JPS55109509A - Controlling method for double chock bender in continuous rolling mill - Google Patents

Controlling method for double chock bender in continuous rolling mill

Info

Publication number
JPS55109509A
JPS55109509A JP1527979A JP1527979A JPS55109509A JP S55109509 A JPS55109509 A JP S55109509A JP 1527979 A JP1527979 A JP 1527979A JP 1527979 A JP1527979 A JP 1527979A JP S55109509 A JPS55109509 A JP S55109509A
Authority
JP
Japan
Prior art keywords
bender
steel sheet
signal
stand
load cell
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
JP1527979A
Other languages
Japanese (ja)
Inventor
Kiyoshi Kizaki
Tsutomu Hara
Hisashi Honjo
Takashi Emori
Masatomo Terakawa
Yoshiaki Takashima
Akihiro Kamatani
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.)
IHI Corp
Nippon Steel Corp
Original Assignee
IHI 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 IHI Corp, Nippon Steel Corp filed Critical IHI Corp
Priority to JP1527979A priority Critical patent/JPS55109509A/en
Publication of JPS55109509A publication Critical patent/JPS55109509A/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

Landscapes

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

Abstract

PURPOSE: To thoroughly utilize the controllability of the double chock bender, by making as short as possible the increase condition at the tip end and tail end of the steel sheet, and by making utilizable the decrease condition at the middle part of the steel sheet.
CONSTITUTION: At the same time as the tip end of the just rolled material is bitten into the crown control stand F4, the signal of load cell 12 is inputted to the arithmetic circuit 13 whose output is given to the control circuit 14; hereby, the bender is changed at once to the decrease condition, and the crown control is continued according to the external signal 15. At the moment that the tail end of steel sheet passes over the stand F3 in front of the crown control stand F4, the signal of load cell 12' is inputted to the arithmetic circuit 13; and the timing of arrival of the tail end of the steel sheet at the control stand F4 is previously operated and forecast by the arithmetic circuit 13 depending on the rotational speed signal given by the rotation detector 16 and the rolling load signal produced from the load cell 12. Just before that timing, the bender 5 is changed to the increase side by the control circuit 14. According to this method, the decrease side controllability of the bender 5 can be effectively utilized.
COPYRIGHT: (C)1980,JPO&Japio
JP1527979A 1979-02-13 1979-02-13 Controlling method for double chock bender in continuous rolling mill Pending JPS55109509A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1527979A JPS55109509A (en) 1979-02-13 1979-02-13 Controlling method for double chock bender in continuous rolling mill

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1527979A JPS55109509A (en) 1979-02-13 1979-02-13 Controlling method for double chock bender in continuous rolling mill

Publications (1)

Publication Number Publication Date
JPS55109509A true JPS55109509A (en) 1980-08-23

Family

ID=11884409

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1527979A Pending JPS55109509A (en) 1979-02-13 1979-02-13 Controlling method for double chock bender in continuous rolling mill

Country Status (1)

Country Link
JP (1) JPS55109509A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4458515A (en) * 1982-05-03 1984-07-10 Ishikawajima-Harima Jukogyo Kabushiki Kaisha Method and apparatus for variably controlling transverse rigidity of rolling machine
EP0891821A2 (en) * 1997-07-09 1999-01-20 MANNESMANN Aktiengesellschaft Method of rolling flat material and strips

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4458515A (en) * 1982-05-03 1984-07-10 Ishikawajima-Harima Jukogyo Kabushiki Kaisha Method and apparatus for variably controlling transverse rigidity of rolling machine
EP0891821A2 (en) * 1997-07-09 1999-01-20 MANNESMANN Aktiengesellschaft Method of rolling flat material and strips
EP0891821A3 (en) * 1997-07-09 2002-05-29 SMS Demag AG Method of rolling flat material and strips

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