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    Wyświetlanie 1-7 z 7
    Tytuł:
    Reclamation of mixtures of spent sands of inorganic and organic type
    Autorzy:
    Skrzyński, M.
    Dańko, R.
    Kamińska, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/381461.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    reclamation
    foundry sand
    moulding sand
    environmental protection
    regeneracja
    masa formierska
    ochrona środowiska
    Opis:
    The results of investigations of the reclamation of spent moulding and core sands, originated from one of the Polish foundry plants, are presented in the paper. Four mixtures consisting of two types of spent sands (spent moulding sand and spent core sand) were subjected to the regeneration process. Each tested mixture consisted of an inorganic type spent moulding sand and of an organic type spent core sand. Proportions of mutual fractions of spent moulding and core sands in mixtures was 70%-30% and was representative for the waste sands from the foundry, from which these sands originated.
    Źródło:
    Archives of Foundry Engineering; 2013, 13, 4; 93-96
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Reclamation of spent moulding sands with inorganic binders in the vibratory reclaimer REGMAS
    Regeneracja masy zużytej ze spoiwem nieorganicznym w regeneratorze wibracyjnym REGMAS
    Autorzy:
    Dańko, J.
    Kamińska, J.
    Skrzyński, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/355492.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    moulding sand
    modified water-glass sand
    reclamation
    Floster S technology
    masa formierska
    regeneracja masy formierskiej
    szkło wodne
    technologia floster S
    Opis:
    The results of the reclamation of spent moulding sands with inorganic binder in the prototype vibratory reclaimer REGMAS - are presented in the paper. Spent moulding sands with modified water-glass, burned as well as not burned, present in a form of agglomerates (lumps), were subjected to the reclamation processes. During individual reclamation cycles the reclaimer efficiency and vibrations amplitudes were determined and physicalchemical and strength investigations were performed for the obtained reclaim materials. The obtained reclaim was used as a component of the matrix of moulding sands with water-glass in the Floster S technology, in which the reclaim constituted 100%, 80% and 50% of the sand matrix - respectively.
    W artykule przedstawiono wyniki regeneracji zużytej masy formierskiej ze spoiwem nieorganicznym w prototypowym regeneratorze wibracyjnym REGMAS. Procesowi regeneracji poddano zarówno masę zużytą ze szkłem wodnym modyfikowanym przepaloną oraz nieprzepaloną masę zużytą występującą w postaci brył. W trakcie realizacji poszczególnych cykli regeneracji określano wydajność regeneratora oraz amplitudę wibracji, dla których przeprowadzono badania fizykochemiczne oraz wytrzymałościowe otrzymanych regeneratów. Wykonano następujące badania: zawartość pyłów w regeneracie UK , analizę sitową osnowy oraz laserową analizę granulometryczną oddzielonych pyłów, odczyn pH, stratę prażenia oraz zawartość Na2O regeneratu. Uzyskany regenerat użyto jako składnik osnowy mas formierskich ze szkłem wodnym w technologii floster S, w których stanowił odpowiednio 100%, 80% oraz 50% osnowy piaskowej.
    Źródło:
    Archives of Metallurgy and Materials; 2013, 58, 3; 993-996
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of Bentonite Clay Addition on the Thermal and Mechanical Properties of Conventional Moulding Sands
    Autorzy:
    Kamińska, J.
    Puzio, S.
    Angrecki, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/383048.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    bentonite
    bentonite clay
    moulding sand
    montmorillonite
    strength properties
    bentonit
    glinka bentonitowa
    piasek formierski
    montmorylonit
    właściwości wytrzymałościowe
    Opis:
    Bentonites and clays are included in the group of drilling fluids materials. The raw materials are mainly clay minerals, which are divided into several groups, like montmorillonite, kaolinite, illite, biotite, muscovite, nontronite, anorthoclase, microcline, sanidine or rutile, differing in chemical composition and crystal lattice structure. Clay minerals have a layered structure forming sheet units. The layers merge into sheets that build up to form the structure of the mineral. The aim of the studies carried out in the ŁUKASIEWICZ Research Network - Foundry Research Institute is to explore the possibility of using minerals coming from Polish deposits. The article outlines the basic properties of hybrid bentonites, which are a mixture of bentonite clay called beidellite, originating from overburden deposits of the Turoszów Mine, and foundry bentonite from one of the Slovak deposits. As part of the physico-chemical tests of minerals, measurements included in the PN-85/H-11003 standard, i.e. montmorillonite content, water content and swelling index, were carried out. Additionally, the loss on ignition and pH chemical reaction were determined. Based on the thermal analysis of raw materials, carried out in the temperature range from 0 to 1000⁰C, changes occurring in these materials during heating, i.e. thermal stability in contact with liquid metal, were determined. Examinations of the sand mixture based on pure clay and bentonite and of the sand mixture based on hybrid bentonites enabled tracing changes in permeability, compressive strength and tensile strength in the transformation zone as well as compactability referred to the clay content in sand mixture. Selected technological and strength parameters of synthetic sands are crucial for the foundry, because they significantly affect the quality of the finished casting. Based on the analysis of the results, the optimal composition of hybrid bentonite was selected.
    Źródło:
    Archives of Foundry Engineering; 2020, 20, 1; 111-116
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Influence of the Modified Ablation Casting on Casts Properties Produced in Microwave Hardened Moulds with Hydrated Sodium Silicate Binder
    Autorzy:
    Major-Gabryś, K.
    Hosadyna-Kondracka, M.
    Puzio, S.
    Kamińska, J.
