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Wyszukujesz frazę "polystyrene model" wg kryterium: Temat


Wyświetlanie 1-5 z 5
Tytuł:
Prototype Stand for Determining Quantities of Gasification Products of Polystyrene Model
Autorzy:
Jureczko, Michał
Bartocha, D.
Powiązania:
https://bibliotekanauki.pl/articles/2079785.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
lost foam
full mold
polystyrene model
research stand
technologia lost foam
pełna forma
model polistyrenowy
stanowisko badawcze
Opis:
Disposable foundry models constitute an increasingly important role in a unitary large-size foundry. These models have many benefits, but technologies using such materials require an understanding of degradation kinetics at the time of filling. The studies presented in the article determine the size of the polystyrene combustion products used for disposable foundry models. The results were obtained by carrying out the combustion process of the polystyrene model in a special combustion chamber, in different configurations. The pressures generated during thermal degradation vary depending on process parameters such as model density or the use of an additional adhesive binder. The results of laboratory tests may suggest what values of pressure are generated when filling in full-mold and lost foam technologies. The studies provide a prelude to further analysis of materials used for disposable foundry models and quantitative evaluation of their thermal degradation products for computer simulation.
Źródło:
Archives of Foundry Engineering; 2021, 21, 4; 15-20
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Aging Time Effects of the Pre-expanded Polystyrene on the Patterns Mechanical Properties
Autorzy:
Buczkowska, K.
Pacyniak, T.
Powiązania:
https://bibliotekanauki.pl/articles/381049.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
innovative casting technology
Innovative casting material
foundry
lost foam
model of polystyrene
casting
innowacyjna technologia odlewnicza
innowacyjny materiał odlewniczy
tracona piana
polistyrenowy model odlewniczy
Opis:
The aging granulate is to activate the blowing agent during the manufacturing process to granulate models can re-expand and shape the model of well-sintered granules, smooth surface and a suitable mechanical strength. The article presents the results of studies which aim was to determine the optimum time for aging pre-foamed granules for pre-selected raw materials. The testing samples were shaped in an autoclave, with constant parameters sintering time and temperature. Samples were made at 30 minute intervals. Models have been subjected to flexural strength and hardness.
Źródło:
Archives of Foundry Engineering; 2015, 15, 1; 131-137
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The analysis of the influence of the polystyrene patterns shaping parameters on the resistance properties
Autorzy:
Pacyniak, T.
Buczkowska, K.
Bogus, W.
Powiązania:
https://bibliotekanauki.pl/articles/382906.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
odlewnictwo
tracona piana
styropianowy model odlewniczy
odlew
foundry
lost foam
polystyrene patterns
casts
Opis:
This work presents the technology of making foam plastics patterns used in casting as well as the final shaping stand. The analysis of the sintering process was carried out aiming at determining the influence of the pressure and the time of sintering on the flexural strength properties. The analysis of the research results confirmed that when the sintering pressure grows to the value of Pa =1,7 bar the flexural strength also increases, when the pressure value is higher than that, the degradation of the material takes place and the strength properties decrease.
Źródło:
Archives of Foundry Engineering; 2012, 12, 2; 227-234
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The influence of the basic styrofoam patterns final shaping parameters on the resistance properties
Autorzy:
Pacyniak, T.
Buczkowska, K.
Powiązania:
https://bibliotekanauki.pl/articles/380452.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
odlewnictwo
tracona piana
styropianowy model odlewniczy
odlew
foundry
lost foam
polystyrene patterns
casts
Opis:
This work presents the analysis of the final shaping process of the patterns aimed at determining the influence of the pressure and the time of sintering on the resistance to bending. The analysis of the research results proved that when the pressure of the sintering rises and reaches Ps=2.1 bar the resistance to bending increases, above this level of the pressure the resistance value starts decreasing. The time of styrofoam sintering at which the highest bending resistance values were obtained is ts=90 s. When the sintering pressure is less than 2 bar prolongation of the time of sintering over 90 s causes a slight increase in the resistance, however, at higher pressures prolongation of the time of sintering causes submelting of the styrofoam pattern.
Źródło:
Archives of Foundry Engineering; 2012, 12, 4; 121-126
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of time and pressure of forming a pattern on mechanical properties
Autorzy:
Pacyniak, T.
Buczkowska, K.
Kaczorowski, R.
Powiązania:
https://bibliotekanauki.pl/articles/382163.pdf
Data publikacji:
2011
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
innovative foundry technology
innovative foundry material
foundry engineering
lost foam
polystyrene pattern
innowacyjna technologia odlewnicza
innowacyjny materiał odlewniczy
przemysł odlewniczy
tracona piana
styropianowy model odlewniczy
Opis:
In this paper, the technology of forming patterns on a research station equipped with an autoclave A-600 of Polish company GROM is presented. This study was conducted to determine the influence of pressure and time of forming a pattern on the bending strength. Analysis of the results confirmed that bending strength increases with increasing the pressure. The time of forming a pattern has a similar effect.
Źródło:
Archives of Foundry Engineering; 2011, 11, 3 spec.; 151-156
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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