JPS56158206A - Continuous rolling method for strip - Google Patents

Continuous rolling method for strip

Info

Publication number
JPS56158206A
JPS56158206A JP6167480A JP6167480A JPS56158206A JP S56158206 A JPS56158206 A JP S56158206A JP 6167480 A JP6167480 A JP 6167480A JP 6167480 A JP6167480 A JP 6167480A JP S56158206 A JPS56158206 A JP S56158206A
Authority
JP
Japan
Prior art keywords
thickness
mill
stiffness
blank
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.)
Pending
Application number
JP6167480A
Other languages
Japanese (ja)
Inventor
Tadaatsu Inoue
Ritsushi Miyazaki
Akira Ishihara
Original Assignee
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 Nippon Steel Corp filed Critical Nippon Steel Corp
Priority to JP6167480A priority Critical patent/JPS56158206A/en
Publication of JPS56158206A publication Critical patent/JPS56158206A/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
    • B21B37/58Roll-force control; Roll-gap control
    • B21B37/64Mill spring or roll spring compensation systems, e.g. control of prestressed mill stands
    • 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
    • B21B37/16Control of thickness, width, diameter or other transverse dimensions
    • B21B37/24Automatic variation of thickness according to a predetermined programme
    • B21B37/26Automatic variation of thickness according to a predetermined programme for obtaining one strip having successive lengths of different constant thickness

Abstract

PURPOSE: To avoid a sudden change of a rolling load, tension, etc., against a sudden change of a feed-in side thickness, and to smooth a prescribed change of the run-out side thickness, by altering the mill-stiffness of a rolling stand correspondingly to the thicknesses before and after changing the thickness.
CONSTITUTION: A mill-stiffness controller 66 controls the alternation of the mill- stiffness using a tension bar 64 and a hydraulic screw down device 65. A thickness gauge 67 detects the thickness before and after a weld point 62 of a blank material having nonuniform thickness; from these detected thicknesses and a draft percentage commanded by a draft percentage setter 68, an arithmetic device 69 operates a mill- stiffness to be set, and inputs this value to the mill-stiffness controller 66. When the weld point 62 of a blank material having nonuniform thickness arrives at a rollig stand 63, the rolling stand 63 smoothly continues the rolling work for the following blank material 61 by the function of the preset mill-striffness. By the present method, the change of the rollig load and tension is diminished.
COPYRIGHT: (C)1981,JPO&Japio
JP6167480A 1980-05-12 1980-05-12 Continuous rolling method for strip Pending JPS56158206A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6167480A JPS56158206A (en) 1980-05-12 1980-05-12 Continuous rolling method for strip

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6167480A JPS56158206A (en) 1980-05-12 1980-05-12 Continuous rolling method for strip

Publications (1)

Publication Number Publication Date
JPS56158206A true JPS56158206A (en) 1981-12-05

Family

ID=13178022

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6167480A Pending JPS56158206A (en) 1980-05-12 1980-05-12 Continuous rolling method for strip

Country Status (1)

Country Link
JP (1) JPS56158206A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4887343A (en) * 1987-05-29 1989-12-19 Fuji Photo Film Co., Ltd. Method and apparatus for roller leveler
EP1327487A1 (en) * 2000-10-04 2003-07-16 Kawasaki Steel Corporation Endless hot rolling method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4887343A (en) * 1987-05-29 1989-12-19 Fuji Photo Film Co., Ltd. Method and apparatus for roller leveler
EP1327487A1 (en) * 2000-10-04 2003-07-16 Kawasaki Steel Corporation Endless hot rolling method
EP1327487A4 (en) * 2000-10-04 2004-03-17 Jfe Steel Corp Endless hot rolling method

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