DE461201C - Arrangement for holding metal deposits to be applied by electroplating on rollers made of light metal - Google Patents
Arrangement for holding metal deposits to be applied by electroplating on rollers made of light metalInfo
- Publication number
- DE461201C DE461201C DEL65162D DEL0065162D DE461201C DE 461201 C DE461201 C DE 461201C DE L65162 D DEL65162 D DE L65162D DE L0065162 D DEL0065162 D DE L0065162D DE 461201 C DE461201 C DE 461201C
- Authority
- DE
- Germany
- Prior art keywords
- metal
- light metal
- arrangement
- rollers
- rivets
- 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
Links
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
- C25D5/34—Pretreatment of metallic surfaces to be electroplated
- C25D5/42—Pretreatment of metallic surfaces to be electroplated of light metals
-
- 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
- C25D7/04—Tubes; Rings; Hollow bodies
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)
Description
Im Tiefdruck, Tapetendruck, zur Bearbeitung von Geweben u. dgl. werden Walzen aus Eisen, Messing, Bronze o·. dgl. benutzt, auf deren Oberfläche auf galvanoplastischem Wege ein starker Kupferniederschlag aufgetragen wird. Die Walzen rotieren während des Niederschlagsverfahrens ganz oder teilweise in dem galvanischen Bad, und es wird vielfach, zur Erzielung eines besonders feinkörnigen und harten Kupfers eine Glättung durch Achate u. dgl. vorgenommen, die dauernd auf die Walzenoberfläche während des Aufkupferns drücken. Wegen der teilweise recht beträchtlichen Abmessungen derartiger Walzen und ihres hohen Gewichtes, das eine besondere sorgfältige Lagerung der Walzen erfordert, ist man neuerdings dazu übergegangen, für die Herstellung derartiger Druckwalzen Leichtmetalle zu verwenden, auf denen bekanntlich der galvanoplastische Niederschlag nicht in gleich guter Weise haftet, wie auf einer Unterlage aus Eisen, Messing, Kupfer, Bronze u. dgl.In gravure printing, wallpaper printing, for processing fabrics and the like, rollers are used made of iron, brass, bronze, etc. Like. Used, on the surface of galvanoplastic Ways a heavy copper precipitate is applied. The rollers rotate during of the deposition process in whole or in part in the electroplating bath, and it becomes often a smoothing to achieve a particularly fine-grained and hard copper made by agates and the like, which continuously hit the roller surface during the Press on copper. Because of the sometimes quite considerable dimensions of such Rolls and their heavy weight, that a particularly careful storage of the rolls requires, there has recently been a transition to the production of such printing rollers To use light metals on which, as is well known, the electroforming deposit does not adhere equally well, like on a base made of iron, brass, copper, bronze and the like.
Wählt man die in der Galvanotechnik bekannten Methoden zur Erzielung festhaftender galvanischer Überzüge auf Aluminium und Aluminiumlegierungen durch Auftragen einer meist auf dem Kontaktweig aufgetragenen Zwischenmetallschicht, so ist es trotzdem noch möglich, den starken galvanoplastisch aufgetragenen Metallmantel beim Aufschneiden von den Walzen abzuziehen. Aus diesem Grunde ist auch schon versucht worden, ein stärkeres Haften der aufgetragenen Metallschicht durch Riffelung oder sonstige mechanische Aufrauhung der Leidhtmetallwalzen zu erreichen, ohne daß dieses Verfahren völlig befriedigt hätte.If one chooses the methods known in electroplating to achieve more firmly adhering galvanic coatings on aluminum and aluminum alloys by applying an intermediate metal layer, usually applied to the contact branch, that is how it is still possible, the strong electroformed metal jacket at Remove cutting from the rollers. For this reason it has already been tried a stronger adhesion of the applied metal layer by corrugation or other mechanical roughening of the metal rollers to achieve without this process would have been completely satisfactory.
Befestigt man jedoch gemäß der Neuerung auf der Oberfläche der Walzen an beliebigen Stellen Schrauben, Nieten, Bolzen u. dgl. aus Kupfer oder einem anderen geeigneten Metall, auf dem der galvanoplastisch aufgetragene Niederschlag gut haftet, so erreicht man eine sehr gute Adhäsion des aufgetragenen Metallmantels. However, according to the innovation, it is attached to any desired on the surface of the rollers Place screws, rivets, bolts, etc. made of copper or another suitable metal, to which the electrodeposited deposit adheres well, one achieves a very good adhesion of the applied metal jacket.
Die Zeichnung zeigt ein Ausführungsbeispiel, in welchem Schrauben, Nieten oder Bolzen ι verschiedener Formen angebracht sind, die das Festhaften des galvanischen Nieder-Schlags bewirken. Begünstigt wird das Festhaften des Niederschlags 3 auf der Leichtmetallwalze 2, wenn man die Köpfe der Schrauben, Nieten oder Bolzen 1 etwas über die Oberfläche der Walzen 2 hervorstehen läßt, damit an den dadurch: gebildeten unterschnittenen Stellen der galvanische Niederschlag sich festhalten kann. Man kann jedoch auch die Leichtmetallwalze 2 zuerst in üblicher Weise mit einem dünnen Metallniederschlag versehen, den man durch Vernieten oder Verschrauben auf der Walzenoberfläche befestigt, 11m alsdann erst den endgültigen Metallüberzug 3 aufzutragen.The drawing shows an embodiment in which screws, rivets or bolts ι different forms are attached, the adherence of the galvanic precipitate cause. The adherence of the precipitate 3 on the light metal roller is promoted 2 if you look at the heads of the screws, rivets or bolts 1 something about the Surface of the rollers 2 can protrude so that the undercut formed thereby: Places the galvanic precipitate can hold on. But you can too the light metal roller 2 first in the usual way with a thin metal deposit provided, which is attached to the roller surface by riveting or screwing, 11m then only apply the final metal coating 3.
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEL65162D DE461201C (en) | Arrangement for holding metal deposits to be applied by electroplating on rollers made of light metal |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEL65162D DE461201C (en) | Arrangement for holding metal deposits to be applied by electroplating on rollers made of light metal |
Publications (1)
Publication Number | Publication Date |
---|---|
DE461201C true DE461201C (en) | 1928-06-16 |
Family
ID=7281281
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEL65162D Expired DE461201C (en) | Arrangement for holding metal deposits to be applied by electroplating on rollers made of light metal |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE461201C (en) |
-
0
- DE DEL65162D patent/DE461201C/en not_active Expired
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