EP0795629B1 - Vorrichtung zum Oberflächenbehandeln von Bändern mit Flüssigkeiten - Google Patents

Vorrichtung zum Oberflächenbehandeln von Bändern mit Flüssigkeiten Download PDF

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Publication number
EP0795629B1
EP0795629B1 EP97101302A EP97101302A EP0795629B1 EP 0795629 B1 EP0795629 B1 EP 0795629B1 EP 97101302 A EP97101302 A EP 97101302A EP 97101302 A EP97101302 A EP 97101302A EP 0795629 B1 EP0795629 B1 EP 0795629B1
Authority
EP
European Patent Office
Prior art keywords
panel
tank
pickling
pickle
strip
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 - Lifetime
Application number
EP97101302A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0795629A1 (de
Inventor
Peter Dr. Ing. Gravert
Günther Dipl. Ing. Hiden
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.)
Andritz AG
Original Assignee
Andritz AG
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 Andritz AG filed Critical Andritz AG
Publication of EP0795629A1 publication Critical patent/EP0795629A1/de
Application granted granted Critical
Publication of EP0795629B1 publication Critical patent/EP0795629B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • C23G3/023—Apparatus for cleaning or pickling metallic material for cleaning wires, strips, filaments continuously by spraying
    • 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
    • C23G3/021—Apparatus for cleaning or pickling metallic material for cleaning wires, strips, filaments continuously by dipping

