EP0695818A1 - Method and device for electrolytic surface treatment - Google Patents
Method and device for electrolytic surface treatment Download PDFInfo
- Publication number
- EP0695818A1 EP0695818A1 EP95250142A EP95250142A EP0695818A1 EP 0695818 A1 EP0695818 A1 EP 0695818A1 EP 95250142 A EP95250142 A EP 95250142A EP 95250142 A EP95250142 A EP 95250142A EP 0695818 A1 EP0695818 A1 EP 0695818A1
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- European Patent Office
- Prior art keywords
- electrodes
- strip
- electrolyte
- working electrodes
- surface treatment
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- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000004381 surface treatment Methods 0.000 title claims abstract description 10
- 239000003792 electrolyte Substances 0.000 claims abstract description 34
- 239000007788 liquid Substances 0.000 claims abstract description 6
- 238000005554 pickling Methods 0.000 claims abstract description 4
- 239000010960 cold rolled steel Substances 0.000 claims abstract description 3
- 239000002184 metal Substances 0.000 claims abstract description 3
- 238000004140 cleaning Methods 0.000 claims description 2
- 238000005238 degreasing Methods 0.000 claims description 2
- 238000009434 installation Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 description 4
- 238000011109 contamination Methods 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25F—PROCESSES FOR THE ELECTROLYTIC REMOVAL OF MATERIALS FROM OBJECTS; APPARATUS THEREFOR
- C25F1/00—Electrolytic cleaning, degreasing, pickling or descaling
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25F—PROCESSES FOR THE ELECTROLYTIC REMOVAL OF MATERIALS FROM OBJECTS; APPARATUS THEREFOR
- C25F7/00—Constructional parts, or assemblies thereof, of cells for electrolytic removal of material from objects; Servicing or operating
Definitions
- the invention relates to an electrolytic surface treatment method and a device for carrying out the method, in particular for pickling, cleaning and degreasing snow-running metal strips, preferably cold-rolled steel strip, consisting of at least one container holding the electrolyte through which the strip passes horizontally, above and below the Band in the tape running direction electrodes are arranged one behind the other, which are alternately connected anodically or cathodically.
- EP-A-02 35 595 A known system of this type is described in EP-A-02 35 595. It is used to clean tapes and is used in combination with mechanical agents that act on the tape surface.
- the entire electrolytic process is usually carried out in at least one container in which the electrolyte necessary for the electrolytic process and covering the electrodes and also the tape is contained.
- the electrolyte is usually supplied to the container by means of pumps.
- the electrodes arranged above and below the band are generally referred to as working electrodes, to which the band acts as a counter electrode. This process is also known as the middle conductor process. If, as is known, the electrodes on both sides of the tape have the same polarity, then all points on the tape surface, regardless of which side of the tape they are on, have the same polarity. If the working electrodes are all positive (anodic), the strip surface acts as a negative pole (cathode) - or vice versa.
- the invention is based on the object of creating an electrolytic surface treatment method and a system for carrying out the method, with which an effective surface treatment of the strip can be carried out in a short time and with little contamination of the electrolyte can be.
- the areas between two adjacent electrodes of different circuitry and the top and bottom of the strip are kept free of electrolytes, since only such (galvanic) separation avoids a "leakage current" between the working electrodes.
- the invention is based on the idea that if the bridge between the cathode and the anode (the working electrode) formed by the electrolyte can be broken, no or only a small electric current can flow directly from the cathode to the anode. This increases the effectiveness of the system because the entire electrical current is now available for the strip treatment, so that a more effective treatment and thus shorter treatment times can be achieved. If, according to the invention, the areas between the band and the neighboring electrodes are kept free of electrolyte, then no impurities can be transported with the band into the next electrolyte half cell.
- the electrolyte is displaced from the region between two adjacent electrodes.
