JPS5442352A - Method of producing butt-welded steel pipe - Google Patents
Method of producing butt-welded steel pipeInfo
- Publication number
- JPS5442352A JPS5442352A JP10851077A JP10851077A JPS5442352A JP S5442352 A JPS5442352 A JP S5442352A JP 10851077 A JP10851077 A JP 10851077A JP 10851077 A JP10851077 A JP 10851077A JP S5442352 A JPS5442352 A JP S5442352A
- Authority
- JP
- Japan
- Prior art keywords
- edge section
- skelp
- temperature
- oxygen
- measured
- 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 ensure the rise in the temperature of an edge section up to a required point by controlling the distance between an oxygen nozzle and the edge section according to the temperature of the skelp edge section measured immediately before being blown by oxygen in wolding steel pipes.
CONSTITUTION: A section requiring no welding on a band-shaped skelp 2 is heated up to to 900W1,200°C in a heating furnace 1 to form an edge section 2' into a tubula r shape. The edge section 2' thus tubularly formed is heated up to 1,050W1,250°C immediately before reaching an exygen blowing position. Then, this band-shaped skelp 2 is formed into a tube. The temperature of the skelp 4 thus formed is measured with a thermometer 6. The distance between the end of an oxygen nozzle 7 and an edge section 4' on the skelp 4 is controlled by a moving device such as jack according to the temperature thus measured. Oxygen is blown against the edge section 4' from the nozzle 7 to raise the temperature above 1,390°C. Then, the edge section 4' is welded by a welding roll 8. In this manner, the production of scale and the required amount of fuel are reduced, while the quality of the surface of the products is imporved.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10851077A JPS5442352A (en) | 1977-09-09 | 1977-09-09 | Method of producing butt-welded steel pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10851077A JPS5442352A (en) | 1977-09-09 | 1977-09-09 | Method of producing butt-welded steel pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5442352A true JPS5442352A (en) | 1979-04-04 |
Family
ID=14486601
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10851077A Pending JPS5442352A (en) | 1977-09-09 | 1977-09-09 | Method of producing butt-welded steel pipe |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5442352A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4577451B1 (en) * | 2009-12-03 | 2010-11-10 | Ｊｆｅスチール株式会社 | Forged steel pipe with good surface after flaring |
| JP2021181096A (en) * | 2020-05-18 | 2021-11-25 | Ｊｆｅスチール株式会社 | Butt-welded steel tube with excellent flare processability and method for manufacture thereof |
-
1977
- 1977-09-09 JP JP10851077A patent/JPS5442352A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4577451B1 (en) * | 2009-12-03 | 2010-11-10 | Ｊｆｅスチール株式会社 | Forged steel pipe with good surface after flaring |
| JP2011115820A (en) * | 2009-12-03 | 2011-06-16 | Jfe Steel Corp | Butt-welded steel pipe with good surface after flaring processing |
| JP2021181096A (en) * | 2020-05-18 | 2021-11-25 | Ｊｆｅスチール株式会社 | Butt-welded steel tube with excellent flare processability and method for manufacture thereof |
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