JPS6444210A - Method and device for manufacturing thick metal pipe - Google Patents
Method and device for manufacturing thick metal pipeInfo
- Publication number
- JPS6444210A JPS6444210A JP20163787A JP20163787A JPS6444210A JP S6444210 A JPS6444210 A JP S6444210A JP 20163787 A JP20163787 A JP 20163787A JP 20163787 A JP20163787 A JP 20163787A JP S6444210 A JPS6444210 A JP S6444210A
- Authority
- JP
- Japan
- Prior art keywords
- die
- pipe
- metal pipe
- outer diameter
- coil
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/06—Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
- B21J5/08—Upsetting
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Extraction Processes (AREA)
Abstract
PURPOSE:To prevent the generation of a buckling part and to stably obtain a thick pipe excellent in the dimensional accuracy by executing the heating, thickening and cooling of a metal pipe inside a heat resistant insulating property ceramic made die slightly larger than the pipe outer diameter. CONSTITUTION:A metal pipe 1 is passed through the die 10 made of ceramics of heat resistant insulating property slightly larger than the outer diameter of the metal pipe 1, interposed between a fixed end 4 and moving end 5 and pressurized by a fixed pressure in the pipe axial direction. The die 10 and coil 3 are integrated and the die 10 is set by moving to the working part of the metal pipe 1. A high frequency current is passed and when the local part inside the die 10 of the metal pipe 1 is subjected to induction heating, the metal pipe 1 is heated and deformed locally and the outer diameter and thickness are increased until abutting to the die 10 inside. The die 10 and coil 3 are moved in the pipe axial direction at the speed of obtaining the specified temp. The thick pipe having excellent dimensional accuracy is thus obtd. stably.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20163787A JPS6444210A (en) | 1987-08-12 | 1987-08-12 | Method and device for manufacturing thick metal pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20163787A JPS6444210A (en) | 1987-08-12 | 1987-08-12 | Method and device for manufacturing thick metal pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6444210A true JPS6444210A (en) | 1989-02-16 |
Family
ID=16444380
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20163787A Pending JPS6444210A (en) | 1987-08-12 | 1987-08-12 | Method and device for manufacturing thick metal pipe |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6444210A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6321581B1 (en) * | 1996-04-13 | 2001-11-27 | Audi Ag | Process for increasing the wall thickness in hollow sections |
-
1987
- 1987-08-12 JP JP20163787A patent/JPS6444210A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6321581B1 (en) * | 1996-04-13 | 2001-11-27 | Audi Ag | Process for increasing the wall thickness in hollow sections |
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