- the electrolyte is displaced and the area between two laterally adjacent working electrodes is kept clear in a system for carrying out the method in that several nozzle bars arranged between the working electrodes for injecting electrolyte liquid obliquely to the strip surface and in the direction of the respectively adjacent working electrodes are arranged.
- electrolyte liquid By injecting electrolyte liquid under pressure, the in the area between the Working electrodes and the band and the adjacent working electrodes displaced liquid, so that with correct arrangement of the nozzle bars, the space between two nozzle bars remains free of liquid.
- Each pair of electrodes is preferably assigned four nozzle bars, which act in pairs on the top and bottom of the strip.
- the arrangement of the nozzle bars in front of and behind an electrode pack on the one hand seals the affected area in the direction of strip travel, and on the other hand the resulting turbulence between the working electrode and the strip considerably facilitates the current transfer through the electrolyte and thus optimizes the actual treatment step accordingly.
- an overflow is provided above each electrode stack, via which the amount from the nozzle assemblies is fed back to the associated storage container.
- the amount or pressure of the injected electrolyte for guiding the strip relative to the electrodes can be adjusted.
- the injection of the electrolyte provided above and below the band simultaneously guides the band a short distance of, for example, 20 to 60 mm between the band and the electrodes.
- the distance can be varied by changing the amount or pressure of the electrolyte.
- 1 denotes a container through which the band 2 to be treated is passed in the horizontal direction.
- deflection and guide rollers 3 and 4 are indicated, which define the position of the belt in the container.
- 5 and 6 denote 2 working electrodes arranged above and below the strip, which are connected anodically at 5 and at 6 cathodically. As can be seen, anodically switched working electrodes alternate with cathodically connected working electrodes in the longitudinal direction of the strip.
- FIG. 1 shows the solution of the invention, the same parts being labeled the same.
- each working electrode 5, 6 is assigned a nozzle tube, which is arranged at an angle to the working electrode 5, 6 and directed towards the strip surface and is injected by the electrolyte. This will cause the electrolyte in the area of opposite working electrodes 5, 6 are held, while in the band area 9 between the neighboring working electrodes or pairs of working electrodes the band to be treated is almost free of electrolyte on the surface.
- Additional partition walls 10 in the container divide the container 1 into areas so that contamination of the electrolyte is limited to the container area below the respective working electrode package.
- the invention ensures that the areas 9 between the working electrode pairs 8 are kept free of electrolyte, so that short-circuit currents can no longer flow between the cathode and anode of the working electrodes connected in series. This maintains the full electrical effect for treating the tape. In this way, not only can the quality of the surface treatment process be improved, but the treatment speed can also be increased, and the productivity of the system can thus be increased.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electroplating Methods And Accessories (AREA)
Abstract
Die Erfindung betrifft ein Elektrolytisches Oberflächnbehandlungsverfahren, insbesondere zum Beizen von schnell laufenden Metallbändern, vorzugsweise kaltgewalztem Stahlband, bestehend aus mindestens einem den Elktrolyt aufnehmenden Behälter, den das Band horizontal durchläuft, wobei oberhalb und unterhalb des Bandes in Bandlaufrichtung hintereinander Elektroden (sog. Arbeitselektroden) angeordnet sind, die abwechselnd anodisch bzw. kathodisch geschaltet sind. Erfindungsgemäß werden die Bereiche zwischen zwei seitlich benachbarten Elektroden unterschiedlicher Schaltung und der Bandober- und -unterseite elektrolytfrei gehalten. Eine Anlage zur Durchführung des