DE815134C - Form anode for the galvanic treatment of cylindrical workpieces, especially for chrome-plating the running parts of crankshafts - Google Patents
Form anode for the galvanic treatment of cylindrical workpieces, especially for chrome-plating the running parts of crankshaftsInfo
- Publication number
- DE815134C DE815134C DEP4191A DEP0004191A DE815134C DE 815134 C DE815134 C DE 815134C DE P4191 A DEP4191 A DE P4191A DE P0004191 A DEP0004191 A DE P0004191A DE 815134 C DE815134 C DE 815134C
- Authority
- DE
- Germany
- Prior art keywords
- chrome
- form anode
- crankshafts
- plating
- rings
- 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
- 238000007747 plating Methods 0.000 title claims description 4
- 239000002184 metal Substances 0.000 claims description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 4
- 238000000034 method Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 1
- 238000005246 galvanizing Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
- Electroplating Methods And Accessories (AREA)
Description
Die bisher bekanntenVerfahren zur galvanischen Behandlung von Werkstücken wurden mittels Anoden durchgeführt, die keine gleichmäßige Schicht ergaben. Es war -daher z. B. bei der Verchroinung der laufenden Teile von Kurbelwellen immer erforderlich, die galvanisch behandelten Teile nachträglich auf Maß zu schleifen. Dabei ging, abgesehen von der aufzuwendenden Präzisionsarbeit, häufig sehr viel wertvolles Chrom verloren.The previously known methods for the galvanic treatment of workpieces were carried out using anodes which did not result in a uniform layer. It was -therefore z. B. always necessary for the chrome plating of the running parts of crankshafts, to subsequently grind the electroplated parts to size. Thereby went apart from the precision work that has to be expended, there is often a great deal of valuable chrome lost.
Der Erfindung liegt die Aufgabe zugrunde, ohne eine derartige Nachbehandlung auszukommen und durch \\'ahl der Form der Anode bereits eine gleichmäßige Schicht zu erhalten.The invention is based on the object without such aftertreatment get along and through the shape of the anode already an even layer to obtain.
Erfindungsgemäß wird diese Aufgabe dadurch gelöst, daß die Anode aus mehreren den Zylinder umgebenden miteinander mechanisch und elektrisch verbundenen Ringen besteht.According to the invention this object is achieved in that the anode from a plurality of the cylinder surrounding each other mechanically and electrically connected Wrestling.
Abgesehen von den oben angeführten Vorteilen ist erfindungsgemäß noch erreicht, daß die in Frage kommenden Bäder, z. B. Chrombäder, nur für kurze "Zeit in Benutzung sind. Es kommt noch das wirtschaftliche Moment hinzu, daß im Vergleich zu den bekannten Verfahren, da nicht länger als unbedingt nötig, galvanisiert wird, weniger Chrommetall und weniger Strom verbraucht.wird.Apart from the advantages listed above, according to the invention is still achieved that the baths in question, z. B. Chrome baths, only for a short time are in use. There is also the economic factor that in comparison to the known processes, as galvanizing is not longer than absolutely necessary, less chrome metal and less electricity is used.
Die neue Formanode liefert auch bei verhältnismäßig starken Schichten einen absolut gleichmäßigen Niederschlag. Bei dünneren Schichten ist eine genaue Maßverchromung möglich.The new shaped anode delivers even with relatively thick layers an absolutely even precipitation. In the case of thinner layers, an exact one is used Custom chrome plating possible.
Im Sinne der Erfindung ist die in einem bestimmten Abstand von der zu behandelnden zylindrischen Fläche angeordnete Formanode aus mehreren Ringen gebildet. Ein Merkmal der Erfindung besteht noch darin, daß die Innenflächen dieser Ringe konisch ausgebildet sind, wobei jeweils der größere Durchmesser auf der Innenseite des Ringes liegt. Im Sinne einer gleichmäßigen Verteilung des aufzubringenden Metalls ist die durch die Ringe begrenzte, käfigartige Anode nicht so breit wie die Länge des zu behandelnden zylindrischen Teiles.For the purposes of the invention, the is at a certain distance from the To be treated cylindrical surface arranged shaped anode formed from several rings. Another feature of the invention is that the inner surfaces of these rings are conical, with the larger diameter on the inside of the ring lies. In terms of an even distribution of the metal to be applied the cage-like anode delimited by the rings is not as wide as the length of the cylindrical part to be treated.
