EP0302057B1 - Procede et dispositif de traitement de la surface de bandes avec des fluides - Google Patents

Procede et dispositif de traitement de la surface de bandes avec des fluides Download PDF

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Publication number
EP0302057B1
EP0302057B1 EP87900997A EP87900997A EP0302057B1 EP 0302057 B1 EP0302057 B1 EP 0302057B1 EP 87900997 A EP87900997 A EP 87900997A EP 87900997 A EP87900997 A EP 87900997A EP 0302057 B1 EP0302057 B1 EP 0302057B1
Authority
EP
European Patent Office
Prior art keywords
strip
corrosion
pickling
guide
corrosion container
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
EP87900997A
Other languages
German (de)
English (en)
Other versions
EP0302057A1 (fr
Inventor
Emil Hula
Johann Deyer
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
Priority to AT87900997T priority Critical patent/ATE57717T1/de
Publication of EP0302057A1 publication Critical patent/EP0302057A1/fr
Application granted granted Critical
Publication of EP0302057B1 publication Critical patent/EP0302057B1/fr
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
    • C23G3/021—Apparatus for cleaning or pickling metallic material for cleaning wires, strips, filaments continuously by dipping

Definitions

  • the invention relates to a device for the surface treatment of strips with liquids, in particular for pickling rolled metal strips according to the preamble of claim 1.
  • the known thrust pickles consist of an elongated, cross-sectionally shaped pickling tank, which is at most provided with dividing walls for the simultaneous treatment of several strips, which divide the channel into several parallel channels and can be inserted into or lifted from the container depending on the desired channel width .
  • the strip is pushed, for example, by a straightening machine provided at the entrance of the pickling tank through the tank, which is flooded with pickling acid. It is known to inject the pickling acid on the bottom, for example, in order to achieve a buoyancy by means of which the strip is also supplied with fresh pickling acid on the underside and is guided through the pickling container.
  • the pickling tank is usually closed by a lid which, according to DE-OS 30 00 408, can be provided on the bath side with box-shaped internals immersed in the pickling bath in order to reduce the bath surface and thus reduce the energy consumption, which is largely due to the evaporation of the Pickling acid is caused.
  • wear ribs are provided which run on the bath-side surface of the internals transversely to the direction of movement of the band.
  • the object of the invention is to provide measures to remedy the last-mentioned risk of damage to the system and the belt by lashing up the end of the belt on the inlet side. This object is achieved in a device of the type mentioned by the measures according to the characterizing part of claim 1.
  • Such bevels can also extend over the entire width of the guide beam; they can be chamfered along a curve or several times.
  • the device consists of a decoiler 1, which can possibly consist of independent drain drums for the simultaneous recording of several bundles. From there, the strip 10 is advanced to a straightening machine 2 after the federal government has been opened. This machine not only serves to straighten the belt, it also ensures that the belts are pushed through the system to the first pair of transport rollers 6 and further until the beginning of the belt is taken up by the reel 9.
  • the strip enters the pickling tank 3 and is pushed there through shallow pickling cups which are flooded with pickling acid from an underlying pickling tank.
  • the strip is rinsed, possibly post-treated and finally dried and runs to the reel 9 via pulling rollers (FIGS. 1, 2).
  • the pickling tank 3 is closed by a lid 4.
  • the beginning of the tape or building up tape sections are below the lid on opposite longitudinal shoulders 5 of the side walls 7 guide beams 11, one behind the other, which can reach up to the liquid level.
  • the steering devices and the lids which are independent of this, form a double seal against the atmosphere.
  • An intermediate space is formed between the steering devices and the lids independent thereof, in which an air cushion is formed, in which a limited part of the hydrogen gas formed during the pickling process can pass through the gaps remaining between the steering devices. Together with this hydrogen gas, a small amount of acid vapor inevitably gets into the gap. These gases and vapors, which are now diluted by air, are sucked out of this space through a nozzle 14 in the cover 4.
