EP1288340A2 - Dispositif galvanique - Google Patents

Dispositif galvanique Download PDF

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Publication number
EP1288340A2
EP1288340A2 EP02014161A EP02014161A EP1288340A2 EP 1288340 A2 EP1288340 A2 EP 1288340A2 EP 02014161 A EP02014161 A EP 02014161A EP 02014161 A EP02014161 A EP 02014161A EP 1288340 A2 EP1288340 A2 EP 1288340A2
Authority
EP
European Patent Office
Prior art keywords
container
vertical axis
flow
flow dividers
rotor
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.)
Withdrawn
Application number
EP02014161A
Other languages
German (de)
English (en)
Other versions
EP1288340A3 (fr
Inventor
Wulf Dr. Brämer
Winfried Krämer
Ulrich Dr. Koops
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kulzer GmbH
Original Assignee
Heraeus Kulzer GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Heraeus Kulzer GmbH filed Critical Heraeus Kulzer GmbH
Publication of EP1288340A2 publication Critical patent/EP1288340A2/fr
Publication of EP1288340A3 publication Critical patent/EP1288340A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
    • C25D5/08—Electroplating with moving electrolyte e.g. jet electroplating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F33/00—Other mixers; Mixing plants; Combinations of mixers
    • B01F33/45—Magnetic mixers; Mixers with magnetically driven stirrers
    • B01F33/452—Magnetic mixers; Mixers with magnetically driven stirrers using independent floating stirring elements
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D21/00—Processes for servicing or operating cells for electrolytic coating
    • C25D21/10—Agitating of electrolytes; Moving of racks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/50—Mixing receptacles
    • B01F35/53—Mixing receptacles characterised by the configuration of the interior, e.g. baffles for facilitating the mixing of components
    • B01F35/531—Mixing receptacles characterised by the configuration of the interior, e.g. baffles for facilitating the mixing of components with baffles, plates or bars on the wall or the bottom