Verfahrens ist gekennzeichnet durch mehrere zwischen den Arbeitselektroden (5, 6) angeordnete Düsenbalken (8) zum Eindüsen von Elektrolytflüssigkeit schräg zur Bandoberfläche und in Richtung der jeweils benachbarten Arbeitselektroden (5, 6). <IMAGE>The invention relates to an electrolytic surface treatment method, in particular for pickling fast-running metal strips, preferably cold-rolled steel strips, consisting of at least one container holding the electrolyte through which the strip traverses horizontally, electrodes (so-called working electrodes) being arranged one behind the other in the strip running direction are, which are alternately connected anodically or cathodically. According to the invention, the areas between two laterally adjacent electrodes of different circuitry and the upper and lower sides of the strip are kept free of electrolytes. A system for carrying out the method is characterized by a plurality of nozzle bars (8) arranged between the working electrodes (5, 6) for injecting electrolyte liquid obliquely to the strip surface and in the direction of the respectively adjacent working electrodes (5, 6). <IMAGE>
Description
Die Erfindung betrifft ein elektrolytisches Oberflächenbehandlungsverfahren und eine Vorrichtung zur Durchführung des Verfahrens, insbesondere zum Beizen, Reinigen und Entfetten von schneit laufenden Metallbändern, vorzugsweise kaltgewalztem Stahlband, bestehend aus mindestens einem den Elektrolyt aufnehmenden Behälter, den das Band horizontal durchläuft, wobei oberhalb und unterhalb des Bandes in Bandlaufrichtung hintereinander Elektroden angeordnet sind, die abwechselnd anodisch bzw. kathodisch geschaltet sind.The invention relates to an electrolytic surface treatment method and a device for carrying out the method, in particular for pickling, cleaning and degreasing snow-running metal strips, preferably cold-rolled steel strip, consisting of at least one container holding the electrolyte through which the strip passes horizontally, above and below the Band in the tape running direction electrodes are arranged one behind the other, which are alternately connected anodically or cathodically.
Eine bekannte Anlage dieser Art ist in der EP-A-02 35 595 beschrieben. Sie wird zum Reinigen von Bändern benutzt und in Kombination mit mechanischen, auf die Bandoberfläche einwirkenden Mitteln eingesetzt.A known system of this type is described in EP-A-02 35 595. It is used to clean tapes and is used in combination with mechanical agents that act on the tape surface.
Der gesamte elektrolytische Prozeß wird gewöhnlich in mindestens einem Behälter durchgeführt, in dem der die Elektroden und auch das Band überdeckende, für das elektrolytische Verfahren notwendige Elektrolyt enthalten ist. Üblicherweise wird der Elektrolyt mittels Pumpen dem Behälter zugeführt.The entire electrolytic process is usually carried out in at least one container in which the electrolyte necessary for the electrolytic process and covering the electrodes and also the tape is contained. The electrolyte is usually supplied to the container by means of pumps.
Die ober- und unterhalb des Bandes angeordneten Elektroden bezeichnet man im allgemeinen als Arbeitselektroden, zu denen das Band als Gegenelektrode fungiert. Dieses Verfahren ist auch als Mittelleiterverfahren bekannt. Wenn, wie bekannt, die Elektroden beider Bandseiten die gleiche Polarität besitzen, so besitzen auch alle Punkte der Bandoberfläche, unabhängig davon, auf welcher Bandseite sie liegen, die gleiche Polarität. Sind die Arbeitselektroden sämtlich positiv (anodisch) geschaltet, so wirkt die Bandoberfläche als negativer Pol (Kathode) - oder umgekehrt.The electrodes arranged above and below the band are generally referred to as working electrodes, to which the band acts as a counter electrode. This process is also known as the middle conductor process. If, as is known, the electrodes on both sides of the tape have the same polarity, then all points on the tape surface, regardless of which side of the tape they are on, have the same polarity. If the working electrodes are all positive (anodic), the strip surface acts as a negative pole (cathode) - or vice versa.
