JPS569034A - Production of heat pipe with hollow steel - Google Patents

Production of heat pipe with hollow steel

Info

Publication number
JPS569034A
JPS569034A JP8398279A JP8398279A JPS569034A JP S569034 A JPS569034 A JP S569034A JP 8398279 A JP8398279 A JP 8398279A JP 8398279 A JP8398279 A JP 8398279A JP S569034 A JPS569034 A JP S569034A
Authority
JP
Japan
Prior art keywords
pipe
hollow steel
projections
heat pipe
circumference
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
JP8398279A
Other languages
Japanese (ja)
Inventor
Hiroki Ishida
Noboru Onozuka
Takuji Nishitani
Tomoya Tomita
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 Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP8398279A priority Critical patent/JPS569034A/en
Publication of JPS569034A publication Critical patent/JPS569034A/en
Pending legal-status Critical Current

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Abstract

PURPOSE: To easily obtain a heat pipe of improved performance by using a mandrel having projections on its outside circumference as a closely adhering jig for expanding a pipe made of nonferrous metals inserted into hollow steel.
CONSTITUTION: A nonferrous metal pipe 2 of an outside diameter slightly smaller than the inside diameter of hollow steel 1 of high mechanical strength is inserted into said steel. After this, a mandrel 4 provided with a number of projections 3 on its outside circumference is press-fitted into the pipe 2 to expand the pipe 2 and closely adhere its outside circumference to the inside circumference of the hollow steel 1. At this same instant, multiple grooves 5 are formed in the inside wall of the pipe 2 by the projections 3. Thereafter, one end of the pipe 2 is closed and further a negative pressure is developed in the pipe 2 to put working fluid therein, then the other end is closed as well.
COPYRIGHT: (C)1981,JPO&Japio
JP8398279A 1979-07-04 1979-07-04 Production of heat pipe with hollow steel Pending JPS569034A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8398279A JPS569034A (en) 1979-07-04 1979-07-04 Production of heat pipe with hollow steel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8398279A JPS569034A (en) 1979-07-04 1979-07-04 Production of heat pipe with hollow steel

Publications (1)

Publication Number Publication Date
JPS569034A true JPS569034A (en) 1981-01-29

Family

ID=13817731

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8398279A Pending JPS569034A (en) 1979-07-04 1979-07-04 Production of heat pipe with hollow steel

Country Status (1)

Country Link
JP (1) JPS569034A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4847963A (en) * 1987-09-30 1989-07-18 The Torrington Company Camshaft manufacture
USRE33888E (en) * 1986-01-17 1992-04-21 The Torrington Company Method of making a camshaft for reciprocating piston engines

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE33888E (en) * 1986-01-17 1992-04-21 The Torrington Company Method of making a camshaft for reciprocating piston engines
US4847963A (en) * 1987-09-30 1989-07-18 The Torrington Company Camshaft manufacture

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