EP 0289775 B1 19921209 - DEEP-DRAWABLE SHEET OR STRIP MADE FROM ALUMINIUM OR ALUMINIUM ALLOYS, AND PROCESS FOR ITS MANUFACTURE
Title (en)
DEEP-DRAWABLE SHEET OR STRIP MADE FROM ALUMINIUM OR ALUMINIUM ALLOYS, AND PROCESS FOR ITS MANUFACTURE
Publication
Application
Priority
DE 3713909 A 19870425
Abstract (en)
[origin: US4886713A] A deep drawable sheet or strip of metal, preferably aluminum or an aluminum alloy having a surface treated for deep drawing characterized in that the surface has a microroughness, Ra, ranging between about 0.1 and 0.8 mu m and a uniform, honeycomb-shaped structure, wherein the honeycomb diameter ranges between about 20 mu m and about 200 mu m is provided.
IPC 1-7
IPC 8 full level
B21B 1/22 (2006.01); B21B 3/00 (2006.01); B21B 27/00 (2006.01); C22F 1/00 (2006.01); C22F 1/04 (2006.01); B21B 1/28 (2006.01)
CPC (source: EP KR US)
B21B 1/227 (2013.01 - EP US); B21B 3/00 (2013.01 - EP US); C22C 1/04 (2013.01 - KR); C22F 1/04 (2013.01 - EP US); B21B 1/28 (2013.01 - EP US); B21B 2003/001 (2013.01 - EP US); B21B 2261/14 (2013.01 - EP US); Y10T 428/12993 (2015.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE ES FR GB GR IT LI LU NL SE
DOCDB simple family (publication)
EP 0289775 A2 19881109; EP 0289775 A3 19900523; EP 0289775 B1 19921209; AT E83180 T1 19921215; DE 3713909 A1 19881110; DE 3876484 D1 19930121; ES 2037756 T3 19930701; GR 3006950 T3 19930630; JP H01111850 A 19890428; KR 880012783 A 19881129; US 4886713 A 19891212
DOCDB simple family (application)
EP 88104904 A 19880326; AT 88104904 T 19880326; DE 3713909 A 19870425; DE 3876484 T 19880326; ES 88104904 T 19880326; GR 930400191 T 19930129; JP 9846088 A 19880422; KR 880004725 A 19880425; US 18553788 A 19880425