EP0543685B1 - Procédé et dispositif de décapage des rives d'une tÔle laminee à chaud - Google Patents

Procédé et dispositif de décapage des rives d'une tÔle laminee à chaud Download PDF

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Publication number
EP0543685B1
EP0543685B1 EP92402641A EP92402641A EP0543685B1 EP 0543685 B1 EP0543685 B1 EP 0543685B1 EP 92402641 A EP92402641 A EP 92402641A EP 92402641 A EP92402641 A EP 92402641A EP 0543685 B1 EP0543685 B1 EP 0543685B1
Authority
EP
European Patent Office
Prior art keywords
edge
emitting
sheet
ultrasonics
mouths
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.)
Revoked
Application number
EP92402641A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0543685A1 (fr
Inventor
Michel Nogues
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.)
Sollac SA
Original Assignee
Sollac SA
Lorraine de Laminage Continu SA SOLLAC
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=9417666&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0543685(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Sollac SA, Lorraine de Laminage Continu SA SOLLAC filed Critical Sollac SA
Publication of EP0543685A1 publication Critical patent/EP0543685A1/fr
Application granted granted Critical
Publication of EP0543685B1 publication Critical patent/EP0543685B1/fr
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K13/00—Cones, diaphragms, or the like, for emitting or receiving sound in general
    • 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
    • C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
    • C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
    • C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/04—Cleaning involving contact with liquid
    • B08B3/10—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
    • B08B3/12—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration by sonic or ultrasonic vibrations
    • 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
    • C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
    • C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
    • C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
    • C23G1/08—Iron or steel
    • 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
    • C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
    • C23G3/00—Apparatus for cleaning or pickling metallic material
    • C23G3/02—Apparatus for cleaning or pickling metallic material for cleaning wires, strips, filaments continuously

