GB1204335A - Rolling mills - Google Patents

Rolling mills

Info

Publication number
GB1204335A
GB1204335A GB52853/67A GB5285367A GB1204335A GB 1204335 A GB1204335 A GB 1204335A GB 52853/67 A GB52853/67 A GB 52853/67A GB 5285367 A GB5285367 A GB 5285367A GB 1204335 A GB1204335 A GB 1204335A
Authority
GB
United Kingdom
Prior art keywords
signals
load
variations
rolls
thickness
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
GB52853/67A
Inventor
David Robert Howard
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 GB52853/67A priority Critical patent/GB1204335A/en
Priority to SE15641/68A priority patent/SE340992B/xx
Priority to DE19681809639 priority patent/DE1809639A1/en
Priority to US777322A priority patent/US3543549A/en
Priority to NL6816584A priority patent/NL6816584A/xx
Priority to FR1592703D priority patent/FR1592703A/fr
Priority to BE724270D priority patent/BE724270A/xx
Publication of GB1204335A publication Critical patent/GB1204335A/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
    • B21B37/58—Roll-force control; Roll-gap control
    • B21B37/66—Roll eccentricity compensation systems

Abstract

1,204,335. Automatic control of rolling. DAVY & UNITED ENG. CO. Ltd. Nov.21, 1968 [Nov.21, 1967], No.52853/67. Heading G3R. [Also in Division B3] Electrical signals corresponding to the rolling load of a rolling mill and the thickness of material entering the rolls are utilized to derive a signal, predominantly responsive to thickness variations due to eccentricity and/or ovality of the rolls, which is applied to adjust the roll gap to reduce such variations. As shown, strip material from an uncoiler 11 passes between mill rolls 1, 2 to a coiler 12 and output thickness is automatically regulated by electrical signals from an output thickness gauge 18 and a load cell 7 responsive to the rolling load, which are combined in a unit 14 to control both a hydraulic unit 9 determining the load applied to the rolls and a motor 13 determining the back tension applied to the material. Signals from an input thickness gauge 19, suitably delayed at 20, correspond to input thickness variations at rolls 1, 2 and signals from the load cell 7 also correspond to these variations and to other causes such as eccentricity and/or ovality of the rolls. By comparing these signals at 21, their ratio is obtained for the component of the load signal which corresponds to input thickness variations. This latter component is then obtained by suitable multiplication at 21<SP>1</SP> and subtracted from the load variations at 23. The variations due to eccentricity and/or ovality are then selected from the remaining variations by rate follow-up servo-systems 24 adjusting potentiometers supplied with sine and cosine signals from a generator driven by a backup roll 3, so that signals of a suitable phase are applied through an amplifier 25 to control hydraulic unit 9 and thereby reduce the effects of eccentricity and/or ovality by adjustment of the rolling load. Servo-adjusted potentiometers supplied from a sine-cosine generator deiven by the other back-up roll 4 may apply further signals to amplifier 25. A similar control system may be arraged for each stand of a multi-stand rolling mill, the signals from the load cells associated with each stand being suitably delayed to provide indications of input thickness at the next stand without the need for thickness measurements between stands.
GB52853/67A 1967-11-21 1967-11-21 Rolling mills Expired GB1204335A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
GB52853/67A GB1204335A (en) 1967-11-21 1967-11-21 Rolling mills
SE15641/68A SE340992B (en) 1967-11-21 1968-11-18
DE19681809639 DE1809639A1 (en) 1967-11-21 1968-11-19 Method and device for the automatic control of a rolling mill
US777322A US3543549A (en) 1967-11-21 1968-11-20 Rolling mill control for compensating for the eccentricity of the rolls
NL6816584A NL6816584A (en) 1967-11-21 1968-11-20
FR1592703D FR1592703A (en) 1967-11-21 1968-11-21
BE724270D BE724270A (en) 1967-11-21 1968-11-21

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB52853/67A GB1204335A (en) 1967-11-21 1967-11-21 Rolling mills

Publications (1)

Publication Number Publication Date
GB1204335A true GB1204335A (en) 1970-09-03

Family

ID=10465572

Family Applications (1)

Application Number Title Priority Date Filing Date
GB52853/67A Expired GB1204335A (en) 1967-11-21 1967-11-21 Rolling mills

Country Status (7)

Country Link
US (1) US3543549A (en)
BE (1) BE724270A (en)
DE (1) DE1809639A1 (en)
FR (1) FR1592703A (en)
GB (1) GB1204335A (en)
NL (1) NL6816584A (en)
SE (1) SE340992B (en)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE757563A (en) * 1969-10-31 1971-03-16 Forges De La Loire St Chamond METHOD AND DEVICE FOR REGULATING THE THICKNESS OF ROLLED PRODUCTS
JPS4937337B1 (en) * 1970-03-20 1974-10-08
US3793860A (en) * 1972-12-04 1974-02-26 Westinghouse Electric Corp System to compensate for roll eccentricity effects and/or to simulate a mill with variable stretch characteristics
JPS5234030B2 (en) * 1973-06-27 1977-09-01
JPS541657B2 (en) * 1973-08-22 1979-01-27
JPS5345793B2 (en) * 1973-10-17 1978-12-08
US3882705A (en) * 1974-03-07 1975-05-13 Westinghouse Electric Corp Roll eccentricity correction system and method
JPS5638281B2 (en) * 1974-05-31 1981-09-05
JPS5536004B2 (en) * 1975-02-12 1980-09-18
JPS6054802B2 (en) * 1979-02-28 1985-12-02 三菱重工業株式会社 Roll eccentricity control method for rolling mill
US4580224A (en) * 1983-08-10 1986-04-01 E. W. Bliss Company, Inc. Method and system for generating an eccentricity compensation signal for gauge control of position control of a rolling mill
DE3331822A1 (en) * 1983-09-01 1985-03-21 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Method of controlling the strip thickness
AU576330B2 (en) * 1983-09-08 1988-08-25 John Lysaght (Australia) Limited Rolling mill strip thickness controller
ATE39069T1 (en) * 1984-07-05 1988-12-15 Siemens Ag METHOD OF COMPENSATING THE INFLUENCE OF ROLLER ECCENTRICITIES.
DE4411313C2 (en) * 1993-05-08 1998-01-15 Daimler Benz Ag Process for filtering out the influence of eccentricity during rolling
DE102006008574A1 (en) * 2006-02-22 2007-08-30 Siemens Ag Reducing the influence of roller excentricity on the thickness of a rolled material, comprises identifying the roller excentricity and determining a correction signal for a control unit
DE102007003243A1 (en) * 2007-01-23 2008-07-31 Siemens Ag Control arrangement for a roll stand and herewith corresponding objects
EP2684623A1 (en) * 2012-07-09 2014-01-15 Siemens Aktiengesellschaft Method for processing milled goods in a mill train
CN104815850B (en) * 2015-04-15 2016-08-31 东北大学 A kind of hydraulic pressure tension force warm-rolling machine Minimum Tension Control System and method
CN113083907B (en) * 2021-03-29 2022-07-19 广西北港不锈钢有限公司 Method for calculating eccentric rolling line of stainless steel plate

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL278112A (en) * 1961-05-08
BE636339A (en) * 1962-08-29

Also Published As

Publication number Publication date
SE340992B (en) 1971-12-13
US3543549A (en) 1970-12-01
NL6816584A (en) 1969-05-23
DE1809639A1 (en) 1969-07-17
BE724270A (en) 1969-05-02
FR1592703A (en) 1970-05-19

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee