DE972927C - Process for the production of electrical resistance bodies, heating conductors or the like. - Google Patents

Process for the production of electrical resistance bodies, heating conductors or the like.

Info

Publication number
DE972927C
DE972927C DEP11418A DEP0011418A DE972927C DE 972927 C DE972927 C DE 972927C DE P11418 A DEP11418 A DE P11418A DE P0011418 A DEP0011418 A DE P0011418A DE 972927 C DE972927 C DE 972927C
Authority
DE
Germany
Prior art keywords
mixture
metal
sintered
cover layer
electrical resistance
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
DEP11418A
Other languages
German (de)
Inventor
Erich Fenner
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 AG
Original Assignee
Siemens AG
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 AG filed Critical Siemens AG
Priority to DEP11418A priority Critical patent/DE972927C/en
Application granted granted Critical
Publication of DE972927C publication Critical patent/DE972927C/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
    • H01C7/04—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material having negative temperature coefficient
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C17/00—Apparatus or processes specially adapted for manufacturing resistors
    • H01C17/06—Apparatus or processes specially adapted for manufacturing resistors adapted for coating resistive material on a base
    • H01C17/065—Apparatus or processes specially adapted for manufacturing resistors adapted for coating resistive material on a base by thick film techniques, e.g. serigraphy
    • H01C17/06506—Precursor compositions therefor, e.g. pastes, inks, glass frits
    • H01C17/06593—Precursor compositions therefor, e.g. pastes, inks, glass frits characterised by the temporary binder

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Manufacturing & Machinery (AREA)
  • Powder Metallurgy (AREA)
  • Resistance Heating (AREA)
  • Compositions Of Oxide Ceramics (AREA)

Description

Die Erfindung betrifft ein Verfahren zum Herstellen von elektrischen Widerstandskörpern, insbesondere von Heizleitern, die aus einer Mischung von leitenden Metallen und nichtleitenden Metallverbindungen bestehen. Die gepulverten Ausgangsstoffe werden in üblicher Weise in die gewünschte Form gebracht und dann gesintert.The invention relates to a method for producing electrical Resistance bodies, in particular of heating conductors, which consist of a mixture of conductive Metals and non-conductive metal compounds exist. The powdered raw materials are brought into the desired shape in the usual way and then sintered.

Durch die Erfindung soll das Ausformen wesentlich erleichtert werden, so daß es möglich ist, der Masse auf der Strangpres.se die gewünschte Form zu geben.The invention is intended to make the molding process much easier, so that it is possible to give the mass on the extrusion press the desired shape.

Erreicht wird dies nach der Erfindung dadurch, daß die Mischung aus den Ausgangsstoffen unter Verwendung eines Polyvinylalkoholzusatzes vor dem Ausformen und Sintern plastifiziert wird. Zweckmäßig wird der Masse ein Zusatz von einigen Prozenten einer Kalzium-Magnesium-Silikat-Mischung beigefügt. Als Ausgangsstoffe werden zweckmäßig die Metalle der Eisengruppe mit Silicium und einem oder mehreren nichtleitenden :Metalloxyden verwendet.This is achieved according to the invention in that the mixture of the starting materials using a polyvinyl alcohol additive before molding and sintering is plasticized. It is advisable to add a few to the mass Percentage added to a calcium-magnesium-silicate mixture. As starting materials the metals of the iron group with silicon and one or more are expedient non-conductive: metal oxides used.

Auf die angegebene Weise ist es möglich, die verschiedensten Formen elektrischer Widerstände oder Heizleiter herzustellen. Um z. B. bei in dieser Weise durch Sintern hergestellten Heizleitern eine isolierende Oberfläche zu bekommen, geht man erfindungsgemäß so vor, daß durch Glühen an Luft eine Deckschicht hergestellt wird, die gleichzeitig zunderbeständig ist. Diese Deckschicht kann aber auch durch einen besonderen Keramiküberzug erzeugt werden. An den Enden werden zweckmäßig Metalldrähte oder Stifte mit eingesintert, über die die Widerstände bzw. Heizleiter angeschlossen werden.In the specified way, it is possible to have the most varied of shapes to produce electrical resistors or heating conductors. To z. B. at in this way heat conductors manufactured by sintering to obtain an insulating surface, the procedure according to the invention is such that a top layer is produced by annealing in air which is also resistant to scaling. This top layer can, however, also through a special ceramic coating can be produced. Metal wires are expediently attached to the ends or pins are also sintered in, via which the resistors or heating conductors are connected will.

