Title (en)

Method for manufacturing ODS seamless pipes

Title (de)

Verfahren zur Herstellung nahtloser Rohre aus ODS Werkstoffen

Title (fr)

Procédé de fabrication d'un tube ODS sans soudure

Publication

EP 0761826 B1 20010523 (DE)

Application

EP 96202345 A 19960823

Priority

AT 45795 U 19950828

Abstract (en)

[origin: EP0761826A2] Prodn. of seamless pipes made of materials forming a strongly elongated coarse grain structure by mechanical deformation in combination with a recrystallisation heat treatment is claimed. The novelty is that a bowl or sleeve starting part in non-recrystallised state is made by pressing according to DIN8583, T2 with a degree of deformation of at least 30%, into the required. pipe form, and the material is recrystallised by intermediate calcination between individual deformation steps or by a final calcination after the deformation.

IPC 1-7

C21D 8/10; C22C 38/18; C22C 19/05; C22F 1/10; C22C 32/00; B21B 19/04; B21B 23/00

IPC 8 full level

B21B 19/04 (2006.01); B21B 23/00 (2006.01); C21D 8/10 (2006.01); C22C 19/05 (2006.01); C22C 32/00 (2006.01); C22C 38/18 (2006.01); C22F 1/10 (2006.01)

CPC (source: EP)

C21D 8/105 (2013.01); C22C 19/05 (2013.01); C22C 32/0026 (2013.01); C22C 33/0207 (2013.01); C22F 1/10 (2013.01); B22F 2003/248 (2013.01); B22F 2998/00 (2013.01); B22F 2998/10 (2013.01)

C-Set (source: EP)

1. B22F 2998/00 + C22C 33/0228 + B22F 5/106
2. B22F 2998/10 + C22C 33/0207 + C22C 1/1084 + B22F 3/15 + B22F 3/24 + B22F 3/162

Designated contracting state (EPC)

AT DE ES FR GB IT SE

DOCDB simple family (publication)

EP 0761826 A2 19970312; EP 0761826 A3 19981028; EP 0761826 B1 20010523; AT 902 U1 19960725; AT E201456 T1 20010615; DE 59606939 D1 20010628; ES 2158234 T3 20010901

DOCDB simple family (application)

EP 96202345 A 19960823; AT 45795 U 19950828; AT 96202345 T 19960823; DE 59606939 T 19960823; ES 96202345 T 19960823