EP 1201775 B1 20040728 - Process of manufacturing cylindrical hollow bodies and the use thereof
Title (en)
Process of manufacturing cylindrical hollow bodies and the use thereof
Title (de)
Verfahren zur Herstellung zylindrischer Hohlkörper und Verwendung derselben
Title (fr)
Procédé de fabrication de corps cylindriques creux et leur utilisation
Publication
Application
Priority
AT 18222000 A 20001024
Abstract (en)
[origin: EP1201775A1] Production of cylindrical hollow bodies having a circular cross-section comprises forming a tube blank from a remelting ingot; molding to a tubular body by extrusion with a degree of deformation of at least 6 times; and optionally further processing. Preferred Features: The remelting ingot is made from a corrosion resistant martensitic steel containing (in wt.%) 12-29 Cr, 0.02-5.9 Mo, 0.05-0.8 C and 0.05-0.8 N; or 0.3-3.0 Mn, 12.1-28.0 Cr, 0.25-5.8 Mo, 0.01-3.0 Ni, 0.05-2.0 V, 0.15-0.7 C and 0.15-0.7 N.
IPC 1-7
IPC 8 full level
B21C 23/08 (2006.01); B21C 37/06 (2006.01); C21D 8/10 (2006.01)
CPC (source: EP US)
B21C 37/06 (2013.01 - EP US); C21D 8/105 (2013.01 - EP US); Y10T 29/49336 (2015.01 - EP US); Y10T 29/49689 (2015.01 - EP US); Y10T 29/49709 (2015.01 - EP US); Y10T 29/5199 (2015.01 - EP US)
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
EP 1201775 A1 20020502; EP 1201775 B1 20040728; AT 413195 B 20051215; AT A18222000 A 20050515; AT E272127 T1 20040815; CA 2359294 A1 20020424; CA 2359294 C 20080708; DE 50102983 D1 20040902; ES 2225463 T3 20050316; US 2002104213 A1 20020808; US 7181847 B2 20070227
DOCDB simple family (application)
EP 01890291 A 20011010; AT 01890291 T 20011010; AT 18222000 A 20001024; CA 2359294 A 20011018; DE 50102983 T 20011010; ES 01890291 T 20011010; US 98349701 A 20011024