    Angrecki, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/352738.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    moulding sand
    ablation casting
    hydrated sodium silicate
    microwave hardening
    mechanical properties of casting
    Opis:
    The ablation casting technology consists in pouring castings in single-use moulds made from the mixture of sand and water-soluble binder. After pouring the mould with liquid metal the mould is destructed (washed out) using a stream of cooling medium, which in this case is water. The process takes place while the casting is still solidifying. The following paper focuses on testing the influence of the modified ablation casting of aluminum alloy on casts properties produced in moulds with hydrated sodium silicate binder. The authors showed that the best kind of moulding sands for Al alloy casting will be those hardened with physical factors – through dehydration. The analysis of literature data and own research have shown that the moulding sand with hydrated sodium silicate hardened by dehydration is characterized by sufficient strength properties for the modified ablation casting of Al alloys. In the paper the use of microwave hardened moulding sands has been proposed. The moulds were prepared in the matrix specially designed for this technology. Two castings from the AlSi7Mg alloy were made; one by traditional gravity casting and the other by gravity casting using ablation. The conducted casts tests showed that the casting made in modified ablation casting technology characterizes by higher mechanical properties than the casting made in traditional casting technology. In both experimental castings the directional solidification was observed, however in casting made by ablation casting, dimensions of dendrites in the structure at appropriate levels were smaller.
    Źródło:
    Archives of Metallurgy and Materials; 2020, 65, 1; 497-502
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Moulding Sand with Inorganic Cordis Binder for Ablation Casting
    Autorzy:
    Hosadyna-Kondracka, M.
    Major-Gabryś, K.
    Kamińska, J.
    Grabarczyk, A.
    Angrecki, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/382039.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    innovative foundry technology
    innovative foundry material
    ablation casting
    moulding sand
    inorganic binder
    thermal curing
    innowacyjna technologia odlewnicza
    innowacyjny materiał odlewniczy
    odlewanie ablacyjne
    masa formierska
    spoiwo nieorganiczne
    utwardzanie termiczne
    Opis:
    The essence of ablation casting technology consists in pouring castings in single-use moulds made from the mixture of sand and a water-soluble binder. After pouring the mould with liquid metal, while the casting is still solidifying, the mould destruction (washing out, erosion) takes place using a stream of cooling medium, which in this case is water. This paper focuses on the selection of moulding sands with hydrated sodium silicate for moulds used in the ablation casting. The research is based on the use of Cordis binder produced by the Hüttenes-Albertus Company. It is a new-generation inorganic binder based on hydrated sodium silicate. Its hardening takes place under the effect of high temperature. As part of the research, loose moulding mixtures based on the silica sand with different content of Cordis binder and special Anorgit additive were prepared. The reference material was sand mixture without the additive. The review of literature data and the results of own studies have shown that moulding sand with hydrated sodium silicate hardened by dehydration is characterized by sufficient strength properties to be used in the ablation casting process. Additionally, at the Foundry Research Institute in Krakow, preliminary semi-industrial tests were carried out on the use of Cordis sand technology in the manufacture of moulds for ablation casting. The possibility to use these sand mixtures has been confirmed in terms of both casting surface quality and sand reclamation.
    Źródło:
    Archives of Foundry Engineering; 2018, 18, 4; 110-115
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Effect of Additive "B" on the Properties of CO2-Hardened Foundry Sands with Hydrated Sodium Silicate
    Autorzy:
    Kamińska, J.
    Angrecki, M.
    Palma, A.
    Jakubski, J.
    Wildhirt, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/352315.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    foundry industry
    moulding sand
    hydrated sodium silicate
    additive “B”
    Opis:
    The results of own studies concerning the application of a new additive to the CO2-hardened sodium water glass foundry sands are presented. The new additive, which is a composition of aqueous solutions of modified polyalcohols, has been designated by the symbol “B” and is used as an agent improving the sand knocking out properties. The scope of studies included various mechanical and technological properties of foundry sand mixtures, such as permeability, friability, life cycle of cores and knocking out properties. Two types of water glass with different values of the silica modulus and density, designated as R145 and R150, were tested. Moulding sands used in the tests were made with the additive “B”. For comparison, a reference sand mixture with water glass but without the additive “B” was also prepared.
    Źródło:
    Archives of Metallurgy and Materials; 2017, 62, 3; 1637-1641
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Effect of Additive "B" on the Properties of Foundry Sands with Hydrated Sodium Silicate Made by Floster Technology
    Autorzy:
    Izdebska-Szanda, I.
    Kamińska, J.
    Angrecki, M.
    Palma, A.
    Stefański, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/379919.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    moulding sand
    water glass
    floster S technology
    additive
    masa formierska
    szkło wodne
    technologia floster S
    dodatki do mas formierskich
    Opis:
    The aim of the study was to determine the applicability of a new product added to water glass-containing foundry sands hardened with ethylene glycol diacetate. The new additive designated by the symbol "B" is a composition of aqueous solutions of modified polyalcohols, improving the sand knocking out properties. The scope of studies included testing various mechanical and technological properties of foundry sand mixtures, such as permeability, friability, life cycle of cores and knocking out properties. In the technological studies, two types of water glass with different values of the silica modulus and density, designated as R145 and R150, were used. Moulding sands were prepared with the additive "B". For comparison, reference sands with water glass but without the additive "B" were also made. In Part I of the article, the results of studies of the effect of additive "B" on the properties of foundry sands with water glass hardened by CO2 blowing were discussed.
    Źródło:
    Archives of Foundry Engineering; 2017, 17, 2; 31-34
    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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