EP 0133515 B1 19861015 - PROCESS FOR MANUFACTURING PREFORMS BY COLD ISOSTATIC PRESSING
Title (en)
PROCESS FOR MANUFACTURING PREFORMS BY COLD ISOSTATIC PRESSING
Publication
Application
Priority
DE 3328954 A 19830811
Abstract (en)
[origin: US4582682A] A thin-walled elastic envelope or mold element is arranged within a divisible outer supporting mold of porous material and a vacuum is applied to the outer supporting mold. Thereupon powdered metal or ceramic is introduced into the elastic mold element and the mold element is closed and pressurized to form a preform. The preform is then subjected to cold isostatic pressurization which is applied to the outer surface of the elastic mold element. Prior to the cold isostatic pressurization, the vacuum applied to the outer supporting mold is terminated and a vacuum is produced within the elastic mold element.
IPC 1-7
IPC 8 full level
B22F 3/04 (2006.01); B28B 3/00 (2006.01); B30B 5/02 (2006.01); B30B 11/00 (2006.01)
CPC (source: EP US)
B22F 3/04 (2013.01 - EP US); B30B 11/001 (2013.01 - EP US); Y10S 264/78 (2013.01 - EP US); Y10S 425/044 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB IT SE
DOCDB simple family (publication)
EP 0133515 A2 19850227; EP 0133515 A3 19850417; EP 0133515 B1 19861015; DE 3328954 C1 19850131; DE 3460940 D1 19861120; JP H0337477 B2 19910605; JP S6056499 A 19850402; US 4582682 A 19860415
DOCDB simple family (application)
EP 84108782 A 19840725; DE 3328954 A 19830811; DE 3460940 T 19840725; JP 16275784 A 19840731; US 63637184 A 19840731