JPS566730A - Forming method of metal pipe - Google Patents
Forming method of metal pipeInfo
- Publication number
- JPS566730A JPS566730A JP8075879A JP8075879A JPS566730A JP S566730 A JPS566730 A JP S566730A JP 8075879 A JP8075879 A JP 8075879A JP 8075879 A JP8075879 A JP 8075879A JP S566730 A JPS566730 A JP S566730A
- Authority
- JP
- Japan
- Prior art keywords
- skelp
- edge
- subjected
- forming
- rolls
- 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 prevent the edges of a skelp from being flawed and form the same into a pipe shape which is free from any matching defect of weld butt lines by making the molding amount and width of edge bending larger.
CONSTITUTION: A flat skelp 1 is bent to a shallow V-shape by horizontal rolls 54 in a preforming stand 31. The skelp 5 having been preformed is subjected to edge bending respectively in the narrow ranges divided in its width direction by three edge-forming stands 32, 33 and 34. The skelp 6C having been edge-formed is subjected to intermediate forming by cage roll stands 35W41. Cage rolls are narrower in a roll gap at a latter part. As a result, the portions on the inner side having been edge-bent are continuously formed and the skelp becomes gradually approximate to an O shape. The skelp 8 having been subjected to the intermediate forming is finish-formed by finned rolls in finish-forming stands 42W44. Thence, welding equipment is disposed.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8075879A JPS566730A (en) | 1979-06-28 | 1979-06-28 | Forming method of metal pipe |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8075879A JPS566730A (en) | 1979-06-28 | 1979-06-28 | Forming method of metal pipe |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS566730A true JPS566730A (en) | 1981-01-23 |
JPS5756409B2 JPS5756409B2 (en) | 1982-11-30 |
Family
ID=13727304
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8075879A Granted JPS566730A (en) | 1979-06-28 | 1979-06-28 | Forming method of metal pipe |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS566730A (en) |
-
1979
- 1979-06-28 JP JP8075879A patent/JPS566730A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS5756409B2 (en) | 1982-11-30 |
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