Es hat sich aber gezeigt, daß bei dem bekannten Verfahren und den bekannten Anlagen der Strom nicht nur direkt zum Band fließt, sondern auch durch den Elektrolyten hindurch von einer Arbeitselektrode zur benachbarten. Dadurch geht ein erheblicher Teil des elektrolytischen Stromes (Kirchhofsche Regel) ohne Wirkung für die Behandlung verloren. Ein weiterer Nachteil stellt sich dadurch ein, daß bei mehreren im Wechsel Anode/Kathode/Anode ... nebeneinander angeordneten Elektroden der Elektrolyt gleichmäßig mit dem vom Band zu entfernenden Produkt verunreinigt wird. Eine Elektrolytkaskade kann bei den bekannten Anlagen nicht betrieben werden.However, it has been shown that in the known method and the known systems, the current not only flows directly to the strip, but also through the electrolyte from one working electrode to the adjacent one. As a result, a significant part of the electrolytic current (Kirchhof rule) is lost without effect for the treatment. A further disadvantage arises from the fact that in the case of a plurality of electrodes arranged alternately next to one another, the electrolyte is uniformly contaminated with the product to be removed from the strip. An electrolyte cascade cannot be operated in the known systems.
Der Erfindung liegt, ausgehend von den beschriebenen Problemen und Nachteilen des Standes der Technik, die Aufgabe zugrunde, ein elektrolytisches Oberflächenbehandlungsverfahren und eine Anlage zur Durchführung des Verfahrens zu schaffen, mit der eine wirkungsvolle Oberflächenbehandlung des Bandes in kurzer Zeit und mit geringer Verunreinigung des Elektrolyten durchgeführt werden kann.Based on the described problems and disadvantages of the prior art, the invention is based on the object of creating an electrolytic surface treatment method and a system for carrying out the method, with which an effective surface treatment of the strip can be carried out in a short time and with little contamination of the electrolyte can be.
Zur Lösung der Aufgabe wird erfindungsgemäß vorgeschlagen, daß die Bereiche zwischen zwei benachbarten Elektroden unterschiedlicher Schaltung und der Bandober- und -unterseite elektrolytfrei gehalten werden, da nur eine solche (galvanische) Trennung einen "Verluststrom" zwischen den Arbeitselektroden vermeidet.To achieve the object, it is proposed according to the invention that the areas between two adjacent electrodes of different circuitry and the top and bottom of the strip are kept free of electrolytes, since only such (galvanic) separation avoids a "leakage current" between the working electrodes.
Die Erfindung geht von dem Gedanken aus, daß, wenn es gelingt, die durch den Elektrolyten gebildete Brücke zwischen Kathode und Anode (der Arbeitselektrode) zu unterbrechen, kein oder nur ein geringer elektrischer Strom direkt von Kathode zur Anode fließen kann. Dadurch wird die Effektivität der Anlage gesteigert, weil nunmehr der gesamte elektrische Strom für die Bandbehandlung zur Verfügung steht, so daß eine wirkungsvollere Behandlung und damit kürzere Behandlungszeiten erreichbar werden. Wenn nach der Erfindung die Bereiche zwischen Band und den benachbarten Elektroden von Elektrolyt freigehalten werden, so können auch keine Verunreinigungen mit dem Band in die nächste Elektrolythalbzelle transportiert werden.The invention is based on the idea that if the bridge between the cathode and the anode (the working electrode) formed by the electrolyte can be broken, no or only a small electric current can flow directly from the cathode to the anode. This increases the effectiveness of the system because the entire electrical current is now available for the strip treatment, so that a more effective treatment and thus shorter treatment times can be achieved. If, according to the invention, the areas between the band and the neighboring electrodes are kept free of electrolyte, then no impurities can be transported with the band into the next electrolyte half cell.
Vorzugsweise ist nach einem weiteren Verfahrensmerkmal vorgesehen, daß der Elektrolyt aus dem Bereich zwischen zwei benachbarten Elektroden verdrängt wird.According to a further feature of the method, it is preferably provided that the electrolyte is displaced from the region between two adjacent electrodes.
