DE966037C - Contact body and process for its manufacture - Google Patents
Contact body and process for its manufactureInfo
- Publication number
- DE966037C DE966037C DES13499D DES0013499D DE966037C DE 966037 C DE966037 C DE 966037C DE S13499 D DES13499 D DE S13499D DE S0013499 D DES0013499 D DE S0013499D DE 966037 C DE966037 C DE 966037C
- Authority
- DE
- Germany
- Prior art keywords
- powder
- metal
- mold
- sintered
- pressed
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
- H01R43/06—Manufacture of commutators
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Motor Or Generator Current Collectors (AREA)
Description
Die Erfindung betrifft Kontaktkörper, insbesondere Schleifringe, Kommutatorsegmente od. dgl. sowie Verfahren zu deren Herstellung. Die Herstellung von Stromwenderstegen aus Verbundmetall ist mit erheblichen Schwierigkeiten und Nachteilen verbunden. Auch das Walzplattieren führte bisher nicht zu zufriedenstellenden Ergebnissen. Eine der Hauptschwierigkeiten besteht darin, daß die namentlich bei Stromwenderstegen im Vergleich zur Steghöhe geringe Stegbreite leicht zu Brüchen bei der Herstellung führt. Außerdem gelang es vielfach nicht, die gewünschte Haftfestigkeit zu erreichen. Der nur durch eine schmale Plattierungszone mit dem Fuß verbundene Kopfteil der Segmente wurde infolge der nicht zu vermeidenden Reckspannungen verhältnismäßig schnell locker. Dieses Lockerwerden tritt bereits schon beim Verarbeiten auf, wenn man die Verbundmetallstangen durch Schnitte in Einzelsegmente aufteilt.The invention relates to contact bodies, in particular slip rings, commutator segments or the like. As well as Process for their manufacture. The production of commutator bars from composite metal is significant Associated difficulties and disadvantages. Roll cladding has also not led to satisfactory results so far Results. One of the main difficulties is that the by name Commuter bars compared to the bar height, small bar width easily leads to breaks during manufacture. In addition, it was often not possible to achieve the desired adhesive strength. The only one narrow cladding zone connected to the foot of the head part of the segments became unavoidable as a result Stretching tension loosens relatively quickly. This loosening already occurs with Process on when the composite metal rods are divided into individual segments by means of cuts.
Es ist an sich bereits bekannt, elektrische Kontaktkörper auf dem Sinterwege unter Anwendung der Metallkeramik herzustellen. Die Anwendung dieser Technik gestattet es nun, die eingangs geschilderten Schwierigkeiten in einfacher Weise zu beheben, wenn man die Kontaktkörper aus Verbundmetallkeramik herstellt.It is already known per se, using the electrical contact body by sintering Manufacture metal-ceramics. The application of this technique now allows the aforementioned Difficulties can be resolved in a simple manner if the contact body made of composite metal-ceramic manufactures.
Bei der Herstellung der Kontaktkörper wird in der Weise verfahren, daß man verschiedenartige Metallpulver, Metalloxydpulver od. dgl. getrennt in eineIn the manufacture of the contact body, the procedure is that different types of metal powder, Metal oxide powder or the like. Separated into one
709 572/91709 572/91
Form bringt, in dieser preßt und vorzugsweise nach dem Pressen sintert. In die Form werden vorteilhaft Scheidewände eingebracht, mittels welcher die verschiedenen oder verschiedenartigen Pulver beim Einfüllen voneinander getrennt werden. Diese Scheidewände werden vor dem Pressen herausgenommen. Man kann die zu pressenden und zu sinternden Massen beispielsweise mittels eines Bindemittels, wie Glyzerin, ganz oder teilweise anfeuchten. Die fertigen Kontaktkörper kann man zwecks Verdichtung des Gefüges einer Nachbearbeitung unterwerfen.Brings shape, presses in this and preferably sinters after pressing. In shape will be beneficial Partitions introduced, by means of which the different or different types of powder when filling separated from each other. These partitions are removed before pressing. The masses to be pressed and sintered can, for example, by means of a binding agent such as glycerine, moisten completely or partially. The finished contact body can be used for the purpose of compacting the structure subject to post-processing.
In der Zeichnung ist ein Ausführungsbeispiel dargestellt. An exemplary embodiment is shown in the drawing.
Fig. ι zeigt ein Kommutatorsegment, von der Stirnseite aus gesehen, undFig. Ι shows a commutator segment from the front seen from, and
Fig. 2 veranschaulicht die Herstellung eines Kommutatorsegments, von der Längsseite her gesehen.Fig. 2 illustrates the production of a commutator segment, seen from the longitudinal side.
