Global Patent Index - EP 0790090 B1

EP 0790090 B1 2000-06-28 - Vacuum die-casting machine

Title (en)

Vacuum die-casting machine

Title (de)

Vakuum-Druckgiessmachine

Title (fr)

Machine de coulée à dépression

Publication

EP 0790090 B1 (DE)

Application

EP 97102390 A

Priority

DE 19605727 A

Abstract (en)

[origin: EP0790090A2] A vacuum die-casting machine has a die formed of fixed and movable halves (3,4) which are sealed against one another, during evacuation and casting processes, by ,an elastic sealing element (16). The die is connected to a casting chamber (6) with a piston (7) and a suction pipe (9) for supply of melt from a holding furnace (10). Evacuation of the die cavity (5) and the casting chamber takes place by means of an evacuation unit (11). Gas entry into the furnace, during die closure is avoided by a blocking process which continues until the excess pressure in the die cavity and the interior (22) of the chamber is substantially eliminated.

IPC 1-7 (main, further and additional classification)

B22D 17/14; B22D 17/22; B22D 18/06

IPC 8 full level (invention and additional information)

B22D 17/14 (2006.01); B22D 17/22 (2006.01); B22D 18/06 (2006.01)

CPC (invention and additional information)

B22D 17/14 (2013.01); B22D 17/2227 (2013.01); B22D 18/06 (2013.01)

Designated contracting state (EPC)

CH DE FR LI

EPO simple patent family

EP 0790090 A2 19970820; EP 0790090 A3 19980708; EP 0790090 B1 20000628; DE 19605727 A1 19970821

INPADOC legal status


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