EP1283914A2 - Method and device for pickling hot-rolled special steel strips - Google Patents

Method and device for pickling hot-rolled special steel strips

Info

Publication number
EP1283914A2
EP1283914A2 EP01938180A EP01938180A EP1283914A2 EP 1283914 A2 EP1283914 A2 EP 1283914A2 EP 01938180 A EP01938180 A EP 01938180A EP 01938180 A EP01938180 A EP 01938180A EP 1283914 A2 EP1283914 A2 EP 1283914A2
Authority
EP
European Patent Office
Prior art keywords
pickling
rinsing
stainless steel
stages
sections
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
EP01938180A
Other languages
German (de)
French (fr)
Other versions
EP1283914B1 (en
Inventor
Michael Haentjes
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.)
SMS Siemag AG
Original Assignee
SMS Demag 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 SMS Demag AG filed Critical SMS Demag AG
Publication of EP1283914A2 publication Critical patent/EP1283914A2/en
Application granted granted Critical
Publication of EP1283914B1 publication Critical patent/EP1283914B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
    • C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
    • C23G1/08—Iron or steel

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)
  • Forging (AREA)

Abstract

The invention relates to a method for pickling hot-rolled special steel strips (1) having an austenite, ferrite and/or martensite structure. The inventive method is carried out in a pickling line (7) with pickling sections (8) containing acids and rinsing sections (9) containing rinsing water (15). The aim of the invention is to provide a method that does not require an additional stretch-leveling step for descaling. The costs for pickling are reduced by pickling the hot-rolled special steel strip (1) in the pickling sections (8) with hydrochloric acid (13) and rinsing it in the first rinsing sections (9) with azotic acid (14) or an equivalent substitute pickling medium (14b) and treating it in further rinsing sections (9) with rinsing water (15).

