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DE755482C - Process for the production of a contact body for electrical purposes - Google Patents

Process for the production of a contact body for electrical purposes

Info

Publication number
DE755482C
DE755482C DES138530D DES0138530D DE755482C DE 755482 C DE755482 C DE 755482C DE S138530 D DES138530 D DE S138530D DE S0138530 D DES0138530 D DE S0138530D DE 755482 C DE755482 C DE 755482C
Authority
DE
Germany
Prior art keywords
parts
contact body
electrical purposes
intermediate layer
production
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
Application number
DES138530D
Other languages
German (de)
Inventor
Emil Burow
Guenther Dr Phil Ritzau
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.)
Siemens and Halske AG
Siemens Corp
Original Assignee
Siemens and Halske AG
Siemens Corp
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 Siemens and Halske AG, Siemens Corp filed Critical Siemens and Halske AG
Priority to DES138530D priority Critical patent/DE755482C/en
Application granted granted Critical
Publication of DE755482C publication Critical patent/DE755482C/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H11/00Apparatus or processes specially adapted for the manufacture of electric switches
    • H01H11/04Apparatus or processes specially adapted for the manufacture of electric switches of switch contacts
    • H01H11/048Apparatus or processes specially adapted for the manufacture of electric switches of switch contacts by powder-metallurgical processes

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Powder Metallurgy (AREA)
  • Manufacture Of Switches (AREA)

Description

Zum Herstellen von Kontaktkörpern für elektrische Zwecke ging man bisher so vor, daß der eigentliche Kontakt, der beispielsweise aus Wolfram besteht, und der der Befestigung am Träger dienende Nietsteg voneinander gesondert hergestellt und dann in einem weiteren Arbeitsgang durch Löten miteinander verbunden wurden. Hierdurch entsteht ein Körper, wie er in der Fig. i der Zeichnung schematisch gezeichnet ist. Der Teil a stellt den eigentlichen Kontakt dar, während der Teil b den Nietsteg, der beispielsweise aus Eisen besteht, bildet. Dazwischen befindet sich das Kupferlot c, durch das die Teile a. und b zu einem Ganzen verbunden werden.To manufacture contact bodies for electrical purposes, the previous approach was that the actual contact, which consists of tungsten, for example, and the rivet web used to fasten it to the carrier were manufactured separately from one another and then connected to one another by soldering in a further operation. This creates a body as shown schematically in FIG. 1 of the drawing. Part a represents the actual contact, while part b forms the rivet web, which is made of iron, for example. In between is the copper solder c, through which the parts a. and b be combined into a whole.

Durch die Erfindung wird nun ein Kontaktkörper vorgeschlagen, der einen wesentlich einfacheren Aufbau besitzt und somit auch leichter, schneller und billiger hergestellt werden kann. Bei dem neuen Kontaktkörper i,st das Material des eigentlichen Kontaktteiles nur schwer mit dem Material des diesen tragenden Nietsteges legierbar. Die Herstellung geschieht nun erfindungsgemäß derart, daß zwischen beide Teile eine Zwischenischicht aus einem sich mit den Materialien beider Teile weitgehend mischenden Material eingefügt wird, und daß alle drei Teile nach Übereinanderschichten der drei Pulverarten zusammengepreßt werden, wonach der so erhaltene Preßling gesintert wird.The invention now proposes a contact body which has a much simpler structure and thus also lighter, faster and can be produced cheaper. In the case of the new contact body i, st the material the actual contact part difficult with the material of this supporting The rivet bar can be alloyed. The production now takes place according to the invention in such a way that between the two parts an intermediate layer of one with the materials of both Parts largely mixing material is inserted, and that all three parts after Layers of the three types of powder are pressed together, after which the so obtained compact is sintered.

Der neue Kontakt ist in der Fig. 2 wiedergegeben, in der a: bzw. b wiederum den eigentlichen Kontaktteil bzw. den Nietsteg darstellen. Die Verbindung zwischen diesen beiden Teilen ist hierbei durch die metallische Zwischenschicht d gesichert.The new contact is shown in FIG. 2, in which a: or b again represent the actual contact part or the rivet web. The connection between these two parts is here by the metallic intermediate layer d secured.

Die Herstellung des neuen Körpers erfolgt nun so, daß in die Preßform zunächst das Pulver für den Nietsteg, beispielsweise Eisen, hierauf das Pulver für die Zwischenschicht, z. B. Nickel, und schließlich das eigentliche Kontaktpulver, beispielsweise Wolfram, eingebracht wird. Der Körper wird dann in nur einem einzigen Arbeitsgang zu einem einheitlichen Ganzen verpreßt "und schließlich gesintert.The production of the new body is now carried out in such a way that in the mold first the powder for the rivet web, for example iron, then the powder for the intermediate layer, e.g. B. Nickel, and finally the actual contact powder, for example tungsten is introduced. The body then turns into just one Operation "pressed into a uniform whole" and finally sintered.

