JPS5750207A - Controlling method for timing control in controlling roll bending - Google Patents

Controlling method for timing control in controlling roll bending

Info

Publication number
JPS5750207A
JPS5750207A JP55125616A JP12561680A JPS5750207A JP S5750207 A JPS5750207 A JP S5750207A JP 55125616 A JP55125616 A JP 55125616A JP 12561680 A JP12561680 A JP 12561680A JP S5750207 A JPS5750207 A JP S5750207A
Authority
JP
Japan
Prior art keywords
stand
inputted
signal
counter
steel sheet
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
JP55125616A
Other languages
Japanese (ja)
Inventor
Akiyoshi Mifune
Osamu Iiyoshi
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
Sumitomo Metal Industries 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 Sumitomo Metal Industries Ltd filed Critical Sumitomo Metal Industries Ltd
Priority to JP55125616A priority Critical patent/JPS5750207A/en
Publication of JPS5750207A publication Critical patent/JPS5750207A/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
    • B21B37/28—Control of flatness or profile during rolling of strip, sheets or plates
    • B21B37/38—Control of flatness or profile during rolling of strip, sheets or plates using roll bending
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2273/00—Path parameters
    • B21B2273/06—Threading
    • B21B2273/08—Threading-in or before threading-in

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Metal Rolling (AREA)

Abstract

PURPOSE: To improve the yield of a steel sheet and its threadability, by automatically controlling the roll bending action at a point of time wherein the tip of a steel sheet is bitten by a rolling stand concerned.
CONSTITUTION: A detecting signal of a bite detector 4 installed in a former stand 2 of a tandem mill, and a signal of a pulse generator 6 installed in work rolls 5, 5 of the stand 2, are inputted to a counter 7. The counter 7 counts the pulse signal from a point of time wherein a detecting signal is inputted, and the output of the counter 7 is inputted to a comparator 12. The comparator 12 compares the inputted count value with a distance (distance between the stands 1, 2) presetted in a distance setter 13; when these compared values become equal, an equivalent signal is inputted to a bending changeover valve 10, and hereby, the bending action for a latter stand 1 is controlled. As a result, the bending control for the stand 1 is performed at a point of time wherein the tip of the steel sheet 3 is bitten by the stand 1.
COPYRIGHT: (C)1982,JPO&Japio
JP55125616A 1980-09-09 1980-09-09 Controlling method for timing control in controlling roll bending Pending JPS5750207A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55125616A JPS5750207A (en) 1980-09-09 1980-09-09 Controlling method for timing control in controlling roll bending

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55125616A JPS5750207A (en) 1980-09-09 1980-09-09 Controlling method for timing control in controlling roll bending

Publications (1)

Publication Number Publication Date
JPS5750207A true JPS5750207A (en) 1982-03-24

Family

ID=14914483

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55125616A Pending JPS5750207A (en) 1980-09-09 1980-09-09 Controlling method for timing control in controlling roll bending

Country Status (1)

Country Link
JP (1) JPS5750207A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010120046A (en) * 2008-11-19 2010-06-03 Nippon Steel Corp Plate rolling method
EP4029618A1 (en) * 2021-01-18 2022-07-20 Primetals Technologies Germany GmbH Rolling with minimization of collapse of bending force in tapping

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010120046A (en) * 2008-11-19 2010-06-03 Nippon Steel Corp Plate rolling method
EP4029618A1 (en) * 2021-01-18 2022-07-20 Primetals Technologies Germany GmbH Rolling with minimization of collapse of bending force in tapping
WO2022152781A1 (en) 2021-01-18 2022-07-21 Primetals Technologies Germany Gmbh Rolling with minimisation of a drop in the bending force upon entry

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