EP0875605A2 - Anordnung zur elektrogalvanischen Metallbeschichtung von Bändern - Google Patents
Anordnung zur elektrogalvanischen Metallbeschichtung von Bändern Download PDFInfo
- Publication number
- EP0875605A2 EP0875605A2 EP98107344A EP98107344A EP0875605A2 EP 0875605 A2 EP0875605 A2 EP 0875605A2 EP 98107344 A EP98107344 A EP 98107344A EP 98107344 A EP98107344 A EP 98107344A EP 0875605 A2 EP0875605 A2 EP 0875605A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- anode
- strips
- strip
- arrangement
- metal coating
- 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
Links
- 238000000576 coating method Methods 0.000 title claims abstract description 34
- 239000011248 coating agent Substances 0.000 title claims abstract description 33
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 27
- 239000002184 metal Substances 0.000 title claims abstract description 27
- 239000003792 electrolyte Substances 0.000 claims abstract description 18
- 239000011810 insulating material Substances 0.000 claims description 5
- 230000002378 acidificating effect Effects 0.000 claims description 3
- 239000002253 acid Substances 0.000 abstract 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 12
- 229910052725 zinc Inorganic materials 0.000 description 12
- 239000011701 zinc Substances 0.000 description 12
- 239000010410 layer Substances 0.000 description 11
- 238000010586 diagram Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000000151 deposition Methods 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005246 galvanizing Methods 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000011241 protective layer Substances 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000007688 edging Methods 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000001465 metallisation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000009528 severe injury Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D7/00—Electroplating characterised by the article coated
- C25D7/06—Wires; Strips; Foils
- C25D7/0614—Strips or foils
- C25D7/0642—Anodes
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D7/00—Electroplating characterised by the article coated
- C25D7/06—Wires; Strips; Foils
- C25D7/0614—Strips or foils
- C25D7/0692—Regulating the thickness of the coating
Definitions
- the invention relates to an arrangement for electro-galvanic Metal coating of strips by a metal enriched acidic electrolytes run with at least one insoluble anode arranged parallel to the tape, from which the current flows to the band connected as cathode, whereby Metal deposited from the electrolyte on the surface of the tape becomes.
- Cold-rolled strip made of normal carbon steel must have a Protective layer can be provided to prevent corrosion or at least to slow it down a lot.
- the type of protective layer depends on the intended use and the economic reasonable effort.
- the state of the art includes a. the galvanizing.
- the galvanizing can be protected by a metallic Coating can be achieved, which is applied electrolytically.
- Plants for one or two-sided application of such zinc layers in thicknesses of about 2.5 - 15 micrometers are from the State of the art known.
- the anodes are parallel to the band at the smallest possible distance between 5 and 30 mm arranged.
- the space between each anode and the strip is with an acidic electrolyte enriched with metal (zinc) filled.
- the current flows from the Anodes to the band connected as cathode, on the Surface the zinc is deposited.
- the belt should only be on one side further problems arise.
- a dummy anode e.g. a plastic plate
- the anode is only on the side not to be coated electrically switched off, it also happens that metal is deposited on the strip side that is not to be coated becomes.
- the reason for this is that of the wider anodes compared to the strip outside the strip area Current through the electrolyte to the switched off anode passes over and thus under tension towards the tape puts.
- edge masks are already used to counter these problems become known in the form of electrically insulating Plates or foils the flow of electricity between the two Prevent anodes next to the tape.
- the band edges encompass the front of the electrical insulating profiles arranged U-profiles. From the immersion depth of the strip edges in the U-profiles depends on the measure of the edge joint from. It is therefore necessary to use the U-profiles Always track the belt exactly. This requires a tape edge position measurement and complex edge mask drives with complicated measurement and control technology.
- edge masks Another disadvantage of edge masks is their susceptibility to interference. For example, not smooth band edges or sudden fluctuations in the width of the belt can occur damage the edge masks. Expensive downtimes and repairs are the consequence.
- edge masks require a minimum distance between the anodes in order to execute them with sufficient stability can.
