Title:
MATERIAL FOR APERTURE GRILL FOR COLOR PICTURE TUBE, PROCESS FOR MAKING THE SAME, APERTURE GRILL, AND PICTURE TUBE
Document Type and Number:
WIPO Patent Application WO/1999/047718
Kind Code:
A1
Abstract:
A material for an aperture grill for a color picture tube having excellent yield and high-temperature creep strengths and magnetic characteristics superior to those of the existing material; a process for making the material; an aperture grill; and a picture tube having the aperture grill assembled therein. A low-carbon steel sheet containing 0.05 to 2.5 wt.% of Cu, or 0.05 to 2.5 wt.% of Cu and 0.001 to 0.4 wt.% of P is cold rolled and then aged at 300 to 700 °C, or cold rolled, intermediately annealed at 500 to 800 °C, secondarily cold rolled, and then aged.
Inventors:
OKAYAMA HIRONAO (JP)
IDE TSUNEYUKI (JP)
TAHARA YASUO (JP)
FUJISHIGE HIROSHI (JP)
IKEDA AKIRA (JP)
TAKAKI SETSUO (JP)
IDE TSUNEYUKI (JP)
TAHARA YASUO (JP)
FUJISHIGE HIROSHI (JP)
IKEDA AKIRA (JP)
TAKAKI SETSUO (JP)
Application Number:
PCT/JP1998/001197
Publication Date:
September 23, 1999
Filing Date:
March 19, 1998
Export Citation:
Assignee:
TOYO KOHAN CO LTD (JP)
OKAYAMA HIRONAO (JP)
IDE TSUNEYUKI (JP)
TAHARA YASUO (JP)
FUJISHIGE HIROSHI (JP)
IKEDA AKIRA (JP)
TAKAKI SETSUO (JP)
OKAYAMA HIRONAO (JP)
IDE TSUNEYUKI (JP)
TAHARA YASUO (JP)
FUJISHIGE HIROSHI (JP)
IKEDA AKIRA (JP)
TAKAKI SETSUO (JP)
International Classes:
C21D8/02; C22C38/00; C22C38/16; H01J29/07; (IPC1-7): C22C38/00; C21D8/02; C21D9/46; C22C38/16; H01J9/14; H01J29/07; H01J31/20
Foreign References:
| JPS63255340A | 1988-10-21 | |||
| JPH0867945A | 1996-03-12 |
Attorney, Agent or Firm:
Ohta, Akio (4-3, Kasumigaseki 1-chom, Chiyoda-ku Tokyo, JP)
Download PDF: