JPS57127517A - Tension controller for rolling mill - Google Patents

Tension controller for rolling mill

Info

Publication number
JPS57127517A
JPS57127517A JP56012892A JP1289281A JPS57127517A JP S57127517 A JPS57127517 A JP S57127517A JP 56012892 A JP56012892 A JP 56012892A JP 1289281 A JP1289281 A JP 1289281A JP S57127517 A JPS57127517 A JP S57127517A
Authority
JP
Japan
Prior art keywords
looper
roll
rolled stock
looper roll
torque
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
JP56012892A
Other languages
Japanese (ja)
Inventor
Katsumasa Matsuura
Haruo Kinoshita
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 JP56012892A priority Critical patent/JPS57127517A/en
Publication of JPS57127517A publication Critical patent/JPS57127517A/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B37/00Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/48Tension control; Compression control
    • B21B37/50Tension control; Compression control by looper control

Landscapes

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

Abstract

PURPOSE:To enable soft-landing of a looper roll on a rolled stock by installing a torque giving device and a speed detector in the looper device of a rolling mill and controlling a looper driving device by output of the detector. CONSTITUTION:A detector 8 that detects rotation speed of a looper roll 7 is provided in the lower part of a looper arm 6, and the number of rotations of the looper roll 7 that rotates in contact with a rolled stock is detected. At the same time, timing of speed reduction command is given correctly to a looper driving device by resistance torque of the looper roll 7 given by a torque giving device 9 that gives proper rotational load torque to the looper roll 7. Accordingly, ascension of the looper roll 7 is controlled quickly, and the looper roll can be soft-landed on the rolled stock without generating excessive tension in the rolled stock.
JP56012892A 1981-02-02 1981-02-02 Tension controller for rolling mill Pending JPS57127517A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56012892A JPS57127517A (en) 1981-02-02 1981-02-02 Tension controller for rolling mill

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56012892A JPS57127517A (en) 1981-02-02 1981-02-02 Tension controller for rolling mill

Publications (1)

Publication Number Publication Date
JPS57127517A true JPS57127517A (en) 1982-08-07

Family

ID=11818040

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56012892A Pending JPS57127517A (en) 1981-02-02 1981-02-02 Tension controller for rolling mill

Country Status (1)

Country Link
JP (1) JPS57127517A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0803299A1 (en) * 1996-04-23 1997-10-29 DANIELI & C. OFFICINE MECCANICHE S.p.A. Method to guide the strip between the stands in a rolling mill finishing train and relative device
KR100895605B1 (en) * 2002-06-28 2009-05-06 주식회사 포스코 Looping System for Preventing Rust
CN103370148A (en) * 2011-02-14 2013-10-23 西门子公司 Rolling mill for rolling a metal strip

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0803299A1 (en) * 1996-04-23 1997-10-29 DANIELI & C. OFFICINE MECCANICHE S.p.A. Method to guide the strip between the stands in a rolling mill finishing train and relative device
US5860311A (en) * 1996-04-23 1999-01-19 Danieli & C. Officine Meccaniche Spa Method to guide the strip between the stands in a rolling mill finishing train and relative device
KR100895605B1 (en) * 2002-06-28 2009-05-06 주식회사 포스코 Looping System for Preventing Rust
CN103370148A (en) * 2011-02-14 2013-10-23 西门子公司 Rolling mill for rolling a metal strip
CN103370148B (en) * 2011-02-14 2015-07-01 西门子公司 Rolling mill for rolling a metal strip

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