- edge masks do not solve the problem that the coating thickness across the width of the tape is a direct one Image of the cross section of the belt is. Show the tape for example, a crossbow or other flatness or Angled positions between the anodes results in one uneven coating thickness. To this unwanted The coating processes are used to avoid the effect upstream of the prior art expensive straightening systems.
- the invention is based on this prior art based on the task of an arrangement for electro-galvanic To create a metal coating of the type mentioned at the outset, the edge growth of the deposited metal safely prevented and at the same time having the disadvantages of the arrangements Avoid edge masks.
- a uniform Metal coating independent of any band unevenness ensures removal of the anode on a not too coating side superfluous and no moving parts may be required in the anode area.
- this task is arranged in an arrangement mentioned type solved in that each anode in parallel is divided into anode strips for the direction of the strip, the anode strips are insulated from each other and each anode strip is individually powered.
- the arrangement according to the invention allows depending the respective width of the strip to be coated only those To supply anode strips with electricity that face each other the volume.
- the current tape position can be used for this determine with the belt position measuring system that is available anyway.
- the tape is coated further, but to a lesser extent. This also applies to the streak after next. As a result, switching off individual anode strips results to make the coating more uniform.
- anode strips are sufficiently narrow, you can choose the over or under coverage of the strip edges with energized anode strips also control the layer thickness, for example falling towards the edge of the belt, evenly or rising.
- the insulating strips protruding from the surface of each anode protect the with sufficiently narrow anode strips Anode before tape stops, for the extremely unplaned tapes or a decrease in tension in the band may be the cause can.
- the under current in conventional arrangements too high short-circuit currents and with severe damage band contact with the anode surface, are therefore safe in this embodiment of the invention avoided.
- the insulating strips are preferably made of wear-resistant and unbreakable Material made.
- anodes according to the invention there are several anodes according to the invention in the running direction of the strip connected in series. Because of the individual Control options for the anodes connected in series can be summed up with each one Anode individually controllable coating profile always a Ensure uniform layer thickness.
- the coating profile can be controlled particularly effectively, by using the anode strips with the help of a current regulator Be supplied with electricity.
- the current regulator holds that in everyone Anode strips desired current strength constant. Since after Law of the Coulomb the galvanically deposited metal mass is directly proportional to the total current, the Control the coating thickness precisely (e.g. one gram of zinc deposition requires 1.22 Ah).
- the thickness of the coating can be changed control the anode strips of each anode along their length are divided several times and each anode strip part is preferred is individually powered by a switch. For example, if the anode strip is divided into 4, each anode strip can have 0%, 25%, 50%, 75%, and 100 % Current is applied.
- Figure 1 shows an arrangement for electroplating a band 2 running in an electrolyte 1.
- Parallel to the surfaces 2a, 2b of the band 2 are small Distance an upper and a lower anode 3a, 3b arranged.
- the width of the upper and lower anode 3a, 3b is aligned the widest tape to be coated.
- Anode width is 2050 mm.
- Edge masks 4 consist of insulating plates 4a, 4b and the strip edges 2c, 2d comprising U profiles 4c, 4d.
- the dimension depends on the immersion depth t of the strip edges 2c, 2d the zinc plating.
- Figure 3 illustrates this relationship using the example of a arcuate cross section of the band 2, which between a upper and a lower anode 3a, 3b is performed.
- the arrangement according to the invention in FIG. 4 consists of individual ones Anode strips 5a, 5b, in the embodiment shown arranged both above and below the belt 2 are.
- the individual anode strips 5a, 5b are through Insulating strips 6a, 6b insulated from each other, which in the direction of the electrolyte 1 over the surface of the through the Protruding strips 5a, 5b formed anodes.
- the anode strips 5a, 5b each form a lower and a upper box-shaped anode, which with not shown in Figure 4 side closures also the flow channel for the Form electrolyte 1.
- the entire arrangement can be moved laterally with little time required for repair and / or Exchange maintenance work. Special coating cells are not necessary with such a design.
- each individual anode strip 5a, 5b each via its own switch 8a, 8b with a central one Rectifier 7a, 7b connected, which supplies it with current.
- central rectifiers 7a, 7b it is also possible a separate rectifier for each individual anode strip assign, either via a switch or a current regulator is connected to the anode strip.
