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    Wyświetlanie 1-10 z 10
    Tytuł:
    Criteria in Designing of Compressed Air Installation in Foundry Plants
    Autorzy:
    Wrona, R.
    Brzeziński, M.
    Ziółkowski, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/379835.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    criteria of installation design
    energy management
    compressed air
    sprężone powietrze
    projektowanie instalacji
    zarządzanie energią
    Opis:
    Design of a compressed air system is a complex issue, involving the design of structures formed by the air sources, air receptors and installations connecting all structure components. Another major task is to ensure the required quality of compressed air. The paper briefly outlines the methodology of integrated and network structure design, using an objective function to find the optimal solution. In terms of quality assurance, the technological aspects of compressed air generation, treatment and distribution are defined.
    Źródło:
    Archives of Foundry Engineering; 2014, 14, 4; 103-108
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Standaryzacja procesu oczyszczania maszynowego odlewów
    Standardization of a Castings Shot-Blasting Process
    Autorzy:
    Grzymałowski, M.
    Herberg, A.
    Wrona, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/380731.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    oczyszczanie odlewu
    standaryzacja
    oczyszczarka wirnikowa
    casting cleaning
    standards
    rotor cleaner
    Opis:
    Standaryzacja jest działaniem w wyniku którego otrzymuje się stabilizowanie procesu technologicznego prowadzącego do osiągania optymalnych efektów. W niniejszym artykule tematem standaryzacji jest proces oczyszczania metodą strumieniowo-ścierną z zastosowaniem oczyszczarek wirnikowych. Scharakteryzowano zasadnicze etapy badawczo-diagnostyczne dotyczące zagadnień konstrukcyjnych w mechanizmach oczyszczarek, parametrów eksploatacyjnych oraz zagadnień organizacji prowadzenia procesu. Kryteriami, które przyjęto do oceny oczyszczania są: wydajność oczyszczarki, czas czyszczenia, skuteczność określana stopniem czystości powierzchni odlewów, minimalizacja zużycia ścierniwa oraz stopnień zużycia dynamicznych elementów oczyszczarek.
    Standardization is a process which leads to the stabilization of an engineering process allowing it to achieve optimal results. This article is about the standardization of a process in which shot-blasting machines are used to clean castings by means of the jet-and-abrasion method. Characterized are the main aspects of diagnostic research regarding the construction of the shot-blasting machines, their operational parameters, and the organization of the shot-blasting process itself. The criteria adopted in order to evaluate the shot-blasting process are: capacity of the machines, cleaning time, effectiveness measured by the degree of casting surface finish, minimalization of wear of the abrasive material, and the wear of the movable parts of the shot-blasting machines.
    Źródło:
    Archives of Foundry Engineering; 2013, 13, 3 spec.; 39-44
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Sources of Surface Defects in Castings Produced in Automated Process Lines
    Autorzy:
    Wrona, R.
    Brzeziński, M.
    Ziółkowski, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/383195.pdf
    Data publikacji:
    2015
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    surface defect
    sand mix
    casting production
    wada powierzchniowa
    masa formierska
    produkcja odlewnicza
    Opis:
    This study summarises the research efforts undertaken in iron foundry plants in which the process are mostly automated and mechanised. The research program was limited in scope, focusing on causes of surface defects in castings products that are attributable to the bentonite-containing sand and the mould system. One of the potential roots of surface defects is heterogeneity of sand grains, containing lumped ball-shaped grains and irregular pellets with a layered-structure. The moisture contents of those lumped grains is different than the moisture level required in the process, besides these grains may contain various elements and metallic compounds which, when cast into moulds, may react with molten metals in an uncontrolled manner. As a result, surface defects are produced, such as surface blowholes, burst penetration, sand holes, slag inclusions, pinhole porosity. This study investigated the efficiency of key sand preparation and moulding machines and installations integrated into the casting process line. The efficiency of machines and installations is defined in terms of quality parameters of sand mix and moulds, which are associated with the emergence of surface defects on castings.
    Źródło:
    Archives of Foundry Engineering; 2015, 15, 4; 91-94
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Energy Demand of Compressor Machines Used in Foundry Plants
    Autorzy:
    Ziółkowski, E.
    Smyksy, K.
    Wrona, R.
