Shaping the Structure and Properties of High Quality Silumin Castings in Metal Molds Cooled with Water Mist

• Autorzy: Władysiak R.
• Języki publikacji: EN

Abstrakty

EN

The paper presents some aspects of the theory and technology of high quality silumin castings in metal molds cooled pointed with water mist stream. The results of the work relate to improvement of the properties of silumin casts by affecting the cooling of the liquid silumin in gravity cast in metal mold and the possibility of controlling the solidification and crystallization of the casting. The high efficiency required from the cooling system is a consequence of an optimal selection of parameters of the generated mist and the maximum use of the phenomenon of water droplets evaporation on the surface of the cooled mold. The study showed that sequential spot cooling with use of water mist, characterized by a wide range of control means and a high maximum heat transfer efficiency, enables to control the flow of heat between the casting and the mold and it allows for a layered solidification leading to the realization of the entire cast solidification in the expected way: directional or simultaneous. Consequently, the results are: improvement of the quality of the castings as a result of the elimination of defects and significant reduction in shrinkage porosity in the casting, an increase of the homogeneity and fineness of the microstructure, about 25% increase in the mechanical properties.

Słowa kluczowe

EN

innovative material; casting technology; cooling; water mist; permanent mould casting

PL

materiał innowacyjny; technologia odlewnicza; chłodzenie; mgła wodna; forma odlewnicza

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2013
• Tom: Vol. 13, iss. 2 spec.
• Strony: 98--105
• Opis fizyczny: Bibliogr. 14 poz., rys., tab., wykr.

Twórcy

autor

Władysiak R.

• Department of Materials Engineering and Production Systems, Lodz University of Technology, 1/15 Stefanowskiego Street 90-924 Lodz, Poland

Bibliografia

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