JPS5662608A - Rolling controlling method or steel bar of the like - Google Patents

Rolling controlling method or steel bar of the like

Info

Publication number
JPS5662608A
JPS5662608A JP13713779A JP13713779A JPS5662608A JP S5662608 A JPS5662608 A JP S5662608A JP 13713779 A JP13713779 A JP 13713779A JP 13713779 A JP13713779 A JP 13713779A JP S5662608 A JPS5662608 A JP S5662608A
Authority
JP
Japan
Prior art keywords
length
forecast
blank material
expected
measured
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
JP13713779A
Other languages
Japanese (ja)
Inventor
Seiji Ino
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.)
JFE Steel Corp
Original Assignee
Kawasaki 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 Kawasaki Steel Corp filed Critical Kawasaki Steel Corp
Priority to JP13713779A priority Critical patent/JPS5662608A/en
Publication of JPS5662608A publication Critical patent/JPS5662608A/en
Pending 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
    • B21B37/70—Length control
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2261/00—Product parameters
    • B21B2261/12—Length

Landscapes

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

Abstract

PURPOSE:To prevent the production of irregular length products by comparing a forecast length and an expected length, and giving tension to the blank material between stands in order to make the insufficient length of the forecast length zero when the forecast length is short of the expected length. CONSTITUTION:A blank material weight W is measured in a blank material weighing process 2, and based on this, a forecast length calculating process 6 calculates a forecast length L1. A comparing arithmetic process 7 outputs the operated difference C (L1-L2) of an expected length L2 and L1, and a tension calculation controlling process 8 gives instruction to decrease the number of revolutions of the upper steam side stand of a rolling process 4 to the number of revolutions corresponding to C. The sectional width of the blank material is measured in a sectional size measuring process 9, and the blank material length is measured in the next length measuring process 10. If this actually measured value differs from the expected length L2, this difference is arithmetically processed and is fed back to the forecast length calculating process 6 via a loss amount correcting process 13, whereby the forecast length L1 is corrected.
JP13713779A 1979-10-23 1979-10-23 Rolling controlling method or steel bar of the like Pending JPS5662608A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13713779A JPS5662608A (en) 1979-10-23 1979-10-23 Rolling controlling method or steel bar of the like

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13713779A JPS5662608A (en) 1979-10-23 1979-10-23 Rolling controlling method or steel bar of the like

Publications (1)

Publication Number Publication Date
JPS5662608A true JPS5662608A (en) 1981-05-28

Family

ID=15191679

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13713779A Pending JPS5662608A (en) 1979-10-23 1979-10-23 Rolling controlling method or steel bar of the like

Country Status (1)

Country Link
JP (1) JPS5662608A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100388040B1 (en) * 1999-07-14 2003-06-18 주식회사 포스코 A method for manufacturing a thick steel plate

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100388040B1 (en) * 1999-07-14 2003-06-18 주식회사 포스코 A method for manufacturing a thick steel plate

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