JPS54125555A - Production method for sheath heater - Google Patents
Production method for sheath heaterInfo
- Publication number
- JPS54125555A JPS54125555A JP3324978A JP3324978A JPS54125555A JP S54125555 A JPS54125555 A JP S54125555A JP 3324978 A JP3324978 A JP 3324978A JP 3324978 A JP3324978 A JP 3324978A JP S54125555 A JPS54125555 A JP S54125555A
- Authority
- JP
- Japan
- Prior art keywords
- electric wire
- production method
- sheath heater
- oxide film
- metal pipe
- 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
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
- Resistance Heating (AREA)
Abstract
PURPOSE: To maintain the insulation resistance between electric wire and metal pipe by forming the oxide film in electric wire at its annealing process.
CONSTITUTION: For insulation material charged between metal pipe and electric wire, a material like manganese dioxide and the like which produces oxigen at high temperature, is used and then oxide film to the electric wire is provided at its annealing process. By doing so, curve A, comparing with usual curve B, does not produce the degradation of insulation resistance.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3324978A JPS54125555A (en) | 1978-03-22 | 1978-03-22 | Production method for sheath heater |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3324978A JPS54125555A (en) | 1978-03-22 | 1978-03-22 | Production method for sheath heater |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54125555A true JPS54125555A (en) | 1979-09-29 |
Family
ID=12381206
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3324978A Pending JPS54125555A (en) | 1978-03-22 | 1978-03-22 | Production method for sheath heater |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54125555A (en) |
-
1978
- 1978-03-22 JP JP3324978A patent/JPS54125555A/en active Pending
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