    Brzeziński, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/382369.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    automation
    foundry plant
    energy demand
    compressor machine
    air installation
    automatyzacja
    zakład odlewniczy
    zapotrzebowanie na energię
    kompresor powietrza
    klimatyzacja
    Opis:
    The paper investigates the issues relating to energy consumption in the compressed air installations in foundry plants. Basing on the general characteristics of modern compressors, the major factor and conditions are identified that affect the energy consumption by compressor machines in installations with equalising tanks. Selected aspects are addressed on the basis of measurement data of a screw compressor available in the laboratory of the Faculty of Foundry Engineering AGH-UST.
    Źródło:
    Archives of Foundry Engineering; 2013, 13, 2 spec.; 112-115
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Virtual factory as a method of foundry design and production management
    Autorzy:
    Stawowy, A.
    Wrona, R.
    Brzeziński, M.
    Ziółkowski, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/383269.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    information technology
    foundry industry
    automation in foundry
    robotics in foundry
    virtual factory design
    technologia informacyjna
    przemysł odlewniczy
    automatyka w odlewnictwie
    robotyka w odlewnictwie
    Opis:
    The paper outlines the methodology of virtual design of a foundry plant as a system. The most important stage in the procedure involves the development of a model defined as a set of data about the system. Model development involves two stages: defining the model’s architecture and specifying the model data in the form of parameters and input-output relationships. The structure is understood as configuration of machines and transport units, representing the sub-systems and system components. As the main purpose of the simulation procedure is to find the characteristics of the system’s behaviour, the merits of the iterative method involving analysis, synthesis and evaluation of results are fully explored.
    Źródło:
    Archives of Foundry Engineering; 2013, 13, 1; 113-118
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analysis and assessment of measurements results of electric power demand in a model vacuum-assisted moulding installation
    Autorzy:
    Smyksy, K.
    Wrona, R.
    Brzeziński, M.
    Ziółkowski, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/380436.pdf
    Data publikacji:
    2012
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    mechanizacja procesów odlewniczych
    automatyzacja procesów odlewniczych
    pomiar elektroenergetyczny
    formowanie podciśnieniowe
    mechanisation of foundry processes
    automation of foundry processes
    electric power measurements
    vacuum assisted moulding processes
    Opis:
    In this article the main problems related with the proper choice of the design and operation parameters of vacuum installation in vacuum moulding system have been discussed. In such system a vacuum are generated using electric-driven vacuum pumps. The aim of the experiment is to evaluate the performance of a vacuum system basing on registered plots of selected electric power parameters of the power-supplying system of the pumps with parallel measurements instantaneous values of pressure in selected points of model stand. The measurements system for power-supply unit has incorporated the recorders of instantaneous current and voltage values. Following the suitable numerical procedure, the experimental data are analysed to yield mathematical relationships between the variations of the generated vacuum pressure levels and variations of selected electric power parameters. According to the authors, the applied measurements system of the parameters of a vacuum-assisted installation may become an effective and easy practical method of evaluating the performance of such installations, used also in industry.
    Źródło:
    Archives of Foundry Engineering; 2012, 12, 4; 135-140
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Profitability of Photovoltaic and Energy Storage System in a Foundry Plant
    Autorzy:
    Stawowy, Adam
    Wrona, R.
    Sawczuk, M.
    Lasek, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/27314165.pdf
    Data publikacji:
    2023
    Wydawca:
    Polska Akademia Nauk. Czasopisma i Monografie PAN
    Tematy:
    economics of foundry process
    energy management
    environmental protection
    energy storage system
    profitability of photovoltaic
    ekonomika procesu odlewniczego
    zarządzanie energią
    ochrona środowiska
    magazynowanie energii
    rentowność fotowoltaiki
    Opis:
    The article presents a case study on the effectiveness of photovoltaic farm and battery energy storage in one of the Polish foundries. In the study, we consider two investment options: stand-alone PV farm of 1MWp and the farm together with battery energy storage with a maximum capacity of 4MWh. The Payback Period and Net Present Value were used as measures of investment profitability. The paper provides a detailed presentation of the assumptions made, as well as the PV electricity production model of the farm and the optimization model that determines the operation cycle of the energy storage. The case study presented in the article shows that the PV farm is economically sensible and profitable, but the battery energy storage is too costly to give a positive economic effect. Energy storage is an important element that provides flexibility in the energy supply system, so it is necessary to find a technical solution that gives this flexibility. Such a solution could be a virtual power plant, which could include a foundry energy system with a RES installation inside.