Das Verdrängen des Elektrolyten und Freihalten des Bereiches zwischen zwei seitlich benachbarten Arbeitselektroden geschieht nach einem weiteren Vorschlag der Erfindung in einer Anlage zur Durchführung des Verfahrens dadurch, daß mehrere zwischen den Arbeitselektroden angeordnete Düsenbalken zum Eindüsen von Elektrolytflüssigkeit schräg zur Bandoberfläche und in Richtung der jeweils benachbarten Arbeitselektroden angeordnet sind. Durch das Eindüsen von Elektrolytflüssigkeit unter Druck wird die im Bereich zwischen den Arbeitselektroden und dem Band und den benachbarten Arbeitselektroden befindliche Flüssigkeit verdrängt, so daß bei richtiger Anordnung der Düsenbalken der Raum zwischen jeweils zwei Düsenbalken von Flüssigkeit frei bleibt.According to a further proposal of the invention, the electrolyte is displaced and the area between two laterally adjacent working electrodes is kept clear in a system for carrying out the method in that several nozzle bars arranged between the working electrodes for injecting electrolyte liquid obliquely to the strip surface and in the direction of the respectively adjacent working electrodes are arranged. By injecting electrolyte liquid under pressure, the in the area between the Working electrodes and the band and the adjacent working electrodes displaced liquid, so that with correct arrangement of the nozzle bars, the space between two nozzle bars remains free of liquid.
Vorzugsweise sind jedem Elektrodenpaar vier Düsenbalken zugeordnet, die jeweils paarweise die Ober- und Unterseite des Bandes beaufschlagen. Durch die Anordnung der Düsenbalken vor und hinter einem Elektrodenpaket wird zum Einen der betroffene Bereich in Bandlaufrichtung abgedichtet, zum Anderen wird durch die entstandene Turbulenz zwischen Arbeitselektrode und Band der Stromübergang durch den Elektrolyten erheblich erleichtert und somit der eigentliche Behandlungsschritt entsprechend optimiert. Um der eingedüsten Elektrolytmenge ein Entweichen zu ermöglichen, ist oberhalb eines jeden Elektrodenpaketes ein überlauf vorgesehen, über den die Menge aus den Düsenstöcken wieder dem zugeordneten Vorlagebehälter zugeführt wird.Each pair of electrodes is preferably assigned four nozzle bars, which act in pairs on the top and bottom of the strip. The arrangement of the nozzle bars in front of and behind an electrode pack on the one hand seals the affected area in the direction of strip travel, and on the other hand the resulting turbulence between the working electrode and the strip considerably facilitates the current transfer through the electrolyte and thus optimizes the actual treatment step accordingly. In order to allow the amount of electrolyte injected to escape, an overflow is provided above each electrode stack, via which the amount from the nozzle assemblies is fed back to the associated storage container.
Nach einem weiteren Merkmal der Erfindung wird vorgeschlagen, daß Menge bzw. Druck des eingedüsten Elektrolyts zur Führung des Bandes gegenüber den Elektroden einstellbar sind. Die oberhalb und unterhalb des Bandes vorgesehene Eindüsung des Elektrolyten führt das Band gleichzeitig in einen geringen Abstand von beispielsweise 20 bis 60 mm zwischen Band und Elektroden. Der Abstand ist durch Veränderung von Menge bzw. Druck des Elektrolyten variabel.According to a further feature of the invention, it is proposed that the amount or pressure of the injected electrolyte for guiding the strip relative to the electrodes can be adjusted. The injection of the electrolyte provided above and below the band simultaneously guides the band a short distance of, for example, 20 to 60 mm between the band and the electrodes. The distance can be varied by changing the amount or pressure of the electrolyte.
Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung schematisch dargestellt und wird nachfolgend beschrieben. Es zeigt:
- Fig. 1
- eine Anlage nach der Erfindung und
- Fig. 2
- grob vereinfacht eine elektrolytische Oberflächenbehandlungsanlage nach dem Stand der Technik.
- Fig. 1
- a system according to the invention and
- Fig. 2
- roughly simplified an electrolytic surface treatment system according to the prior art.