Description

Verfahren und Einrichtung zum Bt≥izeiYon EdelstahlwarmbändernMethod and device for Bt≥izeiYon stainless steel warming tapes
Die Erfindun betrifft ein Verfahren und eine Einrichtung zum Beizen von Edelstahlwarmbändern mit austenitischem , ferritischem und/oder martensitischem Gefiige, das in einer Beizlinie durch Beizstufen mit Säuren und Spülstufen mit Spülwasser geführt wird.The invention relates to a method and a device for pickling stainless steel warm tapes with austenitic, ferritic and / or martensitic structure, which is guided in a pickling line through pickling stages with acids and rinsing stages with rinsing water.
Beim Beizen eines Edelstahlwarmbandes (DE 195 05 324 C2) wird dieses durch eine Glüh- und Beizlinie geschickt. Vor dem Beizen findet eine Entzunderung statt, die sich in zwei Verfahrensabschnitte gliedert: Das Strahlen und das Beizen. Beim Strahlen wird die Bandoberfläche mechanisch entzundert, indem Partikel auf die Bandoberfläche geschleudert werden, welche den Zunder aufgrund ihrer kinetischen Energie entfernen. Es ist bekannt, In einigen Glüh- und Beizlinien noch zusätzlich einen Streckrichter einzusetzen, der zum einen die Bandqualität im Hinblick auf die Planheit verbessert und zum anderen durch Erzeugen von Rissen in den Zunderschichten den späteren chemischen Beizprozess erleichtern soll. Im Änschluss an die mechanischen Vorentzunderungsschritte wird nasschemisch gebeizt. Dieser Beizvorgang kann je nach Anlagenkonfiguration aus mehreren Schritten bestehen. Für reine Warmbandanlagen wird in der Regel in Schwe- feisäure vorgebeizt, während die Restentzunderung in einer Mischsäure aus Salpetersäure und Flusssäure erfolgt.When pickling a stainless steel hot band (DE 195 05 324 C2), it is sent through an annealing and pickling line. Descaling takes place before pickling, which is divided into two process stages: blasting and pickling. When blasting, the strip surface is mechanically descaled by hurling particles onto the strip surface, which remove the scale due to their kinetic energy. It is known to use a stretch leveler in some annealing and pickling lines, which on the one hand improves the strip quality with regard to flatness and on the other hand is intended to facilitate the subsequent chemical pickling process by producing cracks in the scale layers. Following the mechanical pre-descaling steps, pickling is carried out using wet chemical methods. Depending on the system configuration, this pickling process can consist of several steps. For pure hot strip systems, sulfuric acid is usually pre-pickled, while the remaining descaling takes place in a mixed acid consisting of nitric acid and hydrofluoric acid.
Diese bekannten Verfahren sind schon nachteilig durch den Einsatz von Strahlver- fahren, die die Bandoberfläche in der Rauhigkeit erhöhen und damit die Band- Qualität mindern. Außerdem sind die Betriebskosten durch den Einsatz der Mischsäuren, insbesondere durch die Flusssäure, sehr hoch. Das eingangs bezeichnete Verfahren ist in der Form bekannt (EP 0 706 840 A2), die Herstellung von Edeistahlkaltband inline in unmittelbar aufeinanderfolgenden Arbeitsschritten Entzundern des Vorbandes, Reduzieren des Vorbandes auf Fer- tigdikke, Glühen und Beizen durchzuführen.These known methods are disadvantageous due to the use of blasting methods which increase the roughness of the strip surface and thus reduce the strip quality. In addition, the operating costs are very high due to the use of mixed acids, especially hydrofluoric acid. The method described at the outset is known in the form (EP 0 706 840 A2) of carrying out the manufacture of stainless steel cold strip inline in immediately successive steps, descaling the preliminary strip, reducing the preliminary strip to finished thickness, annealing and pickling.
Der Erfindung liegt die Aufgabe zugrunde, beim Beizen ohne ein zusätzliches Strahlverfahren zum Entzundern auszukommen und die vor allen Dingen die Ko- sten für das Beizen zu senken.The object of the invention is to eliminate the need for an additional blasting process for descaling in pickling and, above all, to reduce the cost of pickling.
Die gestellte Aufgabe wird erfindungsgemäß dadurch gelöst, dass das Edelstahlwarmband in den Beizstufen mit Salzsäure gebeizt und in ersten Spülstufen mit Salpetersäure oder einem gleichwertigen Ersatzbeizmedium gesoft und in weite- ren Spülstufen mit Spülwasser behandelt wird. Dadurch kommt das Verfahren ohne ein zusätzliches Strahlen aus und die Kosten für die Säuren werden gesenkt. Bei dem Beizen mit Salpetersäure oder einem gleichwertigen Ersatzbeizmedium können noch verbliebene Zunderreste auf dem Band entfernt worden. Der Einsatz von Strahlkabinen ist nicht erforderlich. Da das Glühen von Edelstahlwarmband jeweils nach der weiteren Verarbeitung nicht zwingend erforderlich ist, kann die kostspielige Produktion auf einer Glüh- und Beizlinie bei gegebenen Umständen umgangen werden. Das Vorbeizen in der Salzsäure reduziert die gelöste Metallmenge in der Salpetersäure drastisch. Damit ist eine Reduzierung der bekannten problematischen Reaktionsprodukte (NOx-Gase in der Abluft und Nitrate im Ab- wasser), die aus der Produktion bekannt sind, verbunden. Auch bei Einsatz eines entsprechenden Ersatzmediums für die Salpetersäure entfallen ebenfalls die bekannten Nachteile. Nach der Lehre der Erfindung werden außerdem gebeizte Edelstahlwarmbander mit einer verbesserten Oberflächenqualität erzielt. Zudem gestalten sich die Betriebskosten wesentlich niedriger im Vergleich zu den be- kannten Verfahren. In Ausgestaltung ist vorgesehen, dass das Edelstahl warmband in zumindest einer Beizstufe mit Salzsäure gebeizt