Temat: roughness of surface - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Analysis of surface topography of slide journal bearings and micro - bearings
Autorzy:: Miszczak, A.
Powiązania:: https://bibliotekanauki.pl/articles/247394.pdf
Data publikacji:: 2013
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: surface topography
atomic force microscope
static contact mode
height distributions of surface roughness
Opis:: In this paper, the author presents the results of measurements of the slide journal bearings and micro-bearings sleeves and journal surfaces. The study was performed with the atomic force microscope (AFM) NT-206. The results of measurements of surface topography are presented in the form of a 2D and 3D map of surface topography and also in the form of profiles for selected cross-sections of examined surfaces. Additionally, the height distributions of surface roughness are presented. The Atomic Force Micsroscope NT-206 allows investigating the surface of sample with maximum scanning area 32μm x 32μm and with the maximum value of roughness ±1μm. The measurements can be carried out in three modes: static (contact) mode, dynamic (non-contact) mode, dynamic intermittent mode. The author used the contact mode. The application of this mode of operation, in the case of samples with a hard surface, for example, the journal of a bearing, enables to obtain a good mapping of the measured surface. The presented in this paper results of surface topography measurements, include the calculated values of the Ra and Rq parameters and also the maximum value of the distance between the lowest and the highest surface inequality. The obtained results allow evaluating the amount and type of wear of researched elements in the micro-scale and they also are useful in the design of such surface layers of co-operating components, in order to obtain optimum tribological properties. When considering the impact of the surface roughness on the change of height of bearing gap, and consequently the change of flow and operating parameters, the information about average distribution of roughness value is required. With such measurements, it is possible to obtain these data. In the presented research the micro-bearings from personal computers hard drives, as well as classic bearings and sleeves, were investigated.
Źródło:: Journal of KONES; 2013, 20, 4; 285-292
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Impact of processing parameters on surface roughness and strain hardening of two-phase stainless steel
Autorzy:: Dyl, Tomasz Cyryl
Charchalis, Adam
Stradomski, Grzegorz
Rydz, Dariusz
Powiązania:: https://bibliotekanauki.pl/articles/242598.pdf
Data publikacji:: 2019
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: burnishing process
index of surface roughness reduction
degree of relative strain hardening
two-phase stainless steel
Opis:: Products used in the construction of machines and shipbuilding as well as petrochemical industry, such as shafts, bars, pipes and the like from two-phase stainless steel are currently very popular. It is required that they meet certain quality criteria. They must be characterized by suitable properties of the surface layer to meet the requirements of potential buyers. In the article impact of processing parameters on the degree of relative strain hardening and index of surface roughness reduction were presented. The burnishing process was carried out for two-phase stainless steel. Burnishing process of the shafts neck was performed using burnisher roller. The experimental research were obtained in the surface layer increase in hardness and the material ratio curve a convex shaped, which, taking into account the load capacity of the surface will be directly affected by its resistance to wear and corrosion. The experimental research by application of the burnishing process was made in the Laboratory of Production Engineering. After the studies it was found that the hardness of the surface layer and the roughness of the shaft necks an important influenced by technological parameters of processing (burnishing speed, feed rate and depth of burnishing). The objective of applying burnishing process may be, for example, the need to increase surface smoothness and dimensional accuracy of part.
Źródło:: Journal of KONES; 2019, 26, 2; 37-44
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Analysis of the burnishing process testing by the methods – BRP
Autorzy:: Dyl, T. C.
Powiązania:: https://bibliotekanauki.pl/articles/247792.pdf
Data publikacji:: 2016
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: burnishing rolling–pressuring process
BRP
degree of relative strain hardening
surface roughness reduction ratio
surface layer
Opis:: The paper presents choice results of experimental testing of burnishing process by methods BRP – burnishing rolling – pressuring. The burnishing process is a technology of surface plastic forming of machine parts. The plastic deformations are called out by arrangement of strengths causing the superficial crossing the value of tension pressure of the materials. They set the on cold causing except moving the unevenness also the cold work in top layer of workpiece. Studies were conducted for burnishing process of the external cylindrical surfaces. Burnishing carried out for stainless steels. Burnishing technology was proposed using burnished roller (BR-01) in order to give adequate operational characteristics of the shafts neck centrifugal pumps. An important issue to resolve in the article of the research was to obtain appropriate technological quality, and because of the economic aspect of the production and regeneration of machine parts, burnishing applied in exchange for abrasive processing. In experimental studies were obtained in the surface layer increase in hardness and the Abbott-Firestone curve a convex shaped, which given load capacity of the surface will be directly affected by its resistance to wear and corrosion. The burnishing rolling – pressuring process (BRP) were decreased in surface roughness of the top outer cylindrical layer of stainless steel, which can be applied to the centrifugal pump shafts ship.
Źródło:: Journal of KONES; 2016, 23, 3; 121-126
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: The burnishing process of the stainless steel in aspect of the reduction roughness and surface hardening
Autorzy:: Dyl, T. C.
Powiązania:: https://bibliotekanauki.pl/articles/246904.pdf
Data publikacji:: 2017
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: burnishing rolling–pressuring process
BRP
surface roughness reduction ratio
degree of relative strain hardening
stainless steel
Opis:: In the article were presented influence of technological parameters of burnishing process on the degree of hardness and reduction roughness. Burnishing process carried out for stainless steels X2CrNiMo17-12-2. The experimental research were obtained in the surface layer increase in hardness and the material ratio curve a convex shaped, which, taking into account the load capacity of the surface will be directly affected by its resistance to wear and corrosion. The experimental research by application of the burnishing rolling – pressuring process (BRP) method were made in the Laboratory of Production Engineering at the Department of Marine Maintenance at the Faculty of Marine Engineering at the Gdynia Maritime University. After the studies it was found that the hardness of the surface layer and the roughness of the shaft necks an important influenced by technological parameters of processing (burnishing speed, feed and depth of burnishing). The objective of applying burnishing process may be, for example, the need to increase surface smoothness and dimensional accuracy of part. To achieve the objectives strengthen and smooth of burnishing stainless steel should be used the one pass burnisher roller and feed fn = 0.2 mm/rev and disk burnishing tool feed an = 1.0 mm and burnishing speed vn = 70 m/min.
Źródło:: Journal of KONES; 2017, 24, 3; 63-69
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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