JPS5630019A - Shape controlling method for rolled sheet material - Google Patents

Shape controlling method for rolled sheet material

Info

Publication number
JPS5630019A
JPS5630019A JP10687479A JP10687479A JPS5630019A JP S5630019 A JPS5630019 A JP S5630019A JP 10687479 A JP10687479 A JP 10687479A JP 10687479 A JP10687479 A JP 10687479A JP S5630019 A JPS5630019 A JP S5630019A
Authority
JP
Japan
Prior art keywords
flow rate
roll
flow
pulse wave
coolant
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
JP10687479A
Other languages
Japanese (ja)
Other versions
JPS6054801B2 (en
Inventor
Katsuyuki Matsumiya
Hiroo Oshima
Kokichi Sakamaki
Norio Fukuyama
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.)
Kobe Steel Ltd
Shinko Electric Co Ltd
Original Assignee
Kobe Steel Ltd
Shinko 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 Kobe Steel Ltd, Shinko Electric Co Ltd filed Critical Kobe Steel Ltd
Priority to JP54106874A priority Critical patent/JPS6054801B2/en
Publication of JPS5630019A publication Critical patent/JPS5630019A/en
Publication of JPS6054801B2 publication Critical patent/JPS6054801B2/en
Expired 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
    • B21B37/30—Control of flatness or profile during rolling of strip, sheets or plates using roll camber control
    • B21B37/32—Control of flatness or profile during rolling of strip, sheets or plates using roll camber control by cooling, heating or lubricating the rolls

Landscapes

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

Abstract

PURPOSE:To improve the flow rate control for the roll coolant oil, by carrying out the PWM control for controlling the flow rate of the roll coolant oil which is hardly effected by only adjusting the opening of the flow control valve, so as to obtain a pulse flow. CONSTITUTION:When the necessary flow rate of the coolant oil is an intermediate value hardly obtainable by adjusting the opening of the flow control valve of the injection nozzle arranged at an arbitrary point along the roll barrel, the opening adjustment of one of the flow control valves is repeated at a constant period sufficiently shorter than the roll's thermal time constant; hereby, the nozzle output is made to take a pulse wave-form, and the PWM control is carried out so as to equalize the mean value of this pulse wave-form nozzle output to the commanded value. For example, when the first flow control valve 2 delivers much more flow of the coolant oil than the commanded value, the pulse wave-form A possessing the pulse width alpha2 is made depending on the PWM command so as to equalize the mean flow rate as the PWM output to the commanded coolant flow rate alpha. The period T is sufficiently shorter than the roll's thermal time constant, and the coolant flow rate becomes equal to the mean value alpha1 of the pulse wave-form A. Hereby, the distortion of the rolled sheet material is reduced.
JP54106874A 1979-08-21 1979-08-21 Shape control method for rolled plate material Expired JPS6054801B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54106874A JPS6054801B2 (en) 1979-08-21 1979-08-21 Shape control method for rolled plate material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54106874A JPS6054801B2 (en) 1979-08-21 1979-08-21 Shape control method for rolled plate material

Publications (2)

Publication Number Publication Date
JPS5630019A true JPS5630019A (en) 1981-03-26
JPS6054801B2 JPS6054801B2 (en) 1985-12-02

Family

ID=14444671

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54106874A Expired JPS6054801B2 (en) 1979-08-21 1979-08-21 Shape control method for rolled plate material

Country Status (1)

Country Link
JP (1) JPS6054801B2 (en)

Also Published As

Publication number Publication date
JPS6054801B2 (en) 1985-12-02

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