GB1351125A - Method of and apparatus for controlling a moving metal sheet to conform to a predetermined plane - Google Patents

Method of and apparatus for controlling a moving metal sheet to conform to a predetermined plane

Info

Publication number
GB1351125A
GB1351125A GB1796470A GB1351125DA GB1351125A GB 1351125 A GB1351125 A GB 1351125A GB 1796470 A GB1796470 A GB 1796470A GB 1351125D A GB1351125D A GB 1351125DA GB 1351125 A GB1351125 A GB 1351125A
Authority
GB
United Kingdom
Prior art keywords
magnet
detector
strip
shaped
electro
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
GB1796470A
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.)
British Steel Corp
Original Assignee
British Steel Corp
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 British Steel Corp filed Critical British Steel Corp
Publication of GB1351125A publication Critical patent/GB1351125A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D1/00—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
    • B21B38/02—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring flatness or profile of strips
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • C21D9/54—Furnaces for treating strips or wire
    • C21D9/56—Continuous furnaces for strip or wire
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/003—Apparatus
    • C23C2/0034—Details related to elements immersed in bath
    • C23C2/00342—Moving elements, e.g. pumps or mixers
    • C23C2/00344—Means for moving substrates, e.g. immersed rollers or immersed bearings
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/14—Removing excess of molten coatings; Controlling or regulating the coating thickness
    • C23C2/16—Removing excess of molten coatings; Controlling or regulating the coating thickness using fluids under pressure, e.g. air knives
    • C23C2/18—Removing excess of molten coatings from elongated material
    • C23C2/20—Strips; Plates

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Coating With Molten Metal (AREA)

Abstract

1351125 Coating by hot dipping BRITISH STEEL CORP 19 April 1971 [15 April 1970] 17964/70 Heading C7F [Also in Division G3] Disconformities in moving metal sheet from a predetermined phase are detected and the sheet is then fluxed in dependence on the degree of disconformity, the fluxing being of such a sense and magnitude as to urge the sheet to conform to a desired plane. As applied to zinc plating apparatus in which any excess zinc on the emergent strip 1 is blown back into molten zinc bath 3 by jets 6 acting on opposite sides thereof, a proximity detector 7 and electro-magnet 8 ensure that the strip 1 is midway between the opposing jets 6 thereby preventing fouling of the jets. In Fig. 3 a plurality of detectors 7 and correcting magnets 8 are provided on opposite sides of the sheet 1. Each detector 7 comprises opposed windings 12, 13 on one limb of an H shaped core which are energized by an A. C. source 11, and a centre tapped detector coil 14. Dummy ferro-magnetic loads 16 are provided for each detector. A processing circuit 15 energizes the associated electro-magnet 8 when the strip 1 deviates from the desired plane. The processing circuit develops a D.C. signal of the sense and magnitude required to energize magnet 8 sufficiently for it to flex the strip back to the desired midway position. In Fig. 4 (not shown) the detector comprises a pair of opposed U- shaped electro-magnets on opposite sides of the strip 1. Each U-shaped magnet has a pair of energizing coils and a detector coil. Any deviation of the strip from a plane midway between the U-shaped electro-magnet provides different signals in the detector coils which are fed to a processing circuit to produce D. C. corrective signals for the magnet controlling flexing. Fig. 5 (not shown) uses opposed E-shaped cores. The D. C. corrective signals are fed to a bridge circuit or a feedback amplifier which controls the energization of the magnet 8. Instead of magnetic detectors capacitive, focused light beam, back pressure air gauges, ultra-sonic or micro-wave detectors may be used.
GB1796470A 1970-04-15 1970-04-15 Method of and apparatus for controlling a moving metal sheet to conform to a predetermined plane Expired GB1351125A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1796470 1970-04-15

Publications (1)

Publication Number Publication Date
GB1351125A true GB1351125A (en) 1974-04-24

Family

ID=10104297

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1796470A Expired GB1351125A (en) 1970-04-15 1970-04-15 Method of and apparatus for controlling a moving metal sheet to conform to a predetermined plane

Country Status (6)

Country Link
US (1) US3784072A (en)
BE (1) BE765806A (en)
CA (1) CA930792A (en)
DE (1) DE2118010A1 (en)
FR (1) FR2086097B1 (en)
GB (1) GB1351125A (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4161206A (en) * 1978-05-15 1979-07-17 Olin Corporation Electromagnetic casting apparatus and process
GB2066786B (en) * 1979-12-26 1983-08-03 Nisshin Steel Co Ltd Method and apparatus for reducing oscillation of running strip
US4364502A (en) * 1980-06-23 1982-12-21 Milliken Research Corporation Line sensor arrangement
US4489872A (en) * 1982-08-09 1984-12-25 Perfecto Industries, Inc. Apparatus for producing a loop within a metal strip
DE19535854C2 (en) * 1995-09-18 1997-12-11 Mannesmann Ag Process for strip stabilization in a plant for coating strip-like material
SE519928C2 (en) * 2000-08-11 2003-04-29 Abb Ab Apparatus and method for stabilizing an elongated metallic object
SE0002890D0 (en) * 2000-08-11 2000-08-11 Po Hang Iron & Steel A method for controlling the thickness of a galvanizing coating on a metallic object
SE0002889L (en) * 2000-08-11 2002-02-12 Abb Ab An apparatus and method for controlling the thickness of a coating on a metallic article
DE20207446U1 (en) * 2002-05-11 2003-09-25 Band Zink Gmbh coater
SE527507C2 (en) * 2004-07-13 2006-03-28 Abb Ab An apparatus and method for stabilizing a metallic article as well as a use of the apparatus
EP1871920B1 (en) * 2005-03-24 2012-05-30 Abb Research Ltd. A device and a method for stabilizing a steel sheet
EP1860206A1 (en) * 2006-05-22 2007-11-28 Abb Research Ltd. A method and device for stabilising the lateral position of an elongated metallic element
RU2436861C1 (en) * 2007-08-22 2011-12-20 Смс Зимаг Аг Procedure and device for application of protective coating by immersion into melt for stabilisation of strip with applied coating passed between blowing off nozzles of installation for application of coating by immersion into melt
WO2010034892A1 (en) * 2008-09-23 2010-04-01 Siemens Vai Metals Technologies Sas Method and device for draining liquid coating metal at the output of a tempering metal coating tank
JP5440745B1 (en) * 2012-05-10 2014-03-12 新日鐵住金株式会社 Steel plate shape control method and steel plate shape control device

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2193189A (en) * 1938-10-21 1940-03-12 Brooke Control means for rolling mills
US2731212A (en) * 1953-02-13 1956-01-17 Richard S Baker Polyphase electromagnet strip guiding and tension device
US3226702A (en) * 1960-09-28 1965-12-28 South African Iron & Steel Apparatus for determining the position of an electrically conductive wire in the plane of its catenary
US3155302A (en) * 1962-09-14 1964-11-03 Turner Brothers Asbest Methods of and apparatus for guiding fabrics
GB1160112A (en) * 1965-07-09 1969-07-30 British Aluminium Co Ltd Improvements in or relating to the Measurement of the Shape and Flatness of Sheet or Strip Material

Also Published As

Publication number Publication date
FR2086097B1 (en) 1975-06-06
DE2118010A1 (en) 1971-11-04
FR2086097A1 (en) 1971-12-31
CA930792A (en) 1973-07-24
BE765806A (en) 1971-08-30
US3784072A (en) 1974-01-08

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
435 Patent endorsed 'licences of right' on the date specified (sect. 35/1949)
PCNP Patent ceased through non-payment of renewal fee