EP 0432434 B1 19940921 - Process for manufacturing joining structural parts from a fully austenitic Cr-Mn steel.
Title (en)
Process for manufacturing joining structural parts from a fully austenitic Cr-Mn steel.
Title (de)
Verfahren zur Herstellung von Verbindungselementen aus einem vollaustenitischen Cr-Mn-Stahl.
Title (fr)
Procédé de fabrication d'éléments d'assemblage en acier Cr-Mn ayant une structure complètement austénitique.
Publication
Application
Priority
DE 3940438 A 19891207
Abstract (en)
[origin: EP0432434A1] The invention relates to the processes for the production of a corrosion-resistant fully austenitic steel containing, in % by weight: max. 0.12% of C 0.20 to 1.00% of Si 17.50 to 20.00% of Mn max. 0.05% of P max. 0.015% of S 17.50 to 20.00% of Cr max. 5.00% of Mo max. 3.00% of Ni 0.80 to 1.20% of N, the remainder being iron and conventional impurities from the smelting process, in which an electrode is produced for electroslag remelting, the nitrogen content of the steel is adjusted in a pressure electroslag remelting process with melting of this electrode for the addition of nitrogen-containing materials, the steel block solidifying under pressure is then drawn out and/or rolled out to an intermediate product of 5 to 150 mm diameter, the intermediate product is then cold-worked with a reduction in total cross-section of at least 60% to give an end product of 0.5 to 90 mm diameter and the end product is then aged at temperatures of 300 to 500 DEG C for 20 minutes to 5 hours.
IPC 1-7
IPC 8 full level
B22F 3/02 (2006.01); B22F 3/14 (2006.01); B22F 3/17 (2006.01); C21D 8/00 (2006.01); C22C 30/00 (2006.01); C22C 33/02 (2006.01); C22C 33/04 (2006.01); C22C 38/00 (2006.01); C22C 38/38 (2006.01); C22C 38/58 (2006.01)
CPC (source: EP)
C22C 38/001 (2013.01); C22C 38/38 (2013.01)
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB IT LI LU NL SE
DOCDB simple family (publication)
EP 0432434 A1 19910619; EP 0432434 B1 19940921; AT E111968 T1 19941015; DE 3940438 C1 19910523; DE 59007249 D1 19941027; JP H0688160 A 19940329
DOCDB simple family (application)
EP 90120990 A 19901102; AT 90120990 T 19901102; DE 3940438 A 19891207; DE 59007249 T 19901102; JP 41416090 A 19901207