EP 0303016 B1 19911016 - METHOD OF MAKING A GAS PRESSURE VESSEL OF AUSTENITIC STAINLESS STEEL BY CRYOGENIC FORMING
Title (en)
METHOD OF MAKING A GAS PRESSURE VESSEL OF AUSTENITIC STAINLESS STEEL BY CRYOGENIC FORMING
Publication
Application
Priority
DE 3726960 A 19870813
Abstract (en)
[origin: US4846900A] The invention relates to a process for producing a compressed gas container made of austenitic steels by cryodeformation in which the container is cooled by a refrigerated cooling medium to below the prevailing martensite transformation temperature and is expanded to the desired size by the introduction of a pressure medium into the container. Trichlorofluoromethane is employed as the pressure medium.
IPC 1-7
IPC 8 full level
C21D 8/00 (2006.01); C21D 6/04 (2006.01); C21D 7/12 (2006.01)
CPC (source: EP US)
B21D 26/041 (2013.01 - EP US); B21D 26/049 (2013.01 - EP US); C21D 6/04 (2013.01 - EP US); C21D 7/12 (2013.01 - EP US)
Citation (examination)
INDUSTRIE-ANZEIGER Band 96, nR. 78, 20. september 1974, seite 1807. Essen; "Kältebehandlung von Stahl"
Designated contracting state (EPC)
AT FR GB IT
DOCDB simple family (publication)
EP 0303016 A1 19890215; EP 0303016 B1 19911016; AT E68527 T1 19911115; DE 3726960 A1 19890223; JP S6465230 A 19890310; US 4846900 A 19890711
DOCDB simple family (application)
EP 88109402 A 19880614; AT 88109402 T 19880614; DE 3726960 A 19870813; JP 19730988 A 19880809; US 22983688 A 19880808