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1
Content available Visual Testing of Castings Defects after Vibratory Machining
Bańkowski D., Młynarczyk P.
Archives of Foundry Engineering
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2020
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Vol. 20, iss. 4
72--76
EN
The paper presents an example of the application of vibratory machining for castings based on the results of visual testing. The purpose of the work is to popularize non-destructive testing and vibratory machining as finishing process, especially in the case of cast objects. Visual testing is one of the obligatory non-destructive tests used for castings and welded joints. The basic requirements concerning the dimensional accuracy and surface texture of cast components are not met if visible surface flaws are detected. The tested castings, which had characteristic traces of the casting process, were subjected to vibratory machining. The machining with loose abrasive media in vibrating containers is aimed at smoothing the surface and reducing or completely removing flashes. To complement the visual testing were also conducted research on the contact profilometer Taylor Hobson PGI 1200. Particular attention was focused on measuring the height of flashes and changes in the surface of smoothed details based on BNIF No. 359 touch-visual patterns. Based on the work, it can be concluded that vibratory machining allows for removal flashes and smoothing of the surface of aluminum alloy cast objects.
2
Content available Research on the Influence of Vibratory Machining on Titanium Alloys Properties
Bańkowski D., Spadło S.
Archives of Foundry Engineering
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2020
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Vol. 20, iss. 3
47--52
EN
This article proposes these of vibratory machining to Ti-6Al-4V titanium alloy as finishing treatment. Titanium alloy was used in the aerospace industry, military, metallurgical, automotive and medical processes, extreme sports and other. The three-level three-factor Box-Behnken experiment examined the influence of machining time of vibratory machining, the type of mass finishing media used and the initial state of the surface layer on the mass loss, geometric structure of the surface, micro hardness and the optimal process parameters were determined. Considerations were given the surfaces after milling, after cutting with a band saw and after the sanding process. The experiment used three types of mass finishing media: polyester, porcelain and metal. Duration of vibratory machining treatment was assumed to be 20, 40, 60 minutes. The form profiles before and after vibratory machining were determined with the Talysurf CCI Lite - Taylor Hobson optical profiler. Future tests should concern research to carry out tests using abrasive pastes with a larger granulation of abrasive grains, to carry out tests for longer processing times and to determine the time after which the parameters of geometrical structure of the surface change is unnoticeable.
3
Content available The Influence of Abrasive Paste on the Effects of Vibratory Machining of Brass
Bańkowski D., Spadło S.
Archives of Foundry Engineering
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2019
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iss. 4
5--10
EN
The article presents the results of research on the finishing of M63 Z4 brass by vibratory machining. Brass alloy was used for the research due to the common use of ammunition elements, cartridge case and good cold forming properties on the construction. Until now, the authors have not met with the results of research to determine the impact of abrasive pastes in container processing. It was found that the additive for container abrasive treatment of abrasive paste causes larger mass losses and faster surface smoothing effects. The treatment was carried out in two stages: in the first stage, the workpieces were deburred and then polished. Considerations were given to the impact of mass of workpieces, machining time and its type on mass loss and changes in the geometric structure of the surface. The surface roughness of machining samples was measured with the Talysurf CCI Lite optical profiler. The suggestions for future research may be to carry out tests using abrasive pastes with a larger granulation of abrasive grains, and to carry out tests for longer processing times and to determine the time after which the parameters of SGP change is unnoticeable.
4
Content available remote Badania wpływu obróbki wibrościernej na warstwy nanoszone techniką ESD
Spadło S., Bańkowski D., Młynarczyk P.
Mechanik
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2018
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R. 91, nr 11
1029--1031
PL
Artykuł zawiera propozycję zastosowania obróbki ścierniwem luźnym w wibrujących pojemnikach do wygładzania powierzchni nanoszonych techniką ESD. W badaniach nanoszono warstwę elektrodą wolframową na podłożu stalowym. Następnie przeprowadzono obróbkę wibrościerną. Zbadano SGP przed obróbką wibracyjną i po niej. Ponadto zbadano skład chemiczny oraz grubość nanoszonych warstw.
