GB1316959A - Slab rolling - Google Patents

Slab rolling

Info

Publication number
GB1316959A
GB1316959A GB4761169A GB1316959DA GB1316959A GB 1316959 A GB1316959 A GB 1316959A GB 4761169 A GB4761169 A GB 4761169A GB 1316959D A GB1316959D A GB 1316959DA GB 1316959 A GB1316959 A GB 1316959A
Authority
GB
United Kingdom
Prior art keywords
slab
rolls
rolled
roll
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.)
Expired
Application number
GB4761169A
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.)
Davy Loewy Ltd
Original Assignee
Davy Loewy 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 Davy Loewy Ltd filed Critical Davy Loewy Ltd
Publication of GB1316959A publication Critical patent/GB1316959A/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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2263/00—Shape of product
    • B21B2263/10—Lateral spread defects
    • B21B2263/12—Dog bone
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2273/00—Path parameters
    • B21B2273/12—End of product
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/16—Adjusting or positioning rolls
    • B21B31/20—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis
    • B21B31/32—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis by liquid pressure, e.g. hydromechanical adjusting

Landscapes

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

Abstract

1316959 Rolling mills DAVY & UNITED ENG CO Ltd 18 Sept 1970 [26 Sept 1969] 47611/69 Heading B3M The roll gap between a pair of vertical rolls 12, 13 is varied according to a predetermined pattern during the rolling of a slab 25 such that when the slab is subsequently rolled in a horizontal roll stand its width will be constant throughout its length. The normal taper which is produced at the leading and trailing ends of the slab during edging is eliminated by moving the rolls 12, 13 together slightly the two ends are rolled. The rolls 12, 13 are normally set by screws 16, 17 (Fig. 1) and are balanced by springs 23. Hydraulic capsules 21, 22 are connected to a control cylinder 27 to allow adjustment of the rolls whilst rolling the slab. As the leading end of the slab passes the rolls, the roll gap is slightly wider than normal but as the first few inches of the slab are rolled, the rolls are moved together to their normal position. They are moved by operation of a motor driven piston 28 which forces hydraulic fluid into the capsules 21, 22. The speed of the motor is controlled according to the slab rolling speed, and stops 34, 35 determine the stroke of the piston. The speed may be constant or may depend on the position of a transducer 37 which is related to the gap between the rolls. The motor may alternatively be controlled by a closed loop system incorporating a transducer 37 and a scanning photo-cell for locating the position of the slab. The rolls can be controlled in a similar manner as the end of the slab is rolled. One capsule instead of two may be employed. In an alternative embodiment, Fig. 2, the roll positions are controlled by valves 46, 47 which supply fluid to the roll carriers 14, 15. The valves are operated in response to output signals from amplifiers 51, 52. The output signals are derived from inputs relating to the positions of the rolls, the nominal spacing of the rolls, and the required speed of change of the roll gap. The latter signal is provided by a generator 56 providing a ramp voltage, the signal being initiated by a device 57 responsive to a closed loop system can be used, with the signal on line 60 being derived from a slab position transducer.
GB4761169A 1969-09-26 1969-09-26 Slab rolling Expired GB1316959A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4761169 1969-09-26

Publications (1)

Publication Number Publication Date
GB1316959A true GB1316959A (en) 1973-05-16

Family

ID=10445609

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4761169A Expired GB1316959A (en) 1969-09-26 1969-09-26 Slab rolling

Country Status (4)

Country Link
US (1) US3712095A (en)
DE (1) DE2047240C2 (en)
GB (1) GB1316959A (en)
ZA (1) ZA706482B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2159446A (en) * 1984-05-30 1985-12-04 Mitsubishi Heavy Ind Ltd Method of controlling an edging opening in a rolling mill

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS521382B2 (en) * 1972-10-09 1977-01-13
US4587823A (en) * 1982-12-08 1986-05-13 Blaw-Knox Corporation Apparatus and method for press-edging hot slabs
CA1243510A (en) * 1983-07-13 1988-10-25 Atsuo Mizuta Process for width reduction of plate-like stock material
DE102005025711B4 (en) 2005-06-04 2019-01-10 Sms Group Gmbh Device for adjusting the vertical rolls of a swaging stand
CN110038905A (en) * 2018-01-15 2019-07-23 宝山钢铁股份有限公司 A kind of variable step control method that roughing constant width machine is predicted based on slab head and tail width
DE112019001631T5 (en) * 2018-03-28 2021-01-28 Sintokogio, Ltd. Roll press machine, control and / or regulation system of a roll press machine, and control and / or regulating method of a roll press machine

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE898136C (en) * 1941-11-05 1953-11-26 Duerener Metallwerke Ag Device for the production of strips, sheets and rods that are narrowed in the longitudinal direction, the narrowing of which is variable
DE945838C (en) * 1942-11-24 1956-07-19 Eisen & Stahlind Ag Process for rolling profiles with or in the rolling direction. increasing strength
DE937701C (en) * 1943-08-22 1956-01-12 Wilhelm Muellenbach Rolling mill for rolling sheet metal or strips with a cross-section that changes in the rolling direction
DE939802C (en) * 1952-06-14 1956-03-01 F Sven Erichsen Adjusting device for rolling mills, calenders or the like.
US3081653A (en) * 1957-11-22 1963-03-19 Westinghouse Electric Corp Strip thickness control apparatus
US3296513A (en) * 1963-08-09 1967-01-03 Bethlehem Steel Corp Reversing motor control including load sensing to determine optimum reversal point
GB1150073A (en) * 1965-06-16 1969-04-30 British Iron Steel Research Improvements in or relating to rolling
US3422656A (en) * 1966-03-18 1969-01-21 United States Steel Corp Method of rolling slabs in planetary mill
US3436943A (en) * 1966-05-20 1969-04-08 Gen Dynamics Corp Rolling mill taper control system
DE1602059A1 (en) * 1967-08-29 1970-05-06 Demag Ag Deformation framework for a continuous metal caster, especially for steel
US3543548A (en) * 1968-08-27 1970-12-01 Westinghouse Electric Corp Method and computer control system for operating a slabbing mill

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2159446A (en) * 1984-05-30 1985-12-04 Mitsubishi Heavy Ind Ltd Method of controlling an edging opening in a rolling mill

Also Published As

Publication number Publication date
ZA706482B (en) 1971-06-30
US3712095A (en) 1973-01-23
DE2047240A1 (en) 1971-05-27
DE2047240C2 (en) 1983-11-17

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PE20 Patent expired after termination of 20 years