Definitions

  • the invention relates to a device for pickling metal strips in one trough-shaped containers, one above the belt in the pickling medium, immersed plate is arranged and the free surface of the pickling medium extends over the entire surface of the container.
  • the mean bath depth can, however, be with a free surface of the treatment bath only to a lower one, determined by the maximum belt speed Limit to be lowered. Due to the drag effect of the moving Band is the treatment medium in the treatment bath in the direction of Band movement carried away. An inclined liquid level is created with correspondingly excessive bath depth at the exit of the strip from the treatment bath and correspondingly lowered bath depth at the entrance of the band in the treatment bath. At higher speeds (e.g. at 200 mm average bath depth and 20 m bath length above approx. 200 m / min belt speed) an empty pump occurs in the area of the entry of the belt into the Treatment bath so that the immersion length of the tape in the treatment medium shortened accordingly and thus the length of the treatment bath is no longer fully used. The middle bathroom mirror must therefore be avoided pumping can be raised. The performance limit of a Treatment bath with a free surface is therefore by the optimum between shortening of the pickling bath due to drag effect and reduced pickling effect given by greater mean bath depth.
  • a known measure for achieving a low average bath depth high speeds is the formation of a closed treatment channel.
  • the bath depth is therefore at the level of the treatment channel fixed.
  • the Leaving the band from the treatment channel using methods such as in EP 0 655 519 A1 against the dynamic pressure of the drag effect be hydrodynamically sealed.
  • the hydrodynamic seal requires a considerable amount of energy compared to treatment baths must also be applied with a free surface.
  • the required supply of fresh treatment medium at the strip outlet is difficult and associated with high energy consumption.
  • DE 41 08 516 describes e.g. a high speed pickling process and a corresponding device.
  • a channel is provided, i.e. the band is enclosed on all sides.
  • FR 2 721 also describes 235 a pickling plant, in which the strip is deflected by deflecting the strip several layers are passed through the pickling bath, one at a time a plate is arranged above a band length and these plates with the Sidewalls form channels through which the tape is guided.
  • the pickling acid is injected into the channels at both ends of the separating plates.
  • the purpose of the present invention is to limit the performance of a treatment bath improve with free surface, so the disadvantages of a closed treatment channel can be avoided.
  • the invention is characterized in that the plate only above the Ribbon arranged and aligned approximately parallel to the ribbon, from a Side wall of the container to the other side wall of the container and the pickling bath in a treatment area below the plate, which is completed by the bottom of the container is, and a reflux area for the pickling medium, above the Plate, with free surface of the pickling medium, divides.
  • This causes in Treatment tank an improved backflow of the accumulated pickling medium from the area of the tape outlet to the tape inlet, so that the The accumulation level in the area of the belt outlet is reduced and therefore the average Bath depth can be reduced.
  • Another advantage of the proposed facility is that with the plate according to the invention a treatment channel shallow bath depth is formed, while the free surface of the Treatment medium is retained and the drag effect of the tape for targeted circulation and mixing of the pickling medium in the pickling tank is being used.
  • An advantageous development of the invention is characterized in that the plate consists of several individual plates arranged one after the other. This is particularly advantageous for longer pickling tanks.
  • a further development of the invention is characterized in that between the plates passage gaps are left through which the pickling medium from lower treatment area to the upper reflux area and vice versa can flow.
  • the pickling medium is circulated in Parts of the pickling tank are reached, and on the other hand the pickling medium flows better when emptying the pickling tank.
  • the plate contains openings through which the pickling medium between the lower treatment area and the upper reflux area can circulate.
  • a particularly favorable effect is achieved when the plate is almost flat extends over the entire length of the pickling tank, and only at the beginning and End of the container passages between the plate and the container wall or are present in the plate through which the pickling medium from the bottom Flow the treatment area into the upper reflux area and vice versa can. So the pickling medium is completely from the area of the belt outlet headed to the area of the belt inlet.
  • a particularly favorable effect is achieved if the plate has a cross-section V-shaped, which makes flat contact with flat bands can be avoided and the drainage of the pickling medium when emptying is improved.
  • a particularly favorable effect is achieved if the plate on the Band facing side is provided with cross ribs, which on the one hand Decelerate the flow by dragging and increase it on the other Cause turbulence in the treatment room.
  • the separation into a treatment area and a reflux area can be used advantageously for a targeted supply of fresh pickling medium which the pickling medium is fed to the sides of the container through inlets and introduced into the treatment room below the plate by the action of a nozzle or that the pickling medium below the belt through the bottom of the container is supplied.
  • the injection is preferably carried out in the area of the belt inlet, so that the freshly supplied pickling medium first on Belt is passed along before it over the reflux area formed by the plate recirculated in the pickling tank.
  • a particularly favorable design of the injection results if this in Angle is directed against the direction of movement of the belt. This is causing a reduction in the drag effect of the belt and therefore causes a further reduction of the accumulation height in the area of the belt outlet.
  • An advantageous embodiment of the device according to the invention results if the plate is attached to the lid of the pickling tank and when opening the Lid of this is lifted up with the plate preferably move upwards within certain limits can, in order to avoid collisions with the belt.
  • FIG. 2 a Section through the pickling section shown in Fig. 1
  • Fig. 3 is a plan view 1 shows a pickling section
  • FIG. 4 shows a variant of the top view
  • FIG. 5 a variant of the cross section of the pickling section shown in Fig. 1
  • Fig. 6 shows a variant of the plate with transverse ribs.
  • the system is shown in a highly simplified manner in order to explain the principle can.
  • Fig. 1 shows the exemplary scheme of a pickling section with the associated Pipelines, pumps, heat exchangers and the circulation tank. That too treating belt 1 is guided over squeeze rollers 2 into the pickling section, dips into the liquid bath 3 and becomes at the other end of the pickling section led out of the pickling section by the squeeze rollers 4.
  • the Treatment liquid 5 is from the circulation container 6 via the Pipelines 7, the pump 8 and the heat exchanger 9 through the inlets 10 in the bottom and inlets 11 in the side wall into the liquid bath 3 fed and over the overflow stones 12a at the inlet and 12b at the outlet of the Pickling section derived in collecting vessels 13a, 13b and from there on Pipelines 14a, 14b returned to the circulation tank 6.
  • the Inlets 10 in the floor are directed obliquely against the tape running direction 15 to counteract the flow due to the drag effect of the belt 1.
  • the plate 16 according to the invention is in the liquid bath 3 in the Design variant of a continuous plate arranged. Arrows 17 reinterpret the flow caused by the drag effect of belt 1 the plate 16.
  • Fig. 2 shows a section A-A through the pickling section shown in Fig. 1.
  • the Liquid level is marked with 18.
  • the inlets 11 in the Side wall are arranged so that the treatment liquid 5 in the room flows between the plate 16 and the tape 1.
  • the plate 16 is with the Brackets 19 attached to the cover 20 and is on the side Support stones 21 on.
  • Fig. 3 shows a plan view of the pickling section shown in Fig. 1, the Cover of the pickling section and the tape in the area of the liquid bath 3 are not are shown.
  • the plate 22 is in this embodiment variant shown a perforated plate.
  • the inlets 11 are in the side wall directed obliquely against the tape running direction 15 to the flow due to the To counteract the drag effect of the tape 1.
  • FIG. 4 shows, like FIG. 3, the top view of the pickling section shown in FIG. 1, but with the variant of an interrupted plate 23.
  • FIG. 5 shows, like FIG. 2, the section A-A through that shown in FIG. 1 Pickling section, but with the design variant of a V-shaped plate 24.
  • Fig. 6 shows a section of the pickling section with the tape 1, the Squeeze rollers 4 and the plate 16.
  • the plate 16 here has transverse ribs 25 where the flow is slowed down, which increases Turbulence and thus improved pickling results.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
  • Electroplating Methods And Accessories (AREA)
  • ing And Chemical Polishing (AREA)
  • Manufacturing Of Printed Wiring (AREA)
EP97101302A 1996-03-14 1997-01-29 Vorrichtung zum Oberflächenbehandeln von Bändern mit Flüssigkeiten Expired - Lifetime EP0795629B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AT478/96 1996-03-14
AT47896 1996-03-14
AT0047896A AT403699B (de) 1996-03-14 1996-03-14 Vorrichtung zum oberflächenbehandeln mit flüssigkeiten

