Temat: microstructure modelling - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Experimental investigation and modelling of Friction Stir Processing of cast aluminium alloy AlSi9Mg
Autorzy:: Węglowski, M. S.
Dymek, S.
Hamilton, C. B.
Powiązania:: https://bibliotekanauki.pl/articles/200339.pdf
Data publikacji:: 2013
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: friction stir processing
aluminum alloys
numerical modelling
neural networks
microstructure
Opis:: Friction Stir Processing (FSP) is a novel solid state processing technique which can be used for microstructural modification of surface layers in metallic materials. This paper analyzes the effects of FSP process parameters on spindle torque acting on the tool and on the tool temperature. It has been shown that an increase in the rotational speed brings about a decrease in the torque and an increase of temperature. For temperature estimation in the stir zone a numerical model was applied, while for predicting a relationship between the spindle torque acting on the tool, rotational and travelling speeds and the down force, the artificial neural networks approach was employed. Light and electron (scanning and transmission) microscopy investigation showed that the FSP process reduces porosity and produces a more uniform distribution of second-phase particles.
Źródło:: Bulletin of the Polish Academy of Sciences. Technical Sciences; 2013, 61, 4; 893-904
0239-7528
Pojawia się w:: Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Analysis of the Industrial Process of Producing a Lever-Type Forging Used in Motorcycles
Autorzy:: Hawryluk, M.
Zwierzchowski, M.
Rychlik, M.
Gronostajski, Z.
Powiązania:: https://bibliotekanauki.pl/articles/355764.pdf
Data publikacji:: 2019
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: hot die forging
numerical modelling
microstructure analyze
forging defect
improving of technology
Opis:: The article presents an analysis of the multi-operation hot die forging process, performed on a press, of producing a lever forging used in the motorcycles of a renowned producer by means of numerical simulations. The investigations were carried out in order to improve (perfect) the currently applied production technology, mainly due to the presence of forging defects during the industrial production process. The defects result mainly from the complicated shape of the forging (bent main axis, deep and thin protrusions, high surface diversity in the cross section along the length of the detail), which, during the filling of the die by the deformed material, causes the presence of laps, wraps and underfills on the forging. Through the determination of the key parameters/quantities during the forging process, which are difficult to establish directly during the industrial process or experimentally, a detailed and complex analysis was performed with the use of FEM as well as through microstructure examinations. The results of the performed numerical modelling made it possible to determine: the manner of the material flow and the correctness of the impression filling, as well as the distributions of temperature fields and plastic deformations in the forging, and also to detect the forging defects often observed in the industrial process. On this basis, changes into the process were introduced, making it possible to improve the currently realized technology and obtain forgings of the proper quality as well as shape and dimensions.
Źródło:: Archives of Metallurgy and Materials; 2019, 64, 4; 1421-1432
1733-3490
Pojawia się w:: Archives of Metallurgy and Materials
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Analysis and Improvement of an Industrial Process of Hot Die Forging of an Elongated Forging Tipped with a Joggle with the Use of Numerical Simulation Results
Autorzy:: Hawryluk, Marek
Rychlik, Marcin
Polak, Sławomir
Zwierzchowski, Maciej
Dudkiewicz, Łukasz
Marzec, Jan
Jabłoński, Paweł
Powiązania:: https://bibliotekanauki.pl/articles/2201924.pdf
Data publikacji:: 2023
Wydawca:: Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:: closed die forging
numerical modelling
yoke type forging
quality of forging
microstructure of forging
Opis:: The article performs an analysis of a hot die forging process of producing an elongated forging ended with a joggle in a double system realized on a crank press Masey 1300 t, in open dies, in 3 operations. The thermomechanical model of the forging process considering the changes in the grain size and the forging material recrystallization was elaborated with the use of the calculation packet Qform 7. In the first place, an in-depth analysis of the currently realized forging technology was made, with a special consideration of the temperature changes in the tools as well as in the formed forging. Next, numerical modelling of the process was carried out, as a result of which the following were obtained: correct filling of the tool impressions by the deformed material, the temperature distributions for the forging and the tools, the plastic deformation distributions (considering the thermally activated phenomena), the changes in the grain size and the forging force courses. The results obtained from FEM enable a thorough analysis of the forging process, including: the effect of the deformation time and temperature on the grain size in the forging material, which was confirmed by the microstructure examination results.
Źródło:: Advances in Science and Technology. Research Journal; 2023, 17, 2; 192--205
2299-8624
Pojawia się w:: Advances in Science and Technology. Research Journal
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Analiza procesu kucia odkuwki typu rozwidlonego przy użyciu wyników symulacji numerycznej
Analysis of forging process of the yoke type forging using the results of numerical simulation
Autorzy:: Hawryluk, Marek
Polak, Sławomir
Gronostajski, Zbigniew
Ziemba, Jacek
Barełkowski, Artur
Jabłoński, Paweł
Powiązania:: https://bibliotekanauki.pl/articles/211417.pdf
Data publikacji:: 2019
Wydawca:: Sieć Badawcza Łukasiewicz - Instytut Obróbki Plastycznej
Tematy:: kucie matrycowe na prasie
modelowanie numeryczne
odkuwka typu rozwidlonego
mikrostruktura
die forging on press
numerical modelling
yoke type forging
microstructure
Opis:: W pracy przedstawiono wyniki modelowania numerycznego procesu kucia matrycowego na gorąco odkuwki typu rozwidlonego stosowanej w układzie kierowniczym realizowanego na prasie korbowej. Głównym celem analizy było wykorzystanie modelowania numerycznego do analizy i poprawy przemysłowego procesu wytwarzania odkuwki. Termomechaniczny model kucia odkuwki z odkształcalnymi narzędziami opracowano przy użyciu oprogramowania Forge NX 2.0. Do zbudowania modeli narzędzi kuźniczych wykorzystano program Catia. W wyniku przeprowadzonego modelowania uzyskano, m.in.: rozkłady temperatur dla odkuwki i narzędzi oraz odkształceń plastycznych (uwzględniających zjawiska aktywowane cieplnie), a także zmiany wielkości ziarna oraz przebiegi sił kucia. Otrzymane wyniki pozwalają na pełną analizę procesu kucia, w tym: wpływu czasu i temperatury odkształcania na wielkość ziarna w materiale odkuwki, co w przyszłości może pozwolić na wykorzystanie ciepła kucia do planowanej obróbki cieplnej i uzyskania określonej mikrostruktury.
The paper presents the results of numerical modeling of the forging hot forging process of the yoke type forging used in the steering system realized on the crank press. The main purpose of the analysis was to use computer simulation to analyze and improve the industrial forging process. The thermomechanical model of forging process with deformable tools was developed using the Forge NX 2.0 software. Catia program was used to build models of forging tools. As a result of the modeling obtained, inter alia: temperature distributions and plastic deformations for the forging (taking into account thermally activated phenomena), as well as grain size changes and forging forces. The obtained results allow for a full analysis of the forging process, including: identification of potential forging defects (overlaps) and the influence of time and temperature of deformation on the grain size in the forging material, which in the future may allow using the forging heat for the planned heat treatment and obtaining a specific microstructure.
Źródło:: Obróbka Plastyczna Metali; 2019, 30, 1; 83-94
0867-2628
Pojawia się w:: Obróbka Plastyczna Metali
Dostawca treści:: Biblioteka Nauki

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