JPS57193214A - Rolling controlling method of continuous mill - Google Patents

Rolling controlling method of continuous mill

Info

Publication number
JPS57193214A
JPS57193214A JP56076625A JP7662581A JPS57193214A JP S57193214 A JPS57193214 A JP S57193214A JP 56076625 A JP56076625 A JP 56076625A JP 7662581 A JP7662581 A JP 7662581A JP S57193214 A JPS57193214 A JP S57193214A
Authority
JP
Japan
Prior art keywords
motor
stand
speed
fault
controlling
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
JP56076625A
Other languages
Japanese (ja)
Other versions
JPS6211926B2 (en
Inventor
Takeshi Onishi
Yukihiro Kono
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP56076625A priority Critical patent/JPS57193214A/en
Publication of JPS57193214A publication Critical patent/JPS57193214A/en
Publication of JPS6211926B2 publication Critical patent/JPS6211926B2/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
    • B21B37/46—Roll speed or drive motor control
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B33/00—Safety devices not otherwise provided for; Breaker blocks; Devices for freeing jammed rolls for handling cobbles; Overload safety devices
    • B21B2033/005—Cobble-freeing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2275/00—Mill drive parameters
    • B21B2275/02—Speed
    • B21B2275/04—Roll speed

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Metal Rolling (AREA)
  • Stopping Of Electric Motors (AREA)
  • Control Of Multiple Motors (AREA)

Abstract

PURPOSE:To prevent cobbling and breaking of a material, which are caused in a rolling material, by decelerating and controlling a motor of a normal stand, too, in the event of stopping one of driving motors of each stand due to occurrence of a fault of its electric system. CONSTITUTION:To a multiple continuous mill, a speed pattern switching device 12 is added. For instance, in case when a fault has occurred in an electric system of the third stand 3, a motor controlling panel 8-3 is immediately separated from a speed controller 10-3. Subsequently, to a motor 6-3, a generator control panel 9-3 is immediately connected, and it is decelerated and stopped. As for each other stand, a speed is controlled by a device 10 in accordance with an output signal of a pilot generator 7 coupled with each motor 6. When said fault has occurred, however, a speed controlling signal is switched to an output signal of a generator 7-3 since a speed pattern switching signal 5 has already been set to the device 12. As a result, each other motor 6 follows a deceleration pattern of the stand 3, decelerates and stops.
JP56076625A 1981-05-22 1981-05-22 Rolling controlling method of continuous mill Granted JPS57193214A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56076625A JPS57193214A (en) 1981-05-22 1981-05-22 Rolling controlling method of continuous mill

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56076625A JPS57193214A (en) 1981-05-22 1981-05-22 Rolling controlling method of continuous mill

Publications (2)

Publication Number Publication Date
JPS57193214A true JPS57193214A (en) 1982-11-27
JPS6211926B2 JPS6211926B2 (en) 1987-03-16

Family

ID=13610536

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56076625A Granted JPS57193214A (en) 1981-05-22 1981-05-22 Rolling controlling method of continuous mill

Country Status (1)

Country Link
JP (1) JPS57193214A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0527609Y2 (en) * 1987-10-15 1993-07-14

Also Published As

Publication number Publication date
JPS6211926B2 (en) 1987-03-16

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