Title:
MASK MATERIAL FOR COLOR PICTURE TUBE, ITS PRODUCTION METHOD, MASK FOR COLOR PICTURE TUBE, AND COLOR PICTURE TUBE
Document Type and Number:
WIPO Patent Application WO/2003/069006
Kind Code:
A1
Abstract:
A mask material for a color picture tube excellent in tensile strength, creep extension, and magnetic characteristics. A low carbon steel to which Ni, Al, and Ti, or Ni, Al, Ti, and B are added is subjected to hot rolling, pickling, primary cold rolling, intermediate annealing, secondary cold rolling, and age precipitation so as to precipitate fine grains of intermetallic compounds such as NiAl(Ti) and Ni3Al(Ti) by aging in the steel. A method for producing the material, a mask for a color picture tube, and a color picture tube incorporating the mask.
Inventors:
IWANAGA KENGO (JP)
IKEDA YASUYUKI (JP)
TAHARA YASUO (JP)
MARUHASHI YOSHIKAZU (JP)
OKAYAMA HIRONAO (JP)
IKEDA YASUYUKI (JP)
TAHARA YASUO (JP)
MARUHASHI YOSHIKAZU (JP)
OKAYAMA HIRONAO (JP)
Application Number:
PCT/JP2003/001374
Publication Date:
August 21, 2003
Filing Date:
February 10, 2003
Export Citation:
Assignee:
TOYO KOHAN CO LTD (JP)
IWANAGA KENGO (JP)
IKEDA YASUYUKI (JP)
TAHARA YASUO (JP)
MARUHASHI YOSHIKAZU (JP)
OKAYAMA HIRONAO (JP)
IWANAGA KENGO (JP)
IKEDA YASUYUKI (JP)
TAHARA YASUO (JP)
MARUHASHI YOSHIKAZU (JP)
OKAYAMA HIRONAO (JP)
International Classes:
C21D9/46; C22C38/00; C22C38/02; C22C38/04; C22C38/06; C22C38/08; C22C38/14; H01J9/14; H01J29/07; C21D8/02; (IPC1-7): C22C38/00; C21D9/46; C22C38/14; H01J9/14; H01J29/07
Foreign References:
| JPH01289053A | 1989-11-21 | |||
| JPH0827541A | 1996-01-30 | |||
| EP0129943A1 | 1985-01-02 | |||
| US3909311A | 1975-09-30 | |||
| JPH05311332A | 1993-11-22 | |||
| JPH0673503A | 1994-03-15 |
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