JPS5479151A - Jointing method for steel strip in manufacture of forge welded pipe - Google Patents
Jointing method for steel strip in manufacture of forge welded pipeInfo
- Publication number
- JPS5479151A JPS5479151A JP14789877A JP14789877A JPS5479151A JP S5479151 A JPS5479151 A JP S5479151A JP 14789877 A JP14789877 A JP 14789877A JP 14789877 A JP14789877 A JP 14789877A JP S5479151 A JPS5479151 A JP S5479151A
- Authority
- JP
- Japan
- Prior art keywords
- strips
- manufacture
- strip
- pipe
- steel strip
- 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 relieve the deformation resistance of the steel strip in the rolls of the pipe former so as to prevent the tearing of strip on purpose to continuously manufacture the forge welded pipe.
CONSTITUTION: When a difference above 1 mm exists between the sheet gauges of preceding steel strip A and succeeding steel strip B in manufacture of the forge welded pipe, one or more kinds of steel strips C with intermediate sheet gauge are interposed between two strips A and B on purpose to stepwise make under 1 mm the gauge difference; and then, these strips are successively jointed according to the flash butt welding. The length of these intermediate strips C is preferably settled equally to the distance from the forming roll to the middle point of pipe forming rolls. According to this method, the deformation resistance of strips in the pipe forming rolls is relieved; and the control on the heating temperature for the thin gauge strip A and thick gauge strip B can be optimized by utilizing the time of passage of the intermediate strips C, so that the activity rate of manufacture of the forge welded pipe is improved.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14789877A JPS5479151A (en) | 1977-12-08 | 1977-12-08 | Jointing method for steel strip in manufacture of forge welded pipe |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14789877A JPS5479151A (en) | 1977-12-08 | 1977-12-08 | Jointing method for steel strip in manufacture of forge welded pipe |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5479151A true JPS5479151A (en) | 1979-06-23 |
JPS5731507B2 JPS5731507B2 (en) | 1982-07-05 |
Family
ID=15440634
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14789877A Granted JPS5479151A (en) | 1977-12-08 | 1977-12-08 | Jointing method for steel strip in manufacture of forge welded pipe |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5479151A (en) |
-
1977
- 1977-12-08 JP JP14789877A patent/JPS5479151A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS5731507B2 (en) | 1982-07-05 |
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