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    Wyświetlanie 1-7 z 7
    Tytuł:
    Energy consumption modeling of processes in the automated manufacturing systems
    Autorzy:
    Honczarenko, J.
    Berliński, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/407311.pdf
    Data publikacji:
    2012
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    proces produkcji
    energochłonność
    wydajność ekonomiczna
    energy consumption
    manufacturing process
    saving energy
    Opis:
    High-tech manufacturing such as machining at high speeds, laser, electrical discharge machining are highly energy intensive. Automation of assistant processes such as transport, storage, quality control also causes increasing of energy consumption. In this context, important is estimating and minimize the volume used energy. The main contribution of paper is the evaluation method of energy production processes in automated production systems, based on the equation energy formulation. Simple calculation energy consumption example was also presented for elementary transport operations in a high storage depot. Implantation this method enables rating power consumption of manufacturing process on design stage where used are technical subsystems such as: machines, conveyors, manipulators etc. Designing processes with power rating consumption enable saving energy in manufacturing processes that is important for their economic efficiency.
    Źródło:
    Management and Production Engineering Review; 2012, 3, 1; 92-96
    2080-8208
    2082-1344
    Pojawia się w:
    Management and Production Engineering Review
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Selection of data mining method for multidimensional evaluation of the manufacturing process state
    Autorzy:
    Rogalewicz, M.
    Piłacińska, M.
    Kujawińska, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/407333.pdf
    Data publikacji:
    2012
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    jakość kontroli
    proces produkcji
    eksploaracja danych
    metoda
    klasyfikacja
    quality control
    process state evaluation
    data mining methods
    classification
    Opis:
    The article deals with the issues involved in evaluating the process state on the basis of many measures, including: process parameters, diagnostic signals and events occurring during the process. These measures as well as those measurements traditionally used in the evaluation of process capability, offer a relevant source of information about the manufacturing process and the authors attempted to ascertain the most suitable method, or group of methods, for achieving this. They present the main criteria for the categorization division of the methods of the manufacturing process state evaluation and, from those identified, distinguish the traditional from Data Mining methods. The authors then specify some basic requirements regarding the desired method or group of methods and focus on the classification problem. A division and classification of the methods is made and briefly described. Finally, the authors specify the criteria for their selection of the Data Mining method type as being the most appropriate for the evaluation of the manufacturing process state and, from within this type, offer the most suitable groups of methods. Some directions for further research are discussed at the end of the article.
    Źródło:
    Management and Production Engineering Review; 2012, 3, 2; 27-35
    2080-8208
    2082-1344
    Pojawia się w:
    Management and Production Engineering Review
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Optimal production of electrolytic copper determined by the concentration and distribution of copper concentrates to smelters on the example of KGHM
    Optymalizacja produkcji miedzi elektrolitycznej poprzez system wzbogacania i dystrybucji koncentratów do hut na przykładzie KGHM
    Autorzy:
    Saramak, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/351479.pdf
    Data publikacji:
    2011
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    optymalizacja
    strategia produkcji miedzi
    programowanie nieliniowe
    sterowanie
    modelowanie
    optimization
    copper production strategy
    nonlinear programming
    process control
    modelling
    Opis:
    The issues of copper production strategy for the Polish copper industry are presented in the article. The problem is considered within the scope of the ore extraction, ore concentration and metallurgical processing of the copper concentrate and the main aim is to produce the specific amount of copper, which generates maximum technological and economic benefits. In order to determine the strategy of production for a company an optimisation approach may be applied with the target function defined as either the maximization of metal recovery or the maximization of profit. The real operating conditions are implemented into the model, together with existing limitation resulting from the concentration technology and metallurgical treatment. The problem verification was possible with using of non-linear programming theory. Two variants were considered: the first for lower production costs, and the second for low stock market prices. The presented optimal strategies determine the copper grades of concentrates as well as the system of concentrates distribution between three smelters. Generally smelters should receive concentrates with higher copper grades for low stock market metal prices and for low processing costs the mass of concentrates delivered to smelters should be higher together with decreased the copper grades.
    W pracy przedstawiono zagadnienia dotyczące strategii produkcji miedzi elektrolitycznej dla polskich warunków produkcji miedzi w układzie kopalnia-zakład przeróbczy-huta miedzi. Problem jest rozpatrywany głównie z punktu widzenia hut miedzi, ale determinowany jest jakością i ilością koncentratów miedziowych wyprodukowanych przez zakłady przeróbcze. Celem jest osiągniecie maksymalnych efektów technologicznych i ekonomicznych. Podejście optymalizacyjne zakłada zbudowanie odpowiedniego modelu ekonometrycznego z funkcja celu zdefiniowaną jako maksymalny odzysk metalu oraz uwzględnieniem istniejących realnych ograniczeń technologicznych Weryfikacja modelu jest możliwa z wykorzystaniem oprogramowania działającego w oparciu o teorię programowania nielinowego. W artykule przedstawiono analizę dla dwóch wariantów produkcji miedzi: niskich kosztów produkcyjnych oraz niskich cen giełdowych miedzi. Aby maksymalizować funkcję celu w zaprezentowanym modelu, w okresie niskich cen produkcji huty powinny otrzymywać mniej koncentratów o wyższej zawartości miedzi, natomiast przy niskich giełdowych cenach miedzi, huty powinny przerabiać większe ilości koncentratu o zmniejszonej zawartości miedzi.
    Źródło:
    Archives of Metallurgy and Materials; 2011, 56, 3; 619-626
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The effect of the production process and heat processing parameters on the fatigue strength of high-grade medium-carbon steel
    Autorzy:
    Lipiński, T.