Es ist selbstverständlich möglich, statt der genannten Metalle auch andere hierfür geeignete Materialien zu verwenden. Beispielsweise kann der eigentliche Kontaktteil auch aus einer Wolfram-Nickel-Legierung mit oder ohne Kupferzusatz oder auch aus Molybdän bestehen. In letzterem Fall kann man für die metallische Zwischenschicht an Stelle von Nickel beispielsweise Kobalt verwenden.It is of course possible, instead of the metals mentioned to use other suitable materials. For example, the actual Contact part also made of a tungsten-nickel alloy with or without the addition of copper or also consist of molybdenum. In the latter case, you can use the metallic intermediate layer instead of nickel, use cobalt, for example.

Claims (1)

PATENTANSPRÜCHE: i. Verfahren zur Herstellung eines Kontaktkörpers für elektrische Zwecke, bei dem das Material des eigentlichen Kontaktteiles und das Material des diesen tragenden Nietsteges nur schwer miteinander legierbar sind, dadurch gekennzeichnet, daß zwischen beide Teile eine Zwischenschicht aus einem sich mit den Materialien beider Teile weitgehend mischenden Material eingefügt- wird und daß alle drei Teile nach Übereinanderschichten der drei Pulverarten zusämmengepreßt werden, wonach der so erhaltene Preßling gesintert wird. a. Verfahren nach Anspruch i, dadurch gekennzeichnet, daß als Material für den Kontaktteil Wolfram oder eine Wolfram-Nickel-Legierung mit oder ohne Kupferzusatz, ferner für den Nietsteg Eisen und für die Zwischenschicht Nickel gewählt werden. 3. Kontaktkörper für elektrische Zwecke, hergestellt nach dem Verfahren nach Anspruch i oder 2. Zur Abgrenzung des Erfindungsgegenstands vom Stand der Technik sind im Erteilungsverfahren folgende Druckschriften in Betracht gezogen worden: Deutsche Patentschrift N r. 302 650; USA.-Patentschrift N r. 1 657 o53.PATENT CLAIMS: i. A method for producing a contact body for electrical purposes, in which the material of the actual contact part and the material of the rivet web carrying it are difficult to alloy with one another, characterized in that an intermediate layer of a material which largely mixes with the materials of both parts is inserted between the two parts - and that all three parts are pressed together after layering the three types of powder, after which the compact thus obtained is sintered. a. Method according to Claim i, characterized in that the material chosen for the contact part is tungsten or a tungsten-nickel alloy with or without the addition of copper, furthermore iron for the rivet web and nickel for the intermediate layer. 3. Contact body for electrical purposes, produced by the method according to claim i or 2. To differentiate the subject matter of the invention from the prior art, the following publications have been considered in the granting procedure: German Patent No. r. 302 650; U.S. Patent No. 1 657 o53.
DES138530D 1939-09-02 1939-09-02 Process for the production of a contact body for electrical purposes Expired DE755482C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DES138530D DE755482C (en) 1939-09-02 1939-09-02 Process for the production of a contact body for electrical purposes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES138530D DE755482C (en) 1939-09-02 1939-09-02 Process for the production of a contact body for electrical purposes

Publications (1)

Publication Number Publication Date
DE755482C true DE755482C (en) 1954-01-11

Family

ID=7540862

Family Applications (1)

Application Number Title Priority Date Filing Date
DES138530D Expired DE755482C (en) 1939-09-02 1939-09-02 Process for the production of a contact body for electrical purposes

Country Status (1)

Country Link
DE (1) DE755482C (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE966037C (en) * 1943-02-23 1957-07-04 Siemens Ag Contact body and process for its manufacture
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
FR2389216A1 (en) * 1977-04-28 1978-11-24 Siemens Ag PROCESS FOR MANUFACTURING A BRIDGE CONTACT
DE4205795A1 (en) * 1992-02-26 1993-09-02 Degussa Prepn. of moulded bodies from permeable composite materials - by impregnating porous base metal framework with silver@- or copper@- based alloy

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE302650C (en) *
US1657053A (en) * 1926-10-09 1928-01-24 Elkon Works Inc Electrical contact

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE302650C (en) *
US1657053A (en) * 1926-10-09 1928-01-24 Elkon Works Inc Electrical contact

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE966037C (en) * 1943-02-23 1957-07-04 Siemens Ag Contact body and process for its manufacture
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
FR2389216A1 (en) * 1977-04-28 1978-11-24 Siemens Ag PROCESS FOR MANUFACTURING A BRIDGE CONTACT
DE4205795A1 (en) * 1992-02-26 1993-09-02 Degussa Prepn. of moulded bodies from permeable composite materials - by impregnating porous base metal framework with silver@- or copper@- based alloy

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