EP0602437B1 - Beizanlage und Verfahren zum Betreiben der Beizanlage - Google Patents

Beizanlage und Verfahren zum Betreiben der Beizanlage Download PDF

Info

Publication number: EP0602437B1
Authority: EP; European Patent Office
Prior art keywords: pickling; tanks; strip; tank; acid
Prior art date: 1992-12-03
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

EP93119150A

Other languages

German (de)

English (en)

French (fr)

Other versions

EP0602437A1 (de

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.)

1992-12-03

Filing date

1993-11-27

Publication date

1997-03-12

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(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.

1993-11-27 Application filed by SMS Schloemann Siemag AG, Keramchemie GmbH, Schloemann Siemag AG filed Critical SMS Schloemann Siemag AG

1994-06-22 Publication of EP0602437A1 publication Critical patent/EP0602437A1/de

1997-03-12 Application granted granted Critical

1997-03-12 Publication of EP0602437B1 publication Critical patent/EP0602437B1/de

2013-11-27 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

Images

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 those arranged at least laterally above and below the strip running level on the pool An acidic pickling medium is injected into the injection nozzles, and a pickling system for carrying out the process.
a pickling line with side nozzles above and below the strip running plane has become known from US-A-2 418 386.
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 or pushed through the pickling tanks, 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.
This object is achieved in a method of the type mentioned in that the lateral injections are controlled variably and the pickling medium is injected with a preselectable amount per injection, the media temperature and / or the acid concentration and / or the nozzle outlet speed of the pickling medium being preselectable or . are.
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 preferably the injected quantities of the pickling medium and / or the transfer strategy can be preset and selected with the help of a process computer 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 level, variably controllable injections are arranged in front of or behind floor sliding blocks in the pool and integrated switching valves in the piping of a pump system connected to the pool or pools are, wherein the pump system is advantageously connected to the process computer controlling the switching valves.
the piping which is thus useful and has integrated switching valves, different strategies can be implemented to master the pickling task, for example the amount and intensity of the pickling medium supplied can be varied.
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.
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. How out 3 results, is located in the right side wall 7 of the basin 102 in the direction of travel 5, first one above, then one below (cf.
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 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)
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)
Cleaning By Liquid Or Steam (AREA)
Details Or Accessories Of Spraying Plant Or Apparatus (AREA)
Meat, Egg Or Seafood Products (AREA)
ing And Chemical Polishing (AREA)

EP93119150A 1992-12-03 1993-11-27 Beizanlage und Verfahren zum Betreiben der Beizanlage Expired - Lifetime EP0602437B1 (de)

Applications Claiming Priority (2)

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

Publications (2)

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

Family

ID=6474230

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP93119150A Expired - Lifetime EP0602437B1 (de)	1992-12-03	1993-11-27	Beizanlage und Verfahren zum Betreiben der Beizanlage

Country Status (8)

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

Families Citing this family (24)

* 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.
AT404030B (de) *	1995-02-15	1998-07-27	Andritz Patentverwaltung	Verfahren zur beize von materialien aus stahl, insbesondere edelstahl
AT403699B (de) *	1996-03-14	1998-04-27	Andritz Patentverwaltung	Vorrichtung zum oberflächenbehandeln mit flüssigkeiten
DE19842971A1 (de) *	1998-09-19	2000-04-13	Gewerk Keramchemie	Verfahren und Vorrichtung zum Beizen von ebenflächigem, insbesondere bandförmigem Behandlungsgut
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
EP3385008A1 (de) *	2017-04-04	2018-10-10	Primetals Technologies Austria GmbH	Entzunderungsvorrichtung und verfahren zum chemischen entzundern eines metallbandes
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
EP3967789A1 (en)	2020-09-11	2022-03-16	Centre de Recherches Métallurgiques ASBL - Centrum voor Research in de Metallurgie VZW	Ultrafast pickling method and installation therefor
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

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US3445284A (en) *	1963-11-18	1969-05-20	Dravo Corp	Process for pickling of steel strip and regeneration of the contact acid
DE3209890C2 (de) *	1982-03-18	1986-04-10	Bwg Bergwerk- Und Walzwerk-Maschinenbau Gmbh, 4100 Duisburg	Beizanlage zum kontinuierlichen Beizen von Metallbändern
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US4920995A (en) *	1988-08-18	1990-05-01	Continental Installers Corporation	Process for continuous strip pickling
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
DE4031234C2 (de) *	1990-10-04	1994-02-03	Gewerk Keramchemie	Verfahren und Vorrichtung zur Oberflächenbehandlung von bandförmigem Behandlungsgut
DE4033867C2 (de) *	1990-10-22	1993-11-11	Mannesmann Ag	Verfahren zum Beizen von Bändern