wird. Der Vorteil ist die drastische Reduzierung der gelösten Metallmenge durch Vorbeizen,The object is achieved according to the invention in that the stainless steel hot band is pickled in the pickling stages with hydrochloric acid and softened with nitric acid or an equivalent replacement pickling medium in the first rinsing stages and treated with rinsing water in further rinsing stages. This means that the process does not require additional blasting and the costs for the acids are reduced. When pickling with nitric acid or an equivalent replacement pickling medium, any remaining scale residue on the belt can be removed. The use of blasting cabins is not necessary. Since the annealing of stainless steel hot band is not absolutely necessary after further processing, the costly production on an annealing and pickling line can be avoided under certain circumstances. The pickling in hydrochloric acid drastically reduces the amount of metal dissolved in the nitric acid. This is associated with a reduction in the known problematic reaction products (NO x gases in the exhaust air and nitrates in the waste water) which are known from production. Even when using an appropriate replacement medium for the nitric acid, the known disadvantages are also eliminated. According to the teaching of the invention, pickled stainless steel warming tapes with an improved surface quality are also achieved. In addition, the operating costs are significantly lower compared to the known methods. In an embodiment it is provided that the stainless steel hot band is pickled with hydrochloric acid in at least one pickling stage. The advantage is the drastic reduction in the amount of metal released by pickling,
6565
Eine weitere Verbesserung besteht darin, dass das Edelstahl warmband in zumindest einer oder mehreren Spülstufen mit der Salpetersäure oder einem gleichwertigen Ersatzbeizmedium behandelt wird. Vorteilhafterweise kann dadurch ein vollständiges Entzundern erreicht worden.Another improvement is that the stainless steel hot band is treated with the nitric acid or an equivalent replacement pickling medium in at least one or more rinsing stages. Complete descaling can thereby advantageously be achieved.
7070
Nach weiteren Maßnahmen ist vorgesehen, dass das Edelstahlwarmband anschließend in zwei oder mehr Spülstufen mit Spülwasser behandelt wird. Dadurch werden die verwendeten Sauren vollends beseitigt.According to further measures, it is provided that the stainless steel hot band is then treated with rinsing water in two or more rinsing stages. This completely eliminates the acids used.
75 Eine Verbesserung der Erfindung besteht ferner darin, dass als gleichwertiges Ersatzbeizmedium ein Wasserstoffperoxid enthaltendes Beizmedium vorgesehen ist. Dieses Beizmedium arbeitet in gleicher Art und Weise wie die Salpetersäure.An improvement of the invention further consists in that a pickling medium containing hydrogen peroxide is provided as the equivalent replacement pickling medium. This pickling medium works in the same way as nitric acid.
Dabei kann das gleichwertige Ersatzbeizmedium aus einem Gemisch von Schwe- 80 feloder Salzsäure mit Wasserstoffperoxid und weiteren Zusätzen gebildet werden.The equivalent replacement pickling medium can be formed from a mixture of sulfuric acid or hydrochloric acid with hydrogen peroxide and other additives.
Die Einrichtung zum Beizen von Edelstahl warmband mit austenitischem, ferritischem und/oder martensitischem Gefüge, das ggfs. hinter einem Weichglühofen durch eine Beizlinie führbar ist, löst die gestellte Aufgabe erfindungsgemäß da-The device for pickling stainless steel hot strip with an austenitic, ferritic and / or martensitic structure, which can possibly be guided through a pickling line behind a soft annealing furnace, achieves the object according to the invention.
85 durch, dass das Edelstahlwarmband bei Eintritt in eine Beizlinie, bestehend aus mehreren Beiztanks mit Salzsäure und mehreren Spültanks mit Salpetersäure oder einem gleichwertigen Ersatzbeizmedium und weiteren Spültanks mit Spülwasser behandelbar ist. Die Vorteile sind die bereits zu den Verfahrensschritten erwähnten Verbesserungen gegenüber dem Stand der Technik.85 that the stainless steel hot band can be treated with rinse water when entering a pickling line consisting of several pickling tanks with hydrochloric acid and several washing tanks with nitric acid or an equivalent replacement pickling medium and further washing tanks. The advantages are the improvements compared to the prior art that have already been mentioned for the method steps.
90 Dabei kann die Anzahl der Beizstufen variiert werden. Eine vorzuziehende Gestaltung ergibt sich daraus, dass in der Beizlinie die ersten drei Beiztanks mit Salzsäure gefüllt sind.90 The number of pickling stages can be varied. A preferred design results from the fact that the first three pickling tanks in the pickling line are filled with hydrochloric acid.
95 Ebenfalls kann das Vorbeizen durch die Anzahl der Beizstufen verlängert oder verkürzt werden, indem in der Beizlinie die Spülstuten aus Spültanks mit Salpetersäure oder einem gleichwertigen Ersatzbeizmedium und anschließenden Spültanks mit Spülwasser bestehen.95 The pickling can also be lengthened or shortened by the number of pickling stages, in that the rinsing mares in the pickling line consist of rinsing tanks with nitric acid or an equivalent substitute pickling medium and subsequent rinsing tanks with rinsing water.