In Figur 2 ist mit 1 ein Behälter bezeichnet, durch den das zu behandelnde Band 2 in horizontaler Richtung geführt wird. Am Einlauf und Auslauf des Behälters 1 sind Umlenk- und Führungsrollen 3 und 4 angedeutet, die die Lage des Bandes im Behälter definieren. Mit 5 und 6 sind jeweils oberhalb und unterhalb des Bandes 2 angeordnete Arbeitselektroden bezeichnet, die bei 5 anodisch und bei 6 kathodisch geschaltet sind. Wie erkennbar, wechseln in Bandlängsrichtung jeweils anodisch geschaltete Arbeitselektroden mit kathodisch geschalteten Arbeitselfktroden ab.In FIG. 2, 1 denotes a container through which the
Bei 7 ist angedeutet, daß es zu Kurzschlußströmen zwischen benachbarten Kathoden und Anoden kommen kann, wobei der Elektrolyt als Brücke wirkt. Diese Kurzschlußströme beschränken die Leistung des Behandlungsverfahrens; denn die Ströme sollen, um ihre volle Wirkung entfalten zu können möglichst nur zwischen Arbeitselektrode und Band fließen.At 7 it is indicated that short-circuit currents can occur between adjacent cathodes and anodes, the electrolyte acting as a bridge. These short circuit currents limit the performance of the treatment process; because, in order to be able to develop their full effect, the currents should only flow between the working electrode and the strip.
Figur 1 zeigt die Lösung der Erfindung, wobei gleiche Teile gleich bezeichnet sind. Wie bei 8 erkennbar, ist jeder Arbeitselektrode 5, 6 ein Düsenrohr zugeordnet, das schräg zur Arbeitselektrode 5, 6 hin und auf die Bandoberfläche gerichtet geneigt angeordnet ist und durch das Elektrolyt eingedüst wird. Dadurch wird der Elektrolyt im Bereich der jeweils sich gegenüberliegenden Arbeitselektroden 5, 6 gehalten, während im Bandbereich 9 zwischen den benachbarten Arbeitselektroden bzw. Arbeitselektrodenpaaren das zu behandelnde Band nahezu frei von Elektrolyt an der Oberfläche ist. Zusätzliche Trennwände 10 im Behälter unterteilen den Behälter 1 in Bereiche, so daß eine Verschmutzung des Elektrolyten auf den Behälterbereich unterhalb des jeweiligen Arbeitselektrodenpaketes beschränkt bleibt. Dadurch werden die auslaufseitigen Behälterbereiche, bei denen nicht mehr so viele Partikel vom Band abgetragen werden, sauberer gehalten, so daß eine bessere Wirkung der Oberflächenbehandlung erzielbar ist. Es stellt sich somit im Hinblick auf die Inhaltsstoffe eine Kaskade ein, welche die darauffolgende Behandlung der Abläufe aus dieser Beize entsprechend vereinfacht, da die zu trennenden Schlämme etc. schon entsprechend aufkonzentriert vorliegen.FIG. 1 shows the solution of the invention, the same parts being labeled the same. As can be seen in FIG. 8, each working
Durch die Erfindung wird sichergestellt, daß die Bereiche 9 zwischen den Arbeitselektrodenpaaren 8 frei von Elektrolyt gehalten werden, so daß keine Kurzschlußströme mehr zwischen Kathode und Anode der hintereinandergeschalteten Arbeitselektroden fließen können. Dadurch bleibt die volle elektrische Wirkung zur Behandlung des Bandes erhalten. Auf diese Weise laßt sich nicht nur die Qualität des Oberflächenbehandlungsverfahrens verbessern, es kann auch die Behandlungsgeschwindigkeit erhöht werden und somit die Produktivität der Anlage gesteigert werden.The invention ensures that the
Claims (5)
dadurch gekennzeichnet,
daß die Bereiche zwischen zwei seitlich benachbarten Elektroden unterschiedlicher Schaltung und der Bandober- und -unterseite elektrolytfrei gehalten werden.Electrolytic surface treatment method, in particular for pickling, cleaning and degreasing fast-running metal strips, preferably cold-rolled steel strip, consisting of at least one container holding the electrolyte through which the strip traverses horizontally, electrodes being arranged one behind the other in the strip running direction, with the electrodes in the longitudinal direction of the strip alternate anodically connected electrodes and carnodically connected electrodes,
characterized,
that the areas between two laterally adjacent electrodes of different circuitry and the top and bottom of the band are kept free of electrolytes.
