JPS54153502A - Shield plate for cassette tape - Google Patents
Shield plate for cassette tapeInfo
- Publication number
- JPS54153502A JPS54153502A JP6250778A JP6250778A JPS54153502A JP S54153502 A JPS54153502 A JP S54153502A JP 6250778 A JP6250778 A JP 6250778A JP 6250778 A JP6250778 A JP 6250778A JP S54153502 A JPS54153502 A JP S54153502A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- annealing
- molding process
- shield plate
- nickel
- 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.)
- Granted
Links
Landscapes
- Heat Treatment Of Nonferrous Metals Or Alloys (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
PURPOSE: To reduce the manufactureing cost without performing annealing process, by only molding process for nickel-iron system magnetic alloy including 70 to 90% nickel after magnetic annealing.
CONSTITUTION: The plate material consisting of nickel 70 to 90%-iron system magnetic alloy is performed for magnetic annealing including annealing for straightening at more than 800°C, and the shield plate is formed with molding process after that. Since this magnetic alloy is excellent in the magnetic characteristics, the magnetic performance is not almost deteriorated with molding process, and the degree of molding process for the shield plate is less and no magnetic performance injured, the magnetic annealing can be made in common use for the annealing for straightening before molding process.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6250778A JPS54153502A (en) | 1978-05-25 | 1978-05-25 | Shield plate for cassette tape |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6250778A JPS54153502A (en) | 1978-05-25 | 1978-05-25 | Shield plate for cassette tape |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS54153502A true JPS54153502A (en) | 1979-12-03 |
JPS612744B2 JPS612744B2 (en) | 1986-01-27 |
Family
ID=13202148
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6250778A Granted JPS54153502A (en) | 1978-05-25 | 1978-05-25 | Shield plate for cassette tape |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54153502A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6161497A (en) * | 1984-08-31 | 1986-03-29 | 住友軽金属工業株式会社 | Electromagnetic wave shielding material |
-
1978
- 1978-05-25 JP JP6250778A patent/JPS54153502A/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6161497A (en) * | 1984-08-31 | 1986-03-29 | 住友軽金属工業株式会社 | Electromagnetic wave shielding material |
Also Published As
Publication number | Publication date |
---|---|
JPS612744B2 (en) | 1986-01-27 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS5225296A (en) | Forming method of highly heatproof insulating film on grain oriented s ilicon steel plate | |
IT1090351B (en) | APPARATUS FOR THE MAGNETIC DETERMINATION OF THE CONTENT OF GD + 3 IN NUCLEAR FUEL ELEMENTS FORMED BY (U, GD) 02 | |
JPS536560A (en) | Manufacture of cathode for direct heating type cathode ray tube | |
JPS54153502A (en) | Shield plate for cassette tape | |
JPS5241461A (en) | Brush material | |
JPS51151208A (en) | A vibrationproof sintered alloy | |
JPS5223910A (en) | Magnetic tape unit | |
JPS5264615A (en) | Magnetic shield for fastner of transformer | |
JPS51116355A (en) | Gasket having graphite | |
JPS5223581A (en) | Antifreeze composition and production process for same | |
JPS5346262A (en) | Manufacture for magnetron | |
JPS5436528A (en) | Manufacturing method of resin mold current transformer | |
JPS5327357A (en) | Direct heating cathode | |
JPS522754A (en) | Method for selecting quality of material and shape of metallic object by utilization of effect of magnetic shield | |
JPS5218124A (en) | Polarizer | |
JPS5267268A (en) | Formation of oxidization film | |
JPS5310896A (en) | Cdse humidity sensitive material and its manufacturing process | |
JPS5259694A (en) | Preparation of methyl methacrylate polymer | |
JPS5442987A (en) | Manufacture of semiconductor device | |
JPS51143894A (en) | Method of controlling the composition of nickel-zinferrite films | |
JPS5269897A (en) | Fabrication of magnetic thin films of iron oxides | |
JPS5364782A (en) | Insulation spacer and its manufacturing method | |
JPS51141583A (en) | Method for producing an electrode for use semiconductor units | |
JPS5375421A (en) | Magnetic shield for stationary induction electrical apparatus | |
JPS5252819A (en) | Manufacturing method of fe-cr alloy |