EP0602437A1 - Installation de décapage et procédé d'exploitation de l'installation - Google Patents

Installation de décapage et procédé d'exploitation de l'installation Download PDF

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Publication number
EP0602437A1
EP0602437A1 EP93119150A EP93119150A EP0602437A1 EP 0602437 A1 EP0602437 A1 EP 0602437A1 EP 93119150 A EP93119150 A EP 93119150A EP 93119150 A EP93119150 A EP 93119150A EP 0602437 A1 EP0602437 A1 EP 0602437A1
Authority
EP
European Patent Office
Prior art keywords
pickling
basin
medium
acid
injections
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.)
Granted
Application number
EP93119150A
Other languages
German (de)
English (en)
Other versions
EP0602437B1 (fr
Inventor
Horst Gärtner
Friedrich Dr. Hollmann
Rafael Dr. Rituper
Bodo Dr. Block
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.)
Keramchemie GmbH
SMS Siemag AG
Original Assignee
SMS Schloemann Siemag AG
Keramchemie GmbH
Schloemann Siemag 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6474230&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0602437(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by SMS Schloemann Siemag AG, Keramchemie GmbH, Schloemann Siemag AG filed Critical SMS Schloemann Siemag AG
Publication of EP0602437A1 publication Critical patent/EP0602437A1/fr
Application granted granted Critical
Publication of EP0602437B1 publication Critical patent/EP0602437B1/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
    • C23G3/024—Apparatus for cleaning or pickling metallic material for cleaning wires, strips, filaments continuously by a combination of dipping and spraying