  • the pickling bath surface is not reduced, the acid evaporation and thus the loss of thermal energy is reduced (FIG. 4).
  • a number of pickling tanks of the type described can be provided, a transport or squeezing roller pair 8 (FIG. 3) between which each of these pickling tanks can be provided, between which the belt 10 passes and the majority of the pickling acid is removed.
  • a transport or squeezing roller pair 8 (FIG. 3) between which each of these pickling tanks can be provided, between which the belt 10 passes and the majority of the pickling acid is removed.
  • Hiebei are the two rollers 8 ', 8 "of the pair of squeezing rollers 8 offset from each other, such that the upper roller 8' seen in the direction of the belt 10, behind the lower roller 8" and which is to separate the pickling liquids of the individual sections is provided with a sealing lip 13. At least one of the two squeeze rollers can be driven.
  • belt side guides 15 (FIGS. 1 and 2), which can be set for the different belt widths, are arranged, for example, in front of the last pair of squeeze rollers of the pickling tub. 5 and 7, there are two opposing carriages 16, 16 ', each of which runs on two pairs of rollers 17 and 17', which are guided in guides 18, each carriage having a rack 19 and a rack 19, respectively 19 'carries which mesh with a gearwheel located jointly in the longitudinal central axis and thereby ensures a synchronized movement of the two carriages 16, 16'.
  • Each of the two carriages 16 and 16 ' is connected to a hydraulic cylinder 21 and 21', which move the carriages 16 and 16 'to each other and against each other.
  • the gearwheel 20 it is also possible for one cylinder 21 to move the carriages 16, 16 'to one another and the other cylinder 21' to move the carriages from one another or vice versa.
  • Each of the two carriages 16, 16 ' carries on the underside a carrier 22, 22', which consists of a plate 23, 23 "made of acid-resistant material, preferably of ceramic, wear-resistant material, which is brought up to the beginning of the tape in order to do this
  • the centering of the belt start occurs at the point in time when the belt start has just passed the centering jaws but has not yet been pinched by the transport rollers.
  • Fig. 8 shows a cross section of the pickling tank 3 with a preferred embodiment of the bottom, which starts on both sides from the side walls 7, slightly inclined down to the center of the bottom.
  • pipe connections 24 are arranged on the side walls 7 at intervals along the pickling tank 3, which open out laterally at an angle and serve to supply pickling liquid.
  • semicircular depressions 25 are provided in the bottom, which also run obliquely to the center and meet there. The longitudinal component of the flow of the pickling liquid is thus directed in the opposite direction to the strip running. So that the tape does not get caught on the edges of the depressions 25, an edge 26 thereof is rounded (FIG. 9).
  • the measures mentioned, namely a slightly sloping shape of the bottom and arrangement of the depressions with the pipe sockets result in a fluidically favorable guidance of the pickling liquid within the pickling tank 3.
  • the pickling liquid is prevented from shooting up when there is no band in the pickling tank 3. Due to the slightly sloping shape of the floor, there is also a certain amount Self-centering of the band achieved in its longitudinal movement.
  • overflow chambers 27 are provided at the side walls 7 at a distance in front of the transport and squeeze rollers, as shown in FIG vertically arranged sliders for overflowing the pickling liquid are provided.
  • the liquid level in the pickling tub can be adjusted by means of the height-adjustable slide 28 or flaps and the like.
  • FIGS. 13a to 13e various forms of guide beams can be used.
  • the bevel runs on the underside on the belt inlet side and only over part of the width of the guide bar 11.
  • the bevel runs over the entire width of the guide bar 11a .
  • the bevel runs on the strip outlet side over part of the width of the guide beam 11b.
  • the bevel extends over the entire width of the guide beam 11c along a curve, e.g. circular arc or exponential.
  • a multiple bevel e.g. twice, provided.
  • the angle or maximum angle (with curved bevel) is 2 to 10 °, preferably 5 °.