    Źródło:
    Archives of Foundry Engineering; 2023, 23, 2; 100--105
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The quality of compressed air as the necessary condition the improving the process efficiency in foundry plants
    Autorzy:
    Wrona, R.
    Ziółkowski, E.
    Smyksy, K.
    Brzeziński, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/382421.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    compressed air
    foundry technologies
    powietrze sprężone
    technologia odlewnicza
    Opis:
    A foundry plant as a manufacturing system operates in accordance with the methods and principles making up the entire process of casting production, involving the use of machines and installations. One of the factors transforming the foundry plant’s static structure into the dynamic – processing structure is the compressed air. Practically each procedure making up the casting manufacturing process involves compressed air. Its sources include compressor machines connected to the receiving tanks, making up the compressed air transport installation. Two major aspects are to be addressed in compressed air management: the engineering and economic ones. The engineering aspect involves the manufacturing of compressed air with the required quality features and in the amount balancing its demand, whilst the economic aspect is associated with cost minimisation. This paper investigates the engineering aspects: air quality, with the main focus on air treatment processes to satisfy the constructional and operational requirements of air receivers present in the casting processes.
    Źródło:
    Archives of Foundry Engineering; 2013, 13, 4; 107-111
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Methodology of testing shot blasting machines in industrial conditions
    Autorzy:
    Wrona, R.
    Zyzak, P.
    Ziółkowski, E.
    Brzeziński, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/382809.pdf
    Data publikacji:
    2012
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    badanie nieniszczące
    obróbka wykańczająca
    metodyka badań
    nondestructive testing
    finishing treatment
    blasting units
    operation and maintenance
    test methodology
    Opis:
    Shot blasting machines are widely used for automated surface treatment and finishing of castings. In shot blasting processes the stream of shots is generated and shaped by blasting turbines, making up a kinetic and dynamic system comprising a separating rotor, an adapting sleeve and a propelling rotor provided with blades. The shot blasting performance- i.e. the quality of shot treated surfaces depends on the actual design and operational parameters of the unit whilst the values of relevant parameters are associated with the geometry of turbine components and the level of its integration with the separator system. The circulation of the blasting medium becomes the integrating factor of the process line, starting from the hopper, through the propeller turbine, casting treatment, separation of contaminated abrasive mixture, to its recycling and reuse. Inferior quality of the abrasive agent (shot) and insufficient purity of the abrasive mixture are responsible for low effectiveness of shot blasting. However, most practitioners fail to fully recognise the importance of proper diagnostics of the shot blasting process in industrial conditions. The wearing of major machine components and of the blasting agent and quality of shot treated surfaces are often misinterpreted, hence the need to take into account all factors involved in the process within the frame of a comprehensive methodology. This paper is an attempt to formulate and apply the available testing methods to the engineering practice in industrial conditions.
    Źródło:
    Archives of Foundry Engineering; 2012, 12, 2; 97-104
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Applications of monitoring of electric power parameters to performance evaluation of a model vacuum-assisted moulding installation
    Autorzy:
    Ziółkowski, E.
    Brzeziński, M.
    Wrona, R.
    Smyksy, K.
    Zyzak, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/382938.pdf
    Data publikacji:
    2012
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    mechanizacja procesów odlewniczych
    automatyzacja procesów odlewniczych
    pomiar elektroenergetyczny
    formowanie podciśnieniowe
    mechanisation of foundry processes
    automation of foundry processes
    electric power measurements
    vacuum-assisted moulding processes
    Opis:
    Vacuum conditions in foundry installations are generated using electric-driven vacuum pumps. The purpose of the experiment is to evaluate the performance of a vacuum-assisted system for compaction of moulding sand basing on registered plots of selected electric power parameters of the power-supplying system of the pumps. Model testing done on an experimental vacuum system installation, power-supplied from a system incorporating the recorders of instantaneous current and voltage values. Following the numerical procedure, the experimental data are analysed to yield mathematical relationships between the variations of the generated vacuum pressure levels and variations of selected electric power parameters. Registered and computed values of selected parameters: instantaneous and RMS voltage and current values, active, reactive and apparent power levels and power coefficient allow for diagnosing the adequacy and reliability of the system operation. According to the authors, the applied monitoring of the power parameters of a vacuum-assisted installation may become an effective and easy practical method of evaluating the performance of such installations, used also in foundry plants.
    Źródło:
    Archives of Foundry Engineering; 2012, 12, 2; 267-272
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-10 z 10

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