JPS54125555A - Production method for sheath heater - Google Patents

Production method for sheath heater

Info

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
Application number
JP3324978A
Other languages
Japanese (ja)
Inventor
Hisaaki Okada
Masakazu Tanahashi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP3324978A priority Critical patent/JPS54125555A/en
Publication of JPS54125555A publication Critical patent/JPS54125555A/en
Pending legal-status Critical Current

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
JP3324978A 1978-03-22 1978-03-22 Production method for sheath heater Pending JPS54125555A (en)

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)

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