Definitions

  • the invention relates to a method for operating a pickling system for pickling rolled strips in, in particular, a plurality of pickling tanks arranged one behind the other and filled with an acid-containing pickling medium, through which the strip is moved, and into which an acid-containing pickling medium is injected via injection nozzles arranged at least on the side of the tank , as well as a pickling plant for performing the method.
  • the surface of the strip Before further processing of rolled strips, the surface of the strip must be free of scale.
  • the scale is produced as a so-called secondary scale as it passes through the hot strip finishing line, on the cooling roller table and also partially in the coiler where the strips are wound into coils or coils.
  • the scale achieves a different layer thickness and a different chemical structure.
  • Acid pickling of this type can consist of several flat pickling tanks arranged one behind the other, which are operated with, for example, 18% preheated hydrochloric acid.
  • the belt is pulled through the pickling tank or - pushed, whereby the scale layer dissolves in the acid.
  • the acid itself depletes in its concentration during the pickling process, so that the continuous supply of fresh acid is required.
  • the acid is introduced into the last pickling tank. This is intended to give the surface of the strip the final treatment before leaving the stain.
  • the pickling agent is pumped from the last basin in countercurrent to the upstream basin, so that the acid reaches the basin further ahead with decreasing concentration.
  • the invention is therefore based on the object of providing a method and a device with which the operation of a generic pickling system can be improved, in particular a flexible adaptation to the respective pickling task with the aim of reducing the pickling time.
  • the lateral injections are controlled variably and, in an advantageous embodiment of the invention, the pickling medium is injected with an arbitrarily preselectable amount per injection. It is also proposed that the media temperature and / or the acid concentration and / or the nozzle outlet speed of the pickling medium can be or are preselectable. The invention is based on the knowledge gained from the long-term operation of such systems that a significant potential of possible measures has so far remained unused to reduce the pickling time.
  • This potential lies in the chemical reaction between the scale layer and the pickling agent, which takes place at different speeds, depending on the material quality, the scale layer thickness and the scale structure, the iron content of the pickling agent, the acid content and the temperature of the pickling medium.
  • the inventive selective activation and variable control of the preferably lateral injections into the individual pools with any preselectable amount of the injected pickling medium achieves an optimized swirling on the top and bottom of the strip, with the result that the predetermined acid concentration is established in the boundary layer.
  • the pickling medium is preferably transferred from one tank to another tank according to process-related requirements, whereby the injected quantities of the pickling medium and / or the transfer strategy can preferably be preset and selected with the help of a process computer, the side of the pickling medium can be injected forth, preferably at several points along the length of the pickling tank, and the strategy for pumping around the pickling agent from one to the other tank to achieve an optimal adaptation of the operation of the pickling system to the respective pickling task.
  • the conditions resulting from the combination of material quality, scale layer thickness and structure are regarded as pickling tasks.
  • the measures according to the invention thus allow the pickling line to be preset as a function of the pickling task. They enable flexible adaptation to the respective pickling task and lead to a reduction in the pickling time and avoid over-pickling.
  • the actuators required for this are provided according to the invention in that on both sides of the pool (s) above and below the belt running plane, existing injections are arranged in front of and behind floor sliding blocks in the pool.
  • the injections can be advantageous over the length of the pelvis alternately offset and / or alternately above and below the belt level. It is recommended that a double injection with opposing spray nozzles is arranged at least on the outlet side of the basin or basins. Double injection means that there is both a lower and an upper injection on each side and the two injections are in the same plane.
  • the injections can be arranged at a distance of 0 to 2000 mm in front of or behind the floor sliding blocks.
  • the floor sliding blocks which are arranged transversely to the belt running direction, support the belt downwards on the one hand and, on the other hand, serve to mix the pickling medium, which is further supported by the arrangement of the injections found at a distance from the floor sliding blocks. Because in the area of the floor sliding stones, there are no longer any dead zones with low-acid treatment liquid, rather the bath liquid is also mixed and whirled there vigorously.
