JPS5732825A - Measuring method for length of steel plate - Google Patents

Measuring method for length of steel plate

Info

Publication number
JPS5732825A
JPS5732825A JP10848880A JP10848880A JPS5732825A JP S5732825 A JPS5732825 A JP S5732825A JP 10848880 A JP10848880 A JP 10848880A JP 10848880 A JP10848880 A JP 10848880A JP S5732825 A JPS5732825 A JP S5732825A
Authority
JP
Japan
Prior art keywords
length
bite
steel plate
crop
maximum point
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
JP10848880A
Other languages
Japanese (ja)
Other versions
JPS6354449B2 (en
Inventor
Takashi Sato
Yoshiyuki Takahashi
Takashi Mikuriya
Shigenobu Yokoe
Haruo Senda
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 JP10848880A priority Critical patent/JPS5732825A/en
Publication of JPS5732825A publication Critical patent/JPS5732825A/en
Publication of JPS6354449B2 publication Critical patent/JPS6354449B2/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
    • B21B37/70—Length control

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)
  • Control Of Metal Rolling (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)

Abstract

PURPOSE:To measure length at high accuracy by measuring from the first maximum point of rolling pressure far from the bite-in end, and making the length to the final maximum point of rolling pressure far form bite-off end effective length. CONSTITUTION:When the boundary between the bite in end crop part and effective part is rolled by rolls 12, 14, a maximum point of rolling pressure is generated in driving and driven sides. The maximum point is detected by comparators 32, 32A. The detected signal far from the bite end is detected by an AND circuit 54. The signal is sent to a top crop length counter 48 and pulse number corresponding to bite end crop length is integrated and stored. Comparators 32, 32A makes count until bite off. When the bottom of the steel plate 10 comes out from the work roll, signals are sent to counters 38, 38A and 50, and pulse number corresponding to bite- off end crop length of driving and driven sides is integrated. On the other hand, pulse number corresponding to the length from the top to bottom end of the steel plate 10 is integrated in the total length counter 50 and sent to a steel plate length arithmetic unit 56. Thus, crop length and effective length of the steel plate 10 are calculated.
JP10848880A 1980-08-07 1980-08-07 Measuring method for length of steel plate Granted JPS5732825A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10848880A JPS5732825A (en) 1980-08-07 1980-08-07 Measuring method for length of steel plate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10848880A JPS5732825A (en) 1980-08-07 1980-08-07 Measuring method for length of steel plate

Publications (2)

Publication Number Publication Date
JPS5732825A true JPS5732825A (en) 1982-02-22
JPS6354449B2 JPS6354449B2 (en) 1988-10-28

Family

ID=14486026

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10848880A Granted JPS5732825A (en) 1980-08-07 1980-08-07 Measuring method for length of steel plate

Country Status (1)

Country Link
JP (1) JPS5732825A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0452647Y2 (en) * 1988-11-09 1992-12-10
CN106540970A (en) * 2015-09-17 2017-03-29 鞍钢股份有限公司 A kind of hot-rolled intermediate billet length is monitored and aberration alarm method automatically

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0452647Y2 (en) * 1988-11-09 1992-12-10
CN106540970A (en) * 2015-09-17 2017-03-29 鞍钢股份有限公司 A kind of hot-rolled intermediate billet length is monitored and aberration alarm method automatically
CN106540970B (en) * 2015-09-17 2018-04-24 鞍钢股份有限公司 A kind of hot-rolled intermediate billet length monitors automatically and aberration alarm method

Also Published As

Publication number Publication date
JPS6354449B2 (en) 1988-10-28

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