EP0695818B1 - Method and device for electrolytic surface treatment - Google Patents
Method and device for electrolytic surface treatment Download PDFInfo
- Publication number
- EP0695818B1 EP0695818B1 EP95250142A EP95250142A EP0695818B1 EP 0695818 B1 EP0695818 B1 EP 0695818B1 EP 95250142 A EP95250142 A EP 95250142A EP 95250142 A EP95250142 A EP 95250142A EP 0695818 B1 EP0695818 B1 EP 0695818B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- strip
- electrolyte
- electrodes
- working electrodes
- surface treatment
- 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.)
- Expired - Lifetime
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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 it out of the method, in particular for pickling, cleaning and degreasing fast-running metal strips, preferably cold-rolled steel strips, consisting of at least one container holding the electrolyte, the the tape runs horizontally, with above and below the tape electrodes are arranged one behind the other in the tape running direction are alternately connected anodically or cathodically.
- fast-running metal strips preferably cold-rolled steel strips, consisting of at least one container holding the electrolyte, the the tape runs horizontally, with above and below the tape electrodes are arranged one behind the other in the tape running direction 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 in combination with mechanical agents acting on the belt surface.
- the entire electrolytic process is usually carried out in at least one Carried out in which the electrodes and also the tape covering electrolyte necessary for the electrolytic process is included.
- the electrolyte is usually pumped to the Container fed.
- the electrodes located above and below the band are designated one generally as working electrodes, to which the tape as Counter electrode acts. This procedure is also called Medium conductor method known. If, as is known, the electrodes of both All sides of the tape have the same polarity the belt surface, regardless of which side of the belt they are on, the same polarity. Are the working electrodes all positive (anodically) switched, the strip surface acts as a negative pole (Cathode) - or vice versa.
- the invention is based on the problems described and Disadvantages of the prior art, based on the task electrolytic surface treatment method and a plant for Implementation of the procedure to create an effective Surface treatment of the tape in a short time and with less Contamination of the electrolyte can be carried out.
- the invention proposes that the Areas between two neighboring electrodes are different Circuit and the top and bottom of the tape kept electrolyte-free because only such (galvanic) isolation can cause a "leakage current" between the working electrodes.
- the invention is based on the idea that, if successful, the through the electrolyte formed bridge between cathode and anode (the Working electrode) to interrupt, little or no electrical current can flow directly from the cathode to the anode. Thereby the effectiveness of the system is increased because now the entire electrical current is available for the strip treatment, so that a more effective treatment and therefore shorter treatment times can be reached. If, according to the invention, the areas between band and the neighboring electrodes are kept free of electrolyte, so can also no contamination with the tape in the next Electrolyte half cell are transported.
- the electrolyte from the area between two neighboring electrodes is ousted.
- Each pair of electrodes is preferably assigned four nozzle bars, which Apply the top and bottom of the belt in pairs.
- the arrangement of the nozzle bars in front of and behind you Electrode package becomes the affected area in Tape running direction sealed, on the other hand is created by the Turbulence between the working electrode and the band passing through the current the electrolyte considerably easier and thus the actual one Treatment step optimized accordingly.
- To get injected To allow an amount of electrolyte to escape is above each Electrode package provided an overflow over which the amount from the Nozzle sticks is fed back to the assigned reservoir.
- quantity or pressure of the injected electrolyte to guide the tape are adjustable relative to the electrodes.
- the above and below Injection of the electrolyte provided for the strip guides the strip at the same time at a short distance of, for example, 20 to 60 mm between tape and electrodes. The distance is changed by Amount or pressure of the electrolyte variable.
- 1 denotes a container through which to treating band 2 is guided in the horizontal direction.
- deflection and guide rollers 3 and 4 indicated that define the position of the tape in the container.
- 5 and 6 are arranged above and below the band 2 Working electrodes called, anodic at 5 and cathodic at 6 are switched. As can be seen, each change in the longitudinal direction of the strip anodically connected working electrodes with cathodically connected Working electrodes.
- FIG. 1 shows the solution of the invention, the same parts being the same are designated.