  • the double injection which is arranged at least on the outlet side of the basin or basins, causes a strong turbulence, since the aligned opposite liquid jets complement each other in the turbulence of the treatment liquid and ensure a uniform temperature or temperature compensation.
  • switching valves are integrated in the piping of a pump system connected to the pool or pools, the pump system advantageously being connected to the process computer controlling the switching valves.
  • the piping which is therefore useful and has integrated switching valves, different strategies can be implemented to cope with the pickling task, for example the amount and intensity of the pickling medium supplied can be varied.
  • Additional switching valves enable different transfer strategies for transferring the pickling medium from one tank to the other tank. These consist essentially in the fact that the transfer of the basins can be carried out in synchronism with the direction of travel of the belt, in an opposite direction or as a combination of the same and the opposite direction.
  • the pickling task is to be optimally solved with the selected strategy.
  • the acid is introduced into the first tank and passed on to the subsequent tank at the end of the tank.
  • the pre-setting of the transfer strategy including the injection of acid can also be carried out manually, based on the experience gained, however the use of a process computer is recommended.
  • FIG. 1 Only one basin 2 of a pickling plant 1 is shown in FIG. 1; The basin 2 can be followed by further basins, each filled with a pickling medium up to the liquid level 3.
  • a e.g. strip 4 rolled in a hot strip finishing mill is moved through the basin 2 in the direction of arrow 5 by means not shown, e.g. pulled or pushed.
  • the belt 4 is supported on floor sliding blocks 6, which are arranged at a distance from one another on the pelvic floor transversely to the belt running direction 5.
  • the left end of the basin 2 is provided below the band 4 in the side walls 7 (see FIG. 3) provided inlets 8 opposite one another in alignment.
  • Double injections 9 are then arranged towards the outlet side.
  • These consist of spray nozzles 10 arranged on both sides of the basins 2, both above and below the belt running level, which inject fresh acid into the liquid bath.
  • Fresh acid is also introduced via supply pipes 11 with distributor nozzles 12 which are laid on the inlet and outlet sides above the liquid level 3.
  • the nozzles 12 are aligned in such a way that the inlet-side distributor nozzles 12 in and the outlet-side distributor nozzles 12 are directed against the surface of the belt 4 counter to the direction of belt travel 5.
  • the basin 102 of a pickling system 100 shown in FIGS. 2 to 4 differs from the embodiment according to FIG. 1 only in a different arrangement of the injections 8, so that corresponding components are provided with the same reference numbers.
  • the injections 8 are arranged alternately above and below the band 4, but without being offset in the longitudinal direction, which would also be a possible variant.
  • the nozzles 8 are connected via pipes 14 to a pump system 15 which feeds fresh acid from the storage tank 16 via the pipes 14 and the spray nozzles 10 or nozzles 8, 9 into the bath liquid.
  • Controllable switching valves 17 integrated in the pipelines are assigned to the injections, which allow selective activation of the spray nozzles 10 and variations in the amount of acid injected.
  • the pump system 15 is - as indicated in FIGS. 1 and 2 by dashed control lines - connected to a process computer 18 shown as a black box.
  • the pipes 14 connected to the process computer 18 via the pump system 15 and having the integrated switching valves 17 thus enable the selective activation of the spray nozzles 10.
  • the transfer is also possible of the pickling medium from one basin to the other basin possible according to different strategies, which are based on whether the transfer of the basin should be carried out in synchronism with the direction 5 of the belt 4, in the opposite direction or as a combination of both.
  • the presetting of the pickling plant 1, 100 to the desired transfer strategy and the pickling task to be carried out ensure that the entire length of the pickling plant 1, 100 adapted to the respective requirements, constant overall level of the acid concentration in the individual basins 2 and reduce the depletion of acid concentration in the boundary layer between the surfaces of the belt 4 and the pickling medium and the dead zones in the area in particular of the bottom sliding blocks 6.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Metallurgy (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Details Or Accessories Of Spraying Plant Or Apparatus (AREA)
  • ing And Chemical Polishing (AREA)
  • Meat, Egg Or Seafood Products (AREA)
EP93119150A 1992-12-03 1993-11-27 Installation de décapage et procédé d'exploitation de l'installation Expired - Lifetime EP0602437B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4240572A DE4240572A1 (de) 1992-12-03 1992-12-03 Beizanlage und Verfahren zum Betreiben der Beizanlage
DE4240572 1992-12-03

