JPS56142406A - Device for detecting abnormality of roll in rolling unit - Google Patents
Device for detecting abnormality of roll in rolling unitInfo
- Publication number
- JPS56142406A JPS56142406A JP4653380A JP4653380A JPS56142406A JP S56142406 A JPS56142406 A JP S56142406A JP 4653380 A JP4653380 A JP 4653380A JP 4653380 A JP4653380 A JP 4653380A JP S56142406 A JPS56142406 A JP S56142406A
- Authority
- JP
- Japan
- Prior art keywords
- roll
- thickness
- revolution speed
- eccentricity
- abnormality
- 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
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Abstract
PURPOSE: To detect the abnormality of a roll such as eccentricity, break, etc., quickly and automatically by extracting only the variation component of a period corresponding to the revolution speed of the roll from the measured values obtained with a thickness meter used for measuring the thickness of the rolled plate.
CONSTITUTION: A rolled plate 10 is rolled to a specified thickness by a rolling roll 9 and the thickness is measured with a thickness meter 11. If a radiation thickness meter is used, it transmits signals corresponding to measured values to a variable band-pass filter 12. A detector 13 outputs a voltage proportionate to the revolution speed of the roll 9 and the filter 12 extracts only the variation of the frequency component corresponding to the revolution speed of the roll 9 from the thickness signals. A signal level judging circuit 14 judges if the eccentricity value of the roll 9 has exceeded its allowable standard level and transmits a signal to a relay 16 to give an alarm 17 when the exceeded time has passed a certain period. By so doing, the abnormality of the roll such as eccentricity, break, etc., can be detected quickly and automatically.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4653380A JPS56142406A (en) | 1980-04-09 | 1980-04-09 | Device for detecting abnormality of roll in rolling unit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4653380A JPS56142406A (en) | 1980-04-09 | 1980-04-09 | Device for detecting abnormality of roll in rolling unit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS56142406A true JPS56142406A (en) | 1981-11-06 |
Family
ID=12749921
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4653380A Pending JPS56142406A (en) | 1980-04-09 | 1980-04-09 | Device for detecting abnormality of roll in rolling unit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56142406A (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4926186A (en) * | 1972-07-04 | 1974-03-08 |
-
1980
- 1980-04-09 JP JP4653380A patent/JPS56142406A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4926186A (en) * | 1972-07-04 | 1974-03-08 |
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