JPS56114519A - Looper controller for continuous rolling mill - Google Patents

Looper controller for continuous rolling mill

Info

Publication number
JPS56114519A
JPS56114519A JP1803380A JP1803380A JPS56114519A JP S56114519 A JPS56114519 A JP S56114519A JP 1803380 A JP1803380 A JP 1803380A JP 1803380 A JP1803380 A JP 1803380A JP S56114519 A JPS56114519 A JP S56114519A
Authority
JP
Japan
Prior art keywords
thickness
gain
stand
controller
point arrives
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
JP1803380A
Other languages
Japanese (ja)
Other versions
JPH0126767B2 (en
Inventor
Okinori Nakashima
Fumio Watanabe
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 JP55018033A priority Critical patent/JPH0126767B2/ja
Publication of JPS56114519A publication Critical patent/JPS56114519A/en
Publication of JPH0126767B2 publication Critical patent/JPH0126767B2/ja
Expired 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
    • B21B37/48Tension control; Compression control
    • B21B37/50Tension control; Compression control by looper control
    • 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 effectively control a strip tension and a looper height through the overall rolling work, by setting the control gain and reference value in a looper controller according to the rolling conditions before and after changing the thickness. CONSTITUTION:The thickness changer 6 computes the control gains K1 and K2 of the control actions before and after changing the thickness, and inputs the gain K1 to the controller 9 until the thickness changing point arrives at the first stand 2. Thereafter, until the thickness changing point arrives at the (i+1)th stand 3, the gain K1 is altered to the gain K2 along a ramp and the intermediate gain is inputted to the controller 9; after the thickness changing point arrives at the stand 3, the gain K2 is inputted to the controller 9. Similarly, the reference value changer 7 inputs the reference values t1* and h1* to the adder 8; thereafter, until the thickness changing point arrives at the stand 3, the reference values t1* and h1* are altered to t2* and h2* along a ramp and are inputted to the adder 8; after the thickness changing point arrives at the stand 3, the reference values t1* and h1* are inputted to the adder 8.
JP55018033A 1980-02-16 1980-02-16 Expired JPH0126767B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55018033A JPH0126767B2 (en) 1980-02-16 1980-02-16

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55018033A JPH0126767B2 (en) 1980-02-16 1980-02-16

Publications (2)

Publication Number Publication Date
JPS56114519A true JPS56114519A (en) 1981-09-09
JPH0126767B2 JPH0126767B2 (en) 1989-05-25

Family

ID=11960349

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55018033A Expired JPH0126767B2 (en) 1980-02-16 1980-02-16

Country Status (1)

Country Link
JP (1) JPH0126767B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020016455A (en) * 2000-08-25 2002-03-04 신현준 Looper control method of stands in hot strip mill
WO2006119998A1 (en) * 2005-05-11 2006-11-16 Corus Staal Bv Method and apparatus for producing strip having a variable thickness
CN107716559A (en) * 2017-09-26 2018-02-23 北京首钢自动化信息技术有限公司 A kind of control method for preventing twin pressure roller gateway tension variation excessive
JP2022510024A (en) * 2018-12-06 2022-01-25 エス・エム・エス・グループ・ゲゼルシャフト・ミト・ベシュレンクテル・ハフツング Methods for operating rolling stands for stepwise rolling

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020016455A (en) * 2000-08-25 2002-03-04 신현준 Looper control method of stands in hot strip mill
WO2006119998A1 (en) * 2005-05-11 2006-11-16 Corus Staal Bv Method and apparatus for producing strip having a variable thickness
CN107716559A (en) * 2017-09-26 2018-02-23 北京首钢自动化信息技术有限公司 A kind of control method for preventing twin pressure roller gateway tension variation excessive
CN107716559B (en) * 2017-09-26 2019-03-01 北京首钢自动化信息技术有限公司 A kind of control method for preventing twin pressure roller entrance tension variation excessive
JP2022510024A (en) * 2018-12-06 2022-01-25 エス・エム・エス・グループ・ゲゼルシャフト・ミト・ベシュレンクテル・ハフツング Methods for operating rolling stands for stepwise rolling

Also Published As

Publication number Publication date
JPH0126767B2 (en) 1989-05-25

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