JPS5684111A - Automatic breadth controlling method for slab - Google Patents

Automatic breadth controlling method for slab

Info

Publication number
JPS5684111A
JPS5684111A JP16146979A JP16146979A JPS5684111A JP S5684111 A JPS5684111 A JP S5684111A JP 16146979 A JP16146979 A JP 16146979A JP 16146979 A JP16146979 A JP 16146979A JP S5684111 A JPS5684111 A JP S5684111A
Authority
JP
Japan
Prior art keywords
slab
breadth
rolling
constant
variation
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
JP16146979A
Other languages
Japanese (ja)
Other versions
JPS6038206B2 (en
Inventor
Tomoaki Kimura
Toshiyuki Kajiwara
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 JP54161469A priority Critical patent/JPS6038206B2/en
Publication of JPS5684111A publication Critical patent/JPS5684111A/en
Publication of JPS6038206B2 publication Critical patent/JPS6038206B2/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
    • B21B37/16—Control of thickness, width, diameter or other transverse dimensions
    • B21B37/22—Lateral spread control; Width control, e.g. by edge rolling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
    • B21B13/06—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with axes of rolls arranged vertically, e.g. edgers

Landscapes

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

Abstract

PURPOSE:To improve the accuracy of breadth of the steel slab, in the hot strip rolling line including the edging work for the steel slab, by feedback-controlling the error in the size of breadth of slab, to be caused by the deformation characteristic of the slab itself, depending on the variation of the rolling load corresponding to the spring-back constant of the slab. CONSTITUTION:For manufacturing the hot strip by hot rolling the slab, the slab is first processed by the edging pass; hereupon, if the spring constant of the rolling mill is taken as Ke, the spring-back constant of the slab itselt is taken as Kb, similarly taking the rolling load as P, the variation of rolling load as DELTAP, the roll gap of rolling rolls as S, the variation of the roll gap as DELTAS, and a constant as alpha, the error in the breadth of the slab is feedback-controlled so as to satisfy a relation, alpha.DELTAP (1/Ke+1/Kb)+DELTAS=0; hereby, the rolling reduction for the breadth of slab is properly controlled, and the fluctuation of accuracy in breadth of the slab is minimized.
JP54161469A 1979-12-14 1979-12-14 Automatic slab width control method Expired JPS6038206B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54161469A JPS6038206B2 (en) 1979-12-14 1979-12-14 Automatic slab width control method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54161469A JPS6038206B2 (en) 1979-12-14 1979-12-14 Automatic slab width control method

Publications (2)

Publication Number Publication Date
JPS5684111A true JPS5684111A (en) 1981-07-09
JPS6038206B2 JPS6038206B2 (en) 1985-08-30

Family

ID=15735682

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54161469A Expired JPS6038206B2 (en) 1979-12-14 1979-12-14 Automatic slab width control method

Country Status (1)

Country Link
JP (1) JPS6038206B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5832044A (en) * 1981-08-14 1983-02-24 Sekisui Chem Co Ltd Laminated body used as an intermediate layer for laminated glass

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5832044A (en) * 1981-08-14 1983-02-24 Sekisui Chem Co Ltd Laminated body used as an intermediate layer for laminated glass
JPH0231017B2 (en) * 1981-08-14 1990-07-11 Sekisui Chemical Co Ltd

Also Published As

Publication number Publication date
JPS6038206B2 (en) 1985-08-30

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