JPS5747529A - Forming method of pipe of thin plate - Google Patents
Forming method of pipe of thin plateInfo
- Publication number
- JPS5747529A JPS5747529A JP12257180A JP12257180A JPS5747529A JP S5747529 A JPS5747529 A JP S5747529A JP 12257180 A JP12257180 A JP 12257180A JP 12257180 A JP12257180 A JP 12257180A JP S5747529 A JPS5747529 A JP S5747529A
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- rolls
- lower rolls
- welded
- folded
- 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
Landscapes
- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
PURPOSE: To prevent a thin walled welded pipe from subjecting to corrugated deformation at the butted part, and to improve its quality, by providing with a bending process of the both side ends of a band plate in a cold rolling process of a pipe.
CONSTITUTION: Each side 12W13 of a thin band plate 11 is bent between upper and lower rolls 22, 23 of a driven type. The next break down process in the range 13W14 to form the commencement of a pipe shape is performed by the upper and lower rolls 23W26 and side rolls 24'W26'. Then the upper and lower rolls 23 play the role in both the bending and breaking down process. Next, while correcting the shape and butting the ends in the fine pass process 14W15, it is formed in a pipe shape by the upper and lower rolls 27W29 and idler side rolls 27'W29'. Then after the point 15, a welded part 6 of a butting seam 7, 8 having been folded inwards and a butted seam 9, 10 having been folded outwards are welded, and it is corrected of its strain. On this occasion, these folded parts 7, 8, 9, 10 may be cut away.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12257180A JPS5747529A (en) | 1980-09-04 | 1980-09-04 | Forming method of pipe of thin plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12257180A JPS5747529A (en) | 1980-09-04 | 1980-09-04 | Forming method of pipe of thin plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5747529A true JPS5747529A (en) | 1982-03-18 |
Family
ID=14839191
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12257180A Pending JPS5747529A (en) | 1980-09-04 | 1980-09-04 | Forming method of pipe of thin plate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5747529A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8959973B2 (en) * | 2005-11-30 | 2015-02-24 | Thyssenkrupp Steel Ag | Method and device for the coreless forming of hollow profiles |
-
1980
- 1980-09-04 JP JP12257180A patent/JPS5747529A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8959973B2 (en) * | 2005-11-30 | 2015-02-24 | Thyssenkrupp Steel Ag | Method and device for the coreless forming of hollow profiles |
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