JPS56134022A - Pipe bending method - Google Patents
Pipe bending methodInfo
- Publication number
- JPS56134022A JPS56134022A JP3612080A JP3612080A JPS56134022A JP S56134022 A JPS56134022 A JP S56134022A JP 3612080 A JP3612080 A JP 3612080A JP 3612080 A JP3612080 A JP 3612080A JP S56134022 A JPS56134022 A JP S56134022A
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- bending
- head
- heat treatment
- induction heating
- 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
Abstract
PURPOSE: To eliminate an usual heat treatment by cooling a bent part from the inside after bending a heated pipe.
CONSTITUTION: A rotary arm 5 is turned to a position adjacent to an induction heating coil A and fixes a pipe 17 by a fixing head 6. The pipe 17 is heated locally via an induction heating device 4 and pressed to drive it via a driving head 3 in an arrow direction A in such state that the arm 5 moves to a position where pipe- bending work of 90° is completed. In this case, bending process is performed by a guidance of the head 6 while the pipe 17 is softened by heating. Ant at the time when the pipe 17 is bent at distances S1, S2 away from the ends of the coil 4A and at high temperature, a bending process is performed while quenching the pipe 17 from the inside by a cooling medium 9. As a result, compressive stress is generated in the inside of the pipe and tensile stress in the outside, so that heat treatment to relief residual stress in fabrication is omitted.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3612080A JPS56134022A (en) | 1980-03-24 | 1980-03-24 | Pipe bending method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3612080A JPS56134022A (en) | 1980-03-24 | 1980-03-24 | Pipe bending method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS56134022A true JPS56134022A (en) | 1981-10-20 |
Family
ID=12460909
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3612080A Pending JPS56134022A (en) | 1980-03-24 | 1980-03-24 | Pipe bending method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56134022A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005320626A (en) * | 2004-04-06 | 2005-11-17 | Hitachi Ltd | Heat treatment method and apparatus therefor |
| EP1755801A1 (en) † | 2004-05-13 | 2007-02-28 | Accra Teknik AB | A device and a method for shaping and quenching a beam |
| CN102896186A (en) * | 2011-07-26 | 2013-01-30 | 张家港华裕有色金属材料有限公司 | Method and device for finishing and shaping titanium-titanium alloy U-shaped elbow pipe |
| CN103447362A (en) * | 2013-08-26 | 2013-12-18 | 河南省驰源石油化工机械有限公司 | Method for producing arc-shaped steel pipes |
| US20170197237A1 (en) * | 2014-05-27 | 2017-07-13 | Nippon Steel & Sumitomo Metal Corporation | Manufacturing method for bent member and hot-bending apparatus for steel material |
-
1980
- 1980-03-24 JP JP3612080A patent/JPS56134022A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005320626A (en) * | 2004-04-06 | 2005-11-17 | Hitachi Ltd | Heat treatment method and apparatus therefor |
| EP1755801A1 (en) † | 2004-05-13 | 2007-02-28 | Accra Teknik AB | A device and a method for shaping and quenching a beam |
| EP1755801B2 (en) † | 2004-05-13 | 2014-08-20 | Accra Teknik AB | A device and a method for shaping and quenching a beam |
| CN102896186A (en) * | 2011-07-26 | 2013-01-30 | 张家港华裕有色金属材料有限公司 | Method and device for finishing and shaping titanium-titanium alloy U-shaped elbow pipe |
| CN102896186B (en) * | 2011-07-26 | 2016-05-25 | 张家港华裕有色金属材料有限公司 | Method and the device thereof of the U-shaped bend pipe finishing sizing of titanium or titanium alloy |
| CN103447362A (en) * | 2013-08-26 | 2013-12-18 | 河南省驰源石油化工机械有限公司 | Method for producing arc-shaped steel pipes |
| US20170197237A1 (en) * | 2014-05-27 | 2017-07-13 | Nippon Steel & Sumitomo Metal Corporation | Manufacturing method for bent member and hot-bending apparatus for steel material |
| US10543519B2 (en) * | 2014-05-27 | 2020-01-28 | Nippon Steel Corporation | Manufacturing method for bent member and hot-bending apparatus for steel material |
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