JPS56114516A - Automatic thickness controller for continuous rolling mill - Google Patents

Automatic thickness controller for continuous rolling mill

Info

Publication number
JPS56114516A
JPS56114516A JP1803080A JP1803080A JPS56114516A JP S56114516 A JPS56114516 A JP S56114516A JP 1803080 A JP1803080 A JP 1803080A JP 1803080 A JP1803080 A JP 1803080A JP S56114516 A JPS56114516 A JP S56114516A
Authority
JP
Japan
Prior art keywords
thickness
stand
automatic
rolling
deviation
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.)
Granted
Application number
JP1803080A
Other languages
Japanese (ja)
Other versions
JPH02123B2 (en
Inventor
Okinori Nakashima
Yoshikazu Kodera
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 JP55018030A priority Critical patent/JPH02123B2/ja
Publication of JPS56114516A publication Critical patent/JPS56114516A/en
Publication of JPH02123B2 publication Critical patent/JPH02123B2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime 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 improve the accuracy of automatic thickness controlling function before and after changing the thickness, by interrupting the control of the first stand at the time of the thickness change, and by altering each constant coexisting in the rolling condition of the first stand and in the correction value of the screw position of the second stand.
CONSTITUTION: At changing the thickness, the feedforward type automatic thickness controller 6 receives the traveling strip's thickness change start signal for the rolling stand 1, interrupts the computation for run-out side thickness deviation, and memorizes the deviation value after forcibly making it zero. The controller 6 rememorizes the reference for computing new thickness depending on the rolling load and screw position just after or a specified time after the rolling stand 2 receives the thickness change end signal, and restarts the computation for the run-out side thickness deviation. During this period, the process for transmitting the memorized thickness value according to the strip's traveling speed continues, so that the automatic thickness control action of the downstream rolling stand 7 is automatically interrupted while the thickness is being changed, so that the feedforward automatic thickness control is restarted in a proper timing after ending the thickness change.
COPYRIGHT: (C)1981,JPO&Japio
JP55018030A 1980-02-16 1980-02-16 Expired - Lifetime JPH02123B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55018030A JPH02123B2 (en) 1980-02-16 1980-02-16

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55018030A JPH02123B2 (en) 1980-02-16 1980-02-16

Publications (2)

Publication Number Publication Date
JPS56114516A true JPS56114516A (en) 1981-09-09
JPH02123B2 JPH02123B2 (en) 1990-01-05

Family

ID=11960261

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55018030A Expired - Lifetime JPH02123B2 (en) 1980-02-16 1980-02-16

Country Status (1)

Country Link
JP (1) JPH02123B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007075850A (en) * 2005-09-14 2007-03-29 Nippon Steel Corp Thickness controller for continuous hot rolling mill, thickness control system, method and program therefor, and computer readable storage medium

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4892257A (en) * 1972-03-08 1973-11-30
JPS5148743A (en) * 1974-10-24 1976-04-27 Sumitomo Metal Ind
JPS5226343A (en) * 1975-08-25 1977-02-26 Hitachi Ltd Method to control schickness for rolling mill
JPS5517411A (en) * 1978-07-24 1980-02-06 Toyo Baldwin:Kk Load cell system of beam type shearing force detection

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4892257A (en) * 1972-03-08 1973-11-30
JPS5148743A (en) * 1974-10-24 1976-04-27 Sumitomo Metal Ind
JPS5226343A (en) * 1975-08-25 1977-02-26 Hitachi Ltd Method to control schickness for rolling mill
JPS5517411A (en) * 1978-07-24 1980-02-06 Toyo Baldwin:Kk Load cell system of beam type shearing force detection

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007075850A (en) * 2005-09-14 2007-03-29 Nippon Steel Corp Thickness controller for continuous hot rolling mill, thickness control system, method and program therefor, and computer readable storage medium

Also Published As

Publication number Publication date
JPH02123B2 (en) 1990-01-05

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