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    Wyświetlanie 1-8 z 8
    Tytuł:
    Badania wstępne dwustopniowego systemu mechanicznej regeneracji masy zużytej z technologii ALPHASET
    Preliminary Studies of Two-Stage Mechanical Reclamation of Used ALPHASET Sand
    Autorzy:
    Czapla, P.
    Dańko, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/382437.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    regeneracja
    masa zużyta
    regenerat
    odzysk
    regeneration
    mass consumed
    reclaimed
    salvage
    Opis:
    W publikacji przedstawiono wyniki badań regeneratu, uzyskanego w przemysłowym, II-stopniowym systemie mechanicznej regeneracji masy zużytej z technologii ALPHASET, na etapie jego rozruchu technologicznego. Dodatkowo w AGH, w dostępnych urządzeniach laboratoryjnych i półprzemysłowych, przeprowadzono badania możliwości stosowania zwiększonej intensywności przebiegu regeneracji, stanowiące punkt wyjścia do optymalizacji procesu realizowanego w skali przemysłowej. W ramach badań określano podstawowe parametry definiujące średnią wielkość ziarna regeneratu, wartość straty prażenie oraz wskaźnik skuteczności regeneracji. Przeprowadzone prace pozwoliły na przedstawienie wstępnych wytycznych odnośnie do oczekiwanego efektu regeneracji II stopniowej w systemie przemysłowym.
    The paper presents the results of the reclaim quality investigations originated from ALPHASET technology. Used sand was subjected to mechanical reclamation during two-stage mechanical treatment. Finally the reclaim was achieved in industrial device USR in the stage of its start-up. Additionally at the AGH reclamation pilot plant facilities a study of possibility of increased intensity of the reclamation treatment of the tested used sand were performed. The goal of these tests was to obtain guidance for optimization of the process performed in an industrial scale. The study determined the basic parameters defining the average grain size of the reclaim, the loss on ignition and the rate of regeneration efficiency. The executed work made it possible to present the preliminary guidelines on the expected effect of the sand recovery in the two-stage industrial system.
    Źródło:
    Archives of Foundry Engineering; 2014, 14, 2 spec.; 11-16
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Determining the Degree of Removal of Copper From Slag
    Autorzy:
    Bydałek, A. W.
    Migas, P.
    Wołczyński, W.
    Biernat, S.
    Bydałek, A.
    Jasińska, K.
    Kwapisiński, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/381015.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    post process slag
    copper recovery
    coagulation
    żużel poobróbkowy
    odzysk miedzi
    proces koagulacji
    Opis:
    The scope of work included the launch of the process of refining slag suspension in a gas oven using a variety of technological additives. After the refining process (in the context of copper recovery), an assessment of the effect of selected reagents at the level of the slag refining suspension (in terms of copper recovery). Method sieve separated from the slag waste fraction of metallic, iron - silicate and powdery waste. Comparison of these photographs macroscopic allowed us to evaluate the most advantageous method of separating metallic fraction from the slag. After applying the sample A (with KF2 + NaCl) we note that in some parts of the slag are still large amounts of metallic fraction. The fraction of slag in a large majority of the elements has the same size of 1 mm, and a larger portion of the slag, the size of which is from 2 to 6 mm. Definitely the best way is to remove the copper by means of the component B (with NaCl ) and D (with KF2). However, as a result of removing the copper by means of component C (with CaO) were also obtained a relatively large number of tiny droplets of copper, which was problematic during segregation. In both cases we were able to separate the two fractions in a fast and simple manner.
    Źródło:
    Archives of Foundry Engineering; 2016, 16, 4; 41-46
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Investigations of the Reclamation Ability of Moulding Sands with the Modified Binding System and the Reclaim Quality Assessment
    Autorzy:
    Bobrowski, A.
    Dańko, R.
    Holtzer, M.
    Drożyński, D.
