Title:
ALUMINUM ALLOY SHEET FOR CAP, AND ITS MANUFACTURE
Document Type and Number:
Japanese Patent JP3792001
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide an aluminum alloy sheet excellent in strength and tearing resistance, reduced in earing rate, and capable of reducing manufacturing costs, and its manufacture.
SOLUTION: The aluminum alloy sheet for cap has a composition consisting of, by weight, 0.80-1.5% Mg, 0.80-1.30% Mn, 0.20-0.70% Fe, 0.10-0.50% Si, and the balance Fe with inevitable impurities. This aluminum alloy sheet has a earing rate of 0.5-1.5%, by earing in 45° direction, at 1.92 drawing ratio. Further, in the case of drawing at <2 drawing ratio, the amount of thickness deviation of the wall on the cap side is <0.03 mm at the maximum and a peak-trough difference occurring in the peripheral direction of the cap is 0.3 mm. This aluminum alloy sheet can be produced by means of process annealing after cold rolling, subsequent cold rolling at 5-20% rolling rate, and further finish annealing at <250°C.
Inventors:
Kazuhide Matsumoto
Takashi Inaba
Takashi Inaba
Application Number:
JP9395097A
Publication Date:
June 28, 2006
Filing Date:
April 11, 1997
Export Citation:
Assignee:
KABUSHIKI KAISHA KOBE SEIKO SHO
International Classes:
C22C21/06; C22F1/00; C22C21/00; C22F1/04; (IPC1-7): C22C21/06; C22C21/00; C22F1/04; //C22F1/00; C22F1/00; C22F1/00
Domestic Patent References:
| JP7252615A | ||||
| JP58224142A | ||||
| JP1247544A | ||||
| JP52122209A |
Attorney, Agent or Firm:
Masanori Fujimaki
Previous Patent: PRESSURE BOOSTER FOR NITROGEN GAS
Next Patent: DATA COMMUNICATION EQUIPMENT, DATA COMMUNICATION SYSTEM AND DATA COMMUNICATION METHOD
Next Patent: DATA COMMUNICATION EQUIPMENT, DATA COMMUNICATION SYSTEM AND DATA COMMUNICATION METHOD