JPS5668517A - Preset screw-down method of reverse mill - Google Patents

Preset screw-down method of reverse mill

Info

Publication number
JPS5668517A
JPS5668517A JP14632879A JP14632879A JPS5668517A JP S5668517 A JPS5668517 A JP S5668517A JP 14632879 A JP14632879 A JP 14632879A JP 14632879 A JP14632879 A JP 14632879A JP S5668517 A JPS5668517 A JP S5668517A
Authority
JP
Japan
Prior art keywords
screw
differential pressure
inlet side
relation
circuit
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
JP14632879A
Other languages
Japanese (ja)
Inventor
Minoru Wakita
Hitoshi Aizawa
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 JP14632879A priority Critical patent/JPS5668517A/en
Publication of JPS5668517A publication Critical patent/JPS5668517A/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
    • B21B37/58—Roll-force control; Roll-gap control
    • B21B37/62—Roll-force control; Roll-gap control by control of a hydraulic adjusting device
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
    • B21B1/30—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a non-continuous process
    • B21B1/32—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a non-continuous process in reversing single stand mills, e.g. with intermediate storage reels for accumulating work

Landscapes

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

Abstract

PURPOSE:To automate presetting and improve on-gage rate and yield by obtaining the relation between the inlet side thickness and differential pressure of the hydraulic fluid of screw-down cylinders with respect to a constant draft by learning mode and feeding back said differential pressure by this relation. CONSTITUTION:In preset-screw down of reverse mills, the leading end of a rolled material 13 is wound on a reel 3 by way of between work rolls 2, 2', and the inlet side thickness of a mill inlet side thickness detector 4 and a target thickness are inputted to a thickness indicating circuit 6. The signal thereof and rolling codes 15 such as the width and kind of the rolled material 13 are inputted to an arithmetic control circuit 10. In the circuit 10, the relation of the inlet side thickness (x) and the differential pressure (y) of the hydraulic fluid of a hydraulic screw-down cylinder 7 with respect to a constant draft is operated by the formula. If the preset screw- down operation is turned on, the differential pressure is applied to the cylinder 7 by way of the signal 16 and servo-valve 11, and is fed back to the circuit 10, whereby the automatic controlling is accomplished. With this method, the yield may be made higher than that of conventional manual methods.
JP14632879A 1979-11-12 1979-11-12 Preset screw-down method of reverse mill Pending JPS5668517A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14632879A JPS5668517A (en) 1979-11-12 1979-11-12 Preset screw-down method of reverse mill

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14632879A JPS5668517A (en) 1979-11-12 1979-11-12 Preset screw-down method of reverse mill

Publications (1)

Publication Number Publication Date
JPS5668517A true JPS5668517A (en) 1981-06-09

Family

ID=15405186

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14632879A Pending JPS5668517A (en) 1979-11-12 1979-11-12 Preset screw-down method of reverse mill

Country Status (1)

Country Link
JP (1) JPS5668517A (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4967858A (en) * 1972-11-02 1974-07-01
JPS5250956A (en) * 1975-10-21 1977-04-23 Kobe Steel Ltd Mill setting method for roll mill
JPS533950A (en) * 1976-07-02 1978-01-14 Hitachi Ltd Rolling mill controlling process

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4967858A (en) * 1972-11-02 1974-07-01
JPS5250956A (en) * 1975-10-21 1977-04-23 Kobe Steel Ltd Mill setting method for roll mill
JPS533950A (en) * 1976-07-02 1978-01-14 Hitachi Ltd Rolling mill controlling process

Similar Documents

Publication Publication Date Title
ES8100103A1 (en) Roller mill and method of operation.
JPS5668517A (en) Preset screw-down method of reverse mill
GB1022121A (en) Rolling mill for flat strip
JPS54149357A (en) Control unit for breadth of rolled sheet
JPS623818A (en) Rolling control method
JPS5785607A (en) Controlling method of plate bending in tandem mill
JPS55128311A (en) Shape control method in sextuple rolling mills
JPS5636307A (en) Controlling method for camber of hot strip
JPS57181702A (en) Continuous cold rolling method that entails roll changing
JPS5750207A (en) Controlling method for timing control in controlling roll bending
JPS57156827A (en) Automatic differential pressure setter
FR2443885A1 (en) Strip mill automatic thickness control appts. - uses electronic logic circuit and hydraulic circuit to adjust roll gap
JPS5668519A (en) Width control device of rolling mill
JPS5443857A (en) Rolling method for steel strip
JPS55165209A (en) Controlling method for tension
JPS5545532A (en) Roll screw-down position setting method of six-high rolling mill
JPS54117357A (en) Metod and apparatus for controlling sheet crown and shape in continuous rolling mill
JPS5684111A (en) Automatic breadth controlling method for slab
JPS5614020A (en) Gauge controller for pipe mill
JPS57181715A (en) Edge screw down device of rolling mill
GB1381664A (en) Method and apparatus for operating a rollstand or a roll train formed by rollstands
Teshiba Improvement in Gage Accuracy With Revamping of Six-Stand Tandem Cold Strip Mill
JPS56111521A (en) Controlling method for rolling work changeable thickness of strip while operation continues
JPS6411010A (en) Shape control method for rolled stock in continuous rough rolling
GB995208A (en) Strip rolling mill