- FIG. 5 assumes that 4 according to the invention designed anodes ( Figure 4) one behind the other in the tape running direction are arranged. In the exemplary embodiment just a coating on the surface 2a of the tape 2. The anode strips 5b of the lower anode are all switched off.
- FIG. 6 shows a smoothing of the zinc layer in the Edge area when passing through only 2 connected in series Anodes with different wiring of the anode strips 5a, 5b in the edge region of the band 2.
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)
Abstract
Description
- Figur 1:
- Eine Anordnung zum elektrogalvanischen Beschichten von Bändern nach dem Stand der Technik ohne Kantenmasken,
- Figur 2:
- eine Anordnung zur elektrogalvanischen Beschichtung von Bändern nach dem Stand der Technik mit Kantenmasken,
- Figur 3:
- eine Darstellung der Schichtdicke bei unplanen Bändern am Beispiel eines Bandes mit Querbogen,
- Figur 4:
- ein Ausführungsbeispiel einer erfindungsgemäßen Anordnung zur elektrogalvanischen Metallbeschichtung,
- Figur 5:
- eine Darstellung zur Schichtdickensteuerung mit Hilfe einer erfindungsgemäßen Anordnung mit vier hintereinander geschalteten Anoden bei einseitiger Beschichtung sowie
- Figur 6:
- ein Diagramm zur Verdeutlichung des Schichtdickenausgleichs im Kantenbereich des Bandes.
Claims (9)
- Anordnung zur elektrogalvanischen Metallbeschichtung von Bändern, die durch einen mit Metall angereicherten sauren Elektrolyten laufen, mit mindestens einer parallel zu dem Band angeordneten unlöslichen Anode, von der der Strom zum als Kathode geschalteten Band fließt, wobei Metall aus dem Elektrolyten auf der Oberfläche des Bandes abgeschieden wird,
dadurch gekennzeichnet,daß jede Anode parallel zur Laufrichtung des Bandes in Anodenstreifen (5a, 5b) geteilt ist,daß die Anodenstreifen (5a, 5b) gegeneinander isoliert sind unddaß jeder Anodenstreifen (5a, 5b) einzeln mit Strom versorgt ist. - Anordnung zur elektrogalvanischen Metallbeschichtung von Bändern nach Anspruch 1,
dadurch gekennzeichnet,
daß die Anode breiter als jedes in der Anordnung zu beschichtende Band (2) ist. - Anordnung zur elektrogalvanischen Metallbeschichtung von Bändern nach Anspruch 1 oder 2,
dadurch gekennzeichnet,daß zwischen den Anodenstreifen (5a, 5b) angeordnete Isolierstoffe die Anodenstreifen gegeneinander isolieren unddaß die Isolierstoffe zumindest über die dem Band zugewandte Oberfläche jeder Anode hinaus in das Elektrolyt (1) hineinragen. - Anordnung zur elektrogalvanischen Metallbeschichtung von Bändern nach einem der Ansprüche 1 bis 3,
dadurch gekennzeichnet,
daß die Isolierstoffe in Form von Streifen (6a, 6b) verschleißfest und bruchsicher sind. - Anordnung zur elektrogalvanischen Metallbeschichtung von Bändern nach einem der Ansprüche 1 bis 4,
dadurch gekennzeichnet,
daß die Anodenstreifen (5a, 5b) eine Breite im Bereich zwischen 5 - 40 mm aufweisen. - Anordnung zur elektrogalvanischen Metallbeschichtung von Bändern nach einem der Ansprüche 1 bis 5,
dadurch gekennzeichnet,
daß mehrere Anoden in Laufrichtung des Bandes (2) hintereinander geschaltet sind. - Anordnung zur elektrogalvanischen Metallbeschichtung von Bändern nach einem der Ansprüche 1 bis 6,
dadurch gekennzeichnet,