    Wach, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/382766.pdf
    Data publikacji:
    2012
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    obróbka cieplna
    metalografia
    stal
    wytrzymałość zmęczeniowa
    trwałość zmęczeniowa
    proces produkcji
    heat treatment
    metallography
    steel
    fatigue strength
    fatigue durability
    production process
    Opis:
    The experimental material consisted of semi-finished products of high-grade, medium-carbon constructional steel with: manganese, chromium, nickel, molybdenum and boron. The experimental material consisted of steel products obtained in three metallurgical processes: electric and desulfurized (E), electric and desulfurized with argon-refined (EA) and oxygen converter with vacuum degassed of steel (KP). The production process involved two melting technologies; in a 140-ton basic arc furnace with desulphurisation and argon refining variants, and in a 100-ton oxygen converter. Billet samples were collected to analyze: relative volume of impurities, microstructure and fatigue tests. The samples were quenched and austenitized at a temperature of 880 C for 30 minutes. They were then cooled in water and tempered by holding the sections at a temperature of 200, 300, 400, 500 and 600 C for 120 minutes and air-cooled. Fatigue tests were performed with the use of a rotary bending machine at a frequency of 6000 cpm. The results were statistical processed and presented in graphic form. This paper discusses the results of microstructural analyses, the distribution of the relative volume of impurities in different size ranges, the fatigue strength characteristics of different production processes, the average number of sampledamaging cycles and the average values of the fatigue strength coefficient for various heat processing options.
    Źródło:
    Archives of Foundry Engineering; 2012, 12, 2; 55-60
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Design optimization of the Petri net-based production process supported by additive manufacturing technologies
    Autorzy:
    Patalas-Maliszewska, Justyna
    Wiśniewski, Remigiusz
    Topczak, Marcin
    Wojnakowski, Marcin
    Powiązania:
    https://bibliotekanauki.pl/articles/2173645.pdf
    Data publikacji:
    2022
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    additive manufacturing technology
    manufacturing processes
    Petri nets
    process modelling
    verification
    validation
    optimization of production process supported by AM technologies
    technologia wytwarzania przyrostowego
    proces produkcji
    sieci Petriego
    modelowanie procesów
    weryfikacja
    walidacja
    optymalizacja procesu produkcyjnego wspierana technologiami AM
    Opis:
    In the era of smart manufacturing and Industry 4.0, the rapid development of modelling in production processes results in the implementation of new techniques, such as additive manufacturing (AM) technologies. However, large investments in the devices in the field of AM technologies require prior analysis to identify the possibilities of improving the production process flow. This paper proposes a new approach to determine and optimize the production process flow with improvements made by the AM technologies through the application of the Petri net theory. The existing production process is specified by a Petri net model and optimized by AM technology. The modified version of the system is verified and validated by the set of analytic methods safeguarding against the formal errors, deadlocks, or unreachable states. The proposed idea is illustrated by an example of a real-life production process.
    Źródło:
    Bulletin of the Polish Academy of Sciences. Technical Sciences; 2022, 70, 2; art. no. e140693
    0239-7528
    Pojawia się w:
    Bulletin of the Polish Academy of Sciences. Technical Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Some Possibilities of Using Statistical Methods While Solving Poor Quality Production
    Autorzy:
    Lakomá, R.
    Čamek, L.
    Lichý, P.
    Kroupová, I.
    Radkovský, F.
    Obzina, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/1837805.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    production process
    investment casting
    poor quality products
    casting defects
    quality of cast
    statistical hypothesis
    wax patterns
    proces produkcji
    produkty odlewnicze
    wady odlewów
    jakość odlewu
    metody statystyczne
    formy woskowe
    Opis:
    This paper presents an overview of a research on six practical cases that were solved in a precise casting company where parts are cast by the mean of the low-wax casting method (investment casting) in order to decrease poor quality production. The steel cast parts production technology by the lost-wax method requires the detailed work procedures observation. On the base of statistical processing data of given types of casting products, it was possible to assess the significance of each particular checking events by using the statistical hypothesis testing. The attention was focused on wax and ceramic departments. The data in technological flow were compared before and after the implementation of the change and statistical confirmative influences were assessed. The target consisted in setting such control manners in order to get the right conditions for decreasing poor quality parts. It was evidenced that the cast part defect cause correct identification and interpretation is important.
    Źródło:
    Archives of Foundry Engineering; 2021, 21, 1; 18-22
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Some Possibilities of Using Statistical Methods While Solving Poor Quality Production
    Autorzy:
    Lakomá, R.
    Čamek, L.
    Lichý, P.
    Kroupová, I.
    Radkovský, F.
    Obzina, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/1837848.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    production process
    investment casting
    poor quality products
    casting defects
    quality of cast
    statistical hypothesis
    wax patterns
    proces produkcji
    produkty odlewnicze
    wady odlewów
    jakość odlewu
    metody statystyczne
    formy woskowe
    Opis:
    This paper presents an overview of a research on six practical cases that were solved in a precise casting company where parts are cast by the mean of the low-wax casting method (investment casting) in order to decrease poor quality production. The steel cast parts production technology by the lost-wax method requires the detailed work procedures observation. On the base of statistical processing data of given types of casting products, it was possible to assess the significance of each particular checking events by using the statistical hypothesis testing. The attention was focused on wax and ceramic departments. The data in technological flow were compared before and after the implementation of the change and statistical confirmative influences were assessed. The target consisted in setting such control manners in order to get the right conditions for decreasing poor quality parts. It was evidenced that the cast part defect cause correct identification and interpretation is important.
    Źródło:
    Archives of Foundry Engineering; 2021, 21, 1; 18-22
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-7 z 7

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