EP 0246986 B1 19891123 - PROCESS FOR MANUFACTURING STRIPS FROM PARTIALLY RECRYSTALLIZED ZIRCALOY 2 OR ZIRCALOY 4, AND STRIPS OBTAINED IN THIS WAY
Title (en)
PROCESS FOR MANUFACTURING STRIPS FROM PARTIALLY RECRYSTALLIZED ZIRCALOY 2 OR ZIRCALOY 4, AND STRIPS OBTAINED IN THIS WAY
Publication
Application
Priority
FR 8607760 A 19860521
Abstract (en)
[origin: US4775428A] The invention concerns a process for the production of a strip of Zircaloy 2 or 4 with an oxygen content of between 900 and 1600 ppm and with mechanical characteristics corresponding to the following three conditions: E0.2 at 315 DEG C.>/=250 MPa 'long' uniform A % at 20 DEG C.>/=4 and 'transverse' uniform A % at 20 DEG C.>/=4, wherein, after hot working of an ingot to provide a billet, said billet is cold rolled to form a strip with intermediate annealing operations, characterized in that: (a) each of the last two intermediate annealing operations is a treatment of from 0.5 min to 10 min at between 750 DEG and 650 DEG C., (b) the final heat treatment following the last rolling operation is for from 1.5 to 7 min at between 630 DEG and 590 DEG C., and (c) the strip is rolled with particular degrees of deformation for each of the last three rolling operations.
IPC 1-7
IPC 8 full level
C22C 16/00 (2006.01); C22F 1/18 (2006.01)
CPC (source: EP KR US)
C21D 9/46 (2013.01 - KR); C22C 16/00 (2013.01 - KR); C22F 1/186 (2013.01 - EP US)
Designated contracting state (EPC)
BE DE ES SE
DOCDB simple family (publication)
EP 0246986 A1 19871125; EP 0246986 B1 19891123; DE 3761023 D1 19891228; ES 2011818 B3 19900216; FR 2599049 A1 19871127; FR 2599049 B1 19880701; JP S6324048 A 19880201; JP S6410590 B2 19890222; KR 870011259 A 19871222; KR 920000526 B1 19920114; US 4775428 A 19881004; US 4881992 A 19891121
DOCDB simple family (application)
EP 87420129 A 19870518; DE 3761023 T 19870518; ES 87420129 T 19870518; FR 8607760 A 19860521; JP 12363087 A 19870520; KR 870004958 A 19870519; US 16845188 A 19880315; US 5056987 A 19870518