JPS5759669A - Method of forming insulating film on electromagnetic steel sheet - Google Patents
Method of forming insulating film on electromagnetic steel sheetInfo
- Publication number
- JPS5759669A JPS5759669A JP13351280A JP13351280A JPS5759669A JP S5759669 A JPS5759669 A JP S5759669A JP 13351280 A JP13351280 A JP 13351280A JP 13351280 A JP13351280 A JP 13351280A JP S5759669 A JPS5759669 A JP S5759669A
- Authority
- JP
- Japan
- Prior art keywords
- steel sheet
- electromagnetic steel
- insulating film
- onto
- temperature
- 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
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
PURPOSE: To easily form an insulating film on the surface of an electromagnetic steel sheet within a short period, by applying a powdery resin onto the surface of the steel sheet during the production of the electromagnetic steel sheet in an ultrarapid cooling method.
CONSTITUTION: A steel melt as a material for an electromagnetic steel sheet is dropped from a crucible 1 through a nozzle 2 onto a roll 3 rotating at a high speed and cooled super-rapidly, to continuously produce an electromagnetic steel sheet 5. The electromagnetic steel sheet 5 is passed through a space between temperature- control rolls 4a, 4b, so as to maintain the temperature of the steel sheet 5 at a level higher by about 10°C than the melting point of an insulating film-forming powdery resin 7 to be applied. Thereafter, the thermosetting or thermoplastic resin powder 7 injected from an electrostatic flow-dip device 6 located below the steel sheet 5 is sprayed onto the steel sheet 5 during its running toward a guide foll 9. The powder 7 is charged with high voltage electricity by an anode 6a to which a voltage of 40'60kV is charged from a high voltage power source 8. The steel sheet 5 is kept at an earth potential by the temperature-control roll 4a, so that the powder 7 closely adherse onto the steel sheet 5 and melted. Consequently, the insulating film layer can be formed within a short period.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13351280A JPS5759669A (en) | 1980-09-24 | 1980-09-24 | Method of forming insulating film on electromagnetic steel sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13351280A JPS5759669A (en) | 1980-09-24 | 1980-09-24 | Method of forming insulating film on electromagnetic steel sheet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5759669A true JPS5759669A (en) | 1982-04-10 |
Family
ID=15106506
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13351280A Pending JPS5759669A (en) | 1980-09-24 | 1980-09-24 | Method of forming insulating film on electromagnetic steel sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5759669A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61185030A (en) * | 1985-02-13 | 1986-08-18 | Hitachi Ltd | Steel strip for electric device |
| JPH01215377A (en) * | 1988-02-24 | 1989-08-29 | Sanueebu Kogyo Kk | Production of coated metallic sheet |
-
1980
- 1980-09-24 JP JP13351280A patent/JPS5759669A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61185030A (en) * | 1985-02-13 | 1986-08-18 | Hitachi Ltd | Steel strip for electric device |
| JPH01215377A (en) * | 1988-02-24 | 1989-08-29 | Sanueebu Kogyo Kk | Production of coated metallic sheet |
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