Zweckmäßig ist es, den metallkeramisch hergestellten Heizleiter, nachdem er mixt einer isolierenden Deckschicht versehen ist, unmittelbar mit Metall guter Wärmeleitfähigkeit zu umgießen. Dabei können die Anschlüsse an beiden Enden liegen, oder der Heizleiter ist innerhalb des Metalls in Schleifenform geführt, so daß die beiden Leitungsenden auf einer Seite heraustreten. Eine solche Ausführung käme z. B. für Tauchsieder in Frage.It is useful to use the metal-ceramic heating conductor after he mixes an insulating top layer, immediately good with metal Pour around thermal conductivity. The connections can be at both ends, or the heating conductor is looped within the metal, so that the step out on both ends of the cable on one side. Such a design would come, for. B. for immersion heaters in question.

In den Fig. i und .2 sind in Metall eingegossene, gemäß der Erfindung hergestellte Heizleiter schematisch gezeigt. Der mit einer isolierenden Deckschicht i versehene Heizleiter 2 liegt in dem Metallkörper guter Wämeleitfähigkeit, also z. B. Kupferkörper 3. An den Enden des Heizleiters sind die Zuleitungen q. mit eingesintert.In Figs. I and .2 are cast in metal, according to the invention produced heating conductors shown schematically. The one with an insulating top layer i provided heating conductor 2 lies in the metal body with good thermal conductivity, ie z. B. Copper body 3. The leads q are at the ends of the heating conductor. sintered in.

Die Fig. 2 zeigt einen in gleicher Weise hergestellten Heizleiter mit denselben Bezeichnungen. nur mit dem Unterschied, daß der Heizleiter hier in Schleifenforrn ausgebildet ist und die Zuleitungen 4 an derselben Seite herausgeführt sind. Das Eisen in den beschriebenen Widerstandskörpern kann auch durch Nickel, Kobalt, Kupfer, Aluminium oder Legierungen dieser Metalle untereinander bzw. mit Chrom oder Silicium ersetzt werden, während das A12 03 durch Oxydgemenge von A12 03, Si 02, Mg0, Ca0, Fee 03 und/oder BeO ersetzt werden kann.Fig. 2 shows a heating conductor produced in the same way with the same names. only with the difference that the heating element is here in Loop shape is formed and the leads 4 lead out on the same side are. The iron in the resistance bodies described can also be replaced by nickel, Cobalt, copper, aluminum or alloys of these metals with one another or with Chromium or silicon can be replaced, while A12 03 is replaced by a mixture of oxides from A12 03, Si 02, Mg0, Ca0, Fee 03 and / or BeO can be replaced.

Claims (7)