100 Eine vorteilhafte Ausgestaltung wird dahingehend vorgeschlagen, dass die Spülstufen aus zumindest einem Spültank mit Salpetersäure oder mit einem gleichwertigen Ersatzbeizmedium und aus zumindest zwei Spültanks mit Spülwasser gebildet sind.An advantageous embodiment is proposed in that the rinsing stages are formed from at least one rinsing tank with nitric acid or with an equivalent replacement pickling medium and from at least two rinsing tanks with rinsing water.
105 Ein Ausführungsbeispiel der Beizlinie ist in der Zeichnung dargestellt, anhand deren das Verfahren nachfolgend beschrieben wird,105 An exemplary embodiment of the pickling line is shown in the drawing, on the basis of which the method is described below,
Es zeigen:Show it:
110 Figur 1 ein Blockdiagramm einer vollständigen Bandanlage zum Beizen,110 FIG. 1 shows a block diagram of a complete belt system for pickling,
Figur 2 zum Vergleich die Beizstufen einer Normalstahlproduktion undFigure 2 for comparison the pickling stages of a normal steel production and
115 Figur 3 die Beizstufen der Beiz- oder Spültanks in der Edelstahlproduktion.115 Figure 3 shows the pickling stages of the pickling or washing tanks in stainless steel production.
Gemäß Fig. 1 gelangt das Edelstahlwarmband 1 von Bandbunden eines Eingangsabschnittes 2 durch eine Schweiß Vorrichtung 3 (für einen Bundwechsel) durch 120 eine Besäummaschine 4 in einen Eingangsschlingenbildner 5 und , falls erforderlich, durch einen Weichglühofen 6 in die Beizlinie 7. Die Beizlinie 7 bildet Beiz- stufen 8 und Spülstufen 9, die nachstehend noch genauer beschrieben werden. Aus der letzten Spülstufe 9 tritt das Edelstahlwarmband 1 aus und in einen Aus- gangsSchlingenbildner 10 ein und durchläuft bei Bandende eine Ausgangsschere 125 11. Während des kontinuierlichen Durchlaufs wird das Edelstahlwarmband 1 im Ausgangsabschnitt 12 wieder zu Bumden gewickelt.According to FIG. 1, the stainless steel warm strip 1 of strip coils of an input section 2 passes through a welding device 3 (for a coil change) through 120 a trimming machine 4 into an input loop former 5 and, if necessary, through a soft annealing furnace 6 into the pickling line 7. The pickling line 7 forms Strippers stages 8 and rinse stages 9, which are described in more detail below. The stainless steel hot strip 1 exits the last rinsing stage 9 and enters an exit loop former 10 and passes through an output pair of scissors 125 11 at the end of the strip. During the continuous passage, the stainless steel warm strip 1 is wound again in the exit section 12.
Gemäß Fig. 2 mfird innerhalb einer Normalstahlproduktion die Beizlinie 7 in der Beizstufe 8 mit drei Beiztanks und Salzsäure betrieben, während dem die Spülstu- 130 fen sämtlich mit Spülwasser arbeiten (Spülen Nr. 1 und 2, Spülen 3 bis 6).According to FIG. 2, the pickling line 7 in the pickling stage 8 is operated with three pickling tanks and hydrochloric acid during normal steel production, during which the rinsing stages 130 all work with rinsing water (rinsing No. 1 and 2, rinsing 3 to 6).
Gemäß Fig. 3 ist die Beizlinie 7 wie folgt aufgebaut. In Beiztanks 16 der Beizlinie 7 befindet sich jeweils in den Beizstufen 8 als Beizmedium 14a Salzsäure 13. Die Spülstuten 9 werden durch Spültanks 17 gebildet, in denen sich in der Spüle Nr. 1 135 und in der Spüle Nr. 2 Salpetersäure 14 oder ein Ersatzbeizmodium 14b befindet. In den folgenden Spülstufen 9 wird Spülwasser 15 eingesetzt.3, the pickling line 7 is constructed as follows. In pickling tanks 16 of the pickling line 7 there is hydrochloric acid 13 in the pickling stages 8 as pickling medium 14a. The rinsing mares 9 are formed by rinsing tanks 17, in which there is nitric acid 14 or a replacement pickling mode 14 in the sink No. 1 135 and in the sink No. 2 14b is located. In the following rinse stages 9, rinse water 15 is used.
Das Verfahren läuft nun derart ab, dass das Edelstahlwarmband 1 in den Beizstufen 8 mit Salzsäure 13 gebeizt und in ersten Spülstuten 9 mit Salpetersäure 14The process now proceeds in such a way that the stainless steel hot strip 1 is pickled in the pickling stages 8 with hydrochloric acid 13 and in the first rinsing mares 9 with nitric acid 14
140 oder einem gleichwirkenden Ersatzbeizmedium 14b gespült und in weiteren Spülstufen 9 mit Spülwasser 15 behandelt wird. Hierbei können zwei oder mehr Beizstufen 8 mit Salzsäure 13 eingesetzt werden. Ebenso kann das Edeistahlwarmband 1 in zwei oder mehr Spülstufen 9 mit der Salpetersäure 14 oder einem gleichwertigen Ersatzbeizmodium 14b behandelt werden. Anschließend wird das Edel-140 or an equivalent replacement pickling medium 14b is rinsed and treated with rinsing water 15 in further rinsing stages 9. Two or more pickling stages 8 with hydrochloric acid 13 can be used here. Likewise, the stainless steel warming band 1 can be treated in two or more rinsing stages 9 with the nitric acid 14 or an equivalent replacement pickling mode 14b. Then the noble
145 stahlwarmband 1 in zwei oder mehr Spülstufen 9 mit Spülwasser 15 gespült. Bezugszeichenliste145 steel hot band 1 rinsed in two or more rinse levels 9 with rinse water 15. LIST OF REFERENCE NUMBERS
1 Edelstahlwarmb and1 stainless steel warmb
2 Eingangsabschnitt2 entrance section
3 Schweißvorrichtung3 welding device
4 Besäummaschine4 trimming machine
5 Eingangs-Schlingenbildner5 entrance loop formers
6 Weichglühofen6 soft annealing furnace
7 Beizlinie7 pickling line
8 Beizstufen8 pickling levels
9 Spülstufen9 rinse levels
10 Ausgangs-Schlingenbildner10 exit loop formers
11 Ausgangsschere11 output scissors
12 Ausgangsab schnitt12 output section
13 Salzsäure13 hydrochloric acid
14 Salpetersäure14 nitric acid
14a Beizmedium14a pickling medium
14b Ersatzbeizmedium14b replacement pickling medium
15 Spülwasser15 rinse water
16 Beiztanks16 pickling tanks
17 Spültanks 17 rinse tanks

