JPS57177818A - Controlling method of rolling - Google Patents

Controlling method of rolling

Info

Publication number
JPS57177818A
JPS57177818A JP56061449A JP6144981A JPS57177818A JP S57177818 A JPS57177818 A JP S57177818A JP 56061449 A JP56061449 A JP 56061449A JP 6144981 A JP6144981 A JP 6144981A JP S57177818 A JPS57177818 A JP S57177818A
Authority
JP
Japan
Prior art keywords
plate
operating quantity
roll bending
rolling
screw
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
JP56061449A
Other languages
Japanese (ja)
Inventor
Shigeru Ogawa
Shuichi Hamauzu
Toshiaki Yoneda
Toshio Kikuma
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 JP56061449A priority Critical patent/JPS57177818A/en
Publication of JPS57177818A publication Critical patent/JPS57177818A/en
Granted 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
    • B21B37/28Control of flatness or profile during rolling of strip, sheets or plates
    • B21B37/38Control of flatness or profile during rolling of strip, sheets or plates using roll bending

Abstract

PURPOSE:To surely control the lengthwise plate-thickness distribution and plate-crown plate shape to conform them to the desired values and to improve the quality of steel plate, by performing repective controls of the lengthwise plate-thickness distribution and the plate-crown-plate-shape independently without mutual interference, in rolling a steel plate by a plate rolling mill having a roll bending device. CONSTITUTION:An independent operating quantity S0 of a screw-down device required to conform the lengthwise plate-thickness distribution of a steel plate to the desired value and an independent operating quantity F0 of roll bending force required to conform the plate-crown plate shape to the desired value are both computed at the same time in rolling a steel plate. An operating quantity DELTAF of roll bending force to compensate the fluctuation of rolling load DELTAP caused by the S0 and the plate-crown plate shape caused by the DELTAP are computed. An operating quantity F1 of roll bending force is obtained from F0+DELTAF, and an operating quantity S1 of the screw-down device is obtained from S0+DELTAS by computing an operating quantity DELTAS of the screw-down device to compensate the fluctuation of plate thickness of steel plate caused by F1. The screw- down device and the roll bending force of the rolling mill are controlled by adopting the F1 and S1 as the real operating quantity.
JP56061449A 1981-04-24 1981-04-24 Controlling method of rolling Granted JPS57177818A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56061449A JPS57177818A (en) 1981-04-24 1981-04-24 Controlling method of rolling

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56061449A JPS57177818A (en) 1981-04-24 1981-04-24 Controlling method of rolling

Publications (1)

Publication Number Publication Date
JPS57177818A true JPS57177818A (en) 1982-11-01

Family

ID=13171370

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56061449A Granted JPS57177818A (en) 1981-04-24 1981-04-24 Controlling method of rolling

Country Status (1)

Country Link
JP (1) JPS57177818A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6188910A (en) * 1984-10-08 1986-05-07 Nippon Steel Corp Control method of sheet crown by adaptive control of work-roll bender

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5246182A (en) * 1975-10-04 1977-04-12 Valls Conrado Apparatus for treating cloth

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5246182A (en) * 1975-10-04 1977-04-12 Valls Conrado Apparatus for treating cloth

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6188910A (en) * 1984-10-08 1986-05-07 Nippon Steel Corp Control method of sheet crown by adaptive control of work-roll bender
JPH0261845B2 (en) * 1984-10-08 1990-12-21 Nippon Steel Corp

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