models. Highly significant parameters were determined by performing an Analysis of variance (ANOVA). During the experiments flank wear, cutting force and surface roughness value were measured throughout the tool life. The results have been compared with dry and wet-cooled turning. Analysis of variance factors of design and their interactions were studied for their significance. Finally, a model using multiple regression analysis between cutting speed, fee rate and depth of cut with the tool life was established.
Źródło:
Archives of Metallurgy and Materials; 2018, 63, 2; 563-573
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
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