The lost foam process in pilot castings plattes

• Autorzy: Żółkiewicz Z. , Żółkiewicz M.
• Języki publikacji: EN

Abstrakty

EN

The paper discusses the process of thermal evaporation of a foundry pattern. At several research-development centres, studies have been carried out to examine the physico-chemical phenomena that take place in foundry mould filled with polystyrene pattern when it is poured with molten metal. In the technique of evaporative patterns, the process of mould filling with molten metal (the said mould holding inside a polystyrene pattern) is interrelated with the process of thermal decomposition of this pattern. The process of polystyrene pattern evaporation in foundry mould under the effect of molten metal is of a very complex nature and depends on many different factors, still not fully investigated. The technology of evaporative patterns was used in manufacture of pilot castings of the high abrasion resistance plates. The material and the properties of the resultant castings were determined by the customer (patent protection). At the beginning of the studies, the properties of the pattern material were determined, patterns were assembled, the properties of the ceramic layer were determined as well as the technique of its preparation and application. The technique of molten metal feeding to the mould cavity was examined along with the parameters of the gating and feeding system, and casting cooling and solidification conditions (large contraction, shrinkage cavities and depressions).

Słowa kluczowe

EN

lost foam platetes; pattern; polystyrene; temperature

PL

odlewanie; pełna forma; model; polistyren; temperatura

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2009
• Tom: Vol. 9, iss. 2
• Strony: 143--146
• Opis fizyczny: Bibliogr. 17 poz., rys., tab.

Twórcy

autor

Żółkiewicz Z.

autor

Żółkiewicz M.

• Instytut Odlewnictwa, ul. Zakopiańska 73, 31-418 Kraków, Polska,

Bibliografia

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