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    Wyświetlanie 1-5 z 5
    Tytuł:
    Gating systems for sizeable castings from Al alloys cast into ceramic moulds
    Autorzy:
    Stachovec, I.
    Horáček, M.
    Zemčík, L.
    Kolda, V.
    Horenský, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/382771.pdf
    Data publikacji:
    2012
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    technologia informatyczna
    przemysł odlewniczy
    krzepnięcie
    układ wlewowy
    forma ceramiczna
    symulacja
    information technology
    foundry industry
    solidification
    gating systems
    ceramic mould
    simulation
    Opis:
    In contrast to casting to conventional non-reusable 'sand' moulds, for which calculating technique for an optimum design of the gating system is comparatively well-developed, a trial-and-error method is applied mostly for casting to ceramic shell moulds made by the investment casting technology. A technologist selects from gating systems of several types (that are standardized by the foundry mostly) on the basis of experience. However, this approach is not sustainable with ever growing demands on quality of castings and also the economy of their fabrication as well as with new types of complex sizeable castings introduced to the production gradually (by new customers from the aircraft industry above all) any more. The simulation software may be used as a possible tool for making the process of optimising gating systems more effective.
    Źródło:
    Archives of Foundry Engineering; 2012, 12, 2; 65-68
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Costs analysis of iron casts manufacturing
    Autorzy:
    Kukla, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/382760.pdf
    Data publikacji:
    2012
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    technologia informatyczna
    przemysł odlewniczy
    system transportowy
    analiza kosztów
    ergonomia pracy
    stanowisko pracy
    information technology
    foundry industry
    transport system
    costs analysis
    work ergonomics
    workstations
    production systems rationalisation
    Opis:
    The article presents the issues of costs analysis of iron casts manufacturing using automated foundry lines. Particular attention was paid to departmental costs, conversion costs and costs of in-plant transport. After the Pareto analysis had been carried out, it was possible to set the model area of the process and focus on improving activities related to finishing of a chosen group of casts. In order to eliminate losses, the activities realised in this domain were divided into activities with added value, activities with partially added value and activities without added value. To streamline the production flow, it was proposed to change the location of workstations related to grinding, control and machining of casts. Within the process of constant improvement of manufacturing processes, the aspect of work ergonomics at a workstation was taken into account. As a result of the undertaken actions, some activities without added value were eliminated, efficiency was increased and prime costs of manufacturing casts with regard to finishing treatment were lowered.
    Źródło:
    Archives of Foundry Engineering; 2012, 12, 2; 45-48
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Improving Quality and Occupational Safety on Automated Casting Lines
    Autorzy:
    Kukla, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/380123.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    foundry industry
    quality management
    automation in foundry
    application of information technology
    modelling of production systems
    simulation of production systems
    work ergonomics
    przemysł odlewniczy
    zarządzanie jakością
    automatyzacja w odlewni
    zastosowanie technologii informatycznych
    modelowanie systemów produkcyjnych
    symulacja systemów produkcyjnych
    ergonomia pracy
    Opis:
    The paper presents a practical example of improving quality and occupational safety on automated casting lines. Working conditions on the line of box moulding with horizontal mould split were analysed due to low degree of automation at the stage of cores or filters installation as well as spheroidizing mortar dosing. A simulation analysis was carried out, which was related to the grounds of introducing an automatic mortar dispenser to the mould. To carry out the research, a simulation model of a line in universal Arena software for modelling and simulation of manufacturing systems by Rockwell Software Inc. was created. A simulation experiment was carried out on a model in order to determine basic parameters of the working system. Organization and working conditions in other sections of the line were also analysed, paying particular attention to quality, ergonomics and occupational safety. Ergonomics analysis was carried out on manual cores installation workplace and filters installation workplace, and changes to these workplaces were suggested in order to eliminate actions being unnecessary and onerous for employees.
    Źródło:
    Archives of Foundry Engineering; 2017, 17, 3; 69-72
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Improving the Organization of Iron Casts Finishing Processes
    Autorzy:
    Kukla, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/380666.pdf
    Data publikacji:
    2015
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    information technology
    foundry industry
    automation in foundry
    robotics in foundry
    multicriteria variants analysis
    modelling of production systems
    simulation of production systems
    work ergonomics
    technologia informatyczna
    przemysł odlewniczy
    automatyka w odlewnictwie
    robotyka w odlewnictwie
    modelowanie systemów produkcji
    symulacja systemów produkcyjnych
    ergonomia pracy
    Opis:
    The paper presents issues of production processes improvement in foundries in terms of finishing treatment of iron casts on grinding workstations. Basing on the conducted analysis of work ergonomics on the grinding line and the observation of work at workstations, a range of improvements related to organizing grinding treatment processes was proposed. In order to visualize the production system functioning and estimate its efficiency, a simulation model of a grinding line has been created, on which a simulation experiment was carried out. Due to many factors influencing the effectiveness of processes, it was suggested to use multi-criteria evaluation tools to choose the most rational solution. Three criteria have been assumed, according to which particular improvement variants were evaluated. Also, criteria weights have been set according to the Saaty’s method, and particular solution variants have been assessed separately with respect to each criterion. On the basis of the presented course of action, the best solution has been selected from among the analyzed options.
    Źródło:
    Archives of Foundry Engineering; 2015, 15, 2 spec.; 55-58
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Modelling and Optimization of Organization of Workplaces in a Foundry
    Autorzy:
    Kukla, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/380728.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    application of information technology
    foundry industry
    automation in foundries
    robotics in foundries
    equipment effectiveness
    modelling of production systems
    simulation of production systems
    work ergonomics
    zastosowanie technologii informatycznych
    przemysł odlewniczy
    automatyzacja odlewni
    robotyka w odlewniach
    skuteczność urządzeń
    modelowanie systemów produkcyjnych
    symulacja systemów produkcyjnych
    ergonomia pracy
    Opis:
    The paper presents a practical example of improvement of foundry production systems in terms of post-finishing of nodular iron castings produced in the conditions of bulk production for automotive industry. The attention was paid to high labour-intensive efforts, which are difficult to be subjected to mechanization and automation. The times of actions related to grinding processing of castings in three grinding positions connected with a belt conveyor were estimated with the use of a time study method. A bottleneck as well as limiting factors were specified in a system. A number of improvements were proposed, aimed at improving work organization on the castings post-finishing line. An analysis of work ergonomics at the workplace was made in order to eliminate unnecessary and onerous for the employee actions. A model of production system using the Arena software, on which a simulation experiment was conducted, was drawn up in order to visualize the analysed phenomena. The effects of the project were shown on graphs comparing times, costs, work ergonomics and overall efficiency of production equipment indicator.
    Źródło:
    Archives of Foundry Engineering; 2016, 16, 3; 55-58
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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