JPS5750209A - Controlling method for sheet breadth in hot roughing process - Google Patents
Controlling method for sheet breadth in hot roughing processInfo
- Publication number
- JPS5750209A JPS5750209A JP55126356A JP12635680A JPS5750209A JP S5750209 A JPS5750209 A JP S5750209A JP 55126356 A JP55126356 A JP 55126356A JP 12635680 A JP12635680 A JP 12635680A JP S5750209 A JPS5750209 A JP S5750209A
- Authority
- JP
- Japan
- Prior art keywords
- breadth
- slab
- stand
- rolling reduction
- skid mark
- 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
- Control Of Metal Rolling (AREA)
Abstract
PURPOSE: To improve the accuracy of breadth of a finally obtained sheet product, by adjusting the rolling reduction of each stand of a roughing mill group.
CONSTITUTION: At a hot roughing process for a slab to be rolled later into a steel sheet, the rolling reduction to be given to the top and bottom of a slab is made larger at an upstream stand as compared with that at an intermediate stand, and is made smaller at a downstream stand wherein the spread of the slab is small. By thus varying the reducing schedule during a rolling pass for a single slab, the breadth constriction at the top and bottom of the slab is reduced. At an upstream stand, the rolling reduction to be given to a part having a skid mark is made smaller than other parts having no skid mark, in order to reduce the breadth deviation at the part having a skid mark. By the present method, the breadth fluctuation is prevented so that the accuracy of breadth is greatly improved.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55126356A JPS5750209A (en) | 1980-09-10 | 1980-09-10 | Controlling method for sheet breadth in hot roughing process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55126356A JPS5750209A (en) | 1980-09-10 | 1980-09-10 | Controlling method for sheet breadth in hot roughing process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5750209A true JPS5750209A (en) | 1982-03-24 |
Family
ID=14933148
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP55126356A Pending JPS5750209A (en) | 1980-09-10 | 1980-09-10 | Controlling method for sheet breadth in hot roughing process |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5750209A (en) |
-
1980
- 1980-09-10 JP JP55126356A patent/JPS5750209A/en active Pending
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