JPS56142406A - Device for detecting abnormality of roll in rolling unit - Google Patents

Device for detecting abnormality of roll in rolling unit

Info

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
Application number
JP4653380A
Other languages
Japanese (ja)
Inventor
Tatsuo Tsujii
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP4653380A priority Critical patent/JPS56142406A/en
Publication of JPS56142406A publication Critical patent/JPS56142406A/en
Pending legal-status Critical Current

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
JP4653380A 1980-04-09 1980-04-09 Device for detecting abnormality of roll in rolling unit Pending JPS56142406A (en)

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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4926186A (en) * 1972-07-04 1974-03-08

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4926186A (en) * 1972-07-04 1974-03-08

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