Claims

Patentansprüche claims
175175
1. Verfahren zum Beizen von Edelstahlwarmbändern mit austenitischem, ferritischem und/oder martensitischem Gefiige, das in einer Beizlinie durch Beizstufen mit Säuren und Spülstufen mit Spülwasser geführt wird, 180 dadurch gekennzeichnet, dass das Edelstahlwarmband in den Beizstufen mit Salzsäure gebeizt und in ersten Spülstufen mit Salpetersäure oder einem gleichwertigen Ersatzbeizmedium gespült und in weiteren Spülstufen mit Spülwasser behandelt wird.1.Method for pickling stainless steel warm tapes with austenitic, ferritic and / or martensitic structure, which is carried out in a pickling line through pickling steps with acids and rinsing steps with rinsing water, 180 characterized in that the stainless steel warm band is pickled in the pickling steps with hydrochloric acid and in the first rinsing steps with Nitric acid or an equivalent substitute pickling medium is rinsed and treated with rinsing water in further rinsing stages.
185 2. Verfahrennach Anspruch 1, dadurch gekennzeichnet, dass das Edelstahl warmband in zwei oder mehr Beizstufen mit Salzsäure gebeizt wird.2. The method according to claim 1, characterized in that the stainless steel hot band is pickled in two or more pickling stages with hydrochloric acid.
190 3. Verfahren nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, dass das Edelstahlwarmband in zumindest einer oder mehreren Spülstufen mit der Salpetersäure oder einem gleichwertigen Ersatzbeizmedium behandelt wird.3. The method according to claim 1 or 2, characterized in that the stainless steel hot band is treated in at least one or more rinsing stages with the nitric acid or an equivalent replacement pickling medium.
195195
4. Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass das Edelstahlwarmband anschließend in zwei oder mehr Spülstufen mit Spülwasser behandelt wird.4. The method according to any one of claims 1 to 3, characterized in that the stainless steel hot band is then treated in two or more rinsing steps with rinsing water.
200 200
10. Einrichtung nach Anspruch 9, dadurch gekennzeichnet, dass die Spülstufen (9) aus zumindest einem Spültank (17) mit Salpetersäure (14) oder mit einem gleichwertigen Ersatzbeizmedium (14b) und aus zu- 205 mindest zwei Spültanks (17) Mit Spülwasser (15) gebildet sind. 10. Device according to claim 9, characterized in that the rinsing stages (9) from at least one rinsing tank (17) with nitric acid (14) or with an equivalent replacement pickling medium (14b) and from at least two rinsing tanks (17) with rinsing water ( 15) are formed.
EP01938180A 2000-05-08 2001-05-05 Method and device for pickling hot-rolled special steel strips Expired - Lifetime EP1283914B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10022083 2000-05-08
DE10022083A DE10022083A1 (en) 2000-05-08 2000-05-08 Pickling high grade steel hot strips comprises using hydrochloric acid in the pickling steps, rinsing with nitric acid or a similar value pickling medium in first rinsing steps, etc.
PCT/EP2001/005118 WO2001086024A2 (en) 2000-05-08 2001-05-05 Method and device for pickling hot-rolled special steel strips

