GB1127926A - Rolling mills - Google Patents

Rolling mills

Info

Publication number
GB1127926A
GB1127926A GB52116/64A GB5211664A GB1127926A GB 1127926 A GB1127926 A GB 1127926A GB 52116/64 A GB52116/64 A GB 52116/64A GB 5211664 A GB5211664 A GB 5211664A GB 1127926 A GB1127926 A GB 1127926A
Authority
GB
United Kingdom
Prior art keywords
signal
force
rolling
mill
enlargement
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
GB52116/64A
Inventor
Anne Kiggell
Dennis Stubbs
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
Priority to GB52116/64A priority Critical patent/GB1127926A/en
Priority to DE19651427872 priority patent/DE1427872A1/en
Priority to US515128A priority patent/US3537285A/en
Priority to BE674206A priority patent/BE674206A/xx
Priority to FR43329A priority patent/FR1461159A/en
Priority to NL6516760A priority patent/NL6516760A/xx
Publication of GB1127926A publication Critical patent/GB1127926A/en
Priority to SE16513/65A priority patent/SE305428B/xx
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
    • 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
    • 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
    • B21B37/64—Mill spring or roll spring compensation systems, e.g. control of prestressed mill stands

Abstract

1,127,926. Automatic control of rolling. DAVY & UNITED ENG. CO. Ltd. Dec. 15, 1965 [Dec. 22, 1964], No. 52116/64. Heading G3R. [Also in Division B3] In a rolling mill, parts of the mill other than the rolls are pre-stressed to an extent that is automatically controlled by a signal derived from independent measurements of the pre-stressing load and the total of the pre-stressing load and the rolling load, so that the roll gap is maintained constant. In Fig. 1, mill rolls 20 are journalled in chocks 17, 18 located in recesses in further chocks 14, 15 carrying back-up rolls 16. Chocks 14, 15 are located in end housings 12 and the roll gap is adjustable by screws 22. The mill stand is pre-stressed by hydraulic actuators 25 which force chocks 14,15 apart and are under the control of a valve 27. When material is being rolled, an electrical signal dependent on the total force is derived from load cells 23 associated with screws 22 and another signal dependent on the pre-stressing force is derived from a pressure transducer 29 associated with the hydraulic supply to actuators 25. The difference between these two signals, which represents the rolling force, is obtained by a circuit 31. A proportion of this rolling force signal is selected by a potentiometer 32 and added to the total force signal by a circuit 30 to produce a signal representative of the enlargement of the roll gap caused by the forces involved. This calculated gap enlargement signal is compared with a desired enlargement signal obtained by subtracting, in a circuit 41, a signal from a transducer 40, representing screw-down setting, from an adjustable reference signal produced by a unit 35. Any difference resulting from the comparison produces an output from a circuit 33 which is applied to control valve 27 so that gap enlargement is restored to the desired value. Signals from a gauge 38 detecting errors in thickness of the rolled material are integrated at 37 and modify the output of unit 35 to correct long term changes in thickness. Camber of the rolls may be automatically controlled by the signal representing rolling force to maintain a desired shape of cross-section. Alternative arrangements for pre-stressing the mill and for calculating the gap enlargement are referred to.
GB52116/64A 1964-12-22 1964-12-22 Rolling mills Expired GB1127926A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
GB52116/64A GB1127926A (en) 1964-12-22 1964-12-22 Rolling mills
DE19651427872 DE1427872A1 (en) 1964-12-22 1965-12-20 Method and device for automatic regulation
US515128A US3537285A (en) 1964-12-22 1965-12-20 Prestressed rolling mill and control
BE674206A BE674206A (en) 1964-12-22 1965-12-22
FR43329A FR1461159A (en) 1964-12-22 1965-12-22 Control systems used to keep the size of a rolled product constant
NL6516760A NL6516760A (en) 1964-12-22 1965-12-22
SE16513/65A SE305428B (en) 1964-12-22 2016-10-18

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB52116/64A GB1127926A (en) 1964-12-22 1964-12-22 Rolling mills
BE674206A BE674206A (en) 1964-12-22 1965-12-22

Publications (1)

Publication Number Publication Date
GB1127926A true GB1127926A (en) 1968-09-18

Family

ID=10462702

Family Applications (1)

Application Number Title Priority Date Filing Date
GB52116/64A Expired GB1127926A (en) 1964-12-22 1964-12-22 Rolling mills

Country Status (7)

Country Link
US (1) US3537285A (en)
BE (1) BE674206A (en)
DE (1) DE1427872A1 (en)
FR (1) FR1461159A (en)
GB (1) GB1127926A (en)
NL (1) NL6516760A (en)
SE (1) SE305428B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2153277A (en) * 1982-02-11 1985-08-21 Marotta Scientific Controls Load-transfer mechanism

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE789573A (en) * 1971-10-07 1973-03-29 Wean United Inc ROLLER CONTROL
US4415976A (en) * 1981-04-28 1983-11-15 Westinghouse Electric Corp. Method and apparatus for automatic mill zero correction for strip width
US4979556A (en) * 1989-04-04 1990-12-25 Hunter Engineering Company, Inc. Thickness control for a continuous caster
CN109226276A (en) * 2018-11-13 2019-01-18 中国重型机械研究院股份公司 A kind of roll squeezer control method
CN111842504B (en) * 2020-07-15 2022-06-07 上海宝立自动化工程有限公司 Novel cold continuous rolling mill hot strip soft start thickness control method and system

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2903926A (en) * 1956-01-11 1959-09-15 Baldwin Lima Hamilton Corp Method and apparatus for controlling the contour of rolls in a rolling mill
FR85591E (en) * 1963-04-10 1965-12-10
US3159063A (en) * 1961-09-29 1964-12-01 Thomas A Fox Rolling mill structures
BE628319A (en) * 1962-02-15 1963-05-29 Rolling stand with closed uprights and regulating device for rolling with tolerance
US3247697A (en) * 1962-12-06 1966-04-26 Blaw Knox Co Strip rolling mill
DE1294317B (en) * 1962-12-24 1969-05-08 Siemag Siegener Masch Bau Rolling frame for belts, straights or the like with tight thickness tolerances

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2153277A (en) * 1982-02-11 1985-08-21 Marotta Scientific Controls Load-transfer mechanism

Also Published As

Publication number Publication date
FR1461159A (en) 1966-12-02
BE674206A (en) 1966-04-15
NL6516760A (en) 1966-06-23
US3537285A (en) 1970-11-03
DE1427872A1 (en) 1968-10-31
SE305428B (en) 1968-10-28

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