JPS5455838A - Manufacturing method of sheathed heater - Google Patents

Manufacturing method of sheathed heater

Info

Publication number
JPS5455838A
JPS5455838A JP12213077A JP12213077A JPS5455838A JP S5455838 A JPS5455838 A JP S5455838A JP 12213077 A JP12213077 A JP 12213077A JP 12213077 A JP12213077 A JP 12213077A JP S5455838 A JPS5455838 A JP S5455838A
Authority
JP
Japan
Prior art keywords
sheathed heater
manufacturing
pipe
metal pipe
quality
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
JP12213077A
Other languages
Japanese (ja)
Inventor
Katsuhiro Yamazaki
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.)
Hitachi Heating Appliances Co Ltd
Hitachi Netsu Kigu KK
Original Assignee
Hitachi Heating Appliances Co Ltd
Hitachi Netsu Kigu KK
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 Hitachi Heating Appliances Co Ltd, Hitachi Netsu Kigu KK filed Critical Hitachi Heating Appliances Co Ltd
Priority to JP12213077A priority Critical patent/JPS5455838A/en
Publication of JPS5455838A publication Critical patent/JPS5455838A/en
Pending legal-status Critical Current

Links

Landscapes

  • Resistance Heating (AREA)

Abstract

PURPOSE: To improve the quality of a sheathed heater, by throttling only the portion of bending work of a metal pipe.
CONSTITUTION: A heating wire 2 welding with terminal 1 is inserted in the center of a metal pipe 3 and the clearance between the pipe 3 and the wire 2 is filled with insulating filler 4. Then, only the point A where the sheathed heater is bent is throttled. This makes the density of filler at the point A increased and the heating wire 2 fixed at the center of the metal pipe 1, eliminating the eccentricity otherwise to be caused at the time of bending. The partial throttling of the pipe makes the work very easy. As a whole this manufacturing method can improve the electric insulation and quality of the sheathed heater
COPYRIGHT: (C)1979,JPO&Japio
JP12213077A 1977-10-12 1977-10-12 Manufacturing method of sheathed heater Pending JPS5455838A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12213077A JPS5455838A (en) 1977-10-12 1977-10-12 Manufacturing method of sheathed heater

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12213077A JPS5455838A (en) 1977-10-12 1977-10-12 Manufacturing method of sheathed heater

Publications (1)

Publication Number Publication Date
JPS5455838A true JPS5455838A (en) 1979-05-04

Family

ID=14828350

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12213077A Pending JPS5455838A (en) 1977-10-12 1977-10-12 Manufacturing method of sheathed heater

Country Status (1)

Country Link
JP (1) JPS5455838A (en)

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