JPS5510309A - Method and apparatus for protecting of rolling mill - Google Patents

Method and apparatus for protecting of rolling mill

Info

Publication number
JPS5510309A
JPS5510309A JP8204378A JP8204378A JPS5510309A JP S5510309 A JPS5510309 A JP S5510309A JP 8204378 A JP8204378 A JP 8204378A JP 8204378 A JP8204378 A JP 8204378A JP S5510309 A JPS5510309 A JP S5510309A
Authority
JP
Japan
Prior art keywords
signal
rolling mill
plate thickness
allowable value
outputs
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
JP8204378A
Other languages
Japanese (ja)
Inventor
Motoaki Watabe
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP8204378A priority Critical patent/JPS5510309A/en
Publication of JPS5510309A publication Critical patent/JPS5510309A/en
Pending legal-status Critical Current

Links

Landscapes

  • Control Of Metal Rolling (AREA)

Abstract

PURPOSE: To enable perfect protection to be performed by so operating the device that abnormal signal is outputted by detecting the approach of an abnormally thick protion to the rolling mill and the bite of the abnormal thick portions is prevented based on this signal.
CONSTITUTION: A plate thickness detector 8 detects the thickness of the incoming rolling material and outputs the signal Δh proportional to the deviation between the target value and the actual plate thickness. A calculator 100, in which the allowable value α of fluctuations has been set, takes in the output Δh of the plate thickness detector 8, compares the same with the allowable value α and outputs a signal when Δh exceeds the allowable value α. A shear 9 is operated based on this signal and a rolling mill 5 and uncoiler 2 stop. At the same time, the signal for opening the roll gap at the maximum speed is emitted to a screw-down device 7, by which the breakdown of the rolling mill is perfectly prevented.
COPYRIGHT: (C)1980,JPO&Japio
JP8204378A 1978-07-07 1978-07-07 Method and apparatus for protecting of rolling mill Pending JPS5510309A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8204378A JPS5510309A (en) 1978-07-07 1978-07-07 Method and apparatus for protecting of rolling mill

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8204378A JPS5510309A (en) 1978-07-07 1978-07-07 Method and apparatus for protecting of rolling mill

Publications (1)

Publication Number Publication Date
JPS5510309A true JPS5510309A (en) 1980-01-24

Family

ID=13763481

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8204378A Pending JPS5510309A (en) 1978-07-07 1978-07-07 Method and apparatus for protecting of rolling mill

Country Status (1)

Country Link
JP (1) JPS5510309A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5079941A (en) * 1987-07-13 1992-01-14 Hoogovens Groep Bv Temper mill installation and shearing machine for use in such an installation

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5079941A (en) * 1987-07-13 1992-01-14 Hoogovens Groep Bv Temper mill installation and shearing machine for use in such an installation

Similar Documents

Publication Publication Date Title
JPS5510309A (en) Method and apparatus for protecting of rolling mill
JPS5417353A (en) Detecting method for coil diameter of coiler
JPS55122615A (en) Plate breadth control method by cold roll tandem mill
JPS53119767A (en) Preventing apparatus for entering of rolled material of anomalous thickness
JPS57106408A (en) Method for presuming rolling load
JPS5686615A (en) Automatic thickness controlling method for rolling mill
JPS53118134A (en) Overload preventing means of paper discharger in copiers
JPS5689312A (en) Method of interrupting power source for tandem mill
JPS55122612A (en) Shape control method in strip rolling
JPS5471759A (en) Tension controller for tandem mill
JPS5744409A (en) Sheet breadth controller for hot rolling mill
JPS57124508A (en) Method and device for cold rolling of strip
JPS5457452A (en) Detecting method for plugging of rolling-mill-oil injection nozzle in cold rolling mill
JPS56117814A (en) Method and apparatus for controlling breadth of sheet in hot rolling mill
JPS5443157A (en) Hot rolling method for hot strip
JPS5588908A (en) Detector for thickness of strip in temper rolling mill
JPS5217041A (en) System for detecting a point on a transmission line where an abnormal state occurs
JPS56126017A (en) Emergency stop control system of rolling plant
JPS56154210A (en) Controlling method for rolling reduction of rolling mill
JPS56144810A (en) Stopping method for operation of rolling mill in case of occurrence of sheet fracture
JPS5722811A (en) Method for automatic control of plate thickness of multistand rolling mill
JPS5584212A (en) Shape control device in rolling mill
JPS55139104A (en) Controller for rolling mill
JPS55147413A (en) Rolling gauge control method
JPS5762120A (en) Piling method of steel plate and its device