Definitions

  • the invention relates to a galvanic device for applying a noble metal layer at least one cathodically switchable object, in particular dental object, with a container for receiving an electrolyte, which generates a rotor which can be rotated about a vertical axis of flow vortices in the electrolyte.
  • Such a galvanic device is known to the person skilled in the art, for example, from DE 38 09 435 C2 known.
  • the DE describes a method from dental technology for direct manufacture an inner crown consisting mainly of a precious metal on a working model a tooth of a crown composed of layers to restore crowns, an electrically conductive coating which is insoluble in a plating bath an inner crown forming surface on a working model of a tooth and is solidified.
  • the non-conductive working model of a tooth with the conductive one Provided coating and connected cathodically, while still an anode and a Auxiliary electrode made of the same metal as the one to be immersed in the electroplating bath so that the metal to be plated is applied as material for the inner crown becomes.
  • a stirrer is used for mechanical stirring of the galvanizing bath.
  • At least one perforated through flow openings is placed in the sample container Flow resistance body immersed, so that by means of the magnetic stirrer or stir bar generated uniform flow through the flow resistance body with its Flow openings are interrupted and swirling the water sample in all Directions occur. It creates a chaotic flow, so to speak, one of them uniform distribution of the suspended matter or particles takes place.
  • the flow resistance body as a perforated paddle or formed as a fork with fork tines arranged at predetermined intervals.
  • a vessel with a magnetic stirrer is known from US Pat. No. 4,162,855, the Magnetic stirrer in a basket-like positioning frame in the bottom area of the vessel rotates. This is intended to center the magnetic stirrer easily, even at a low rotational speed can be achieved, which also results in a simple cleaning option.
  • adjustable baffles for mixing machines are known from DE 21 25 698 A, which are designed in sheet form and on cast lanterns fastened in the outer part of the mixer are stored.
  • EP 0 673 442 B1 describes a flow regulation system, in particular for Pouring devices, known in which one to suppress rotating flows Liquid, which is dispensed vertically through a nozzle, flows around a flow divider the longitudinal axis of the outlet nozzle are arranged and hold a baffle so that the Baffle plate is axially spaced from the outlet opening and that the flow parts are radial Define flow paths that, taken together, have a cross-sectional area that is at least as large as the cross-sectional area for the flow through the nozzle.
  • the flow regulating system thus has a hollow shape, the central of which and the vertical axis, the flow dividers radiate around the longitudinal axis of the outlet opening are arranged. It is therefore about the removal of eddies by one to the central Axial radial flow, which after passing through the passage between the Flow dividers are passed in a vertical direction to the pouring opening to enable vortex-free casting.
  • the object of the invention is also to improve the flow behavior of the electrolyte to the cathode To optimize high stirring speed so that no suction or funnel formation can occur in the area of the axis of rotation.
  • the object is achieved in that at least two flow dividers which are fixed in relation to the container and are arranged at a distance from the axis are provided.
  • the flow dividers have deflection surfaces which run at least approximately in the radial direction to the vertical axis.
  • “Radial” is understood to mean any extension, as seen from the vertical axis.
  • a magnetic stirrer in a recess between the flow dividers Rotor a magnetic stirrer can be used, which is generated due to an outside of the container Magnetic field is rotatably arranged.
  • the flow dividers have plate-shaped designs Deflection surfaces, each in the area of their outer periphery to the inside or Inner wall of the container are arranged adjacent.
  • the container is in relation to the central axis formed as a hollow cylinder, which on its inside to the vertical axis has directed plate-shaped flow dividers, the deflecting surfaces at least are aligned approximately radially to the central axis.
  • the baffles the flow dividers - seen in the radial direction - extend from the inside or Inner wall of the container up to a recess, in the central area of which a rotor is located rotates around the vertical axis.
  • the flow dividers are seen in the axial direction Distance to the bottom of the container; thus there is between the flow dividers - or their Bottom edges - and the bottom of the container one from the vertical axis to the inside wall of the container is provided so that the rotor - e.g. as a magnetic stirrer - can move freely.
  • Preferably six flow dividers are used inside the container, each at a distance of 60 ° are arranged.
  • Figure 1 shows a device with a container in plan view, with six flow dividers are used at an angular distance of 60 °.
  • FIG. 2 shows a longitudinal section through a container with two opposing flow dividers, the container being shown broken on for simplicity Console is positioned.
  • the container 2 designed as a hollow shape has 3 flow dividers on its inside 1, which extend in the radial direction to the vertical axis 4 of the container.
  • a rotor 5 is used schematically here - for example a magnetic stirrer Axis 4 is rotated, particles of the galvanic bath due to the centrifugal force pushed towards the flow divider 1, their angular velocity around Axis 4 is abruptly throttled by the deflection surfaces of the flow divider 1, so that along of the deflecting vortices are formed, for example, at high angular velocity 500-1500 rpm also lead to extremely high turbulence in the electroplating bath.
  • the flow dividers 1 are flow modifiers recognizable in longitudinal section, preferably using six flow dividers at 60 ° intervals become.
  • the cup 2 is on a schematically indicated here Console 8, in which a magnetic rotating field is generated, which serves as the rotor 5 Magnetic stirrer, which rests in the bottom area of container 2, rotated.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Mixers With Rotating Receptacles And Mixers With Vibration Mechanisms (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
  • Electroplating Methods And Accessories (AREA)
  • Chemically Coating (AREA)
EP02014161A 2001-06-26 2002-06-25 Dispositif galvanique Withdrawn EP1288340A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10130333A DE10130333B4 (de) 2001-06-26 2001-06-26 Galvanische Vorrichtung zur Abscheidung von Edelmetall
DE10130333 2001-06-26

Publications (2)

Publication Number Publication Date
EP1288340A2 true EP1288340A2 (fr) 2003-03-05
EP1288340A3 EP1288340A3 (fr) 2006-05-17

Family

ID=7689198

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02014161A Withdrawn EP1288340A3 (fr) 2001-06-26 2002-06-25 Dispositif galvanique

Country Status (2)

