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    Wyświetlanie 1-5 z 5
    Tytuł:
    Computer Catalog and Semantic Search of Data in the Domain of Cast Iron Processing
    Autorzy:
    Rojek, G.
    Regulski, K.
    Wilk-Kołodziejczyk, D.
    Kluska-Nawarecka, S.
    Wawrzaszek, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/381770.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    application of information technologies
    foundry
    semantic search
    ontology
    cast iron processing
    zastosowanie technologii informacyjnych
    odlewnictwo
    obróbka żeliwa
    Opis:
    The aim of this study is to design and implement a computer system, which will allow the semantic cataloging and data retrieval in the field of cast iron processing. The intention is to let the system architecture allow for consideration of data on various processing techniques based on the information available or searched by a potential user. This is achieved by separating the system code from the knowledge of the processing operations or from the chemical composition of the material being processed. This is made possible by the creation and subsequent use of formal knowledge representation in the form of ontology. So, any use of the system is associated with the use of ontologies, either as an aid for the cataloging of new data, or as an indication of restrictions imposed on the data which draw user attention. The use of formal knowledge representation also allows consideration of semantic meaning, a consequence of which may be, for example, returning all elements in subclasses of the searched process class or material grade.
    Źródło:
    Archives of Foundry Engineering; 2017, 17, 2; 79-84
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Use of Formal Knowledge Representation in Operating on Resources Concerning Cast Iron Processing
    Autorzy:
    Kluska-Nawarecka, S.
    Wilk-Kołodziejczyk, D.
    Rojek, G.
    Regulski, K.
    Polek, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/380345.pdf
    Data publikacji:
    2015
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    information technology
    foundry industry
    automation in foundry
    robotics in foundry
    semantic analysis
    semantic search
    technologia informatyczna
    przemysł odlewniczy
    automatyka w odlewnictwie
    robotyka w odlewnictwie
    analiza semantyczna
    wyszukiwarka semantyczna
    Opis:
    The problem of materials selection in terms of their mechanical properties during the design of new products is a key issue of design. The complexity of this process is mainly due to a multitude of variants in the previously produced materials and the possibility of their further processing improving the properties. In everyday practice, the problem is solved basing on expert or designer knowledge. The paper is the proposition of a solution using computer-aided analysis of material experimental data, which may be acquired from external data sources. In both cases, taking into account the rapid growth of data, additional tools become increasingly important, mainly those which offer support for adding, viewing, and simple comparison of different experiments. In this paper, the use of formal knowledge representation in the form of an ontology is proposed as a bridge between physical repositories of data in the form of files and user queries, which are usually formulated in natural language. The number and the sophisticated internal structure of attributes or parameters that could be the criteria of the search for the user are an important issue in the traditional data search tools. Ontology, as a formal representation of knowledge, enables taking into account the known relationships between concepts in the field of cast iron, materials used and processing techniques. This allows the user to receive support by searching the results of experiments that relate to a specific material or processing treatment. Automatic presentation of the results which relate to similar materials or similar processing treatments is also possible, which should make the conducted analysis of the selection of materials or processing treatments more comprehensive by including a wider range of possible solutions.
    Źródło:
    Archives of Foundry Engineering; 2015, 15, 2; 39-42
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Semi-solid processing method for cast iron
    Metoda przetwarzania żeliwa w stanie półstałym
    Autorzy:
    Wierzchowski, W.
    Grochal, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/391781.pdf
    Data publikacji:
    2009
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Odlewnictwa
    Tematy:
    żeliwo
    przetwarzanie w stanie półstałym
    odlewanie tiksotropowe
    globularna struktura stopów żelaza
    cast iron
    semi-solid processing
    thixocasting
    globular structure of iron alloys
    Opis:
    A device for the fabrication of ingots from cast iron of globular non-dendritic structure of the primary phase was designed and made, using the principle of overflow on the Slope Cooling Plate, known as the SCP method. Trials were made on hypoeutectic grey cast iron and high-chromium cast iron. Even during the first trials the intended effect has been achieved, which means that a fragmentation and globularization of the primary austenite was obtained. A simultaneous effect of the applied SCP technique on the shape of graphite in grey cast iron was observed.