PATENTANSPRÜCHE: i. Verfahren zum Herstellen von elektrischen Widerstandskörpern, Heizleitern od. dgl. aus einer Mischung eines Metalls, z. B. Eisen, Nickel, Kobalt, Kupfer, Aluminium oder Legierungen. dieser Metalle untereinander mit Silicium einerseits und Aluminiumoxyd oder einem Metalloxydgemenge, z. B. Ale 03, Si 02. Mg O, Ca O, Fee 03 und/oder Be O andererseits, dadurch gekennzeichnet, daß die Mischung aus den Ausgangsstoffen unter Verwendung eines Polyvinylalkoholzusatzes vor dem Ausformen und Sintern p,lastifiziert wird. PATENT CLAIMS: i. Process for the production of electrical resistance bodies, Heat conductors od. The like. Made of a mixture of a metal, e.g. B. iron, nickel, cobalt, Copper, aluminum or alloys. of these metals with one another with silicon on the one hand and aluminum oxide or a mixture of metal oxides, e.g. B. Ale 03, Si 02. Mg O, Ca O, Fee 03 and / or Be O on the other hand, characterized in that the mixture of the starting materials using a polyvinyl alcohol additive before molding and sintering p, is lastified. 2. Verfahren nach Anspruch r, dadurch gekennzeichnet, daß der plastischen Masse mittels eines Strangpreßverfahrens die erforderliche Form gegeben wird. 2. The method according to claim r, characterized in that that the plastic mass by means of an extrusion process the required shape is given. 3. Verfahren nach Anspruch i und 2, dadurch gekennzeichnet, daß der zu sinternden Masse ein Zusatz von beigegeben wird. q.. 3. The method according to claim i and 2, characterized in that the an addition of is added to the mass to be sintered. q .. Verfahren nach Anspruch i bis 3, dadurch gekennzeichnet, daß die Oberfläche des gesinterten Körpers mit einer nichtleitenden und vorzugsweise auch zunderbeständigen Deckschicht versehen wird. Method according to claim i to 3, characterized in that the surface of the sintered body with provided with a non-conductive and preferably also scale-resistant cover layer will. 5. Verfahren nach Anspruch q., dadurch gekennzeichnet, daß die Deckschicht durch einen besonderen keramischen Überzug hergestellt wird. 5. The method according to claim q., Characterized in that the cover layer is made by a special ceramic coating. 6. Verfahren nach Anspruch 5, dadurch gekennzeichnet, daß die Deckschicht durch Glühen an Luft erzeugt wird. 6. The method according to claim 5, characterized in that the top layer is produced by annealing in air. 7. Verfahren nach den Ansprüchen i bis 6. dadurch gekennzeichnet, daß der mit einer isolierenden Deckschicht versehene Widerstandskörper mit Metall guter Wärmeleitfähigkeit umgossen wird. B. Verfahren nach den Ansprüchen i bis 7, dadurch gekennzeichnet, daß in den Widerstandskörper an beiden Enden Zuleitungen mit eingesintert werden. In Betracht gezogene Druckschriften: Deutsche Patentschrift Nr. 366 626; schweizerische Patentschrift Nr. 121 194; französische Patentschriften Nr. 860 309,883 630-, Die Technik, Bd. 2 (19q.7), S. 157, i58.7. The method according to claims i to 6, characterized in that the resistance body provided with an insulating cover layer is encapsulated with metal having good thermal conductivity. B. The method according to claims i to 7, characterized in that leads are sintered into the resistor body at both ends. Documents considered: German Patent No. 366 626; Swiss Patent No. 121 194; French patents No. 860 309,883 630- , Die Technik, Vol. 2 (19q.7), p. 157, i58.
DEP11418A 1948-10-02 1948-10-02 Process for the production of electrical resistance bodies, heating conductors or the like. Expired DE972927C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEP11418A DE972927C (en) 1948-10-02 1948-10-02 Process for the production of electrical resistance bodies, heating conductors or the like.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEP11418A DE972927C (en) 1948-10-02 1948-10-02 Process for the production of electrical resistance bodies, heating conductors or the like.

Publications (1)

Publication Number Publication Date
DE972927C true DE972927C (en) 1959-11-05

Family

ID=7363478

Family Applications (1)

Application Number Title Priority Date Filing Date
DEP11418A Expired DE972927C (en) 1948-10-02 1948-10-02 Process for the production of electrical resistance bodies, heating conductors or the like.

Country Status (1)

Country Link
DE (1) DE972927C (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE366626C (en) * 1920-06-30 1923-01-09 Julius Edgar Lilienfeld Dr High resistance
CH121194A (en) * 1926-06-08 1927-07-01 Kummler & Matter Ag Method for preventing the change in resistance during operation of non-metallic electrical resistors, in particular those which mainly consist of silicon carbide.
FR860309A (en) * 1938-10-17 1941-01-11 Improvements to electrical resistances serving as heating elements
FR883630A (en) * 1941-05-22 1943-07-09 Fides Gmbh Sintered body

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE366626C (en) * 1920-06-30 1923-01-09 Julius Edgar Lilienfeld Dr High resistance
CH121194A (en) * 1926-06-08 1927-07-01 Kummler & Matter Ag Method for preventing the change in resistance during operation of non-metallic electrical resistors, in particular those which mainly consist of silicon carbide.
FR860309A (en) * 1938-10-17 1941-01-11 Improvements to electrical resistances serving as heating elements
FR883630A (en) * 1941-05-22 1943-07-09 Fides Gmbh Sintered body

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