EP0926268A1 - Procédé et dispostif pour guider des bandes à travers des bains de traitement - Google Patents

Procédé et dispostif pour guider des bandes à travers des bains de traitement Download PDF

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Publication number
EP0926268A1
EP0926268A1 EP98119978A EP98119978A EP0926268A1 EP 0926268 A1 EP0926268 A1 EP 0926268A1 EP 98119978 A EP98119978 A EP 98119978A EP 98119978 A EP98119978 A EP 98119978A EP 0926268 A1 EP0926268 A1 EP 0926268A1
Authority
EP
European Patent Office
Prior art keywords
belt
treatment
tape
pickling
band
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.)
Withdrawn
Application number
EP98119978A
Other languages
German (de)
English (en)
Inventor
Günther Dipl.-Ing. Hiden
Peter Dr. Ing. Gravert
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 Patentverwaltungs GmbH
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 Patentverwaltungs GmbH filed Critical Andritz Patentverwaltungs GmbH
Publication of EP0926268A1 publication Critical patent/EP0926268A1/fr
Withdrawn legal-status Critical Current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
    • C23G3/024—Apparatus for cleaning or pickling metallic material for cleaning wires, strips, filaments continuously by a combination of dipping and 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
    • 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
    • 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
    • C23G3/025—Details of the apparatus, e.g. linings or sealing means
    • C23G3/026—Details of the apparatus, e.g. linings or sealing means for guiding the objects