Definitions

  • the present invention relates to the pickling of the edges of a sheet immersed in a reactive solution, in particular the pickling of hot-rolled steel sheets in metallurgical installations, prior to their cold rolling.
  • hot-rolled steel strips are covered with a layer of oxides, calamine, a hard, brittle and abrasive material which must be removed before cold rolling. Indeed, lengthening less than steel, the scale would become embedded in the metal, and would very significantly reduce its ability to stamp. Abrasive, it would quickly deteriorate the condition of the surfaces of the cylinders, the appearance of the sheets would be poor, without gloss, unsuitable for polishing and various subsequent coatings.
  • Calamine a mixture of the three oxides FeO, Fe3O4 and Fe2O3, and also chromium oxides in the case of stainless steels, is conventionally pickled by immersion of the steel strips in tanks containing a reactive solution of hot acid, such than sulfuric acid, hydrochloric acid, etc. Several trays are thus generally used to achieve sufficient stripping levels, the product to be stripped staying there for one to several minutes.
  • the stripping of the edges of the product raises a particular problem, because the cooling of the edges is faster than that of the central zone.
  • the oxides formed on the banks are different from those in the central zone, which reduces the pickling speed on the banks relative to the center of the product, at least on certain pickling lines.
  • the invention therefore aims to improve the speed of pickling on the edges of the product.
  • ultrasonic emitting means are used in the reactive solution inside which the sheet to be scoured is immersed, these emitting means comprising an emitting surface.
  • ultrasound is emitted in at least one plane parallel to the edge to be etched and with sufficient power to create cavitation in the volume of the intermediate liquid between the edge and said plane.
  • the ultrasound is emitted in two antinodal planes parallel to the shore and situated on either side of the latter.
  • An antinodal plane being a plane in which the vibration imparted to the liquid has its maximum amplitude, this means that the plane of one of the ultrasonic emitting surfaces must be located at a distance from the plane of the other emitting emitting surface. at 1/2 wavelength or a multiple of this value. It can be seen that under these conditions, if this vibrational amplitude is sufficiently high, a cavitation is created in the liquid between the roof and the surface of the shore.
  • the device for implementing this method comprises at least one transmitting flag having a planar emission surface, intended to be disposed above an edge of the sheet, parallel to the latter.
  • the device comprises two transmitting flags placed on either side of a bank of the sheet with their emitting surfaces located in two antinodal planes.
  • the amplitude of the vibrations that is to say if the emitting power of the horns is sufficient, and if the frequency range is suitably chosen, it is possible to create in the liquid a cavitation between the two pavilions, which considerably accelerates the stripping of the banks.
  • Figure 1 is a simplified elevational view of an embodiment of the stripping device of the edges of a sheet according to the invention.
  • FIG. 2 is a sketch showing the variation in the amplitude of the vibration imparted to the transmitting pavilions and transmitted to the liquid, and in particular the antinodal planes in which the pavilions are placed.
  • Figure 3 is a sectional view of a particular configuration of a pavilion of the device according to the invention.
  • a tank 1 containing a reactive solution 2 such as hydrochloric acid in which is immersed a sheet metal 3 in movement, in a manner known per se, in order to be stripped of its calamine layer.
  • the device for pickling the surfaces 3a, 3b of an edge of the sheet 3 comprises an ultrasonic emitter such as a piezoelectric emitter 4, the lower end of which, immersed in the solution 2, is a sonotrode 5 on which are fixed two pavilions 6, 7, on either side of the bank of the sheet 3 and parallel to it.
  • the two pavilions 6, 7 are therefore immersed in solution 2, the upper pavilion 6 being arranged above the surface 3a of the shore and the lower pavilion 7 being placed below the lower surface 3b of the shore, so that it is partially covered by the flat surfaces of the pavilions 6, 7.
  • the two flat emitting surfaces of the pavilions 6, 7 vibrate in phase opposition, and if the maximum amplitude A of the vibrations is sufficiently large, a cavitation is obtained in the part of the liquid 2 between the two pavilions 6, 7 and opposite the surfaces 3a, 3b of the bank. The pickling of the latter is then considerably accelerated.
  • the horn and pavilions 6, 7 can be made for example of titanium, so as to be insensitive to corrosion by solution 2.
  • the ultrasound emitted must have a frequency of between 10 and 50 kHertz approximately, and that their emitting power must be at least 400 Watts per m2 of pavilion.
  • the distance d can for example be 15 cm for a frequency close to 20 kHz.
  • the pavilion (s) 6, 7 are discs having a circular outline. This contour has the advantage of homogenizing the reflections of the waves on the edges of the pavilion and therefore of facilitating the resonance of the disc constituting the pavilion, which in turn can cause cavitation in the liquid 2.
  • the pavilions 6, 7 can optionally also be produced in the form of circular half-discs.
  • a pickling device as described above is provided for each of the two edges of a sheet.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Metallurgy (AREA)
  • General Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
EP92402641A 1991-10-07 1992-09-25 Procédé et dispositif de décapage des rives d'une tÔle laminee à chaud Revoked EP0543685B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9112324 1991-10-07
FR9112324A FR2682126B1 (fr) 1991-10-07 1991-10-07 Procede et dispositif de decapage des rives d'une tole immergee dans une solution reactive, notamment de toles laminees a chaud.

Publications (2)

Publication Number Publication Date
EP0543685A1 EP0543685A1 (fr) 1993-05-26
EP0543685B1 true EP0543685B1 (fr) 1996-05-22

Family

ID=9417666

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92402641A Revoked EP0543685B1 (fr) 1991-10-07 1992-09-25 Procédé et dispositif de décapage des rives d'une tÔle laminee à chaud

Country Status (11)