    Skrzyński, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/380847.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    moulding sand
    geopolymer binder
    reclaim
    hardeners
    reclaim quality
    masa formierska
    spoiwo
    odzysk
    utwardzacze
    jakość odzysku
    Opis:
    The investigation results of the reclaiming ability of a spent moulding sand with the geopolymer Geopol developed by the SAND TEAM Company as well as a moulding sand with a modified binding system based on the geopolymer binder and new hardener offered by the KRATOS Company, are presented in the paper. The basic aim of investigations was the comparison of the reclaiming ability of spent moulding sands with additions of hardeners supplied by various producers. All hardeners were of the same hardening rate. Amounts of the geopolymer binder and of the hardener was the same for both tested moulding sands.
    Źródło:
    Archives of Foundry Engineering; 2014, 14, 1 spec.; 31-36
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Influence of Reclaim Addition on the Emission of PAHs and BTEX from Moulding Sands with Furfuryl Resin with the Average Amount of Furfuryl Alcohol
    Autorzy:
    Holtzer, M.
    Żymankowska-Kumon, S.
    Bobrowski, A.
    Dańko, R.
    Kmita, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/383161.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    environment protection
    foundry
    moulding sands
    BTEX
    PAHs
    reclaim
    ochrona środowiska
    odlewnia
    masa formierska
    odzysk
    Opis:
    In this paper, the results of decomposition of the moulding sand with furan-formaldehyde resin (with middle content of furfuryl alcohol about 50 %) also on a quartz matrix and with additions of a reclaimed material, under industrial conditions, are presented. Investigations of the gases emission in the test foundry plant were performed according to the original method developed in the Faculty of Foundry Engineering, AGH UST. The dependence of the emitted PAHs and BTEX group substances and ignition losses on the reclaim fraction in a moulding sand are of a linear character of a very high correlation coefficient R2. On the bases of the derived equations, it is possible to determine the amount of the emitted hazardous substances from the moulding sand containing the known fraction of the reclaim.
    Źródło:
    Archives of Foundry Engineering; 2014, 14, 1 spec.; 37-42
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Influence of the Thermal Reclamation of the Spent Core Sand Matrix on Its Reuse
    Autorzy:
    Łucarz, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/380885.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    thermal reclamation
    spent sand
    thermal reclaimer
    hot-box technology
    regeneracja cieplna
    usuwanie piasku
    odzysk
    technologia hot-box
    Opis:
    The investigation results of the thermal reclamation of spent core sands made in the hot-box technology are presented in the paper. Energy-consumption of the process was tested by recording the media consumption during the thermal treatment of the determined intensity. Gas demands in dependence of the reclamation process temperatures were compared. During the reclamation process the reclaimed material samples were taken to test ignition losses in order to determine the efficiency of the realised procedures. The influence of the reclamation temperature on the quality of the obtained reclaimed material was checked. The effects of the realised reclamation procedures of the same moulding sand at various temperatures were also assessed on the grounds of strength of moulding sands prepared on the bases of the obtained reclaims. It was found that the process energy-consumption can depend on the expected core sand parameters. The attention was drawn to the fact, that bearing of costs for the thermal reclamation - very often - does not correspond directly with the obtained effects. The thermal reclamation performed very intensively, which corresponds with the costs increase, is not always needed for obtaining the core sand of parameters comparable with the sand made of fresh components.
    Źródło:
    Archives of Foundry Engineering; 2014, 14, 1 spec.; 27-30
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A Study of Microstructure and Porosity Formation in High-Pressure Die-Casting
    Autorzy:
    Matejka, Marek
    Bolibruchová, D.