1992
- 1992-12-03 DE DE4240572A patent/DE4240572A1/de not_active Withdrawn
1993
- 1993-11-27 EP EP93119150A patent/EP0602437B1/de not_active Expired - Lifetime
- 1993-11-27 ES ES93119150T patent/ES2099886T3/es not_active Expired - Lifetime
- 1993-11-27 DE DE59305747T patent/DE59305747D1/de not_active Expired - Fee Related
- 1993-11-27 AT AT93119150T patent/ATE150098T1/de not_active IP Right Cessation
- 1993-12-02 RU RU93053904A patent/RU2115768C1/ru not_active IP Right Cessation
- 1993-12-02 JP JP30293393A patent/JP3322965B2/ja not_active Expired - Fee Related
- 1993-12-03 US US08/161,838 patent/US5545260A/en not_active Expired - Fee Related
- 1993-12-03 CN CN93120812A patent/CN1037706C/zh not_active Expired - Fee Related

Also Published As

Publication number	Publication date
ES2099886T3 (es)	1997-06-01
RU2115768C1 (ru)	1998-07-20
JPH06322568A (ja)	1994-11-22
CN1088631A (zh)	1994-06-29
ATE150098T1 (de)	1997-03-15
EP0602437A1 (de)	1994-06-22
CN1037706C (zh)	1998-03-11
JP3322965B2 (ja)	2002-09-09
DE4240572A1 (de)	1994-06-09
DE59305747D1 (de)	1997-04-17
US5545260A (en)	1996-08-13

Publication	Publication Date	Title
EP0602437B1 (de)	1997-03-12	Beizanlage und Verfahren zum Betreiben der Beizanlage
DE1942698B2 (de)	1974-09-12	Verfahren und Vorrichtung zur mehrstufigen biologischen Behandlung von Abwasser
DE68916603T2 (de)	1994-12-15	Verfahren zur schnellen Direktkühlung warmgewalzter Drähte.
DE3139630A1 (de)	1982-05-27	Vorrichtung zum bearbeiten von druckplatten
DE69003303T2 (de)	1994-01-13	Verfahren zum kontinuierlichen Verändern des Färbebades in einer Färbedüseneinrichtung.
DE2539422A1 (de)	1976-03-25	Verfahren zum kuehlen heissgewalzter stangen, knueppel oder barren und kuehlsystem zur ausuebung des verfahrens
DE69304318T2 (de)	1997-03-06	Verfahren und vorrichtung zur selektiven reduktion des stickstoffoxidgehaltes von abgasen einer ofenanlage
EP0302057B1 (de)	1990-10-24	Vorrichtung und verfahren zur oberflächenbehandlung von bändern mit flüssigkeiten
DE3039154C2 (de)	1983-09-22	Vorrichtung zur direkten Wärmebehandlung von warmgewalztem Stahldraht
DE2140612A1 (de)	1973-02-08	Verfahren zur behandlung oder ausruestung von stoff und vorrichtung zur ausfuehrung des verfahrens
WO2020015950A1 (de)	2020-01-23	Beizanlage zur oberflächenbehandlung von bandstahl
DE4118927C2 (ja)	1993-05-13
EP0383786B1 (de)	1992-05-06	Vorrichtung zur erzeugung eines wasservorhangs
DE19901401A1 (de)	2000-07-27	Verfahren und Vorrichtung zum Beizen und Reinigen von gewalztem Stahlband
AT394734B (de)	1992-06-10	Verfahren und anlage zum beizen von edelstahlbaendern
EP0708186B1 (de)	1999-06-16	Verfahren und Vorrichtung zur kontinuierlichen Oberflächenbehandlung, insbesondere zum Beizen und Reinigen von Bändern
EP1276918A1 (de)	2003-01-22	Verfahren und vorrichtung zum behandeln der oberflächen von metallischen, insbesondere zum beizen von walzgut
DE2502146A1 (de)	1975-07-31	Vorrichtung zum waschen oder dergl. behandeln von langgestrecktem material, insbesondere textilbahnen, -straengen oder dergl.
DE10032717A1 (de)	2002-01-17	Anlage zur Oberflächenbehandlung von kontinuierlich einen Behandlungsbehälter durchlaufenden Bändern
DE2611454B2 (de)	1980-02-14	Abtreibkolonne
DE3244962C1 (de)	1984-05-10	Verfahren und Vorrichtung zur Abwasserreinigung
DE2023615C3 (de)	1979-01-25	Verfahren zum Beaufschlagen eines kontinuierlich betriebenen Behandlungsbehälters und zur Durchführung des Verfahrens geeigneter Behälter
DE4139408A1 (de)	1992-07-02	Elektrische entladungsmaschine
AT399517B (de)	1995-05-26	Verfahren zur oberflächenbehandlung von im wesentlichen ebenem flächigem gut, insbes. zum beizen von metallband
DE2207026A1 (de)	1973-09-20	Verfahren zum abkuehlen von bandbunden in warmbandwalzwerken und anordnung zur durchfuehrung des verfahrens

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