JPS57115913A - Automatic thickness controller of rolling mill - Google Patents

Automatic thickness controller of rolling mill

Info

Publication number
JPS57115913A
JPS57115913A JP56001179A JP117981A JPS57115913A JP S57115913 A JPS57115913 A JP S57115913A JP 56001179 A JP56001179 A JP 56001179A JP 117981 A JP117981 A JP 117981A JP S57115913 A JPS57115913 A JP S57115913A
Authority
JP
Japan
Prior art keywords
output
thickness
control
turned
automatic
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
JP56001179A
Other languages
Japanese (ja)
Inventor
Tadashige Furuta
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 JP56001179A priority Critical patent/JPS57115913A/en
Publication of JPS57115913A publication Critical patent/JPS57115913A/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/16—Control of thickness, width, diameter or other transverse dimensions
    • B21B37/18—Automatic gauge control

Abstract

PURPOSE:To eliminate breakages of rolling materials which usually occur immediately after automatic thickness control is turned on in a system where the thickness is controlled through the roll velocity, by gradually expanding the automatic thickness control by limiting the output immediately after the control is turned on. CONSTITUTION:When a steel plate is to be rolled so that the thickness of the steel plate at the outlet side of a stand 2 becomes a target value, the roll velocity of the stand 2 is controlled by an automatic thickness controlling device 7 in such a way that the deflection DELTAh in detected thickness of a thickness detector 6 is set to zero or approximately zero. In order to obtain stable responses by the automatic control system, the deflection DELTAh is multiplied by the gain at a multiplier 11 and processed at a proportion plus integrator 12, and a roll velocity control output DELTAVREF is outputted. When the automatic thickness control is turned on (when a relay RY is turned on) under this condition, an amplifier 23 functions as an integrator and the output is gradually integrated from 0V, and the output is raised to a voltage ZD after a fixed time. Since this time is changed by a limit time setting circuit 22 and an amplifier 24 inverses the polarity of an output A, this output B becomes -A. The outputs A and B are inputted into an output limit circuit 21 of the device 12, and abrupt changes in the output DELTAVREF are eliminated. o DELTAVREF are eliminated.
JP56001179A 1981-01-09 1981-01-09 Automatic thickness controller of rolling mill Pending JPS57115913A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56001179A JPS57115913A (en) 1981-01-09 1981-01-09 Automatic thickness controller of rolling mill

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56001179A JPS57115913A (en) 1981-01-09 1981-01-09 Automatic thickness controller of rolling mill

Publications (1)

Publication Number Publication Date
JPS57115913A true JPS57115913A (en) 1982-07-19

Family

ID=11494214

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56001179A Pending JPS57115913A (en) 1981-01-09 1981-01-09 Automatic thickness controller of rolling mill

Country Status (1)

Country Link
JP (1) JPS57115913A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995000265A1 (en) * 1993-06-23 1995-01-05 Davy Mckee (Sheffield) Limited Control of single stand/reversing mills

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5229428A (en) * 1975-09-01 1977-03-05 Kubota Ltd Method of forming mold
JPS5344035A (en) * 1976-10-04 1978-04-20 Mita Industrial Co Ltd Roller applicator developing device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5229428A (en) * 1975-09-01 1977-03-05 Kubota Ltd Method of forming mold
JPS5344035A (en) * 1976-10-04 1978-04-20 Mita Industrial Co Ltd Roller applicator developing device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995000265A1 (en) * 1993-06-23 1995-01-05 Davy Mckee (Sheffield) Limited Control of single stand/reversing mills

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