EN
The article presents the proposal of using abrasive treatment in vibrating containers for surface treatment applied with the Electro Spark Deposition technique. In tests on a carbon steel the layer was applied with a tungsten electrode. After the tungsten layers were applied, a vibro-abrasive treatment was carried out. Changes in the geometrical structure of the surface of the deposited layers before and after vibratory processing were investigated. In addition, the chemical composition and the thickness of the coatings were examined.
5
Content available remote Badania obróbki wykończeniowej elementów wykrawanych z wykorzystaniem luźnych kształtek
Spadło S., Bańkowski D., Mamla M.
Mechanik
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2017
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R. 90, nr 11
1012--1014
PL
Artykuł zawiera przykład zastosowania niekonwencjonalnej metody wykończeniowej z użyciem luźnych kształtek ściernych, zwanej obróbką wibrościerną. Jako przedmioty do obróbki przyjęto typowe części maszyn w postaci metalowych podkładek. Szczególną uwagę zwrócono na zaokrąglenie krawędzi oraz zmniejszenie chropowatości powierzchni i poprawę jej refleksyjności. Określono wpływ podstawowych parametrów procesu na uzyskiwane rezultaty. W wyniku badań wyznaczono ubytek masy w funkcji czasu trwania obróbki. Dzięki obserwacjom na profilometrze optycznym Taylor Hobson Talysurf CCI Lite możliwe było zgromadzenie i przeanalizowanie wyników w postaci podstawowych parametrów struktury geometrycznej powierzchni.
EN
The paper presents an example of an unconventional finishing method using loose abrasive fittings known as vibration machining. Typical machine parts in the form of metal supports have been the workpieces. Particular attention has been paid to rounding the edges, reducing the roughness of the surface, and improving its reflectivity. The influence of basic process parameters on the achieved results has been determined. Tests allowed to determine the mass loss as a function of machining time. Due to observations using the Taylor Hobson Talysurf CCI Lite optical profilometer, it was possible to accumulate and to analyze results in a form of basic parameters of surface geometric structure.
6
Content available Vibratory Machining Effect on the Properties of the Aluminum Alloys Surface
Bańkowski D., Spadło S.
Archives of Foundry Engineering
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2017
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Vol. 17, iss. 4
19--24
EN
The article presents an example of finishing treatment for aluminum alloys with the use of vibration machining, with loose abrasive media in a closed tumbler. For the analysis of selected properties of the surface layer prepared flat samples of aluminum alloy PA6/2017 in the state after recrystallization. The samples in the first stage were subjected to a treatment of deburring using ceramic media. In a second step polishing process performed with a strengthening metal media. In addition, for comparative purposes was considered. only the case of metal polishing. The prepared samples were subjected to hardness tests and a tangential tensile test. As a result of finishing with vibratory machining, it was possible to remove burrs, flash, rounding sharp edges, smoothing and lightening the surface of objects made. The basic parameters of the surface geometry were obtained using the Talysurf CCI Lite - Taylor Hobson optical profiler. As a result of the tests it can be stated that the greatest reduction of surface roughness and mass loss occurs in the first minutes of the process. Mechanical tests have shown that the most advantageous high values of tensile strength and hardness are obtained with two-stage vibration treatment, - combination of deburring and polishing. Moreover the use of metal media resulted in the strengthening of the surface by pressure deburring with metal media.
7
Content available remote Sterowanie obróbką wibracyjną wałów długowymiarowych
Draczow A., Taranenko G., Taranenko W., Świć A., Hałas W.
Pomiary Automatyka Robotyka
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2009
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R. 13, nr 2
132-138
PL
W artykule analizowane są procesy dynamiczne przebiegające podczas obróbki wibracyjnej półfabrykatów o małej sztywności. Przedstawiono sposób sterowania parametrami technologicznymi umożliwiający identyfikację procesów relaksacji i uzyskanie odpowiednich parametrów geometrycznych półfabrykatu.
EN
The article is devoted to the problem of dynamic of the low-rigid work pieces by the affection vibration. The method of control of technological parameters to intensify of the stress relaxation and increasing of the part geometrical stability is substantiated.
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