JPS566742A - Swaging method - Google Patents

Swaging method

Info

Publication number
JPS566742A
JPS566742A JP8024879A JP8024879A JPS566742A JP S566742 A JPS566742 A JP S566742A JP 8024879 A JP8024879 A JP 8024879A JP 8024879 A JP8024879 A JP 8024879A JP S566742 A JPS566742 A JP S566742A
Authority
JP
Japan
Prior art keywords
pipe
thickness
ratio
swaging
gas
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
JP8024879A
Other languages
Japanese (ja)
Inventor
Kiyoshi Hajikano
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP8024879A priority Critical patent/JPS566742A/en
Publication of JPS566742A publication Critical patent/JPS566742A/en
Pending legal-status Critical Current

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  • Forging (AREA)

Abstract

PURPOSE: To enable the precision working of a pipe which has hitherto been difficult to work, with good roughness of the inside surface, by swaging the pipe of ≤0.08 in the ratio between the thickness and outside diameter of the pipe by filling gas or oil in its inside hole.
CONSTITUTION: In the method of swaging a pipe of ≤0.08 in the ratio t/D between the thickness (t) and outside diameter Dϕ of the pipe which has hitherto been difficult to swage, both ends 2, 2' of the pipe 1 are crushed to 2a, 2a' and dry gas or gas or air or the fluid 4 such as water or oil is filled in its inside hole 3, whereby said pipe is swaged. As a result, the roughness of the inside surface is made good by the fluid; moreover, working to a uniform thickness may be done and the reduction ratio may be made higher.
COPYRIGHT: (C)1981,JPO&Japio
JP8024879A 1979-06-27 1979-06-27 Swaging method Pending JPS566742A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8024879A JPS566742A (en) 1979-06-27 1979-06-27 Swaging method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8024879A JPS566742A (en) 1979-06-27 1979-06-27 Swaging method

Publications (1)

Publication Number Publication Date
JPS566742A true JPS566742A (en) 1981-01-23

Family

ID=13713013

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8024879A Pending JPS566742A (en) 1979-06-27 1979-06-27 Swaging method

Country Status (1)

Country Link
JP (1) JPS566742A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60121028A (en) * 1983-12-02 1985-06-28 Ngk Spark Plug Co Ltd Method of swaging of heat generating tube of sheath glow plug

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60121028A (en) * 1983-12-02 1985-06-28 Ngk Spark Plug Co Ltd Method of swaging of heat generating tube of sheath glow plug
JPH0347940B2 (en) * 1983-12-02 1991-07-22 Ngk Spark Plug Co

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