Wie aus Fig. 2 ersichtlich, wird in die auf die Unterlage ι aufgesetzte Form 2 bei 3 Eisenpulver und bei 4 Kupferpulver eingeschüttet. Die Räume 3 und 4 sind durch die provisorische Scheidewand 5 voneinander getrennt. Nachdem die Pulver 3 und 4 in die Form 2 eingeschüttet sind, wird die Scheidewand 5 herausgezogen und der aus den Teilen 3 und 4 gebildete Segmentkörper mittels des Stempels 6 zusammengepreßt. Als Eisenpulver verwendet man vorteilhaft Carbonyleisen. Eines der Pulver ist zweckmäßig angefeuchtet, beispielsweise mit Glyzerin. Durch das Pressen erhält man den in Fig. 1 von der Stirnseite dargestellten Segmentkörper 7, der nun gesintert wird, so daß eine innige Verbindung zwischen den einzelnen Komponenten eintritt.As can be seen from Fig. 2, in the placed on the pad ι form 2 at 3 iron powder and at 4 poured copper powder. Rooms 3 and 4 are separated from each other by the temporary partition 5 separated. After the powders 3 and 4 have been poured into the mold 2, the partition becomes 5 pulled out and the segment body formed from parts 3 and 4 pressed together by means of the punch 6. Carbonyl iron is advantageously used as the iron powder. One of the powders is appropriate moistened, for example with glycerine. By pressing one obtains the in Fig. 1 of the End face shown segment body 7, which is now sintered, so that an intimate connection between the individual components occurs.
Eine der Komponenten kann atich einen porösen Körper bilden, in welchen die andere Komponente in den Berührungsgebieten eindringt. Die Porenzone zeigt dann im Grenzgebiet eine ausgeprägte Verzahnung des Grundmetalls mit dem Deckmetall. Diese Verzahnung kann noch schärfer ausgeprägt werden, wenn man das angefeuchtete Pulver des Grundmetalls nicht vorpreßt, sondern nur angefeuchtet in die Preßform gibt und alsdann das Pulver des Deckmetalls trocken aufschüttet und hierauf das Ganze verpreßt und sintert.One of the components can atich a porous Form bodies into which the other component penetrates in the areas of contact. The pore zone then shows a pronounced interlocking of the base metal with the cover metal in the border area. This interlocking can be made even more pronounced if you use the moistened powder of the base metal not pre-pressed, but only moistened in the mold and then the powder of the cover metal piled up dry and then the whole thing pressed and sintered.
Auf metallkeramischem Wege ist man in der Lage, derartige Stromwenderstegprofile unmittelbar in ihrer endgültigen Gestalt herzustellen und spangebende Verformung vollkommen auszuschalten. Es läßt sich bei Kupfer als Deckmetall leicht eine Nachverdichtung durch Prägen oder Pressen vornehmen, um die zur Erzielung guter Laufeigenschaften nötige Oberflächenbeschaffenheit des Deckmetalls zu erzielen. Dieser Arbeitsgang kann nach der Erfindung gegebenenfalls erspart werden, und es können wesentlich erhöhte Oberflächenhärten erzielt werden, wenn man als Deckmetall entweder eine Mischkristalle bildende Mehrstofflegierung, z. B. vom Typ Al-Cu, Cu-Ni, Cu-Zn, Cu-Sn, wählt oder indem man dieses Ziel durch Ausscheidungshärtung, vorzugsweise durch Zusätze von Beryllium, zu erreichen sucht. Man ist bei der Herstellung dieser Deckschichten auf metallkeramischem Wege bereits bei Anwendung von wenigen Gewichtsprozenten der Zulegierung in der Lage, wesentlich erhöhte Härtegrade und damit eine gesteigerte Verschleißfestigkeit zu erzielen, was besonders bei hochtourigen Kleinstmaschinen von nicht zu unterschätzen- 6g der Bedeutung ist. Wie bereits eingangs erwähnt, ist das neue Verfahren nicht nur auf die Verwendung verschiedenartiger Metallpulver beschränkt, sondern erstreckt sich namentlich auch auf die Verwendung von Metallpulver in Verbindung mit gepulverten Metalloxyden, die in der Weise zusammengestellt werden können,daß metallische Kernlagen von isolierenden Metalloxyden seitlich bedeckt sind, so daß z. B. ein Kommutatorsegmentkranz entsteht, der von vornherein aus leitenden Teilen besteht, die mit nichtleitenden Teilen abwechseln, je nach dem Anteil des zur Herstellung dienenden Pulvers an Metalloxyden bzw. Metallen. Die Herstellung dieser Segmentringe kann kontinuierlich oder diskontinuierlich erfolgen.In a metal-ceramic way, one is able to produce such commutator web profiles directly in their to produce the final shape and completely eliminate cutting deformation. It can be In the case of copper as a cover metal, it is easy to re-densify by embossing or pressing in order to achieve the Achieving good running properties to achieve the necessary surface quality of the cover metal. This According to the invention, operation can optionally be saved, and it can be significantly increased Surface hardening can be achieved if either a mixed crystal forming multi-component alloy is used as the cover metal, z. B. of the type Al-Cu, Cu-Ni, Cu-Zn, Cu-Sn, or choosing this target by precipitation hardening, preferably by adding beryllium. One is in the process of making these top layers in a metal-ceramic way with the use of a few percent by weight the additional alloy is capable of significantly higher degrees of hardness and thus increased wear resistance to achieve, which should not be underestimated, especially with high-speed micro machines of 6g the meaning is. As already mentioned at the beginning, the new process is not just about using it different types of metal powder, but also extends specifically to the use of Metal powder in connection with powdered metal oxides, which can be put together in such a way that metallic core layers are laterally covered by insulating metal oxides, so that, for. B. a commutator segment ring arises, which from the start consists of conductive parts with non-conductive parts alternate, depending on the proportion of metal oxides or metals in the powder used for production. These segment rings can be produced continuously or discontinuously.
