EP 0296074 B1 19910403 - METHOD AND APPARATUS FOR SAND CASTING COMPOSITE PARTS WITH A FIBRE INSERT IN A LIGHT ALLOY MATRIX
Title (en)
METHOD AND APPARATUS FOR SAND CASTING COMPOSITE PARTS WITH A FIBRE INSERT IN A LIGHT ALLOY MATRIX
Publication
Application
Priority
FR 8708749 A 19870611
Abstract (en)
[origin: US4889177A] The invention relates to a method and apparatus for sand molding composite articles formed of a light alloy metal and fibrous insert. A sand mold is formed containing a fibrous preform separated from the walls of the mold cavity. The mold is fed by means of a tube dipping into a liquid metallic bath therebelow. In the molding process, the pressure in the mold cavity and above the bath are reduced, and the pressure above the bath is increased to create a positive pressure differential DELTA P, thereby forcing molten metal from the bath into the mold cavity. The pressure in the mold cavity and above the bath are then increased to above atmospheric, and the pressure differential DELTA P is maintained until the metal in the mold cavity solidifies.
IPC 1-7
IPC 8 full level
B22D 18/04 (2006.01); B22D 18/08 (2006.01); B22D 19/14 (2006.01)
CPC (source: EP US)
B22D 18/08 (2013.01 - EP US); B22D 19/14 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE ES GB GR IT LI LU NL SE
DOCDB simple family (publication)
EP 0296074 A1 19881221; EP 0296074 B1 19910403; AT E62161 T1 19910415; CA 1326586 C 19940201; DE 3862247 D1 19910508; ES 2021460 B3 19911101; FR 2616363 A1 19881216; FR 2616363 B1 19910419; GR 3001726 T3 19921123; JP H0734986 B2 19950419; JP S63317246 A 19881226; US 4889177 A 19891226
DOCDB simple family (application)
EP 88420187 A 19880609; AT 88420187 T 19880609; CA 569266 A 19880610; DE 3862247 T 19880609; ES 88420187 T 19880609; FR 8708749 A 19870611; GR 900401067 T 19910404; JP 13978888 A 19880607; US 20307488 A 19880607