JPS5527401A - Preventing method and apparatus for thickness deviation of forge welded pipe - Google Patents
Preventing method and apparatus for thickness deviation of forge welded pipeInfo
- Publication number
- JPS5527401A JPS5527401A JP8654478A JP8654478A JPS5527401A JP S5527401 A JPS5527401 A JP S5527401A JP 8654478 A JP8654478 A JP 8654478A JP 8654478 A JP8654478 A JP 8654478A JP S5527401 A JPS5527401 A JP S5527401A
- Authority
- JP
- Japan
- Prior art keywords
- forge
- pipe
- weld zone
- welded
- welding
- 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.)
- Granted
Links
Abstract
PURPOSE: To readily prevent the production of thickness deviation of welded pipes based on drawing by locally force-cooling the neighborhood of the forge-weld zone since forge-welding roll process to drawing process in a welded pipe manufacture process.
CONSTITUTION: The both edges in the width direction of a hoop a being blank are heated to a temperature higher than that of other portions and the both edges are butted downward to pipe-form by a forming roll 1. This is then forge-welded with forge-welding rolls 2 to form a forge welded pipe b. At this time, cooling water is sprayed toward the outside forge-welding line from the spray nozzles 8 at the top of the water feed pipings 7, 7' provided across from immediate behind the forge-welding rolls 2 up to a drawing roll 3 and across from drawing rolls 4, 6. The neighborhood of the forge-weld zone with the forge-weld line of the welded pipe b as a center is forcefully cooled and since the outside diameter of the pipe is drawn by drawing rolls 3 thru 6 where the temperature differences of the portions of the neighborhood of the forge-weld zone and other portions of the base metal have no longer temperature differences, the thickness increase near the forge-weld zone is reduced and the production of thickness deviation prevented.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8654478A JPS5527401A (en) | 1978-07-15 | 1978-07-15 | Preventing method and apparatus for thickness deviation of forge welded pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8654478A JPS5527401A (en) | 1978-07-15 | 1978-07-15 | Preventing method and apparatus for thickness deviation of forge welded pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5527401A true JPS5527401A (en) | 1980-02-27 |
| JPS5714244B2 JPS5714244B2 (en) | 1982-03-23 |
Family
ID=13889941
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8654478A Granted JPS5527401A (en) | 1978-07-15 | 1978-07-15 | Preventing method and apparatus for thickness deviation of forge welded pipe |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5527401A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57138705A (en) * | 1981-01-16 | 1982-08-27 | Pirelli Cavi Spa | Power cable immersed with insulating fluid |
| JP2022126989A (en) * | 2021-02-19 | 2022-08-31 | Ｊｆｅスチール株式会社 | Butt-welded steel tube and manufacturing method thereof |
-
1978
- 1978-07-15 JP JP8654478A patent/JPS5527401A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57138705A (en) * | 1981-01-16 | 1982-08-27 | Pirelli Cavi Spa | Power cable immersed with insulating fluid |
| JP2022126989A (en) * | 2021-02-19 | 2022-08-31 | Ｊｆｅスチール株式会社 | Butt-welded steel tube and manufacturing method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5714244B2 (en) | 1982-03-23 |
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