Publications (2)

Publication Number Publication Date
EP1283914A2 true EP1283914A2 (en) 2003-02-19
EP1283914B1 EP1283914B1 (en) 2004-06-30

Family

ID=7640997

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01938180A Expired - Lifetime EP1283914B1 (en) 2000-05-08 2001-05-05 Method and device for pickling hot-rolled special steel strips

Country Status (13)

Country Link
US (1) US6843860B2 (en)
EP (1) EP1283914B1 (en)
JP (1) JP2004511649A (en)
KR (1) KR20020091279A (en)
CN (1) CN1281789C (en)
AT (1) ATE270354T1 (en)
CA (1) CA2406647A1 (en)
DE (2) DE10022083A1 (en)
ES (1) ES2223866T3 (en)
MX (1) MXPA02011004A (en)
TR (1) TR200401642T4 (en)
WO (1) WO2001086024A2 (en)
ZA (1) ZA200209827B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2576868B1 (en) * 2010-05-27 2018-07-11 MJ Liquid Solutions Inc. Method of treating rolled steel article
CN102011131B (en) * 2010-07-27 2012-05-23 福建方明环保科技有限公司 Sewage zero-emission metal strip surface cleaning device and method
CN103572037A (en) * 2013-10-12 2014-02-12 酒泉钢铁(集团)有限责任公司 Steel hot-rolled coil plate collinear heat treatment production line and production technique thereof
CN112795934B (en) * 2020-12-27 2022-07-08 山东盛阳金属科技股份有限公司 Acid pickling system and process for 300-series stainless steel pattern plate

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL220946A (en) * 1956-09-25
JPS6063390A (en) * 1983-09-19 1985-04-11 Kawasaki Steel Corp Method for continuously pickling ferritic and martensitic stainless steel strip
JP2613317B2 (en) * 1990-04-20 1997-05-28 川崎製鉄株式会社 Annealing and descaling of stainless steel strip
US5821212A (en) * 1997-02-13 1998-10-13 Crown Technology, Inc. Rinse aid and process for stainless steel

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0186024A2 *

Also Published As

Publication number Publication date
CN1439063A (en) 2003-08-27
US6843860B2 (en) 2005-01-18
DE10022083A1 (en) 2001-11-15
EP1283914B1 (en) 2004-06-30
US20030178045A1 (en) 2003-09-25
MXPA02011004A (en) 2003-04-25
TR200401642T4 (en) 2004-08-23
KR20020091279A (en) 2002-12-05
DE50102747D1 (en) 2004-08-05
JP2004511649A (en) 2004-04-15
WO2001086024A2 (en) 2001-11-15
CN1281789C (en) 2006-10-25
ES2223866T3 (en) 2005-03-01
ZA200209827B (en) 2003-10-07
WO2001086024A3 (en) 2002-11-07
CA2406647A1 (en) 2002-10-28
ATE270354T1 (en) 2004-07-15