In der Zeichnung ist eine Ausführungsform der Erfindung dargestellt.In the drawing, an embodiment of the invention is shown.
Fig. i zeigt eine Kurbelwelle, bei welcher über den linken laufenden Teil die zweiteilige Formanode angeordnet ist, in Fig. 2 ist die Formanode nochmals besonders herausgezeichnet. Der zylindrische Teil i der Kurbelwelle -soll galvanisch behandelt werden. Die Formanode besteht aus zwei Halbringen 2 und den entsprechenden Gegenhalbringen 3. Diese Halbringe sind durch die Stege 6, 11, 7 und 8 mechanisch miteinander verbunden. Auf diese Weise entsteht ein käfigförmiger Körper, der von den Seiten gesehen zwei Ringe aufweist, welche durch die Stege 6 und i i miteinander verbunden sind. Dieser Käfig ist, wie bereits beschrieben, zweiteilig und wird durch die Stege 6, 11, 7 und 8 zusammengehalten. Die Stege 6 und i i sind mit den Stromzuführungen 4 und 5 durch Anlöten mechanisch und elektrisch verbunden. Die einzelnen Ringe weisen nach dein zylindrischen Teil der Kurbelwelle hin eine konische Begrenzung auf, was daraus hervorgeht, daß der Durchmesser io der Innenkante größer ist als der Durchmesser 9 der Außenkante. Der so erzielte Querschnitt des einzelnen Ringes ist in der Fig. 2 bei i i besonders herausgezeichnet.Fig. I shows a crankshaft in which over the left running Part of the two-part molded anode is arranged, in Fig. 2 the molded anode is again particularly distinguished. The cylindrical part i of the crankshaft should be galvanic be treated. The shaped anode consists of two half-rings 2 and the corresponding ones Counter-half rings 3. These half rings are mechanical due to the webs 6, 11, 7 and 8 connected with each other. In this way, a cage-shaped body is created that is supported by has seen the sides two rings, which through the webs 6 and i i with each other are connected. As already described, this cage is in two parts and is made by the webs 6, 11, 7 and 8 held together. The webs 6 and i i are with the power supply lines 4 and 5 mechanically and electrically connected by soldering. The individual rings point towards your cylindrical part of the crankshaft a conical limit on what it follows that the diameter io of the inner edge is greater than the diameter 9 the outer edge. The cross-section of the individual ring achieved in this way is shown in FIG. 2 particularly highlighted at i i.
In dieser Ausführungsform sind zwei Ringe vorhanden. Bei längeren Werkstücken ist aber auch eine Ausführung mit 3 Ringen möglich, bei welcher der mittlere Ring dann nach dem Werkstück hin eine zylindrische Begrenzungsebene hat.In this embodiment there are two rings. For longer Workpieces, however, a version with 3 rings is also possible, in which the middle ring then has a cylindrical delimitation plane towards the workpiece.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP4191A DE815134C (en) | 1949-09-15 | 1949-09-15 | Form anode for the galvanic treatment of cylindrical workpieces, especially for chrome-plating the running parts of crankshafts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP4191A DE815134C (en) | 1949-09-15 | 1949-09-15 | Form anode for the galvanic treatment of cylindrical workpieces, especially for chrome-plating the running parts of crankshafts |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE815134C true DE815134C (en) | 1951-09-27 |
Family
ID=7359325
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DEP4191A Expired DE815134C (en) | 1949-09-15 | 1949-09-15 | Form anode for the galvanic treatment of cylindrical workpieces, especially for chrome-plating the running parts of crankshafts |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE815134C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2940917A (en) * | 1957-11-07 | 1960-06-14 | Chrome Crankshaft Co Inc | Electroplating anode |
-
1949
- 1949-09-15 DE DEP4191A patent/DE815134C/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2940917A (en) * | 1957-11-07 | 1960-06-14 | Chrome Crankshaft Co Inc | Electroplating anode |
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