JPS56114509A - Controlling method for rolling work changing thickness of hot rolled traveling strip - Google Patents

Controlling method for rolling work changing thickness of hot rolled traveling strip

Info

Publication number
JPS56114509A
JPS56114509A JP1740980A JP1740980A JPS56114509A JP S56114509 A JPS56114509 A JP S56114509A JP 1740980 A JP1740980 A JP 1740980A JP 1740980 A JP1740980 A JP 1740980A JP S56114509 A JPS56114509 A JP S56114509A
Authority
JP
Japan
Prior art keywords
thickness
strip
traveling
controller
rolling
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
JP1740980A
Other languages
Japanese (ja)
Inventor
Fumio Yoshida
Yoshikazu Kodera
Okinori Nakashima
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.)
Mitsubishi Electric Corp
Nippon Steel Corp
Original Assignee
Mitsubishi Electric Corp
Nippon Steel Corp
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 Mitsubishi Electric Corp, Nippon Steel Corp filed Critical Mitsubishi Electric Corp
Priority to JP1740980A priority Critical patent/JPS56114509A/en
Publication of JPS56114509A publication Critical patent/JPS56114509A/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B37/00Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/16Control of thickness, width, diameter or other transverse dimensions
    • B21B37/24Automatic variation of thickness according to a predetermined programme
    • B21B37/26Automatic variation of thickness according to a predetermined programme for obtaining one strip having successive lengths of different constant thickness

Abstract

PURPOSE: To smoothly, accurately carry out titled control before and after changing the thickness of traveling rolled strip, by temporarily interrupting the action of the automatic absolute thickness value controller during the transition period, and by restarting before or at the same time as the end of changing thickness of the traveling strip.
CONSTITUTION: The automatic absolute thickness value controller 5 operates the signals set from the screw position detector 3 and the rolling load detector 4 in order to obtain the thickness of strip 1 on the run-out side of the rolling mill 2; thus obtained thickness is compared with the aim thickness value sent from the run-out side aim thickness setter 7; the screw position is controlled so as to make zero the difference obtanined by the comparison during the normal rolling condition; under this normal condition, if the thickness of traveling strip is to be changed, the input unit 8 for inputting the timing of changing thickness of traveling rolled strip inputs the thickness change start signal to the conroller 5 which hereby interrupts its normal controlling action temporarily. Next, before or at the same time as the end of rolling work for the thickness changed traveling strip, the unit 8 inputs the thickness change end signal to the controller 5; at the same time, the controller 5 restarts its action just after or a specified time after receiving a new aim thickness value from the setter 7 and controls the drive of the screw driving controller 6.
COPYRIGHT: (C)1981,JPO&Japio
JP1740980A 1980-02-15 1980-02-15 Controlling method for rolling work changing thickness of hot rolled traveling strip Pending JPS56114509A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1740980A JPS56114509A (en) 1980-02-15 1980-02-15 Controlling method for rolling work changing thickness of hot rolled traveling strip

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1740980A JPS56114509A (en) 1980-02-15 1980-02-15 Controlling method for rolling work changing thickness of hot rolled traveling strip

Publications (1)

Publication Number Publication Date
JPS56114509A true JPS56114509A (en) 1981-09-09

Family

ID=11943196

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1740980A Pending JPS56114509A (en) 1980-02-15 1980-02-15 Controlling method for rolling work changing thickness of hot rolled traveling strip

Country Status (1)

Country Link
JP (1) JPS56114509A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61180607A (en) * 1984-10-02 1986-08-13 Nippon Steel Corp Control method for sheet thickness in rolling made for changing sheet-thickness during rolling
JPH0426273U (en) * 1990-06-26 1992-03-02

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4952155A (en) * 1972-09-21 1974-05-21
JPS51101766A (en) * 1975-03-05 1976-09-08 Hitachi Ltd
JPS51145448A (en) * 1975-06-10 1976-12-14 Tokyo Shibaura Electric Co Control device for hydraulic rolling mill
JPS52145358A (en) * 1976-05-31 1977-12-03 Hitachi Ltd Automatic thickness control device of rolling mill

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4952155A (en) * 1972-09-21 1974-05-21
JPS51101766A (en) * 1975-03-05 1976-09-08 Hitachi Ltd
JPS51145448A (en) * 1975-06-10 1976-12-14 Tokyo Shibaura Electric Co Control device for hydraulic rolling mill
JPS52145358A (en) * 1976-05-31 1977-12-03 Hitachi Ltd Automatic thickness control device of rolling mill

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61180607A (en) * 1984-10-02 1986-08-13 Nippon Steel Corp Control method for sheet thickness in rolling made for changing sheet-thickness during rolling
JPH0426273U (en) * 1990-06-26 1992-03-02

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