JPS579857A - Flat mask for manufacturing shadow mask for cathode-ray tube of color television and its manufacture - Google Patents
Flat mask for manufacturing shadow mask for cathode-ray tube of color television and its manufactureInfo
- Publication number
- JPS579857A JPS579857A JP8278480A JP8278480A JPS579857A JP S579857 A JPS579857 A JP S579857A JP 8278480 A JP8278480 A JP 8278480A JP 8278480 A JP8278480 A JP 8278480A JP S579857 A JPS579857 A JP S579857A
- Authority
- JP
- Japan
- Prior art keywords
- mask
- color television
- shadow mask
- flat
- cathode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Heat Treatment Of Sheet Steel (AREA)
- Electrodes For Cathode-Ray Tubes (AREA)
Abstract
PURPOSE: To press-form a flat mask along the curved shape of the cathoderay tube of a color television without carrying out leveling by using a low-carbon steel having a specified composition contg. Ti as the material of a shadow mask for the cathoderay tube.
CONSTITUTION: A shadow mask used in the cathoderay tube of a color television is manufactured with a low-carbon steel having a composition contg. 0.001W0.020% C, 0.05W0.40% Mn, 0.10W0.30% Cr, <0.015% N and 4×(C%+N%)W0.40% available Ti (total Ti minus Ti of Ti oxide). A flat mask made of extrathin strip of this steel is pierced and subjected to recrystallization annealing at ≥650°C, or the mask is pierced after the annealing. It is not required to level the flat mask before press forming along the curved surface of the cathoderay tube, so the process of manufacturing the shadow mask can be simplified.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8278480A JPS579857A (en) | 1980-06-20 | 1980-06-20 | Flat mask for manufacturing shadow mask for cathode-ray tube of color television and its manufacture |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8278480A JPS579857A (en) | 1980-06-20 | 1980-06-20 | Flat mask for manufacturing shadow mask for cathode-ray tube of color television and its manufacture |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS579857A true JPS579857A (en) | 1982-01-19 |
Family
ID=13784034
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8278480A Pending JPS579857A (en) | 1980-06-20 | 1980-06-20 | Flat mask for manufacturing shadow mask for cathode-ray tube of color television and its manufacture |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS579857A (en) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5064128A (en) * | 1973-10-11 | 1975-05-31 | ||
JPS5562123A (en) * | 1978-10-31 | 1980-05-10 | Nippon Kokan Kk <Nkk> | Preparation of shadow mask |
JPS5573825A (en) * | 1978-11-24 | 1980-06-03 | Nisshin Steel Co Ltd | Production of hot-dipped steel plate for ultra-deep drawing |
JPS5623264A (en) * | 1979-08-02 | 1981-03-05 | Kobe Steel Ltd | Production of galvanized steel sheet |
-
1980
- 1980-06-20 JP JP8278480A patent/JPS579857A/en active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5064128A (en) * | 1973-10-11 | 1975-05-31 | ||
JPS5562123A (en) * | 1978-10-31 | 1980-05-10 | Nippon Kokan Kk <Nkk> | Preparation of shadow mask |
JPS5573825A (en) * | 1978-11-24 | 1980-06-03 | Nisshin Steel Co Ltd | Production of hot-dipped steel plate for ultra-deep drawing |
JPS5623264A (en) * | 1979-08-02 | 1981-03-05 | Kobe Steel Ltd | Production of galvanized steel sheet |
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