Definitions

  • the invention relates to a method for improved guidance of a band in the treatment bath of belt treatment plants, in which that too treating band-shaped metal band horizontally by flat Liquid baths is performed.
  • such belt treatment plants such as e.g. Pickling
  • liquid baths with a bath depth of approx. 100 mm to 500 mm and usually 10 m to 40 m in length per single bath.
  • the Reaction speed of the treatment medium on the belt surface of the band-shaped material to be treated is minimized Bath depth is positively influenced because the higher Reynolds number means a higher one Bath turbulence and, due to increased shear, a reduction in Liquid boundary layer on the belt enters. There is therefore a tendency to bath depths becoming smaller and smaller and consequently becoming smaller Sag of the belt in the treatment bath.
  • the surface quality of the band to be treated due to ground contact in the Treatment bath not due to scratches, abrasions or smoothing be affected. While the one to be treated at greater bath depths Belt can be passed in a chain line through the treatment baths without touching the floor, this is low for bathrooms Belt slack is only possible with ground contact, because the slack length ratio for a stable regulation of the belt slack is unfavorable. Then only one caused by the tape pull occurs Relief of the ground contact, but not lifting the belt from the ground. Often, sliding blocks are then placed in the ground in order to Limit ground contact to these sliding blocks.
  • Continuous belt treatment plants have well-known ones Means to bring the individual strips to be treated together weld and so without interruption through the treatment baths to draw.
  • a special type of belt treatment plant e.g. Thrust pickling according to EP 0 302 057 B1
  • the strips are individually with the Band tip ahead through appropriate facilities by the Treatment bath pushed, then gripped at the tip of the tape and then completely drawn through the treatment bath.
  • These plants are subject to the treatment bath after the insertion process the same conditions described above as continuous Conveyor systems.
  • no relief of the Contact forces between the belt and the bathroom floor are achieved by the belt pull be because of the loose beginning or end of the band insufficient tape tension can be applied.
  • loops of tape can arise due to friction between belt and bathroom floor or malfunctions when the belt starts caused, so that the plant operation is interrupted and the tape must be reinserted into the treatment bath.
  • the purpose of this invention is to guide the tape in the manner described above Belt treatment plants with flat long treatment baths to improve in that the ground contact at low Speeds is reduced and the functional uncertainty due to Loop formation in systems with tape insertion is improved.
  • the invention is therefore characterized in that Treatment medium between the floor and the belt to be treated is injected and creates a support and suction effect that the support of the Belt relieved on the vat bottom and a lifting of the belt with special needs. This means that when the belt is stationary, it runs slowly Belt as well as at high belt speeds the belt near the ground fixed.
  • the ratio is decisive for the resulting forces on the belt between flow velocity and fluid friction between belt and bottom of the treatment container in the area around a support source.
  • Height Flow velocities below the band lead to formation from areas of low pressure, the resulting force component the weight of the belt and the suction effect of the Swelling current pulls the belt towards the ground.
  • With decreasing distance of the Band to the ground increases the flow resistance and thus the Pressure below the band, so that there is a certain gap height Carrying effect that the flat contact of the tape with the floor prevented.
  • the distance of the band to be treated to the bottom of the container is therefore in the equilibrium position of negative pressure, positive pressure and on the belt external forces fixed.
  • the source flow becomes a flow due to the drag effect of the Band superimposed, resulting in a large spread of the hydrodynamic effect of ligament fixation leads.
  • a favorable development of the invention is characterized in that at least two inflows are provided, between which by the Barrier effect of the inflow a carrier bag is formed.
  • the repeated arrangement of the hydrodynamic fixation in Belt length direction significantly reduces the free kink length of the belt and thus reducing the risk of loop formation.
  • An advantageous embodiment of the invention is characterized in that that especially with thin tapes due to the suction effect of the hydrodynamic fixation combined with a flat trough trained bottom of the treatment tank a crossbow This increases the stiffness.
  • a favorable development of the invention is characterized in that at least two communicating sources with unrestricted inlets for the supply of treatment liquid is arranged below the belt are.
  • the suction effect of the sources in combination with the mechanical Coupling through the belt alternately shifts the amount of discharge again from one source to another communicating source and thus forms an oscillatory system.
  • the resulting violent vibration of the band has an advantageous effect on the reduction of the band near Boundary layer.
  • Has proven to be favorable for the oscillating movement of the belt an arrangement of the sources next to each other transversely to the tape running direction with a distance that is less than the bandwidth.
  • a favorable development of the invention is characterized in that at least two communicating sources with unrestricted inlets for the supply of treatment liquid is arranged below the belt are and with the mechanical coupling through the belt form an oscillatory system.
  • the communicating sources can can also be arranged alternatively above the belt.
  • the invention also relates to a device for the surface treatment of Belts with liquids, especially for pickling rolled Metal straps in a trough-shaped, closed by a lid Pickling tank, with a low pickling bath height. It is through it characterized in that the bottom of the pickling tank in the area of the treating band with one or more inflow openings is passed through the treatment liquid to the underside of the belt becomes.
  • a preferred development of the invention is characterized in that that at least two inflow openings in the bottom of the pickling tank are present and thus between the inflow openings through the Barrier effect of the inflow a carrier bag is formed.
  • An advantageous embodiment of the invention is characterized in that that one or more inflow openings are present above the belt are to guide the tape and inequalities in the pickling effect between Level the top and bottom of the band.
  • a favorable development of the invention is characterized in that the inflow openings are directed obliquely against the tape running direction to counteract the drag effect from the running belt.
  • a favorable development of the invention is characterized in that the bottom of the treatment container is designed as a flat trough.
  • An advantageous development of the invention is characterized in that that at least two communicating sources with unthrottled Inlets for the supply of treatment liquid below the belt are arranged and with the mechanical coupling through the tape form an oscillatory system.
  • the communicating sources can alternatively be arranged above the belt.

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)
EP98119978A 1997-11-28 1998-10-22 Procédé et dispostif pour guider des bandes à travers des bains de traitement Withdrawn EP0926268A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT201997 1997-11-28
AT0201997A AT407759B (de) 1997-11-28 1997-11-28 Verfahren und vorrichtung zum oberflächenbehandeln von bändern mit flüssigkeiten

Publications (1)

Publication Number Publication Date
EP0926268A1 true EP0926268A1 (fr) 1999-06-30

Family

ID=3526060

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98119978A Withdrawn EP0926268A1 (fr) 1997-11-28 1998-10-22 Procédé et dispostif pour guider des bandes à travers des bains de traitement

Country Status (7)

