JPS64282A - Shadow mask and production thereof - Google Patents
Shadow mask and production thereofInfo
- Publication number
- JPS64282A JPS64282A JP26266487A JP26266487A JPS64282A JP S64282 A JPS64282 A JP S64282A JP 26266487 A JP26266487 A JP 26266487A JP 26266487 A JP26266487 A JP 26266487A JP S64282 A JPS64282 A JP S64282A
- Authority
- JP
- Japan
- Prior art keywords
- shadow mask
- treatment
- cathode
- etching
- cold
- 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
- ing And Chemical Polishing (AREA)
Abstract
PURPOSE: To obtain a shadow mask which has sufficient strength and is low in coercive force by cold-rolling steel contg. specified amounts of C, Si, Mn and S, and thereafter incorporating it into a cathode-ray tube in a state imparted with tension via boring by etching, heat-treatment and blackening process.
CONSTITUTION: Steel consisting of by weight ≤0.03% C, 1W5% Si, ≤1% Mn, ≤0.02% S and the balance Fe and inevitable impurities is cold-rolled to plate thickness not more than 50μm. Then it is incorporated into a cathode-ray tube in a state imparted with tension via the processes of boring by etching, heat- treatment at about 300W700°C and blackening treatment of a film. Thereby color shade is not caused and a shadow mask satisfying such both-sides that strength is sufficient and coercive force is low can be produced.
COPYRIGHT: (C)1989,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP26266487A JPS64282A (en) | 1987-03-30 | 1987-10-20 | Shadow mask and production thereof |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7419387 | 1987-03-30 | ||
JP62-74193 | 1987-03-30 | ||
JP26266487A JPS64282A (en) | 1987-03-30 | 1987-10-20 | Shadow mask and production thereof |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH01282A JPH01282A (en) | 1989-01-05 |
JPS64282A true JPS64282A (en) | 1989-01-05 |
Family
ID=26415324
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP26266487A Pending JPS64282A (en) | 1987-03-30 | 1987-10-20 | Shadow mask and production thereof |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS64282A (en) |
-
1987
- 1987-10-20 JP JP26266487A patent/JPS64282A/en active Pending
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