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Wyszukujesz frazę "Vasková, I." wg kryterium: Autor


Wyświetlanie 1-4 z 4
Tytuł:
The dependence of castings quality produced in clay moulding mixtures from the properties of binder based on a montmorillonite
Autorzy:
Vasková, I.
Fecko, D.
Malik, J.
Powiązania:
https://bibliotekanauki.pl/articles/380359.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
jakość odlewu
masa formierska
bentonit
montmorillonit
casting quality
clay moulding mixture
bentonite
montmorillonite
Opis:
Casting quality depends on many factors including the quality of the input materials, technology, material securing and last but not least, the mould into which the casting is casted. By pouring into a single-shot mould, based mainly on 1st generation binders, is is a very important factor. Basically, a bentonite mixture represents either a three- or four-component system, but each component of the system is a heterogeneous substance. This heterogeneity punctuates mainly a non-stationary heat field, presented throughout the whole process of the casting production. The most important component is a binder and in the case of first generation binders mostly bentonites are used - clays that contain minimum of 80% of montmorillonite.
Źródło:
Archives of Foundry Engineering; 2012, 12, 3; 123-128
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Homogenity of die casting and returning material
Autorzy:
Malik, J.
Vasková, I.
Fecko, D.
Futáš, P.
Powiązania:
https://bibliotekanauki.pl/articles/382774.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
krystalizacja
innowacyjne technologie odlewnicze
innowacyjne materiały odlewnicze
odlewanie ciśnieniowe
maszyna ciśnieniowa
theory of crystallization
innovative foundry technologies
innovative foundry material
die casting
die casting machine
returning material
Opis:
Homogeneity of die castings is influenced by wide range of technological parameters as piston velocity in filling chamber of die casting machine, filling time of mould cavity, temperature of cast alloy, temperature of the mould, temperature of filling chamber, surface pressure on alloy during mould filling, final pressure and others. Based on stated parameters it is clear, that main parameters of die casting are filling time of die mould cavity and velocity of the melt in the ingates. Filling time must ensure the complete filling of the mould cavity before solidification process can negatively influence it. Among technological parameters also belong the returning material, which ratio in charge must be constrained according to requirement on final homogeneity of die castings. With the ratio of returning material influenced are the mechanical properties of castings, innerhomogeneity and chemical composition.
Źródło:
Archives of Foundry Engineering; 2012, 12, 2; 61-64
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Usage of connor inlets to eliminate shrinkage
Autorzy:
Fecko, D.
Vasková, I.
Eperješi, L'.
Závodný, M.
Powiązania:
https://bibliotekanauki.pl/articles/380256.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
żeliwo szare
eliminacja skurczu
oprogramowanie symulacyjne
grey cast iron
connor inlet
shrinkage elimination
simulation software
Opis:
The demand for castings of high quality and sound work is nowadays very high. The production of sound castings without foundry errors is the big issue in modern foundries. Foundry simulation software can do a lot to help improve the disposition of castings, gating system and feeder system, and assure good filling and solidification conditions, and also produce sound casting without the need of the old method of 'try and error'. One can easily change a lot of parameters for filling and solidification, and create the best proposal for production. Connor inlets have two functions. One is that it serves as an ingate, through which molten metal passes and comes into the mould cavity. The second function is that it serves as a feeder and substitutes the metal contracted during solidification and cooling of the castings. It can also save quite a lot of metal in comparison to classic feeders.
Źródło:
Archives of Foundry Engineering; 2012, 12, 3; 25-28
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Increasing of Utility Properties of Grey Cast Iron Castings with Heat Treatment
Autorzy:
Eperješi, Š.
Malik, J.
Vasková, I.
Fecko, D.
Powiązania:
https://bibliotekanauki.pl/articles/380865.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
grey cast iron
heat treatment
hardening capacity
austenite
martensite
żeliwo szare
obróbka cieplna
austenit
martenzyt
Opis:
Grey cast iron belongs to materials for casting production, which have wide application for different industry branches. Wide spectrum of properties of these materials is given by the structure of base metal matrix, which can be influenced with heat treatment. Processes of annealing can be applied for grey cast iron without problems. During heat treatment processes, where higher cooling rates are used, the thermal and structural strains become important. Usage and conditions of such heat treatment for grey cast iron castings of common production are the subject of evaluation of this article.
Źródło:
Archives of Foundry Engineering; 2015, 15, 2; 13-16
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-4 z 4

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