Claims (10)
Deutsche Patentschriften Nr. 302 650, 541 515, 689372;Considered publications:
German Patent Nos. 302 650, 541 515, 689372;
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DES13499D DE966037C (en) | 1943-02-23 | 1943-02-23 | Contact body and process for its manufacture |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DES13499D DE966037C (en) | 1943-02-23 | 1943-02-23 | Contact body and process for its manufacture |
Publications (1)
Publication Number | Publication Date |
---|---|
DE966037C true DE966037C (en) | 1957-07-04 |
Family
ID=7474325
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DES13499D Expired DE966037C (en) | 1943-02-23 | 1943-02-23 | Contact body and process for its manufacture |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE966037C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1241901B (en) * | 1963-08-24 | 1967-06-08 | Kb Awiazionnij I | Process for the production of collector lamellas and device for carrying out this process |
Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE302650C (en) * | ||||
US1657053A (en) * | 1926-10-09 | 1928-01-24 | Elkon Works Inc | Electrical contact |
DE541515C (en) * | 1928-03-27 | 1932-01-13 | I G Farbenindustrie Akt Ges | Manufacture of porous or non-porous shaped metal pieces by pressure or heat treatment or both of metal powders without melting |
CH169804A (en) * | 1932-07-18 | 1934-06-15 | Bosch Robert Ag | Break contact. |
US2053662A (en) * | 1933-11-24 | 1936-09-08 | Hardy Metallurg Company | Method of making electrical conductors |
AT146938B (en) * | 1934-05-23 | 1936-09-10 | Aeg | Alloys for electrical contacts. |
AT152806B (en) * | 1936-06-19 | 1938-03-10 | Molybdenum Co Nv | Objects whose surface is exposed to friction, such as bearings, bearing shells, stuffing boxes and the like. Like., From powdery, solidified by pressure and heat treatment metal-metalloid mixtures and processes for the production of these objects. |
DE689372C (en) * | 1934-05-04 | 1940-03-18 | Siemens & Halske Akt Ges | Process for making electrical contacts |
CH215491A (en) * | 1939-06-30 | 1941-06-30 | Conradty Fa C | Method for connecting a body made of charcoal to be assembled in an insulating manner to a part made of insulating material |
DE890987C (en) * | 1939-07-01 | 1953-09-24 | Conradty Fa C | Collectors made of coal, in particular collectors and slip rings |
DE755482C (en) * | 1939-09-02 | 1954-01-11 | Siemens & Halske A G | Process for the production of a contact body for electrical purposes |
-
1943
- 1943-02-23 DE DES13499D patent/DE966037C/en not_active Expired
Patent Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE302650C (en) * | ||||
US1657053A (en) * | 1926-10-09 | 1928-01-24 | Elkon Works Inc | Electrical contact |
DE541515C (en) * | 1928-03-27 | 1932-01-13 | I G Farbenindustrie Akt Ges | Manufacture of porous or non-porous shaped metal pieces by pressure or heat treatment or both of metal powders without melting |
CH169804A (en) * | 1932-07-18 | 1934-06-15 | Bosch Robert Ag | Break contact. |
US2053662A (en) * | 1933-11-24 | 1936-09-08 | Hardy Metallurg Company | Method of making electrical conductors |
DE689372C (en) * | 1934-05-04 | 1940-03-18 | Siemens & Halske Akt Ges | Process for making electrical contacts |
AT146938B (en) * | 1934-05-23 | 1936-09-10 | Aeg | Alloys for electrical contacts. |
AT152806B (en) * | 1936-06-19 | 1938-03-10 | Molybdenum Co Nv | Objects whose surface is exposed to friction, such as bearings, bearing shells, stuffing boxes and the like. Like., From powdery, solidified by pressure and heat treatment metal-metalloid mixtures and processes for the production of these objects. |
CH215491A (en) * | 1939-06-30 | 1941-06-30 | Conradty Fa C | Method for connecting a body made of charcoal to be assembled in an insulating manner to a part made of insulating material |
DE890987C (en) * | 1939-07-01 | 1953-09-24 | Conradty Fa C | Collectors made of coal, in particular collectors and slip rings |
DE755482C (en) * | 1939-09-02 | 1954-01-11 | Siemens & Halske A G | Process for the production of a contact body for electrical purposes |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1241901B (en) * | 1963-08-24 | 1967-06-08 | Kb Awiazionnij I | Process for the production of collector lamellas and device for carrying out this process |
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