Claims (7)

1. Dispositif de traitement de surface de bandes avec des fluides, en particulier pour décaper des bandes métalliques laminées, dans un récipient de décapage en forme de bac, fermé par un couvercle, où il est prévu, comme couverture de l'espace de décapage, suivant la direction de circulation de la bande, des traverses de guidage en matériau résistant, installées dans le récipient de décapage et se suivant les unes derrière les autres dans la direction de circulation de la bande, et où le fond du récipient de décapage (3) en partant des deux côtés des parois latérales (7), s'étend, avec une pente légèrement inclinée vers le bas, en direction du milieu du fond, caractérisé en ce que les traverses de guidage (11) sont chanfreinées vers le bas sur leur face inférieure, au moins sur une partie de la largeur de la traverse de guidage (11) située côté sortie de la bande (10) et en ce qu'elles font dévier, dans la direction de circulation souhaitée, le début de la bande entrante, dans le cas où il se redresse vers le haut.
2. Dispositif suivant la revendication 1, caractérisé en ce que les traverses de guidage (11) sont chanfreinées sur leurface inférieure, sur la totalité de la largeur, située dans la direction de circulation de la bande (10), de la traverse de guidage (11 ) (fig. 13b).
3. Dispositif suivant la revendication 1, caractérisé en ce que les traverses de guidage (11) sont chanfreinées sur leur face inférieure, suivant une courbe, sur la totalité de la largeur, située dans la direction de circulation de la bande (10) de la traverse de guidage (11) (fig. 13d).
4. Dispositif suivant la revendication 1, caractérisé en ce que les traverses de guidage (11) sont chanfreinées en plusieurs fois sur leur face inférieure (fig. 13e).
5. Dispositif suivant l'une quelconque des revendications précédentes, caractérisé en ce que l'angle, ou l'angle maximum, du chanfrein est de 2 à 10°, de préférence 5°.
6. Dispositif suivant la revendication 1, dans lequel des manchons tubulaires (24), débouchant latéralement obliquement dans le récipient de décapage (3) sont disposés de distance en distance, sur les parois latérales (7), le long du récipient de décapage (3) et servent à l'amenée du fluide de décapage, caractérisé en ce que, dans le prolongement des manchons tubulaires (24), des renfoncements (25), de forme semi-circulaire, sont prévus dans le fond du récipient de décapage (3), renfoncements qui sont inclinés vers le milieu du fond du récipient de décapage (3), au moins l'un des bords (26) des renfoncements (25) étant arrondi.
7. Dispositif suivant la revendication 1, caractérisé en ce qu'en avant de la sortie de la bande du récipient de décapage (3), des chambres de débordement (27) pour l'écoulement du fluide de décapage sont prévues sur les parois latérales (7), les chambres de débordement (27) étant disposées à une certaine distance en avant des cylindres de transport et d'essorage, et étant munies de registres (28) ou de clapets, réglables pour le réglage du niveau du fluide de décapage.
EP87900997A 1987-02-05 1987-02-05 Procede et dispositif de traitement de la surface de bandes avec des fluides Expired - Lifetime EP0302057B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87900997T ATE57717T1 (de) 1987-02-05 1987-02-05 Vorrichtung und verfahren zur oberflaechenbehandlung von baendern mit fluessigkeiten.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/AT1987/000005 WO1988005832A1 (fr) 1987-02-05 1987-02-05 Procede et dispositif de traitement de la surface de bandes avec des fluides

Publications (2)

Publication Number Publication Date
EP0302057A1 EP0302057A1 (fr) 1989-02-08
EP0302057B1 true EP0302057B1 (fr) 1990-10-24

Family

ID=3682502

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87900997A Expired - Lifetime EP0302057B1 (fr) 1987-02-05 1987-02-05 Procede et dispositif de traitement de la surface de bandes avec des fluides

Country Status (8)

