JPS56114513A - Changing method for thickness of strip during hot rolling work - Google Patents

Changing method for thickness of strip during hot rolling work

Info

Publication number
JPS56114513A
JPS56114513A JP1802680A JP1802680A JPS56114513A JP S56114513 A JPS56114513 A JP S56114513A JP 1802680 A JP1802680 A JP 1802680A JP 1802680 A JP1802680 A JP 1802680A JP S56114513 A JPS56114513 A JP S56114513A
Authority
JP
Japan
Prior art keywords
stand
thickness
variation
rolling
changing
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
JP1802680A
Other languages
Japanese (ja)
Other versions
JPH0433522B2 (en
Inventor
Okinori Nakashima
Seiji Konishi
Yoshiharu Hamazaki
Yoshikazu Kodera
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 JP1802680A priority Critical patent/JPS56114513A/en
Publication of JPS56114513A publication Critical patent/JPS56114513A/en
Publication of JPH0433522B2 publication Critical patent/JPH0433522B2/ja
Granted 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
    • B21B37/16—Control of thickness, width, diameter or other transverse dimensions
    • B21B37/24—Automatic variation of thickness according to a predetermined programme
    • B21B37/26—Automatic variation of thickness according to a predetermined programme for obtaining one strip having successive lengths of different constant thickness

Landscapes

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

Abstract

PURPOSE: To restrict the excessive fluctuations of tension ans looper angle to small values, by changing the screw position for every moment that the thickness changing point of the strip passes each stand, by correcting the variation of the mass flow, and by correcting the rolling speed of the pivot stand.
CONSTITUTION: At the moment that the thickness changing point of the rolled strip 1 ariives at the concerned rolling stand, the thickness change command is given successively to the screw position controllers 61W66. At the same time, depending on the actually measured value of thickness change in each stand, the finishing stand's computer-controller 7 computes the variation of forward slip and the variation of backward slip, and gives a command for relatively correcting the rolling speed of the stand to each of driving motors 31W36 of each stand; hereby, the variation of the mass flow is corrected. Moreover, the correction for the absolute value of rolling speed of whole rolling mill is added to the output of the main speed setter 5; depending on thus obtained summation, the command for changing the rolling speed of the pivot stand and other stand is given to each of driving motors 31W36 of each stand; hereby, the variation of rolling temperature caused by changing the thickness is corrected.
COPYRIGHT: (C)1981,JPO&Japio
JP1802680A 1980-02-16 1980-02-16 Changing method for thickness of strip during hot rolling work Granted JPS56114513A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1802680A JPS56114513A (en) 1980-02-16 1980-02-16 Changing method for thickness of strip during hot rolling work

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1802680A JPS56114513A (en) 1980-02-16 1980-02-16 Changing method for thickness of strip during hot rolling work

Publications (2)

Publication Number Publication Date
JPS56114513A true JPS56114513A (en) 1981-09-09
JPH0433522B2 JPH0433522B2 (en) 1992-06-03

Family

ID=11960146

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1802680A Granted JPS56114513A (en) 1980-02-16 1980-02-16 Changing method for thickness of strip during hot rolling work

Country Status (1)

Country Link
JP (1) JPS56114513A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58168411A (en) * 1982-03-31 1983-10-04 Nippon Steel Corp Controlling method of schedule change in tandem rolling mill
JPS5982102A (en) * 1982-10-30 1984-05-12 Toshiba Corp Rolling method
US4457154A (en) * 1981-03-23 1984-07-03 Mitsubishi Denki Kabushiki Kaisha Control method for multi-strand rolling mill
US5404738A (en) * 1992-07-01 1995-04-11 Kabushiki Kaisha Toshiba Method of controlling a hot strip finishing mill
WO1999024183A1 (en) * 1997-11-07 1999-05-20 Siemens Aktiengesellschaft Process and device for rolling a rolled strip with a variable thickness
WO2001002109A1 (en) * 1999-07-01 2001-01-11 Siemens Aktiengesellschaft Method and device for rolling a foil of varying thicknesses

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4844155A (en) * 1971-10-12 1973-06-25
JPS51134357A (en) * 1975-05-17 1976-11-20 Nippon Steel Corp Method and device for controlling continuously metal strip thickness

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4844155A (en) * 1971-10-12 1973-06-25
JPS51134357A (en) * 1975-05-17 1976-11-20 Nippon Steel Corp Method and device for controlling continuously metal strip thickness

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4457154A (en) * 1981-03-23 1984-07-03 Mitsubishi Denki Kabushiki Kaisha Control method for multi-strand rolling mill
JPS58168411A (en) * 1982-03-31 1983-10-04 Nippon Steel Corp Controlling method of schedule change in tandem rolling mill
JPS6350084B2 (en) * 1982-03-31 1988-10-06 Nippon Steel Corp
JPS5982102A (en) * 1982-10-30 1984-05-12 Toshiba Corp Rolling method
US5404738A (en) * 1992-07-01 1995-04-11 Kabushiki Kaisha Toshiba Method of controlling a hot strip finishing mill
WO1999024183A1 (en) * 1997-11-07 1999-05-20 Siemens Aktiengesellschaft Process and device for rolling a rolled strip with a variable thickness
WO2001002109A1 (en) * 1999-07-01 2001-01-11 Siemens Aktiengesellschaft Method and device for rolling a foil of varying thicknesses

Also Published As

Publication number Publication date
JPH0433522B2 (en) 1992-06-03

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