JPS56126006A - Rolling method - Google Patents
Rolling methodInfo
- Publication number
- JPS56126006A JPS56126006A JP3051680A JP3051680A JPS56126006A JP S56126006 A JPS56126006 A JP S56126006A JP 3051680 A JP3051680 A JP 3051680A JP 3051680 A JP3051680 A JP 3051680A JP S56126006 A JPS56126006 A JP S56126006A
- Authority
- JP
- Japan
- Prior art keywords
- edge crack
- signal
- roll gap
- allowable
- rolled sheet
- 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
- Metal Rolling (AREA)
- Control Of Metal Rolling (AREA)
Abstract
PURPOSE: To accomplish the rolling work with a large draft percentage, and to improve the efficiency, by detecting the edge crack of the rolled sheet, and by controlling the draft percentage to allowable values.
CONSTITUTION: At an early stage of the rolling work, the edge crack generated in the rolled sheet 5 is detected by the detector 6 whose output signal is then inputted to the signal processor 12 which produces a signal to the roll gap controller 11 while the input signal representing the edge crack is within the allowable range; hereby, the roll gap controller 11 actuates the hydraulic screw down device 8 for adjusting the roll gap so as to effect the allowable maximum draft percentage. If the edge crack of the rolled material 5 exceeds the allowable range, the signal processor 12 converts the input signal representing the unallowed excessive edge crack to a correction signal for the motor's rotational speed; this speed correction signal is inputted to each of motors 9 and 10. Thereby, the ratio between relatively different circumferential speeds of upper and lower work rolls 1, 2 driven respectively by motors 9, 10 is controlled; as this circumferential speed ratio between work rolls 1, 2 comes close to the value for the RD rolling condition, the edge crack of the rolled sheet 5 is improved to the allowable values.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3051680A JPS56126006A (en) | 1980-03-11 | 1980-03-11 | Rolling method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3051680A JPS56126006A (en) | 1980-03-11 | 1980-03-11 | Rolling method |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS56126006A true JPS56126006A (en) | 1981-10-02 |
Family
ID=12305966
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3051680A Pending JPS56126006A (en) | 1980-03-11 | 1980-03-11 | Rolling method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56126006A (en) |
-
1980
- 1980-03-11 JP JP3051680A patent/JPS56126006A/en active Pending
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