daß jeder Anodenstreifen (5a, 5b) einzeln mittels eines Schalters (8a, 8b) mit Strom versorgt ist. - Anordnung zur elektrogalvanischen Metallbeschichtung von Bändern nach einem der Ansprüche 1 bis 6,
dadurch gekennzeichnet,
daß jeder Anodenstreifen (5a, 5b) einzeln mittels eines Stromreglers mit Strom versorgt ist. - Anordnung zur elektrogalvanischen Metallbeschichtung von Bändern nach einem der Ansprüche 1 bis 8,
dadurch gekennzeichnet,
daß die Anodenstreifen (5a, 5b) jeder Anode über ihre Länge mehrfach unterteilt sind und jeder Anodenstreifenteil, vorzugsweise über einen Schalter einzeln mit Strom versorgt ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19717489A DE19717489B4 (de) | 1997-04-25 | 1997-04-25 | Anordnung zur elektrogalvanischen Metallbeschichtung eines Bandes |
DE19717489 | 1997-04-25 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0875605A2 true EP0875605A2 (de) | 1998-11-04 |
EP0875605A3 EP0875605A3 (de) | 1998-12-09 |
EP0875605B1 EP0875605B1 (de) | 2006-05-31 |
Family
ID=7827729
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98107344A Expired - Lifetime EP0875605B1 (de) | 1997-04-25 | 1998-04-22 | Anordnung zur elektrogalvanischen Metallbeschichtung von Bändern |
Country Status (10)
Country | Link |
---|---|
US (1) | US6071384A (de) |
EP (1) | EP0875605B1 (de) |
JP (1) | JPH10310900A (de) |
KR (1) | KR100568022B1 (de) |
CN (1) | CN1221685C (de) |
AT (1) | ATE328137T1 (de) |
BR (1) | BR9801440A (de) |
DE (2) | DE19717489B4 (de) |
RU (1) | RU2205252C2 (de) |
UA (1) | UA57003C2 (de) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7427337B2 (en) * | 1998-12-01 | 2008-09-23 | Novellus Systems, Inc. | System for electropolishing and electrochemical mechanical polishing |
DE10100297A1 (de) * | 2001-01-04 | 2002-07-18 | Gesimat Gmbh | Vorrichtung und Verahren zur elektrochemischen Beschichtung |
KR20030025523A (ko) * | 2001-09-21 | 2003-03-29 | 지에스티 반도체장비(주) | Pcb 전해도금장치 |
DE102009041068A1 (de) * | 2009-09-10 | 2011-03-24 | GM Global Technology Operations, Inc., Detroit | Vorrichtung sowie Verfahren zur galvanischen Abscheidung einer Schicht auf einen Gegenstand |
KR20150057194A (ko) | 2013-11-18 | 2015-05-28 | 삼성전기주식회사 | 도금 장치 |
KR20150062008A (ko) | 2013-11-28 | 2015-06-05 | 삼성전기주식회사 | 도금 장치 |
KR102194716B1 (ko) | 2014-03-06 | 2020-12-23 | 삼성전기주식회사 | 도금 장치 |
KR101666461B1 (ko) * | 2014-12-24 | 2016-10-14 | 주식회사 포스코 | 에지 영역 과도금 방지를 위한 전기 도금 장치 |
EP3064617B1 (de) * | 2015-03-03 | 2018-08-15 | MTV Metallveredlung GmbH & Co. KG | VERFAHREN ZUR VERNICKELUNG GROßFLÄCHIGER BAUTEILE |
CN109487328A (zh) * | 2019-01-15 | 2019-03-19 | 山东宏旺实业有限公司 | 一种酸洗电解槽 |
KR102022920B1 (ko) * | 2019-06-25 | 2019-09-19 | 주식회사 태성 | 롤투롤 수평식 연속 도금장치 |
KR102597468B1 (ko) * | 2019-11-14 | 2023-11-01 | 에스케이넥실리스 주식회사 | 전해동박 도금장치 및 이를 포함하는 전해동박 제조장치 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0254703A1 (de) * | 1986-07-17 | 1988-01-27 | DELLOYE-MATTHIEU, Société Anonyme des Tôleries | Verfahren und Vorrichtung zum elektrolytischen Verzinken von Stahlband |
WO1990008209A1 (de) * | 1989-01-21 | 1990-07-26 | Hans Josef May | Vorrichtung zum elektrolytischen abscheiden von metallen auf einer oder beiden seiten von bändern |