Country Link
US (1) US4986291A (fr)
EP (1) EP0302057B1 (fr)
JP (1) JPH01501875A (fr)
AT (1) ATE57717T1 (fr)
BR (1) BR8707657A (fr)
DE (1) DE3765779D1 (fr)
SU (1) SU1690547A3 (fr)
WO (1) WO1988005832A1 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT394734B (de) * 1988-11-15 1992-06-10 Andritz Ag Maschf Verfahren und anlage zum beizen von edelstahlbaendern
US5179967A (en) * 1991-08-28 1993-01-19 Nelson Steel Apparatus for rinsing metal strip
FR2709079B1 (fr) * 1993-08-17 1995-11-10 Clecim Sa Installation de traitement d'un produit en bande.
US5566694A (en) * 1995-06-07 1996-10-22 Allegheny Plastics, Inc. Continuous pickling tank with expandable seals
US5803981A (en) * 1997-01-13 1998-09-08 Danieli Wean, A Division Of Danieli Corporation Method and apparatus for continuous pickling of metal strip
AT407759B (de) 1997-11-28 2001-06-25 Andritz Patentverwaltung Verfahren und vorrichtung zum oberflächenbehandeln von bändern mit flüssigkeiten
US6096183A (en) * 1997-12-05 2000-08-01 Ak Steel Corporation Method of reducing defects caused by conductor roll surface anomalies using high volume bottom sprays
AT408765B (de) * 1999-03-05 2002-03-25 Andritz Ag Maschf Anlage zur kontinuierlichen behandlung von stahlbändern
DE10032717A1 (de) * 2000-07-07 2002-01-17 Sms Demag Ag Anlage zur Oberflächenbehandlung von kontinuierlich einen Behandlungsbehälter durchlaufenden Bändern
US9089887B2 (en) * 2012-12-10 2015-07-28 Samuel Steel Pickling Company Line threading device and method

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1671810A (en) * 1926-02-23 1928-05-29 Edward G Caughey Annealing apparatus
US1998192A (en) * 1933-12-22 1935-04-16 Arthur B Haswell Means for guiding and cooling rolled metal
US2418386A (en) * 1942-01-17 1947-04-01 Goodman Mfg Co Continuous pickling and cleaning device for metal
US2650599A (en) * 1948-12-15 1953-09-01 United States Steel Corp Continuous pickling apparatus
US2868540A (en) * 1954-08-16 1959-01-13 Herr Equipment Corp Guide apparatus
BE559389A (fr) * 1956-07-20
US3048503A (en) * 1958-06-19 1962-08-07 Crucible Steel Co America Pickling apparatus and method
DE1146325B (de) * 1959-06-02 1963-03-28 Langbein Pfanhauser Werke Ag Vorrichtung zur Konstanthaltung der Salzkonzentration der Behandlungs-fluessigkeiten, insbesondere beim Galvanisieren und Phosphatieren
US3346255A (en) * 1966-06-01 1967-10-10 Varityper Corp Liquid treatment of sheets
US3417907A (en) * 1967-04-28 1968-12-24 United States Steel Corp Yieldable entry guide for strip-processing line
US3803996A (en) * 1969-10-13 1974-04-16 Ceilcote Co Inc Acid pickle tank covers
US3738629A (en) * 1971-03-04 1973-06-12 Dorn Co V Bar quench fixture
GB1333943A (en) * 1971-07-29 1973-10-17 Mulcahy E W Pickling metals
US4167424A (en) * 1976-05-12 1979-09-11 National Steel Corporation Treatment of metal strip with ultrasonic energy and apparatus therefor
SU820916A1 (ru) * 1979-06-14 1981-04-15 Славянский Филиал Всесоюзного Научно- Исследовательского И Проектно- Конструкторского Институтаметаллургического Машиностроения Устройство дл очистки длинномерныхиздЕлий
EP0058216B1 (fr) * 1981-02-18 1985-08-28 MANNESMANN Aktiengesellschaft Appareil pour le traitement chimique ou électrochimique de surfaces d'objets dans un milieu liquide chauffé, en particulier pour le décapage de bandes
DE3149086A1 (de) * 1981-12-11 1983-06-16 Dr. C. Otto & Comp. Gmbh, 4630 Bochum Behaelter zum beizen von baendern
JPS59160000A (ja) * 1983-02-28 1984-09-10 Kawasaki Steel Corp ストリツプ連続電気めつきのエツジオ−バ−コ−ト防止装置
DE8618433U1 (de) * 1986-07-10 1986-09-11 Keramchemie GmbH, 5433 Siershahn Beizvorrichtung

Also Published As

Publication number Publication date
DE3765779D1 (de) 1990-11-29
ATE57717T1 (de) 1990-11-15
WO1988005832A1 (fr) 1988-08-11
US4986291A (en) 1991-01-22
JPH01501875A (ja) 1989-06-29
JPH0579754B2 (fr) 1993-11-04
BR8707657A (pt) 1989-08-15
EP0302057A1 (fr) 1989-02-08
SU1690547A3 (ru) 1991-11-07

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