JPS5722811A - Method for automatic control of plate thickness of multistand rolling mill - Google Patents

Method for automatic control of plate thickness of multistand rolling mill

Info

Publication number
JPS5722811A
JPS5722811A JP9568180A JP9568180A JPS5722811A JP S5722811 A JPS5722811 A JP S5722811A JP 9568180 A JP9568180 A JP 9568180A JP 9568180 A JP9568180 A JP 9568180A JP S5722811 A JPS5722811 A JP S5722811A
Authority
JP
Japan
Prior art keywords
plate thickness
stand
plastic
coefft
stands
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
JP9568180A
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 JP9568180A priority Critical patent/JPS5722811A/en
Publication of JPS5722811A publication Critical patent/JPS5722811A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To improve the accuracy of controlling by performing feed forward plate thickness control of stands based on the plastic coeffts. operated from the gap and load change rates of the time when roll gaps are changed.
CONSTITUTION: The plate thickness at the point A existing in a thickness gage 10 on the outlet side of a No.1 stand is measured, and when the point A arrives at a No.2 stand, the controlled variable of the roll gap of the No.2 stand is calculated by an operator 9 based on the plastic coefft. having beforehand been stored, thereby performing feed forward plate thickness control. At the same instant of the above- mentioned control, the rolling load of the No.2 stand is detected with a load detector 21, and is read into the operator 9. Next, an actual plastic coefft. is obtained from the rate of change in the rolling load cuased on account of a change in the roll gap of the No.2 stand. Thence, the gain of the feed forward plate thickness control is corrected by this actual plastic coefft. and the roll gaps and speeds of the stands are so controlled as to maintain the target plate thicknesses and mass flows of the No.3 and subsequent stands.
COPYRIGHT: (C)1982,JPO&Japio
JP9568180A 1980-07-15 1980-07-15 Method for automatic control of plate thickness of multistand rolling mill Pending JPS5722811A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9568180A JPS5722811A (en) 1980-07-15 1980-07-15 Method for automatic control of plate thickness of multistand rolling mill

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9568180A JPS5722811A (en) 1980-07-15 1980-07-15 Method for automatic control of plate thickness of multistand rolling mill

Publications (1)

Publication Number Publication Date
JPS5722811A true JPS5722811A (en) 1982-02-05

Family

ID=14144235

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9568180A Pending JPS5722811A (en) 1980-07-15 1980-07-15 Method for automatic control of plate thickness of multistand rolling mill

Country Status (1)

Country Link
JP (1) JPS5722811A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57146414A (en) * 1981-03-02 1982-09-09 Kobe Steel Ltd Controlling method of sheet thickness in cold tandem mill
KR20020017624A (en) * 2000-08-31 2002-03-07 이구택 Thickness control method for top and bottom of plate

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57146414A (en) * 1981-03-02 1982-09-09 Kobe Steel Ltd Controlling method of sheet thickness in cold tandem mill
JPS6129806B2 (en) * 1981-03-02 1986-07-09 Kobe Steel Ltd
KR20020017624A (en) * 2000-08-31 2002-03-07 이구택 Thickness control method for top and bottom of plate

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