JPS569034A - Production of heat pipe with hollow steel - Google Patents
Production of heat pipe with hollow steelInfo
- 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
Links
Landscapes
- Metal Extraction Processes (AREA)
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
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)
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 |
-
1979
- 1979-07-04 JP JP8398279A patent/JPS569034A/en active Pending
Cited By (2)
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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