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Home Material Sciences Technology of obtaining of large dimension in sand moulds

Technology of obtaining of large dimension in sand moulds castings by Lost-Foam (FULL MOULD process)

Description


Full mould process (FMP) technology permits to obtain mould castings from gray cast iron, high-strengthen cast-iron, steel and non-ferrous alloys in temporary patterns from expanded polystyrene manufactured by methods of figured carving of bulk polystyrene (γ ≤ 0,03 g/sm3) with the following gluing by synthetic glues (БФ-6 and ПВА).

Manufactured and tinted by refractory paint patterns are formed in usual casting flasks simultaneously with patterns of gating system gas withdrawal system. Selfharding mould blends on the base of quartz sand and liquid glass of synthetic gums are used as mould blend. Gasification of pattern happens in the process of pouring-in of mould by metal. Extraction of gas products of gasification is made by the special system of gas extraction into ventilation exhaust system with the subsequent after-burning. There are no limits for mass of casting.


1 –post ; 2 –slag catcher; 3 –gating runner;
4–feeders; 5 –gas extraction channels;
6 – gasified pattern.

Areas of Application

Foundry industry

Contact Details

Organization: Physico-Technological Institute of Metals and Alloys of NASU.
Address: 34/1 Vernadsky Avenue, 03680, Kiev-142, Ukraine.
Tel. (044) 444-35-15.
Fax (044) 459-50-29.
E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it

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