dadurch gekennzeichnet,
daß der Elektrolyt aus den Bereichen verdrängt wird.Electrolytic surface treatment method according to claim 1,
characterized,
that the electrolyte is displaced from the areas.
gekennzeichnet durch
mehrere zwischen den Arbeitselektroden (5, 6) angeordnete Düsenbalken (8) zum Eindüsen von Elektrolytflüssigkeit schräg zur Bandoberfläche und in Richtung der jeweils benachbarten Arbeitselektroden (5, 6).Installation for carrying out the method according to claim 1,
marked by
a plurality of nozzle bars (8) arranged between the working electrodes (5, 6) for injecting electrolyte liquid obliquely to the strip surface and in the direction of the respectively adjacent working electrodes (5, 6).
dadurch gekennzeichnet,
daß jedem Arbeitselektrodenpaar (5, 6) vier Düsenbalken (8) zugeordnet sind, die jeweils paarweise die Ober- und Unterseite des Bandes (2) beaufschlagen.System according to claim 1,
characterized,
that each working electrode pair (5, 6) four nozzle bars (8) are assigned, each of which act in pairs on the top and bottom of the belt (2).
dadurch gekennzeichnet,
daß Menge und/oder Druck des eingedüsten Elektrolyts zur Führung des Bandes (2) gegenüber den Arbeitselektroden (5, 6) einstellbar sind.System according to claims 3 and 4,
characterized,
that the amount and / or pressure of the injected electrolyte for guiding the strip (2) relative to the working electrodes (5, 6) are adjustable.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4425854A DE4425854C1 (en) | 1994-07-07 | 1994-07-07 | Electrolytic surface treatment process and plant for carrying out the process |
| DE4425854 | 1994-07-07 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0695818A1 true EP0695818A1 (en) | 1996-02-07 |
| EP0695818B1 EP0695818B1 (en) | 1998-04-08 |
Family
ID=6523791
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP95250142A Expired - Lifetime EP0695818B1 (en) | 1994-07-07 | 1995-06-14 | Method and device for electrolytic surface treatment |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US5584984A (en) |
| EP (1) | EP0695818B1 (en) |
| JP (1) | JP3813998B2 (en) |
| DE (2) | DE4425854C1 (en) |
| FI (1) | FI110367B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7045053B2 (en) | 2000-09-22 | 2006-05-16 | Danieli & C.Officine Meccaniche S.P.A. | Process and apparatus for the superficial electrolytic treatment of metal strips |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5660708A (en) * | 1994-11-21 | 1997-08-26 | Sumitomo Metal Mining Company, Limited | Process for manufacturing a lead frame |
| DE19702639C1 (en) * | 1997-01-25 | 1998-06-18 | Sundwiger Eisen Maschinen | Continuous chemical descaling of metal strip |
| JP2000064100A (en) | 1998-08-24 | 2000-02-29 | Hitachi Ltd | Steel strip descaling device and steel strip manufacturing device |
| US6203691B1 (en) | 1998-09-18 | 2001-03-20 | Hoffman Industries International, Ltd. | Electrolytic cleaning of conductive bodies |
| US6265020B1 (en) * | 1999-09-01 | 2001-07-24 | Shipley Company, L.L.C. | Fluid delivery systems for electronic device manufacture |
| DE102004029894B3 (en) * | 2004-06-17 | 2005-12-22 | Atotech Deutschland Gmbh | Apparatus and method for the electrolytic treatment of electrically mutually insulated, electrically conductive structures on surfaces of flat material to be treated |