Publications (2)

Publication Number Publication Date
EP0602437A1 true EP0602437A1 (fr) 1994-06-22
EP0602437B1 EP0602437B1 (fr) 1997-03-12

Family

ID=6474230

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93119150A Expired - Lifetime EP0602437B1 (fr) 1992-12-03 1993-11-27 Installation de décapage et procédé d'exploitation de l'installation

Country Status (8)

Country Link
US (1) US5545260A (fr)
EP (1) EP0602437B1 (fr)
JP (1) JP3322965B2 (fr)
CN (1) CN1037706C (fr)
AT (1) ATE150098T1 (fr)
DE (2) DE4240572A1 (fr)
ES (1) ES2099886T3 (fr)
RU (1) RU2115768C1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19842971A1 (de) * 1998-09-19 2000-04-13 Gewerk Keramchemie Verfahren und Vorrichtung zum Beizen von ebenflächigem, insbesondere bandförmigem Behandlungsgut
DE19602303C5 (de) * 1995-02-15 2007-05-31 Andritz-Patentverwaltungs-Ges.M.B.H. Verfahren und Vorrichtung zur Beize von Materialbahnen aus Stahl

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3404116A1 (de) * 1984-02-07 1985-08-08 Merck Patent Gmbh, 6100 Darmstadt Stickstoffhaltige heterocyclen
FR2721328B1 (fr) * 1994-06-15 1996-09-06 Ugine Sa Procédé de décapage de matériaux métalliques, notamment en acier allié, en acier inoxydable ou en alliage de titane, par une solution du type contenant des ions ferriques en milieu acide.
AT403699B (de) * 1996-03-14 1998-04-27 Andritz Patentverwaltung Vorrichtung zum oberflächenbehandeln mit flüssigkeiten
FR2784998B1 (fr) * 1998-10-22 2001-01-12 Kvaerner Metals Clecim Installation de decapage d'une bande metallique
IT1302912B1 (it) * 1998-12-10 2000-10-10 Ct Sviluppo Materiali Spa Procedimento accelerato per il decapaggio di nastri d'acciaio edispositivo per realizzarlo.
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
DE10021789A1 (de) * 2000-05-10 2001-11-15 Sms Demag Ag Anlage für die Oberflächenbehandlung eines Metallstranges, insbesondere zum Beizen eines Stahlbandes
KR100825283B1 (ko) * 2001-12-01 2008-04-28 주식회사 포스코 전해청정라인에서의 냉연강판 세정장치 및 이를 이용한세정방법
AT413219B (de) * 2002-09-12 2005-12-15 Voest Alpine Ind Anlagen Verfahren und vorrichtung zur oberflächenbehandlung eines metallbandes
AT413218B (de) * 2002-09-12 2005-12-15 Voest Alpine Ind Anlagen Verfahren und vorrichtung zur, insbesondere kontinuierlichen, oberflächenbehandlung, insbesondere zur reinigung, eines metallbandes
US20040175252A1 (en) * 2003-03-03 2004-09-09 Kurczynski Richard J. Fastener and washer assembly and method of forming same
JP4658834B2 (ja) * 2006-03-13 2011-03-23 新日本製鐵株式会社 噴流式酸洗設備
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
DE102008019301B3 (de) * 2008-04-16 2010-01-07 Thyssenkrupp Steel Ag Schubbeize zum Beizen eines Metallbands
DE102008047029A1 (de) * 2008-09-13 2010-03-18 Sms Siemag Aktiengesellschaft Entzunderungsvorrichtung
CN102330100A (zh) * 2011-07-01 2012-01-25 云南钛业股份有限公司 一种钛带酸洗工艺方法
ES2742827T3 (es) * 2014-12-02 2020-02-17 Cmi Uvk Gmbh Método y sistema de tratamiento de una banda de acero al carbono, especialmente para el decapado
CN105215855B (zh) * 2015-08-21 2017-04-26 太原科技大学 利用磨料浆对金属带材进行抛、喷除鳞的装置
JP6638682B2 (ja) * 2016-12-01 2020-01-29 Ｊｆｅスチール株式会社 シャローバス型酸洗装置
EP3385008A1 (fr) * 2017-04-04 2018-10-10 Primetals Technologies Austria GmbH Décalamineur et procédé de décalaminage chimique d'une bande métallique
CN109185162B (zh) * 2018-10-25 2021-03-19 安徽众源新材料股份有限公司 酸泵及其铜带清洗装置
EP3967789B1 (fr) 2020-09-11 2025-08-13 Centre de Recherches Métallurgiques ASBL - Centrum voor Research in de Metallurgie VZW Procédé de décapage ultrarapide et installation associée
CN112853367B (zh) * 2021-02-26 2021-08-06 温州宪江防腐设备有限公司 一种不锈钢智能酸洗工艺流水线

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2418386A (en) * 1942-01-17 1947-04-01 Goodman Mfg Co Continuous pickling and cleaning device for metal
GB949680A (en) * 1960-02-20 1964-02-19 Kestner App Evaporateurs Improvements in or relating to pickling installations
US3445284A (en) * 1963-11-18 1969-05-20 Dravo Corp Process for pickling of steel strip and regeneration of the contact acid
GB2117006A (en) * 1982-03-18 1983-10-05 Bwg Bergwerk Walzwerk Pickling line for continuous metal strip
JPS60243290A (ja) * 1984-05-17 1985-12-03 Kobe Steel Ltd 酸洗ムラの発生を防止する長尺金属材の酸洗方法
DE3629894A1 (de) * 1986-08-29 1988-03-03 Mannesmann Ag Anlage zur oberflaechenbehandlung von kontinuierlich durchlaufenden baendern, insbesondere beizanlage
WO1990002001A1 (fr) * 1988-08-18 1990-03-08 Continental Installers Corporation Procede et appareil de decapage en continu de bandes metalliques
DE4031234A1 (de) * 1990-10-04 1992-04-09 Gewerk Keramchemie Verfahren und vorrichtung zur oberflaechenbehandlung von bandfoermigem behandlungsgut
EP0482725A1 (fr) * 1990-10-22 1992-04-29 MANNESMANN Aktiengesellschaft Procédé pour décaper des matériaux en bande