    Zaprojektowano i skonstruowano urządzenie do wytwarzania wlewków z żeliwa o globularnej - niedendrytycznej strukturze fazy pierwotnej. W tym celu wykorzystano zasadę przepływu po płycie pochyłej, tj. metodę SCP (Slope Cooling Plate). Wykonano próby z zastosowaniem żeliwa szarego podeutektycznego i żeliwa wysokochromowego. Już w trakcie pierwszych prób osiągnięto zamierzony efekt, co oznacza, że doprowadzono do fragmentaryzacji i globularyzacji austenitu pierwotnego. Zaobserwowano równoczesny wpływ zastosowanej techniki SCP na postać grafitu w żeliwie szarym.
    Źródło:
    Prace Instytutu Odlewnictwa; 2009, 49, 4; 27-37
    1899-2439
    Pojawia się w:
    Prace Instytutu Odlewnictwa
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Advanced processing for recycling of iron scrap with impurities
    Autorzy:
    Osawa, Y.
    Takamori, S.
    Minagawa, K.
    Kakisawa, H.
    Halada, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/146109.pdf
    Data publikacji:
    2006
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    recycling
    steel scrap
    copper
    aluminum
    powder metallurgy
    cast iron
    Opis:
    The present research focuses on the recycling of steel in combination with copper or aluminum alloys. To use iron scrap with a copper content in the range of 0.5 to 15%, a water atomization process was carried out, producing a rapidly solidified powder with copper of nano-order size dispersed in it. The powder was then hot rolled in the 600°C to 1000°C temperature region, where there is no liquid phase of copper, to produce a solid body. The solid bodies obtained presented a porosity of less than 1% for all the values of temperature and copper concentration, and it was established that the proposed process can be used for a wide range of concentrations of metallic impurities. The tensile strength increased with the copper content for all the temperatures, reaching stability at a copper concentration over 5%. Rapidly solidified powder was annealed and compacted at 600°C, resulting in a reduction of strength compared to non-annealed powder. The microstructure with a finely dispersed copper content seemed to have a considerable effect on the tensile strength of the compacted bodies. In the case of the use of aluminum-containing iron scrap, the results show that addition of aluminum to cast iron increased the resistance to abrasion, the high temperature oxidation characteristics, and the vibration control characteristics. When this cast iron was kept in air at temperatures ranging from 800°C to 1000°C, it was observed that the graphite on the surface was substituted by alumina.
    Źródło:
    Nukleonika; 2006, 51,suppl.1; 113-119
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Development of hydrogen-enriched water gas production technology by processing Ekibastuz coal with technogenic waste
    Autorzy:
    Dikhanbaev, B.
    Dikhanbaev, A. B.
    Sultan, I.
    Rusowicz, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/140012.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    hydrogen-enriched water gas
    reactor of inversion phase–rotary kiln–gas generator
    cupreous cast iron
    zinc-germanium containing sublimates
    gaz wodny wzbogacony wodorem
    reaktor fazy inwersyjnej-pieca obrotowego-generatora gazu
    żeliwo miedziowe
    sublimaty zawierające cynk-german
    Opis:
    In the dumps of metallurgical enterprises of Kazakhstan about 700 million tons of waste products are generated annually, and are polluting the atmosphere and the soil. The concentration of valuable components in waste products are no lower than in natural resources. The reserves of coal in the Ekibastuz basin are estimated to be more than a billion tons, and almost half of this is made up of ash. Every year, up to 30 million tons of ash-cinder waste is generated, which presents a serious threat to nature. Gallium and germanium concentrations in dumps are approximately 200 grams per ton, which is comparable to the content in coal before processing. The current research aims at creating a unit to obtain hydrogen-enriched water gas from Ekibastuz coal, with the production of zinc, gallium and germanium sublimates, copper-containing cast iron, slag wool and cast stone, through the joint processing of zinc-rich slag and ash-cinder wastes from thermal power plants. To achieve this, we used previous methods of extreme energy saving and a new method, the smelt layer with inversion phase. Experimental results from the “reactor inversion phase – rotary kiln” (RIPh) unit, which processed zinc-germanium contained slag, showed the potential to extract germanium from zinc sublimates, to reduce iron to the form of cupreous cast iron, and to obtain combustible gases and smelt suitable for slag-wool production. Calculations performed on the joint processing of Ekibastuz coal and zinc-rich slag using the proposed unit“ reactor of inversion phase–rotary kiln–gas generator” showed it can obtain hydrogen-enriched watergas, along with the extraction of valuable components of primary raw material.
    Źródło:
    Archive of Mechanical Engineering; 2018, LXV, 2; 221-231
    0004-0738
    Pojawia się w:
    Archive of Mechanical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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