Publications (2)

Publication Number Publication Date
EP0795629A1 EP0795629A1 (de) 1997-09-17
EP0795629B1 true EP0795629B1 (de) 2004-07-21

Family

ID=3491686

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97101302A Expired - Lifetime EP0795629B1 (de) 1996-03-14 1997-01-29 Vorrichtung zum Oberflächenbehandeln von Bändern mit Flüssigkeiten

Country Status (12)

Country Link
US (2) US5853495A (ja)
EP (1) EP0795629B1 (ja)
JP (1) JPH108274A (ja)
KR (1) KR970065774A (ja)
CN (1) CN1087360C (ja)
AT (1) AT403699B (ja)
BR (1) BR9701301A (ja)
CA (1) CA2199768A1 (ja)
DE (1) DE59711779D1 (ja)
ID (1) ID16199A (ja)
RU (1) RU2192506C2 (ja)
TW (1) TW367376B (ja)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT403699B (de) * 1996-03-14 1998-04-27 Andritz Patentverwaltung Vorrichtung zum oberflächenbehandeln mit flüssigkeiten
AT407759B (de) * 1997-11-28 2001-06-25 Andritz Patentverwaltung Verfahren und vorrichtung zum oberflächenbehandeln von bändern mit flüssigkeiten
WO1999046427A1 (en) 1998-03-11 1999-09-16 Mitsubishi Heavy Industries, Ltd. Pickling device
WO1999046426A1 (fr) 1998-03-11 1999-09-16 Mitsubishi Heavy Industries, Ltd. Dispositif de decapage
FR2784998B1 (fr) * 1998-10-22 2001-01-12 Kvaerner Metals Clecim Installation de decapage d'une bande metallique
AT408765B (de) * 1999-03-05 2002-03-25 Andritz Ag Maschf Anlage zur kontinuierlichen behandlung von stahlbändern
US6260563B1 (en) 1999-05-20 2001-07-17 Danieli Technology, Inc. High speed pickling with recycling of acid
DE10020634A1 (de) * 2000-04-27 2001-10-31 Sms Demag Ag Turbulenzbeize mit seitlicher Eindüsung
DE10020633A1 (de) * 2000-04-27 2001-11-08 Sms Demag Ag Verfahren und Vorrichtung zum Behandeln der Oberfläche von metallischem Bandgut, insbesondere zum Beizen von Walzgut
DE10030853A1 (de) * 2000-06-23 2002-01-03 Sms Demag Ag Vorrichtung zur Behandlung von metallischem Stranggut, insbesondere zum Beizen von Walzband
FR2917097A1 (fr) * 2007-06-06 2008-12-12 Siemens Vai Metals Tech Sas Installation de decapage de bandes metalliques,notamment en acier
RU2551323C2 (ru) * 2013-07-19 2015-05-20 Сергей Иванович Афанасьев Устройство для обработки металлической ленты в рулоне
US9970141B2 (en) * 2015-02-18 2018-05-15 Morrison Textile Machinery Company Apparatus and method for washing an elongate textile article
JP2019529714A (ja) * 2016-09-27 2019-10-17 ポスコＰｏｓｃｏ 均一処理装置及び酸洗装置