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE482725C (de) * 1920-07-27 1929-09-30 Peroxydwerk Siesel Akt Ges Verfahren zum Konzentrieren von verduennten Wasserstoffsuperoxydloesungen durch Destillation im Vakuum
DE881657C (de) * 1949-01-07 1953-07-02 Ici Ltd Verfahren zur Herstellung von Aminen
JPS61235583A (ja) * 1985-04-10 1986-10-20 Sumitomo Metal Ind Ltd 鋼帯の連続酸洗方法
JP3034544B2 (ja) * 1990-01-31 2000-04-17 ヤマハ発動機株式会社 自動二輪車のキックペダル装置

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2418386A (en) * 1942-01-17 1947-04-01 Goodman Mfg Co Continuous pickling and cleaning device for metal
GB949680A (en) * 1960-02-20 1964-02-19 Kestner App Evaporateurs Improvements in or relating to pickling installations
US3445284A (en) * 1963-11-18 1969-05-20 Dravo Corp Process for pickling of steel strip and regeneration of the contact acid
GB2117006A (en) * 1982-03-18 1983-10-05 Bwg Bergwerk Walzwerk Pickling line for continuous metal strip
JPS60243290A (ja) * 1984-05-17 1985-12-03 Kobe Steel Ltd 酸洗ムラの発生を防止する長尺金属材の酸洗方法
DE3629894A1 (de) * 1986-08-29 1988-03-03 Mannesmann Ag Anlage zur oberflaechenbehandlung von kontinuierlich durchlaufenden baendern, insbesondere beizanlage
WO1988001657A1 (fr) * 1986-08-29 1988-03-10 Mannesmann Ag Installation pour le traitement de surface de feuillards defilant en continu, notamment installation de decapage
WO1990002001A1 (fr) * 1988-08-18 1990-03-08 Continental Installers Corporation Procede et appareil de decapage en continu de bandes metalliques
DE4031234A1 (de) * 1990-10-04 1992-04-09 Gewerk Keramchemie Verfahren und vorrichtung zur oberflaechenbehandlung von bandfoermigem behandlungsgut
EP0482725A1 (fr) * 1990-10-22 1992-04-29 MANNESMANN Aktiengesellschaft Procédé pour décaper des matériaux en bande

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 10, no. 120 (C - 343)<2177> 6 May 1986 (1986-05-06) *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19602303C5 (de) * 1995-02-15 2007-05-31 Andritz-Patentverwaltungs-Ges.M.B.H. Verfahren und Vorrichtung zur Beize von Materialbahnen aus Stahl
DE19842971A1 (de) * 1998-09-19 2000-04-13 Gewerk Keramchemie Verfahren und Vorrichtung zum Beizen von ebenflächigem, insbesondere bandförmigem Behandlungsgut

Also Published As

Publication number Publication date
ATE150098T1 (de) 1997-03-15
JPH06322568A (ja) 1994-11-22
ES2099886T3 (es) 1997-06-01
DE4240572A1 (de) 1994-06-09
DE59305747D1 (de) 1997-04-17
JP3322965B2 (ja) 2002-09-09
RU2115768C1 (ru) 1998-07-20
CN1088631A (zh) 1994-06-29
EP0602437B1 (fr) 1997-03-12
CN1037706C (zh) 1998-03-11
US5545260A (en) 1996-08-13

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