GB1271140A - A method of and an apparatus for determining an optimum schedule of operation for reversible hot rolling mills - Google Patents

A method of and an apparatus for determining an optimum schedule of operation for reversible hot rolling mills

Info

Publication number
GB1271140A
GB1271140A GB41719/69D GB4171969D GB1271140A GB 1271140 A GB1271140 A GB 1271140A GB 41719/69 D GB41719/69 D GB 41719/69D GB 4171969 D GB4171969 D GB 4171969D GB 1271140 A GB1271140 A GB 1271140A
Authority
GB
United Kingdom
Prior art keywords
rolling
passes
roll
rolled
ingot
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.)
Expired
Application number
GB41719/69D
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
Yawata Iron and Steel Co Ltd
Original Assignee
Hitachi Ltd
Yawata Iron and Steel Co 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, Yawata Iron and Steel Co Ltd filed Critical Hitachi Ltd
Publication of GB1271140A publication Critical patent/GB1271140A/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
    • 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
    • B21B37/46—Roll speed or drive motor control
    • 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
    • B21B1/02—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 heavy work, e.g. ingots, slabs, blooms, or billets, in which the cross-sectional form is unimportant ; Rolling combined with forging or pressing
    • B21B1/06—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 heavy work, e.g. ingots, slabs, blooms, or billets, in which the cross-sectional form is unimportant ; Rolling combined with forging or pressing in a non-continuous process, e.g. triplet mill, reversing mill
    • 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
    • B21B13/08—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with differently-directed roll axes, e.g. for the so-called "universal" rolling process
    • B21B13/12—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with differently-directed roll axes, e.g. for the so-called "universal" rolling process axes being arranged in different planes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2265/00—Forming parameters
    • B21B2265/22—Pass schedule

Abstract

1,271,140. Rolling. HITACHI Ltd., and YAWATA IRON & STEEL CO. Ltd. 21 Aug., 1969 [8 Feb., 1969], No. 41719/69. Heading B3M. A method of operating a rolling mill comprises predicting roll settings for a number 1-j of initial passes based on ingot size and material, due allowance being made for mill constraints, measuring, during one of these passes k(1#k#j), the resistance to deformation of the material being rolled from the actual rolling load or rolling torque, calculating the optimum number of passes required to obtain a final size and calculating the rolling torque required to give the shortest total rolling time. An apparatus comprises vertical and horizontal rolls 3 and 4 with an entry table 1 and delivery table 2, the roll torques being measured by means 20, 21 the rolling loads by means 18, 19 and the roll separations by means 16 and 17 respectively for the vertical and horizontal loads. A schedule for initial roll passes 1-j, PS<SP>1</SP> i , is prepared by a unit 100 based on standard data for the ingot to be rolled and the various mill constraints and a second schedule for the j + 1th to the final pass, PS<SP>11</SP>j, is prepared by means 200 from actual data, obtained during the kth pass, for the ingot being rolled. Preferably there are three initial passes, data being collected by means 150 on the second pass and computed by means 200 during the third.
GB41719/69D 1969-02-08 1969-08-21 A method of and an apparatus for determining an optimum schedule of operation for reversible hot rolling mills Expired GB1271140A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP44009407A JPS4918910B1 (en) 1969-02-08 1969-02-08

Publications (1)

Publication Number Publication Date
GB1271140A true GB1271140A (en) 1972-04-19

Family

ID=11719543

Family Applications (1)

Application Number Title Priority Date Filing Date
GB41719/69D Expired GB1271140A (en) 1969-02-08 1969-08-21 A method of and an apparatus for determining an optimum schedule of operation for reversible hot rolling mills

Country Status (3)

Country Link
US (1) US3688555A (en)
JP (1) JPS4918910B1 (en)
GB (1) GB1271140A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5316788B2 (en) * 1974-04-17 1978-06-03
JPS5858906A (en) * 1981-10-05 1983-04-07 Kawasaki Steel Corp Controlling method for rolling efficiency in hot rolling
US4745556A (en) * 1986-07-01 1988-05-17 T. Sendzimir, Inc. Rolling mill management system
DE19860491A1 (en) * 1998-12-28 2000-07-13 Siemens Ag Method and device for rolling metal

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3104566A (en) * 1958-10-16 1963-09-24 Square D Co Rolling mill control
US3177346A (en) * 1959-11-06 1965-04-06 United Steel Companies Ltd Apparatus for use in controlling a rolling mill
BE637693A (en) * 1962-09-21
GB1021917A (en) * 1962-09-28 1966-03-09 Hitachi Ltd Programme control device for rolling mills
US3332263A (en) * 1963-12-10 1967-07-25 Gen Electric Computer control system for metals rolling mill
US3543548A (en) * 1968-08-27 1970-12-01 Westinghouse Electric Corp Method and computer control system for operating a slabbing mill

Also Published As

Publication number Publication date
US3688555A (en) 1972-09-05
JPS4918910B1 (en) 1974-05-14

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees