JPS55112109A - Controlling method for rolling mill - Google Patents

Controlling method for rolling mill

Info

Publication number
JPS55112109A
JPS55112109A JP1903179A JP1903179A JPS55112109A JP S55112109 A JPS55112109 A JP S55112109A JP 1903179 A JP1903179 A JP 1903179A JP 1903179 A JP1903179 A JP 1903179A JP S55112109 A JPS55112109 A JP S55112109A
Authority
JP
Japan
Prior art keywords
rolls
rolling mill
reducing
rapture
rolling
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
JP1903179A
Other languages
Japanese (ja)
Inventor
Hiroshi Yamakoshi
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP1903179A priority Critical patent/JPS55112109A/en
Publication of JPS55112109A publication Critical patent/JPS55112109A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To prevent generation of flaws due to mutual slip of reducing rolls, by detecting the rapture of the rolled material, and by controlling the rolling mill so as to increase the roll gap and to stop the operation, in the rolling mill whose reducing rolls rotate at different speeds.
CONSTITUTION: In the rolling mill ST possessing the reducing rolls WT, WB, mutually rotating at different speeds for rolling the material S, if the detecting signal CUT due to the rapture of the sheet material S is generated from the inlet side tension controller TC1 or the outlet side tension controller TC2, the normally open contact CUT-1a is closed; hereby, the set point P2 for the opening of the roll gap is given to the rolling reduction controller HPC, and the gap between the rolls WT, WB, is quickly controlled to a point by which two rolls are released from mutual contact; at the same time, by closing the contact CUT-2a, the stop command is given to the controllers SC1, SC2, of the reducing roll driving motors M3, M4, and the operation is stopped; as a result, the treatment against the rapture of the sheet is made possible without generating flaws in the reducing rolls.
COPYRIGHT: (C)1980,JPO&Japio
JP1903179A 1979-02-22 1979-02-22 Controlling method for rolling mill Pending JPS55112109A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1903179A JPS55112109A (en) 1979-02-22 1979-02-22 Controlling method for rolling mill

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1903179A JPS55112109A (en) 1979-02-22 1979-02-22 Controlling method for rolling mill

Publications (1)

Publication Number Publication Date
JPS55112109A true JPS55112109A (en) 1980-08-29

Family

ID=11988075

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1903179A Pending JPS55112109A (en) 1979-02-22 1979-02-22 Controlling method for rolling mill

Country Status (1)

Country Link
JP (1) JPS55112109A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2486424A1 (en) * 1980-07-09 1982-01-15 Olin Corp METHOD AND APPARATUS FOR HIGH PUSH REDUCTION LAMINATION
JPS6188909A (en) * 1984-10-08 1986-05-07 Toshiba Corp Method of preventing collision between rolling rolls

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5322059A (en) * 1976-08-09 1978-03-01 Kubota Ltd Straw dropper in thresher
JPS5337566A (en) * 1976-09-21 1978-04-06 Sumitomo Metal Ind Abnormality detector of hot rolling mill
JPS5358462A (en) * 1976-11-06 1978-05-26 Ishikawajima Harima Heavy Ind Rolling method and its apparatus

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5322059A (en) * 1976-08-09 1978-03-01 Kubota Ltd Straw dropper in thresher
JPS5337566A (en) * 1976-09-21 1978-04-06 Sumitomo Metal Ind Abnormality detector of hot rolling mill
JPS5358462A (en) * 1976-11-06 1978-05-26 Ishikawajima Harima Heavy Ind Rolling method and its apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2486424A1 (en) * 1980-07-09 1982-01-15 Olin Corp METHOD AND APPARATUS FOR HIGH PUSH REDUCTION LAMINATION
JPS6188909A (en) * 1984-10-08 1986-05-07 Toshiba Corp Method of preventing collision between rolling rolls

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