JPS57139419A - Plate thickness controlling method of reversible rolling mill - Google Patents

Plate thickness controlling method of reversible rolling mill

Info

Publication number
JPS57139419A
JPS57139419A JP56026391A JP2639181A JPS57139419A JP S57139419 A JPS57139419 A JP S57139419A JP 56026391 A JP56026391 A JP 56026391A JP 2639181 A JP2639181 A JP 2639181A JP S57139419 A JPS57139419 A JP S57139419A
Authority
JP
Japan
Prior art keywords
plate thickness
expression
extent
offset
actual
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
JP56026391A
Other languages
Japanese (ja)
Inventor
Yoshitaka Iwasaki
Akira Horibe
Koichi Kutsuwa
Takashi Sasaji
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.)
Nippon Steel Corp
Original Assignee
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 Nippon Steel Corp filed Critical Nippon Steel Corp
Priority to JP56026391A priority Critical patent/JPS57139419A/en
Publication of JPS57139419A publication Critical patent/JPS57139419A/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

Abstract

PURPOSE:To elevate the control accuracy, by calculating the extent of offset correction from both calculated plate thickness whose position has been made to correspond in the course of rolling, and actual plate thickness by a thickness meter, and correcting the extent of offset of the plate thickness calculating expression by said result, when executing the titled automatic plate thickness control. CONSTITUTION:In the plate thickness controlling method of a material to be rolled 3 of a reversible rolling mill 1 by AGC (automatic plate thickness control), plate thickness Hcal at a present rolling point A is calculated by the expression (7) from a roll gap, reaction force, etc. According to this constitution, each actual value in the expression (7) is synchronized with a mill pulse, its sampling is executed, said value is stored in a computer memory, subsequently when the same rolling point A' has reached a plate thickness meter 2 after DELTAt seconds, actual plate thickness Hr corresponding to the plate thickness Hcal is measured, the extent of offset (a') in the pass is derived by the expression (UU) from said Hcal and the actual thickness Hr, and the extent of offset (a) of the expression (I) is corrected by inputting said (a') to AGC at the real time so that the plate thickness is controlled. In this way, the control accuracy is elevated, and the yield rate is greatly elevated.
JP56026391A 1981-02-25 1981-02-25 Plate thickness controlling method of reversible rolling mill Pending JPS57139419A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56026391A JPS57139419A (en) 1981-02-25 1981-02-25 Plate thickness controlling method of reversible rolling mill

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56026391A JPS57139419A (en) 1981-02-25 1981-02-25 Plate thickness controlling method of reversible rolling mill

Publications (1)

Publication Number Publication Date
JPS57139419A true JPS57139419A (en) 1982-08-28

Family

ID=12192234

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56026391A Pending JPS57139419A (en) 1981-02-25 1981-02-25 Plate thickness controlling method of reversible rolling mill

Country Status (1)

Country Link
JP (1) JPS57139419A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59178502A (en) * 1983-03-29 1984-10-09 Mitsubishi Electric Corp System for measuring deviation in plate thickness

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59178502A (en) * 1983-03-29 1984-10-09 Mitsubishi Electric Corp System for measuring deviation in plate thickness

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