| AT413707B (en) * | 2004-07-19 | 2006-05-15 | Voest Alpine Ind Anlagen | METHOD AND DEVICE FOR METALING |
| ITMI20130497A1 (en) * | 2013-03-29 | 2014-09-30 | Tenova Spa | EQUIPMENT FOR THE CONTINUOUS SURFACE ELECTROLYTIC TREATMENT OF METALLIC SEMI-FINISHED PRODUCTS, IN PARTICULAR FLAT METALLIC SEMI-FINISHED PRODUCTS. |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3926767A (en) * | 1975-01-21 | 1975-12-16 | United States Steel Corp | Electrolytic treating apparatus |
| EP0235595A2 (en) | 1986-03-01 | 1987-09-09 | Hoesch Stahl Aktiengesellschaft | Process, installation and apparatus for continuously degreasing and cleaning metal strips, in particular cold-rolled steel strips |
| WO1992006231A2 (en) * | 1990-10-08 | 1992-04-16 | Le Four Industriel Belge S.A. | Method and device for pickling, and method and installation for galvanizing |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2165326A (en) * | 1934-10-30 | 1939-07-11 | Hanson Van Winkle Munning Co | Electrolytic treatment of ferrous metals |
| US3558460A (en) * | 1966-01-26 | 1971-01-26 | Nippon Steel Corp | Process for surface treatment of steel strip |
| CH594067A5 (en) * | 1973-10-04 | 1977-12-30 | Galentan Ag | |
| JPS5594492A (en) * | 1979-01-12 | 1980-07-17 | Nippon Kokan Kk <Nkk> | Fluidizing method for liquid by jet stream between parallel flat board |
| GB2147009B (en) * | 1983-09-07 | 1987-11-18 | Sumitomo Metal Ind | Method and apparatus for continuous electroplating of alloys |
-
1994
- 1994-07-07 DE DE4425854A patent/DE4425854C1/en not_active Expired - Fee Related
-
1995
- 1995-06-14 EP EP95250142A patent/EP0695818B1/en not_active Expired - Lifetime
- 1995-06-14 DE DE59501827T patent/DE59501827D1/en not_active Expired - Lifetime
- 1995-07-05 JP JP19251795A patent/JP3813998B2/en not_active Expired - Fee Related
- 1995-07-05 FI FI953316A patent/FI110367B/en not_active IP Right Cessation
- 1995-07-07 US US08/499,429 patent/US5584984A/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3926767A (en) * | 1975-01-21 | 1975-12-16 | United States Steel Corp | Electrolytic treating apparatus |
| EP0235595A2 (en) | 1986-03-01 | 1987-09-09 | Hoesch Stahl Aktiengesellschaft | Process, installation and apparatus for continuously degreasing and cleaning metal strips, in particular cold-rolled steel strips |
| WO1992006231A2 (en) * | 1990-10-08 | 1992-04-16 | Le Four Industriel Belge S.A. | Method and device for pickling, and method and installation for galvanizing |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7045053B2 (en) | 2000-09-22 | 2006-05-16 | Danieli & C.Officine Meccaniche S.P.A. | Process and apparatus for the superficial electrolytic treatment of metal strips |
Also Published As
| Publication number | Publication date |
|---|---|
| FI953316L (en) | 1996-01-08 |
| FI953316A0 (en) | 1995-07-05 |
| FI110367B (en) | 2002-12-31 |
| JP3813998B2 (en) | 2006-08-23 |
| US5584984A (en) | 1996-12-17 |
| JPH08100299A (en) | 1996-04-16 |
| DE59501827D1 (en) | 1998-05-14 |
| EP0695818B1 (en) | 1998-04-08 |
| DE4425854C1 (en) | 1995-11-09 |
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