JPS56117818A - Controlling method for tension in hot finishing pass - Google Patents

Controlling method for tension in hot finishing pass

Info

Publication number
JPS56117818A
JPS56117818A JP1909280A JP1909280A JPS56117818A JP S56117818 A JPS56117818 A JP S56117818A JP 1909280 A JP1909280 A JP 1909280A JP 1909280 A JP1909280 A JP 1909280A JP S56117818 A JPS56117818 A JP S56117818A
Authority
JP
Japan
Prior art keywords
tension
rolled material
moment
tail end
rolling
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
JP1909280A
Other languages
Japanese (ja)
Other versions
JPS5923885B2 (en
Inventor
Seiji Konishi
Kazuyuki Tashiro
Shinya Tanifuji
Yasuo Morooka
Takakazu Sakurai
Masaaki Nakajima
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
Nippon Steel Corp
Original Assignee
Hitachi Ltd
Nippon 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 Hitachi Ltd, Nippon Steel Corp filed Critical Hitachi Ltd
Priority to JP55019092A priority Critical patent/JPS5923885B2/en
Publication of JPS56117818A publication Critical patent/JPS56117818A/en
Publication of JPS5923885B2 publication Critical patent/JPS5923885B2/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
    • B21B37/48—Tension control; Compression control
    • B21B37/52—Tension control; Compression control by drive motor control

Landscapes

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

Abstract

PURPOSE: To stabilize a rolling work, by changing an aimed tension value or a manipulated variable so as to match the preset value, in order to eliminate an instability occurring before and after the tail end of the rolled material passes over each of rolling stands.
CONSTITUTION: The tension of the rolled material is controlled by adjusting the speed of plural rolling stands for rolling the material depending on the commanded tension value and the detected actual value of the tension of the rolled material. In this case, the commanded tension value is gradually reduced from a moment of a preset time later than a specified moment before the tail end of the rolled material passes through the upstream stand of adjoining two stands, and the commanded tension value is made just or almost zero at the moment that the tail end of the rolled material passes through the upstream stand. By thus gradually reducing the front tension of the upstream stand from a moment a little earlier than the moment that the tail end of the rolled material passes through the upstream stand, thus the instability of the rolling work is prevented.
COPYRIGHT: (C)1981,JPO&Japio
JP55019092A 1980-02-20 1980-02-20 Tension control method for hot finish rolling Expired JPS5923885B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55019092A JPS5923885B2 (en) 1980-02-20 1980-02-20 Tension control method for hot finish rolling

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55019092A JPS5923885B2 (en) 1980-02-20 1980-02-20 Tension control method for hot finish rolling

Publications (2)

Publication Number Publication Date
JPS56117818A true JPS56117818A (en) 1981-09-16
JPS5923885B2 JPS5923885B2 (en) 1984-06-05

Family

ID=11989816

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55019092A Expired JPS5923885B2 (en) 1980-02-20 1980-02-20 Tension control method for hot finish rolling

Country Status (1)

Country Link
JP (1) JPS5923885B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011000633A (en) * 2009-06-22 2011-01-06 Kobe Steel Ltd Method and device for regulating tension of tail end in multistage rolling machine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011000633A (en) * 2009-06-22 2011-01-06 Kobe Steel Ltd Method and device for regulating tension of tail end in multistage rolling machine

Also Published As

Publication number Publication date
JPS5923885B2 (en) 1984-06-05

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