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Attempts to Prepare Precision Composite Castings by Sintering Al2O3/AlSi11 Using Underpressure

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Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
This article presents the preparation of composite casts made using the technology of precise casting by the method of melted models. The composite was reinforced with the ceramic sinter from Al2O3 particle shaped in a printed polystyrene female mould, which was fired together with precured ceramics. The resulting ceramic preform, after being saturated with paraffin and after the filling system is installed, was filled with liquid moulding sand and fired together with the mould. The reinforcement was saturated by means of the counter-pressure exerting action on the metal column, being a resultant of pressures inside and outside the chamber. The preliminary assessment showed no apparent defects in the shape of the cast. The casting was measured and the figures were compared with the dimensions of the matrix in which the reinforcing preform was made, the preform after firing and after saturation with paraffin. The results were presented in a table and dimensional deviations were determined. The composite casting was subjected to metallographic tests, which excluded any porous defects or damage to the reinforcement. It can therefore be said that, according to the predictions resulting from the previous calculations, the pressure values used allowed for complete filling of the reinforcement capillaries. The proposed method is therefore suitable for the preparation of precision composite castings with complex shapes.
Rocznik
Strony
49--54
Opis fizyczny
Bibliogr. 28 poz., fot., rys., tab.
Twórcy
  • Poznan University of Technology, Institute of Materials Technology, Poznań, Poland
autor
  • Poznan University of Technology, Institute of Materials Technology, Poznań, Poland
Bibliografia
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  • [11] Naplocha, K. (2013). Composite materials reinforced with preforms produced in the high-temperature synthesis process in the microwave field. Wrocław: Oficyna Wydawnicza Politechniki Wrocławskiej. (in Polish).
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Uwagi
PL
Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2020).
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-730be4ab-5b6c-4908-9eae-340fc12a138c
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