Temat: surface plastic forming - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: The experimental analysis of the burnishing process using the methods : NPS
Autorzy:: Dyl, T. C.
Powiązania:: https://bibliotekanauki.pl/articles/245624.pdf
Data publikacji:: 2016
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: ballizing process
steel tube holes
surface plastic forming
roughness surface
Opis:: The paper presents selected results of experimental research of burnishing process of the steel tube holes. The ballizing process (NPS) is the method of burnishing where consists of pushing the tool through the hole, wherein the ball is greater in size than the opening of the value of the reduction ratio. Used tools to burnishing are hard and smooth surface. Burnishing elements are made of shape: ball, roll and disk. The ballizing process is carry out by a ball. The precise tube holes are made mostly methods abrasive machining. Machining these methods can usually maintain a within the tolerances established by the constructor size and shape and surface roughness. However, not achieved a satisfactory state surface layer of tube holes. Improve the properties of the surface layer can be obtained after application, as finishing, the slide burnishing. Modelling of the burnishing process using the method, NPS is to determine the impact of a specific curvature a rigid tool with of the workpiece. Ballizing process can increase the dimensional accuracy of tube holes, reducing the surface roughness, the strengthening of the surface layer, compressive residual stresses constitution. Compressive internal stresses substantially influence the fatigue life of machine parts. The aim of experimental research was to obtain surface layer state of compressive residual stress and the material ratio curve of convexity shape.
Źródło:: Journal of KONES; 2016, 23, 1; 107-113
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Effect of relative strain ratio on the reduce roughness surface layer tube holes after burnishing process
Autorzy:: Dyl, T.
Powiązania:: https://bibliotekanauki.pl/articles/247905.pdf
Data publikacji:: 2012
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: surface plastic forming
burnishing broaching process
tube holes
roughness surface
Opis:: Burnishing technology is a technology of surface plastic forming of machine parts. The paper presents experimental research of burnishing process of the steel tube holes. Used tools to burnishing technology are hard and smooth surface. Burnishing elements are of ball, roll and disk. Burnishing be flat surfaces, and cylindrical shape. Burnished surfaces are cylindrical outer and inner. Because of the type of the force can be divided into static and dynamic burnishing. Due to the kinematics can be divided into sliding and roller burnishing. Occurrence of moving parts in direct contact with the material qualifies for the group process of burnishing rolling. The sliding burnishing design element property is part of the work surface burnished permanently attached to the handle. Burnishing is used as a finishing strengthens and smoothness can be realized on the universal machine tools and machining centres, effectively replaces the machining operations, such as grinding, reaming, honing and lapping. The precise tube holes are made mostly methods abrasive machining. Machining these methods can usually maintain a within the tolerances established by the constructor size and shape and surface roughness. However, there is not achieved a satisfactory state surface layer of tube holes. Improve the properties of the surface layer can be obtained after application, as finishing, broaching the slide burnishing. It consists in pushing through the machined hole tool in the shape of a sphere or a special plunger mandrel. After burnishing broaching is increased diameter, reduced roughness surface and improve the physical properties work piece surface layer of the tube holes. Burnishing broaching process can increase the dimensional accuracy of tube holes, reducing the surface roughness, the strengthening of the surface layer, compressive residual stresses constitution. Compressive internal stresses substantially influence the fatigue life of machine parts. A burnishing broaching is carry out by a ball. In the paper presents results measurements roughness and impact of the relative strain ratio on the surface layer after burnishing broaching process.
Źródło:: Journal of KONES; 2012, 19, 2; 137-143
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: The Numerical and Experimental Analysis of Ballizing Process of Steel Tubes
Autorzy:: Dyl, T.
Powiązania:: https://bibliotekanauki.pl/articles/356697.pdf
Data publikacji:: 2017
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: numerical analysis
strain and stress state
burnishing (surface plastic forming)
ballizing process
steel tubes
Opis:: This paper presents chosen results of experimental and numerical research of ballizing process of the steel tubes. Ballizing process is a method of burnishing technology of an internal diameter by precisely forcing a ball through a slightly undersized premachined tubes. Ballizing process is a fast, low-cost process for sizing and finishing tubes. It consists of pressing a slightly oversized ball through an unfinished tube to quickly bring the hole to desired size. The ball is typically made from a very hard material such as tungsten carbide or bearing steel. Ballizing process is by cold surface plastic forming of the surface structure, thereby leaving a layer of harder material and reducing its roughness. After theoretical and experimental analysis it was determined that the smaller the diameter of the balls, the bigger intensity of stress and strain and strain rate. The paper presents influence of ballizing process on the strain and stress state and on the surface roughness reduction rate of the steel tubes.
Źródło:: Archives of Metallurgy and Materials; 2017, 62, 2A; 807-814
1733-3490
Pojawia się w:: Archives of Metallurgy and Materials
Dostawca treści:: Biblioteka Nauki

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