EP0695818B1 - Procédé et dispositif pour traitement de surface électrolytique - Google Patents
Procédé et dispositif pour traitement de surface électrolytique 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
Links
- 238000000034 method Methods 0.000 title claims description 19
- 238000004381 surface treatment Methods 0.000 title claims description 9
- 239000003792 electrolyte Substances 0.000 claims description 30
- 239000007788 liquid Substances 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 claims description 2
- 239000010960 cold rolled steel Substances 0.000 claims description 2
- 238000005238 degreasing Methods 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 238000005554 pickling Methods 0.000 claims description 2
- 238000009434 installation Methods 0.000 claims 3
- 238000005507 spraying Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 description 4
- 238000011109 contamination Methods 0.000 description 3
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Images
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.
Landscapes
- 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)
Claims (5)
- Procédé de traitement de surface électrolytique - particulièrement pour décaper, nettoyer et dégraisser des feuillards métalliques, de préférence de l'acier laminé à froid, avançant rapidement - consistant en au moins une cuve, qui vient prendre l'électrolyte, que le feuillard parcourt horizontalement, dans laquelle des électrodes sont disposées l'une à la suite de l'autre au-dessus et au-dessous du feuillard dans son sens de progression, et dans laquelle des électrodes respectivement connectées anodiquement et cathodiquement alternent dans le sens longitudinal du feuillard,
caractérisé en ce que,
les zones entre deux électrodes latéralement voisines de connexion différente ainsi que les côtés supérieur et inférieur du feuillard sont maintenus exemptes d'électrolyte. - Procédé de traitement de surface électrolytique selon la revendication 1,
caractérisé en ce que,
l'électrolyte est chassé des zones. - Installation pour mettre en oeuvre le procédé selon la revendication 1,
caractérisée en ce que,
plusieurs bras de tuyaux à buses (8) sont disposés entre les électrodes de travail (5, 6), pour injecter du liquide électrolytique obliquement à la surface du feuillard et dans le sens des électrodes de travail (5, 6) respectivement voisines. - Installation selon la revendication 3,
caractérisée en ce que,
quatre bras de tuyaux à buses (8), qui alimentent respectivement par paires le côté inférieur et le côté supérieur du feuillard (2), sont associés à chaque paire d'électrodes de travail (5, 6). - Installation selon les revendications 3 et 4,
caractérisée en ce que,
la quantité et/ou la pression de l'électrolyte injecté, intervenant dans le contrôle du feuillard (2) par rapport aux électrodes de travail (5, 6), sont réglables.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4425854A DE4425854C1 (de) | 1994-07-07 | 1994-07-07 | Elektrolytisches Oberflächenbehandlungsverfahren und Anlage zur Durchführung des Verfahrens |
DE4425854 | 1994-07-07 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0695818A1 EP0695818A1 (fr) | 1996-02-07 |
EP0695818B1 true EP0695818B1 (fr) | 1998-04-08 |
Family
ID=6523791
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95250142A Expired - Lifetime EP0695818B1 (fr) | 1994-07-07 | 1995-06-14 | Procédé et dispositif pour traitement de surface électrolytique |
Country Status (5)
Country | Link |
---|---|
US (1) | US5584984A (fr) |
EP (1) | EP0695818B1 (fr) |
JP (1) | JP3813998B2 (fr) |
DE (2) | DE4425854C1 (fr) |
FI (1) | FI110367B (fr) |
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 (de) * | 1997-01-25 | 1998-06-18 | Sundwiger Eisen Maschinen | Vorrichtung und Verfahren zum kontinuierlichen chemischen Entzundern von Metallband |
JP2000064100A (ja) | 1998-08-24 | 2000-02-29 | Hitachi Ltd | 鋼帯の脱スケ−ル装置及び鋼帯の製造装置 |
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 (it) | 2000-09-22 | 2003-09-19 | Danieli Hi Tech Gmbh | Processo e dispositivo per il trattamento elettrolitico superficialedi nastri di metallo. |
DE102004029894B3 (de) * | 2004-06-17 | 2005-12-22 | Atotech Deutschland Gmbh | Vorrichtung und Verfahren zum elektrolytischen Behandeln von elektrisch gegeneinander isolierten, elektrisch leitfähigen Strukturen auf Oberflächen von flachem Behandlungsgut |
AT413707B (de) * | 2004-07-19 | 2006-05-15 | Voest Alpine Ind Anlagen | Verfahren und vorrichtung zum beizen von metallen |
ITMI20130497A1 (it) * | 2013-03-29 | 2014-09-30 | Tenova Spa | Apparato per il trattamento elettrolitico superficiale in continuo di semilavorati metallici, in particolare semilavorati metallici piatti. |
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 (fr) * | 1973-10-04 | 1977-12-30 | Galentan Ag | |
AR204283A1 (es) * | 1975-01-21 | 1975-12-10 | Uss Eng & Consult | Aparato para el tratamiento electrolitico de tiras de metal |
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 (de) * | 1986-03-01 | 1987-09-03 | Hoesch Stahl Ag | Verfahren, anlage und vorrichtung zum kontinuierlichen entfetten und reinigen der oberflaeche von metallbaendern, insbesondere kaltgewalztem bandstahl |
BE1005217A3 (fr) * | 1990-10-08 | 1993-06-01 | Four Industriel Belge | Procede et dispositif de degraissage et de decapage de fils ou rubans metalliques ou d'elements analogues. |
-
1994
- 1994-07-07 DE DE4425854A patent/DE4425854C1/de not_active Expired - Fee Related
-
1995
- 1995-06-14 EP EP95250142A patent/EP0695818B1/fr not_active Expired - Lifetime
- 1995-06-14 DE DE59501827T patent/DE59501827D1/de not_active Expired - Lifetime
- 1995-07-05 FI FI953316A patent/FI110367B/fi not_active IP Right Cessation
- 1995-07-05 JP JP19251795A patent/JP3813998B2/ja not_active Expired - Fee Related
- 1995-07-07 US US08/499,429 patent/US5584984A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
FI953316A0 (fi) | 1995-07-05 |
JP3813998B2 (ja) | 2006-08-23 |
JPH08100299A (ja) | 1996-04-16 |
DE4425854C1 (de) | 1995-11-09 |
EP0695818A1 (fr) | 1996-02-07 |
DE59501827D1 (de) | 1998-05-14 |
FI953316A (fi) | 1996-01-08 |
FI110367B (fi) | 2002-12-31 |
US5584984A (en) | 1996-12-17 |
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