- each working electrode is 5, 6 assigned a nozzle tube, which is inclined towards the working electrode 5, 6 and is arranged inclined towards the surface of the tape and by the Electrolyte is injected. This will cause the electrolyte in the area of each opposite working electrodes 5, 6 held while in the band area 9 between the adjacent working electrodes or Working electrode pairs the band to be treated almost free of Electrolyte is on the surface.
- Additional partitions 10 in the container divide the container 1 into areas so that contamination of the Electrolytes on the container area below each Working electrode package remains limited.
- the invention ensures that the areas 9 between the Working electrode pairs 8 are kept free of electrolyte, so that no short-circuit currents between the cathode and the anode series-connected working electrodes can flow. Thereby the full electrical effect for treating the tape is retained. This way not only the quality of the Improve surface treatment process, it can also Treatment speed can be increased and thus the productivity of the Plant can 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)
Description
Die Erfindung betrifft ein elektrolytisches Oberflächenbehandlungsverfahren und eine Vorrichtung zur Durchführung des Verfahrens, insbesondere zum Beizen, Reinigen und Entfetten von schnell 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 it out of the method, in particular for pickling, cleaning and degreasing fast-running metal strips, preferably cold-rolled steel strips, consisting of at least one container holding the electrolyte, the the tape runs horizontally, with above and below the tape electrodes are arranged one behind the other in the tape running direction 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 in combination with mechanical agents acting on the belt 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 Carried out in which the electrodes and also the tape covering electrolyte necessary for the electrolytic process is included. The electrolyte is usually pumped to the Container fed.
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 located above and below the band are designated one generally as working electrodes, to which the tape as Counter electrode acts. This procedure is also called Medium conductor method known. If, as is known, the electrodes of both All sides of the tape have the same polarity the belt surface, regardless of which side of the belt they are on, the same polarity. Are the working electrodes all positive (anodically) switched, 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 known systems the electricity not only flows directly to the belt, but also also through the electrolyte from a working electrode to neighboring. This is a significant part of the electrolytic process Stromes (Kirchhof rule) lost with no effect for the treatment. Another disadvantage arises from the fact that in several Change anode / cathode / anode ... electrodes arranged side by side the electrolyte is even with the product to be removed from the belt is contaminated. An electrolyte cascade can be used in the known systems not be operated.
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. The invention is based on the problems described and Disadvantages of the prior art, based on the task electrolytic surface treatment method and a plant for Implementation of the procedure to create an effective Surface treatment of the tape in a short time and with less Contamination of the electrolyte can be carried out.
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 solve the problem, the invention proposes that the Areas between two neighboring electrodes are different Circuit and the top and bottom of the tape kept electrolyte-free because only such (galvanic) isolation can cause 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 successful, the through the electrolyte formed bridge between cathode and anode (the Working electrode) to interrupt, little or no electrical current can flow directly from the cathode to the anode. Thereby the effectiveness of the system is increased because now the entire electrical current is available for the strip treatment, so that a more effective treatment and therefore shorter treatment times can be reached. If, according to the invention, the areas between band and the neighboring electrodes are kept free of electrolyte, so can also no contamination with the tape in the next Electrolyte half cell are transported.
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 from the area between two neighboring electrodes is ousted.
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.Displacing the electrolyte and keeping the area between two laterally adjacent working electrodes happen after one Another proposal of the invention in a system for performing the Process in that several between the working electrodes arranged nozzle bars for the injection of electrolyte liquid at an angle to the belt surface and in the direction of the neighboring one Working electrodes are arranged. By injecting Electrolyte fluid under pressure is in the area between the Working electrodes and the tape and the neighboring working electrodes displaced liquid, so that with the correct arrangement of the Nozzle bar The space between two nozzle bars of liquid remains free.
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 Apply the top and bottom of the belt in pairs. The arrangement of the nozzle bars in front of and behind you Electrode package becomes the affected area in Tape running direction sealed, on the other hand is created by the Turbulence between the working electrode and the band passing through the current the electrolyte considerably easier and thus the actual one Treatment step optimized accordingly. To get injected To allow an amount of electrolyte to escape is above each Electrode package provided an overflow over which the amount from the Nozzle sticks is fed back to the assigned reservoir.
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 quantity or pressure of the injected electrolyte to guide the tape are adjustable relative to the electrodes. The above and below Injection of the electrolyte provided for the strip guides the strip at the same time at a short distance of, for example, 20 to 60 mm between tape and electrodes. The distance is changed by Amount or pressure of the electrolyte variable.