    Podprocká, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/2126896.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    Al-Si-Cu alloy
    high-pressure die casting
    returnable material
    numerical simulation
    porosity
    microstructure
    stop Al-Si-Cu
    odlewanie wysokociśnieniowe
    odzysk materiału
    symulacja numeryczna
    porowatość
    mikrostruktura
    Opis:
    The technology of high-pressure die-casting (HPDC) of aluminum alloys is one of the most used and most economical technology for mass production of castings. High-pressure die-casting technology is characterized by the production of complex, thin-walled and dimensionally accurate castings. An important role is placed on the effective reduction of costs in the production process, wherein the combination with the technology of high-pressure die-casting is the possibility of recycling using returnable material. The experimental part of the paper focuses on the analysis of a gradual increase of the returnable material amount in combination with a commercial purity alloy for the production of high-pressure die-castings. The returnable material consisted of the so-called foundry waste (defective castings, venting and gating systems, etc.). The first step of the experimental castings evaluation consisted of numerical simulations, performed to determine the points of the casting, where porosity occurs. In the next step, the evaluation of areal porosity and microstructural analysis was performed on experimental castings with different amounts of returnable material in the batch. The evaluation of the area porosity showed only a small effect of the increased amount of the returnable material in the batch, where the worst results were obtained by the casting of the alloy with 90% but also with 55% of the returnable material in the batch. The microstructure analysis showed that the increase in returnable material in the batch was visibly manifested only by a change in the morphology of the eutectic Si.
    Źródło:
    Archives of Foundry Engineering; 2021, 21, 4; 127--130
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Modern cored wire injection 2PE-9 method in the production of ductile iron
    Autorzy:
    Guzik, E.
    Wierzchowski, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/382516.pdf
    Data publikacji:
    2012
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    drut proszkowy
    żeliwo sferoidalne
    właściwości mechaniczne
    odzysk magnezu
    drum ladle
    cored wire injection method
    ductile iron
    Fesi + Mg nodulariser mixture
    inoculant master alloy
    mechanical properties
    magnesium recovery
    vertical ladle
    Opis:
    The results of studies on the use of modern two cored wires injection method for production of nodular graphite cast iron with use of unique implementation of drum ladle as a treatment/transport and casting ladle instead vertical treatment ladle was described. The injection of length of [...] 9mm wires, cored: in FeSi + Mg nodulariser mixture and inoculant master alloy is a treatment method which can be used to produce iron melted in coreless induction furnace. This paper describes the results of using this method for possibility production of ductile iron under specific industrial conditions. In this case was taken ductile iron with material designation: EN-GJS-450-10 Grade according PN-EN 1563:2000. Microstructure of 28 trials was controlled on internally used sample which has been correlated with standard sample before. The paper presents typical metallic matrix and graphite characteristic. Additionally, mechanical properties were checked in one experiment. Because of further possibility treatment temperature reduction only the rough magnesium recovery and cost of this new method are given.
    Źródło:
    Archives of Foundry Engineering; 2012, 12, 2; 25-28
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Using cored wires injection 2PE-9 method in the production of ferritic Si-Mo ductile iron castings
    Autorzy:
    Guzik, E.
    Wierzchowski, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/380316.pdf
    Data publikacji:
    2012
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    drut proszkowy
    żeliwo sferoidalne
    zaprawa modyfikująca
    właściwości mechaniczne
    odzysk magnezu
    drum ladle
    cored wires injection 2PE-9 method
    Si-Mo ductile iron
    Fesi + Mg nodulariser mixture
    inoculant master alloy
    ferritic matrix
    mechanical properties
    magnesium recovery
    vertical ladle
    Opis:
    The results of studies on the use of modern two cored wires injection method for production of ferritic nodular cast iron (ductile iron) with use of unique implementation of drum ladle as a treatment / transport and casting ladle instead vertical treatment ladle was described. The injection of length of [...] 9mm wires, cored: in FeSi + Mg nodulariser mixture and inoculant master alloy is a treatment method which can be used to produce iron melted in coreless induction furnace. This paper describes the results and analysis of using this method for optimal production of ductile iron under specific industrial conditions. It means, that length of nodulariser wire plus treatment and pouring temperatures were optimized. In this case, was taken ductile iron with material designation: EN-GJS-SiMo40-6 Grade according EN 16124:2010 E. Microstructure of great number of trials was controlled on internally used sample which has been correlated with standard sample before. The paper presents typical ferritic metallic matrix and nodular graphite. Additionally, mechanical properties were checked in some experiments. Mean values of magnesium recovery and cost of this new method from optimized process parameters were calculated as well.
    Źródło:
    Archives of Foundry Engineering; 2012, 12, 4; 53-56
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-8 z 8

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