JPS57149006A - Rolling method of steel sheet having ununiform thickness in width direction - Google Patents
Rolling method of steel sheet having ununiform thickness in width directionInfo
- Publication number
- JPS57149006A JPS57149006A JP56033986A JP3398681A JPS57149006A JP S57149006 A JPS57149006 A JP S57149006A JP 56033986 A JP56033986 A JP 56033986A JP 3398681 A JP3398681 A JP 3398681A JP S57149006 A JPS57149006 A JP S57149006A
- Authority
- JP
- Japan
- Prior art keywords
- steel sheet
- convex
- rolling
- concave
- pass
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
- Control Of Metal Rolling (AREA)
Abstract
PURPOSE:To perform whole rolling pass by the same roll, by changing pass schedule at the rolling of steel sheet of convex or concave crown by a reversing mill. CONSTITUTION:At the rolling of steel sheet 10 by a reversing four high mill having back up rolls 11 and 15, and work rolls 12 and 14, steel sheet having convex or concave cross section with >=100mum crown is rolled by performing >=2 times of cold rolling by said mill. In this four high mill stand, the reduction rate for each pass is set at the gradually decreasing side in a case of convex cross-sectional steel-sheet and at the gradually increasing side in case of concave one, and then, the steel sheet with convex or concave crown quantity in the width direction is manufactured by the same roll, by gradually decreasing or increasing the reduction rate by >=5% basing on the reduction rate of the final pass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56033986A JPS57149006A (en) | 1981-03-11 | 1981-03-11 | Rolling method of steel sheet having ununiform thickness in width direction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56033986A JPS57149006A (en) | 1981-03-11 | 1981-03-11 | Rolling method of steel sheet having ununiform thickness in width direction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57149006A true JPS57149006A (en) | 1982-09-14 |
Family
ID=12401793
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56033986A Pending JPS57149006A (en) | 1981-03-11 | 1981-03-11 | Rolling method of steel sheet having ununiform thickness in width direction |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57149006A (en) |
-
1981
- 1981-03-11 JP JP56033986A patent/JPS57149006A/en active Pending
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