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 Figure 2, 1 denotes a container through which to
treating
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 there are short-circuit currents between adjacent Cathodes and anodes can come, with the electrolyte acting as a bridge. These short circuit currents limit the performance of the Treatment process; because the currents are supposed to be their full effect To be able to unfold only between the working electrode and the belt flow.
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.Figure 1 shows the solution of the invention, the same parts being the same
are designated. As can be seen at 8, each working electrode is 5, 6
assigned a nozzle tube, which is inclined towards the 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 läßt 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)
- An electrolytic surface treatment method, in particular for pickling, cleaning and degreasing rapidly-travelling metal strips, preferably cold-rolled steel strip, consisting of at least one container holding the electrolyte, through which the strip passes horizontally, with electrodes being arranged in series above and below the strip in the direction of travel of the strip, with anodically connected electrodes and cathodically connected electrodes alternating in the longitudinal direction of the strip,
characterised in that the regions between two laterally adjacent electrodes of different connection types and the upper and lower sides of the strip are kept free of electrolyte. - An electrolytic surface treatment method according to Claim 1, characterised in that the electrolyte is expelled from the regions.
- An installation for performing the method according to Claim 1, characterised by a plurality of nozzle bars (8) arranged between the working electrodes (5, 6) for spraying in electrolyte liquid obliquely to the strip surface and in the direction of the respective adjacent working electrodes (5, 6).
- An installation according to Claim 3,
characterised in that four nozzle bars (8) are associated with each pair of working electrodes (5, 6), which bars each act on the upper and lower side of the strip (2) in pairs. - An installation according to Claims 3 and 4, characterised in that the quantity and/or pressure of the electrolyte sprayed in are adjustable to guide the strip (2) relative to the working electrodes (5, 6).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4425854 | 1994-07-07 | ||
| DE4425854A DE4425854C1 (en) | 1994-07-07 | 1994-07-07 | Electrolytic surface treatment process and plant for carrying out the process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0695818A1 EP0695818A1 (en) | 1996-02-07 |
| EP0695818B1 true 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) |
Families Citing this family (9)
| 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 | Descaling apparatus for steel strip and apparatus for producing steel strip |
| 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 |
| IT1318919B1 (en) * | 2000-09-22 | 2003-09-19 | Danieli Hi Tech Gmbh | PROCESS AND DEVICE FOR SURFACE ELECTROLYTIC TREATMENT OF METAL TAPES. |
| 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. |
Family Cites Families (8)
| 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 | |
| AR204283A1 (en) * | 1975-01-21 | 1975-12-10 | Uss Eng & Consult | APPARATUS FOR THE ELECTROLYTIC TREATMENT OF METAL STRIPS |
| JPS5594492A (en) * | 1979-01-12 | 1980-07-17 | Nippon Kokan Kk <Nkk> | Fluidizing method for liquid by jet stream between parallel flat board |
| US4601794A (en) * | 1983-09-07 | 1986-07-22 | Sumitomo Metal Industries, Ltd. | Method and apparatus for continuous electroplating of alloys |
| DE3606750A1 (en) * | 1986-03-01 | 1987-09-03 | Hoesch Stahl Ag | METHOD, SYSTEM AND DEVICE FOR CONTINUOUSLY DEGREASING AND CLEANING THE SURFACE OF METAL BANDS, ESPECIALLY COLD ROLLED TAPE STEEL |
| BE1005217A3 (en) * | 1990-10-08 | 1993-06-01 | Four Industriel Belge | Method and apparatus for degreasing pickling and son or metal bands or similar items. |
-
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
Also Published As
| Publication number | Publication date |
|---|---|
| US5584984A (en) | 1996-12-17 |
| EP0695818A1 (en) | 1996-02-07 |
| DE59501827D1 (en) | 1998-05-14 |
| JPH08100299A (en) | 1996-04-16 |
| JP3813998B2 (en) | 2006-08-23 |
| DE4425854C1 (en) | 1995-11-09 |
| FI953316A (en) | 1996-01-08 |
| FI953316A0 (en) | 1995-07-05 |
| FI110367B (en) | 2002-12-31 |
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