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT295956B (de) * 1969-07-08 1972-01-25 Ruthner Ind Planungs Ag Verfahren und Vorrichtung zur Führung von Tafeln oder endlosen Bändern durch aus flachen Rinnen gebildete Behälter
ATE15236T1 (de) * 1981-02-18 1985-09-15 Mannesmann Ag Vorrichtung zur chemischen oder elektrochemischen oberflaechenbehandlung von behandlungsgut in einem erwaermten fluessigen behandlungsmedium, insbesondere bandbeizanlage.
JPS6141783A (ja) * 1984-08-06 1986-02-28 Hitachi Ltd 高速酸洗装置
DE3629894A1 (de) * 1986-08-29 1988-03-03 Mannesmann Ag Anlage zur oberflaechenbehandlung von kontinuierlich durchlaufenden baendern, insbesondere beizanlage
US4850378A (en) * 1987-10-14 1989-07-25 Nelson Steel Steel pickling apparatus
JP2965310B2 (ja) * 1990-03-16 1999-10-18 株式会社日立製作所 高速酸洗方法および装置
JP3064080B2 (ja) * 1991-01-16 2000-07-12 三菱重工業株式会社 噴流酸洗装置
DE4240572A1 (de) * 1992-12-03 1994-06-09 Schloemann Siemag Ag Beizanlage und Verfahren zum Betreiben der Beizanlage
IT1262244B (it) * 1993-11-30 1996-06-19 Danieli Off Mecc Piastra a tenuta idrodinamica e supporto idrostatico per impianti di decapaggio e/o di trattamenti chimici e/o di lavaggio per nastro metallico
FR2721235B1 (fr) * 1994-06-20 1996-09-06 Clecim Sa Installation de traitement, notamment pour le décapage d'une bande métallique.
AT403699B (de) * 1996-03-14 1998-04-27 Andritz Patentverwaltung Vorrichtung zum oberflächenbehandeln mit flüssigkeiten

Also Published As

Publication number Publication date
ID16199A (id) 1997-09-11
TW367376B (en) 1999-08-21
CN1164580A (zh) 1997-11-12
KR970065774A (ko) 1997-10-13
BR9701301A (pt) 1998-09-01
ATA47896A (de) 1997-09-15
AT403699B (de) 1998-04-27
RU2192506C2 (ru) 2002-11-10
CA2199768A1 (en) 1997-09-14
JPH108274A (ja) 1998-01-13
MX9701801A (es) 1997-09-30
DE59711779D1 (de) 2004-08-26
EP0795629A1 (de) 1997-09-17
CN1087360C (zh) 2002-07-10
USRE37973E1 (en) 2003-02-04
US5853495A (en) 1998-12-29

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