Country Link
US (1) US5441062A (ko)
EP (1) EP0543685B1 (ko)
JP (1) JPH05239674A (ko)
KR (1) KR100250402B1 (ko)
AT (1) ATE138424T1 (ko)
AU (1) AU653433B2 (ko)
CA (1) CA2080070C (ko)
DE (1) DE69210960T2 (ko)
ES (1) ES2087483T3 (ko)
FR (1) FR2682126B1 (ko)
ZA (1) ZA927675B (ko)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2116930B1 (es) * 1996-10-04 1999-04-01 Consejo Superior Investigacion Procedimiento y dispositivo para lavado ultrasonico de textiles en continuo.
JP3945556B2 (ja) * 1998-12-17 2007-07-18 東京応化工業株式会社 液晶素子製造用ポジ型ホトレジスト塗布液及びそれを用いた基材
DE19921145B4 (de) * 1999-05-07 2008-01-10 Kobra Formen Gmbh Rüttelantrieb für eine Form
US6689222B2 (en) 1999-11-03 2004-02-10 Applied Materials, Inc. Sealable surface method and device
US6481449B1 (en) * 1999-11-03 2002-11-19 Applied Materials, Inc. Ultrasonic metal finishing
KR101115713B1 (ko) * 2004-10-30 2012-03-06 주식회사 포스코 페라이트계 스테인리스강의 무소둔용 산세방법
KR100800174B1 (ko) * 2006-10-20 2008-02-01 한국기계연구원 메가소닉 세정모듈
DE102015106343A1 (de) * 2015-04-24 2016-10-27 Weber Ultrasonics Gmbh Vorrichtung und Verfahren zum Entgraten von Bauteilen mittels Ultraschall
CN112570371B (zh) * 2020-11-24 2022-04-29 爱阔特(上海)清洗设备制造有限公司 一种具有上下料功能的超声波清洗装置

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2784119A (en) * 1953-09-17 1957-03-05 Libbey Owens Ford Glass Co Ultrasonic cleaning of curved surfaces, and apparatus therefor
NL241181A (ko) * 1958-07-12
US3072808A (en) * 1959-08-04 1963-01-08 California Inst Res Found Transducer plate for high acoustical-mechanical energy transfer to liquids
US3173034A (en) * 1960-09-16 1965-03-09 Singer Inc H R B Ultrasonic device
US3702795A (en) * 1968-02-21 1972-11-14 Grace W R & Co Apparatus for ultrasonic etching of polymeric printing plates
US3575383A (en) * 1969-01-13 1971-04-20 John A Coleman Ultrasonic cleaning system, apparatus and method therefor
CH520750A (de) * 1970-02-02 1972-03-31 Sandoz Ag Verfahren zur Herstellung von Azoverbindungen
CH531910A (fr) * 1970-07-08 1972-12-31 Battelle Memorial Institute Procédé de décapage de tôle oxydée et installation pour la mise en oeuvre de ce procédé
DE2103261A1 (en) * 1971-01-25 1972-08-10 Kabel Metallwerke Ghh Etching or pickling metals or synthetic resins - using ultrasonic vibrations
US3891869A (en) * 1973-09-04 1975-06-24 Scarpa Lab Inc Piezoelectrically driven ultrasonic generator
US4401131A (en) * 1981-05-15 1983-08-30 Gca Corporation Apparatus for cleaning semiconductor wafers
JPS59110389A (ja) * 1982-12-16 1984-06-26 Canon Inc 振動波モ−タ
JPS6013481A (ja) * 1983-07-04 1985-01-23 Canon Inc 振動波モ−タ
US4555302A (en) * 1984-08-24 1985-11-26 Urbanik John C Method and apparatus for ultrasonic etching of printing plates
ES2017285A6 (es) * 1989-10-06 1991-01-16 Consejo Superior Investigacion Equipo electroacustico para la generacion de altas intensidades sonicas y ultrasonicas en gases e interfases.

Also Published As

Publication number Publication date
CA2080070C (fr) 2002-05-07
CA2080070A1 (fr) 1993-04-08
KR930008192A (ko) 1993-05-21
US5441062A (en) 1995-08-15
DE69210960D1 (de) 1996-06-27
ATE138424T1 (de) 1996-06-15
ES2087483T3 (es) 1996-07-16
AU653433B2 (en) 1994-09-29
FR2682126B1 (fr) 1994-12-23
KR100250402B1 (ko) 2000-04-01
JPH05239674A (ja) 1993-09-17
ZA927675B (en) 1994-04-07
DE69210960T2 (de) 1996-11-21
AU2603292A (en) 1993-04-08
EP0543685A1 (fr) 1993-05-26
FR2682126A1 (fr) 1993-04-09

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