Title (en)

Investment casting process and mould.

Title (de)

Feingiessverfahren und Form.

Title (fr)

Procédé pour le moulage de précision et moule.

Publication

EP 0084234 A1 19830727 (EN)

Application

EP 82306628 A 19821213

Priority

GB 8137945 A 19811216

Abstract (en)

In the investment casting of hollow parts in a shell mould or in a block mould a slender core (2) is supported by means of chaplets (7) in an outer mould part (1). The chaplets are made of expanded metal and are preferably bent to form a 'C', 'V' or 'U' shaped cross section. This form of chaplet provides for good support whilst promoting diffusion thereof during the casting of the molten metal in the mould.

IPC 1-7

B22C 7/02; B22C 9/04; B22C 9/06; B22C 9/24

IPC 8 full level

B22C 7/02 (2006.01); B22C 9/04 (2006.01); B22C 9/06 (2006.01); B22C 21/14 (2006.01)

CPC (source: EP)

B22C 7/02 (2013.01); B22C 9/04 (2013.01); B22C 9/06 (2013.01); B22C 21/14 (2013.01)

Citation (search report)

• [Y] DE 2536751 A1 19760304 - UNITED TECHNOLOGIES CORP
• [Y] DE 1917476 U 19650610 - HOWE SOUND CO [US]
• [A] US 3981344 A 19760921 - HAYES DOUGLAS R, et al
• [A] US 4283835 A 19810818 - OBROCHTA FRANK T, et al
• [A] GB 2053757 A 19810211 - ROLLS ROYCE

Designated contracting state (EPC)

BE DE FR IT NL SE

DOCDB simple family (publication)

EP 0084234 A1 19830727; GB 2111881 A 19830713

DOCDB simple family (application)

EP 82306628 A 19821213; GB 8235678 A 19821215