Country Link
US (1) US6206979B1 (fr)
EP (1) EP0926268A1 (fr)
KR (1) KR100543566B1 (fr)
CN (1) CN1318648C (fr)
AT (1) AT407759B (fr)
BR (1) BR9804747B1 (fr)
TW (1) TW455561B (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT408765B (de) * 1999-03-05 2002-03-25 Andritz Ag Maschf Anlage zur kontinuierlichen behandlung von stahlbändern
AT413220B (de) * 2002-11-29 2005-12-15 Voest Alpine Ind Anlagen Verfahren und vorrichtung zur, insbesondere kontinuierlichen, oberflächenbehandlung, insbesondere zur reinigung, eines metallbandes
CN100434570C (zh) * 2006-07-13 2008-11-19 山西太钢不锈钢股份有限公司 铬不锈钢酸洗冷却方法
WO2018062860A2 (fr) * 2016-09-27 2018-04-05 주식회사 포스코 Appareil de traitement uniforme et appareil de décapage
USD1021133S1 (en) * 2022-03-17 2024-04-02 Robert Bosch Gmbh Loudspeaker accessory tray

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1326203A (en) * 1969-07-08 1973-08-08 Ruthner Ind Planungs Ag Method of and apparatus for guiding a workpiece
EP0058216A1 (fr) * 1981-02-18 1982-08-25 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
GB2117006A (en) * 1982-03-18 1983-10-05 Bwg Bergwerk Walzwerk Pickling line for continuous metal strip
EP0795629A1 (fr) * 1996-03-14 1997-09-17 Andritz-Patentverwaltungs-Gesellschaft m.b.H. Appareil de traitement de surfaces de bandes à l'aide de liquides

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH201016A (de) * 1936-12-24 1938-11-15 Remy Van Der Zypen & Co Verfahren und Vorrichtung zur Behandlung von Blechtafeln in Flüssigkeiten.
DE3629894A1 (de) 1986-08-29 1988-03-03 Mannesmann Ag Anlage zur oberflaechenbehandlung von kontinuierlich durchlaufenden baendern, insbesondere beizanlage
EP0302057B1 (fr) 1987-02-05 1990-10-24 Maschinenfabrik Andritz Actiengesellschaft Procede et dispositif de traitement de la surface de bandes avec des fluides
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
DE4031234C2 (de) * 1990-10-04 1994-02-03 Gewerk Keramchemie Verfahren und Vorrichtung zur Oberflächenbehandlung von bandförmigem Behandlungsgut
JP3064080B2 (ja) 1991-01-16 2000-07-12 三菱重工業株式会社 噴流酸洗装置
FR2709079B1 (fr) * 1993-08-17 1995-11-10 Clecim Sa Installation de traitement d'un produit en bande.
FR2721235B1 (fr) 1994-06-20 1996-09-06 Clecim Sa Installation de traitement, notamment pour le décapage d'une bande métallique.
AT404601B (de) * 1994-10-17 1999-01-25 Andritz Patentverwaltung Verfahren u. vorrichtung zur kontinuierlichen oberflächenbehandlung, insbesondere zum beizen u. reinigen von bändern, beispielsweise metall-, insbesondere stahlbändern

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1326203A (en) * 1969-07-08 1973-08-08 Ruthner Ind Planungs Ag Method of and apparatus for guiding a workpiece
EP0058216A1 (fr) * 1981-02-18 1982-08-25 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
GB2117006A (en) * 1982-03-18 1983-10-05 Bwg Bergwerk Walzwerk Pickling line for continuous metal strip
EP0795629A1 (fr) * 1996-03-14 1997-09-17 Andritz-Patentverwaltungs-Gesellschaft m.b.H. Appareil de traitement de surfaces de bandes à l'aide de liquides

Also Published As

Publication number Publication date
AT407759B (de) 2001-06-25
BR9804747A (pt) 1999-11-09
TW455561B (en) 2001-09-21
KR100543566B1 (ko) 2006-05-16
CN1318648C (zh) 2007-05-30
KR19990045680A (ko) 1999-06-25
ATA201997A (de) 2000-10-15
BR9804747B1 (pt) 2009-01-13
US6206979B1 (en) 2001-03-27
CN1224776A (zh) 1999-08-04

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