EP0491163A1 (de) * | 1990-12-19 | 1992-06-24 | Nikko Gould Foil Co., Ltd. | Verfahren und Vorrichtung zur elektrolytischen Erzeugung von Kupferfolien |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4824925B1 (de) * | 1968-07-08 | 1973-07-25 | ||
JPS5218649A (en) * | 1975-08-04 | 1977-02-12 | Taku Sasagawa | Free stand for twoowheel vehicle on ground |
DE3017079A1 (de) * | 1980-05-03 | 1981-11-05 | Thyssen AG vorm. August Thyssen-Hütte, 4100 Duisburg | Vorrichtung zum elektroplattieren |
US4401523A (en) * | 1980-12-18 | 1983-08-30 | Republic Steel Corporation | Apparatus and method for plating metallic strip |
AU530006B2 (en) * | 1981-02-24 | 1983-06-30 | Nippon Kokan Kabushiki Kaisha | Method and apparatus for electroplating steel strip |
FR2725215B1 (fr) * | 1994-09-29 | 1996-11-22 | Lorraine Laminage | Cellule d'electrodeposition en continu d'alliages metalliques |
-
1997
- 1997-04-25 DE DE19717489A patent/DE19717489B4/de not_active Expired - Fee Related
-
1998
- 1998-04-22 DE DE59813567T patent/DE59813567D1/de not_active Expired - Lifetime
- 1998-04-22 AT AT98107344T patent/ATE328137T1/de not_active IP Right Cessation
- 1998-04-22 EP EP98107344A patent/EP0875605B1/de not_active Expired - Lifetime
- 1998-04-22 JP JP10112345A patent/JPH10310900A/ja active Pending
- 1998-04-23 US US09/065,317 patent/US6071384A/en not_active Expired - Fee Related
- 1998-04-23 BR BR9801440-4A patent/BR9801440A/pt not_active IP Right Cessation
- 1998-04-23 UA UA98042060A patent/UA57003C2/uk unknown
- 1998-04-24 RU RU98107629/02A patent/RU2205252C2/ru not_active IP Right Cessation
- 1998-04-24 CN CNB981094589A patent/CN1221685C/zh not_active Expired - Fee Related
- 1998-04-25 KR KR1019980014831A patent/KR100568022B1/ko not_active IP Right Cessation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0254703A1 (de) * | 1986-07-17 | 1988-01-27 | DELLOYE-MATTHIEU, Société Anonyme des Tôleries | Verfahren und Vorrichtung zum elektrolytischen Verzinken von Stahlband |
WO1990008209A1 (de) * | 1989-01-21 | 1990-07-26 | Hans Josef May | Vorrichtung zum elektrolytischen abscheiden von metallen auf einer oder beiden seiten von bändern |
EP0491163A1 (de) * | 1990-12-19 | 1992-06-24 | Nikko Gould Foil Co., Ltd. | Verfahren und Vorrichtung zur elektrolytischen Erzeugung von Kupferfolien |
Non-Patent Citations (1)
Title |
---|
CHEMICAL ABSTRACTS, vol. 87, no. 26, 26.Dezember 1977 Columbus, Ohio, US; abstract no. 208626, TOYODA, TOSHIO ET AL: "Control of the thickness during electroplating of metal strip" XP002060382 & JP 52 018 649 A (NIPPON STEEL CORP., JAPAN) * |
Also Published As
Publication number | Publication date |
---|---|
CN1206753A (zh) | 1999-02-03 |
CN1221685C (zh) | 2005-10-05 |
BR9801440A (pt) | 1999-09-28 |
EP0875605B1 (de) | 2006-05-31 |
DE19717489B4 (de) | 2008-04-10 |
ATE328137T1 (de) | 2006-06-15 |
KR100568022B1 (ko) | 2006-05-25 |
DE59813567D1 (de) | 2006-07-06 |
KR19980081740A (ko) | 1998-11-25 |
US6071384A (en) | 2000-06-06 |
UA57003C2 (uk) | 2003-06-16 |
RU2205252C2 (ru) | 2003-05-27 |
JPH10310900A (ja) | 1998-11-24 |
EP0875605A3 (de) | 1998-12-09 |
DE19717489A1 (de) | 1998-10-29 |
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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 |
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