Country Link
EP (1) EP1288340A3 (fr)
DE (1) DE10130333B4 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018191825A1 (fr) * 2017-04-21 2018-10-25 Bevstir Innovations Inc. Moyen de saisie de barre d'agitation magnétique

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011114191A1 (de) * 2011-09-22 2013-03-28 Eagleburgmann Germany Gmbh & Co. Kg Spalttopf für eine Magnetkupplung mit verbesserter Fluidströmung
JP7137213B2 (ja) 2016-03-22 2022-09-14 プレジデント アンド フェローズ オブ ハーバード カレッジ 生体適合性接着剤およびその使用の方法

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2125698A1 (fr) 1970-06-18 1971-12-23 Bandstahlkombinat Veb
US4162855A (en) 1974-11-18 1979-07-31 Spectroderm International, Inc. Magnetic stirrer apparatus
US5078505A (en) 1987-10-21 1992-01-07 Outokumpu Oy Apparatus for creating a double loop flow
DE29705162U1 (de) 1997-03-21 1997-06-26 Maihak AG, 22303 Hamburg Vorrichtung zum Homogenisieren von Flüssigproben, insbesondere Wasserproben
DE3809435C2 (de) 1987-04-10 1997-07-17 G C Dental Ind Corp Verfahren und Vorrichtung zur Herstellung einer inneren Krone einer aus Schichten zusammengesetzten Krone zur Wiederherstellung von Kronen
US5676462A (en) 1996-04-16 1997-10-14 Eastman Kodak Company Suspended magnetic impeller/baffle apparatus for liquid
EP0673442B1 (fr) 1992-12-08 1999-05-26 R. Guthrie Research Associates Inc. Dispositif de regulation d'ecoulement pour la suppression des tourbillons

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3265368A (en) * 1964-04-10 1966-08-09 Pfaudler Permutit Inc Baffle for mixing devices
US3265369A (en) * 1964-10-09 1966-08-09 Gen Ind Co Denture cleaners
JPS539236A (en) * 1976-07-13 1978-01-27 Nippon Piston Ring Co Ltd High speed chromium plating method
SE439592B (sv) * 1982-02-01 1985-06-24 Flygt Ab Sett att omblanda vetska i cirkulera eller ovala behallare med hjelp av en propelleromrorare
JP2628184B2 (ja) * 1988-04-25 1997-07-09 日新製鋼株式会社 微粉末に金属を電気めっきする方法
US5800058A (en) * 1995-11-06 1998-09-01 The Research Foundation Of State University Of New York Vortex elimination device
KR20020009566A (ko) * 1999-03-11 2002-02-01 추후제출 세포 용해물의 혼합용 용기

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2125698A1 (fr) 1970-06-18 1971-12-23 Bandstahlkombinat Veb
US4162855A (en) 1974-11-18 1979-07-31 Spectroderm International, Inc. Magnetic stirrer apparatus
DE3809435C2 (de) 1987-04-10 1997-07-17 G C Dental Ind Corp Verfahren und Vorrichtung zur Herstellung einer inneren Krone einer aus Schichten zusammengesetzten Krone zur Wiederherstellung von Kronen
US5078505A (en) 1987-10-21 1992-01-07 Outokumpu Oy Apparatus for creating a double loop flow
EP0673442B1 (fr) 1992-12-08 1999-05-26 R. Guthrie Research Associates Inc. Dispositif de regulation d'ecoulement pour la suppression des tourbillons
US5676462A (en) 1996-04-16 1997-10-14 Eastman Kodak Company Suspended magnetic impeller/baffle apparatus for liquid
DE29705162U1 (de) 1997-03-21 1997-06-26 Maihak AG, 22303 Hamburg Vorrichtung zum Homogenisieren von Flüssigproben, insbesondere Wasserproben

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018191825A1 (fr) * 2017-04-21 2018-10-25 Bevstir Innovations Inc. Moyen de saisie de barre d'agitation magnétique

Also Published As

Publication number Publication date
DE10130333B4 (de) 2004-05-27
EP1288340A3 (fr) 2006-05-17
DE10130333A1 (de) 2003-01-09

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