Similar Documents

Publication Publication Date Title
DE4423664A1 (en) Process for producing cold-rolled steel strips from stainless steel and metal strips, in particular from titanium alloys
AT504782B1 (en) METHOD FOR PRODUCING A HOT-ROLLED STEEL STRIP AND COMBINED CASTING AND ROLLING MACHINE TO PERFORM THE METHOD
EP0770707B1 (en) Process for producing cold-rolled strip continuously
DE69919031T2 (en) METHOD FOR PRODUCING STAINLESS STEEL BELTS AND INTEGRATED ROLLING STREET
EP1558779A1 (en) Method and device for descaling and/or cleaning a metal casting
DE4437872C1 (en) Method for producing metal sheets, in particular large-sized metal sheets, and device
EP0504655A1 (en) Method and plant for rolling wire or rounds into coils from carbon and/or high-grade steel
DE102009052779A1 (en) Method for manufacturing stainless steel-cold strip or other high-alloyed materials, involves cold rolling stainless steel- warm strip in single-stage rolling process
EP0706840A2 (en) Method and device for manufacturing cold rolled stainless steel from hot rolled strip
EP2523774B1 (en) Method and device for in-line surface treatment of slabs
EP2640532B1 (en) Method for producing seamless hot-rolled pipes in continuous pipe rolling mills
DE102010026757A1 (en) Method and production line for producing a cold-rolled steel flat product from a stainless steel
EP1283914B1 (en) Method and device for pickling hot-rolled special steel strips
EP0914878B1 (en) Process and treatment line for producing metal strips having descaled surfaces
EP1525060B1 (en) Method and device for the continuous production of metallic strips
DE4445716C2 (en) Process and production line for producing cold-rolled, stainless steel strip
EP0449004A2 (en) Method and installation for manufacturing hot-rolled steel strip, in particular for special steels from a continuously cast material
DE69932035T2 (en) METHOD FOR TREATING A METAL PRODUCT
EP3206808B1 (en) Installation and method for producing heavy plate
EP0808672A1 (en) Method and installation for manufacturing stainless steel or carbon steel plates from casted thin slabs
DE2913664A1 (en) METHOD FOR MANUFACTURING COLD STRIP
DE102011086807A1 (en) Process for steel treatment and steel treatment plant
EP0178477B1 (en) Method for producing seamless steel tubes with a great diameter
DE10009823A1 (en) Process for coating metallic strips comprises coiling the strip into an endless strip in a winding station, directly subjecting the strip to a main pickling step and a post-pickling step, and then passing through a melt bath
DE1801471C3 (en) Method of making shield pole wire

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20020928

AK Designated contracting states

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

RIN1 Information on inventor provided before grant (corrected)

Inventor name: HAENTJES, MICHAEL

17Q First examination report despatched

Effective date: 20030505

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20040630

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: SE

Ref legal event code: TRGR

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: GERMAN

REF Corresponds to:

Ref document number: 50102747

Country of ref document: DE

Date of ref document: 20040805

Kind code of ref document: P

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20040930

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20040930

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 20041013

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2223866

Country of ref document: ES

Kind code of ref document: T3

REG Reference to a national code

Ref country code: IE

Ref legal event code: FD4D

ET Fr: translation filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20050505

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050531

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050531

Ref country code: MC

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050531

26N No opposition filed

Effective date: 20050331

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: TR

Payment date: 20060327

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20060512

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20060515

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FI

Payment date: 20060516

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: LU

Payment date: 20060517

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20060522

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20060530

Year of fee payment: 6

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20041130

EUG Se: european patent has lapsed
GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20070505

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20070505

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20071201

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 20071201

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20070505

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20070506

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20070507

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20070507

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20070505

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20040630

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 50102747

Country of ref document: DE

Representative=s name: HEMMERICH & KOLLEGEN, DE

Ref country code: DE

Ref legal event code: R081

Ref document number: 50102747

Country of ref document: DE

Owner name: SMS GROUP GMBH, DE

Free format text: FORMER OWNER: SMS SIEMAG AKTIENGESELLSCHAFT, 40237 DUESSELDORF, DE

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 16

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 17

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 18

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20180522

Year of fee payment: 18

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20180530

Year of fee payment: 18

Ref country code: BE

Payment date: 20180518

Year of fee payment: 18

Ref country code: AT

Payment date: 20180522

Year of fee payment: 18

Ref country code: FR

Payment date: 20180522

Year of fee payment: 18

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 50102747

Country of ref document: DE

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 270354

Country of ref document: AT

Kind code of ref document: T

Effective date: 20190505

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190505

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20190531

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190505

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20191203

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190531

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190531