DE886779C - Process for the production of resistors - Google Patents

Process for the production of resistors

Info

Publication number
DE886779C
DE886779C DEL9830A DEL0009830A DE886779C DE 886779 C DE886779 C DE 886779C DE L9830 A DEL9830 A DE L9830A DE L0009830 A DEL0009830 A DE L0009830A DE 886779 C DE886779 C DE 886779C
Authority
DE
Germany
Prior art keywords
resistance
disks
resistors
production
smaller
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
DEL9830A
Other languages
German (de)
Inventor
Willy Dr-Ing Rabus
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.)
Licentia Patent Verwaltungs GmbH
Original Assignee
Licentia Patent Verwaltungs GmbH
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 Licentia Patent Verwaltungs GmbH filed Critical Licentia Patent Verwaltungs GmbH
Priority to DEL9830A priority Critical patent/DE886779C/en
Application granted granted Critical
Publication of DE886779C publication Critical patent/DE886779C/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
    • H01C7/10—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 voltage responsive, i.e. varistors
    • 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
    • H01C7/10—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 voltage responsive, i.e. varistors
    • H01C7/105—Varistor cores
    • 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
    • H01C7/10—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 voltage responsive, i.e. varistors
    • H01C7/12—Overvoltage protection resistors

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Thermistors And Varistors (AREA)

Description

Verfahren zur Herstellung von Widerständen Das Verfahren bezieht sich auf die Herstellung von elektrischen Widerständen, insbesondere von spannungsabhängigen Widerständen für Überspannungsableiter, die aus .dem Gemisch eines halbleitenden Materials mit einem keramischen Binder bestehen. Dieses Stoffgemisch wird in entsprechender Proportionierung zu Platten verhältnismäßig großen Durchmessers verpreßt, getrocknet und gebrannt. Zur Erzeugung eines bestimmten Widerstandswertes für dieGesamtanlagewerdendann auf diese Weise hergestellte Widerstandsscheiben in entsprechender Anzahl übereinandergelegt. Damit ein möglichst widerstandsfreier Stromübergang von Scheibe zu Scheibe erfolgt, werden die Widerstandsscheiben möglichst auf beiden Seiten mit einem Kontaktbelag versehen. Dieses Produktionsverfahren bringt es mit sich, .daß kleinste Widerstände herstellungsgemäß nahezu genau soviel Arbeitsaufwand erfordern wie große, so daß der Preis kleiner Scheiben im Verhältnis zu dem der größeren relativ viel höher liegt. Die Erfindung zeigt ein Verfahren, nach dem, sich geometrisch kleinere Widerstände der vorgenannten Art, wie sie z. B. für Überspannungsableiter in Niederspannungsnetzen benötigt werden, auf erheblich wirtschaftlichere Art herstellen lassen. Das Verfahren besteht darin, daß man zunächst Widerstandsscheiben großen Durchmessers bei relativ kleiner Dicke herstellt, die dann zur Bildung von Widerständen kleineren Durchmessers zertrennt werden. Die Größe der zu zertrennenden Scheibe wird dabei so gewählt, daß sich ein günstiger Einheitspreis ergibt.Method of making resistors The method relates on the production of electrical resistances, especially voltage-dependent ones Resistors for surge arresters, which consist of a mixture of a semiconducting Material with a ceramic binder. This mixture of substances is in corresponding Proportioning to plates of relatively large diameter, pressed, dried and burned. Then, to generate a specific resistance value for the entire system Resistance disks produced in this way are placed one on top of the other in a corresponding number. So that the current transfer from pane to pane is as resistance-free as possible, If possible, the resistance disks should have a contact coating on both sides Mistake. This production process brings with it, that the smallest resistances according to production require almost exactly as much labor as large, so that the price of small discs is relatively much higher in relation to that of the larger ones lies. The invention shows a method according to which, geometrically smaller resistances of the aforementioned type, as z. B. for surge arresters in low-voltage networks are required, can be produced in a much more economical way. The procedure consists in that one first of all resistance disks with a large diameter at relatively smaller thickness, which then leads to the formation of resistors of smaller diameter be severed. The size of the pane to be cut is chosen so that that there is a favorable unit price.

Die großen Scheiben werden dann durch ein geeignetes Werkzeug, z. B. Diamanttrennscheiben oder Spezialtrennscheiben, oder durch Anritzen und nachträgliches Brechen in Widerstände kleineren Formats zerlegt. Dabei muß entweder dafür gesorgt werden, daß zur Erzielung einer großen elektrischen Überschlagsfestigkeit keine gefährlichen Kanten entstehen oder däß die entstandenen Kanten in einem späteren Arbeitsverfahren gebrochen werden.The large disks are then removed by a suitable tool, e.g. B. diamond cutting discs or special cutting discs, or by scoring and subsequent Breaking broken down into resistances of smaller format. It must either be taken care of be that to achieve a great electrical Flashover strength no dangerous edges arise or that the edges created in a later Working procedures are broken.

Es ist auch möglich, die zur Bildung der räumlich kleineren Widerstände erforderlichen Trennfugen gleich beim Pressen der großen Scheiben vorzupressen, so daß später die kleineren Scheiben nur abgebrochen werden müssen.It is also possible to form the spatially smaller resistances pre-press the required joints when pressing the large panes, so that later the smaller disks only have to be broken off.

Claims (1)

PATENTANSPRÜCHE: i. Verfahren zur Herstellung von elektrischen Widerständen, insbesondere von spannungsabhängigen Widerständen für Überspannungsableiter, die aus dem Gemisch eines halbleitenden Materials mit einem keramischen Bindemittel bestehen, dadurch gekennzeichnet, daß zunächst Widerstandsscheiben großen Durchmessers bei relativ kleiner Dicke hergestellt werden, die man dann zur Bildung kleinerer Widerstände zer= trenn t. a. Verfahren nach Anspruch i, dadurch gekennzeichnet, daß die ursprünglich große Widerstandsscheibe vor,dem Trennen auf beiden Seiten mit einem Kontaktbelag versehen wird. 3. Verfahren nach Anspruch i und »,dadurch gekennzeichnet, daß die Kanten der kleinen Widerstandsscheiben nachträglich bearbeitet werden. 4. Verfahren nach Anspruch i bis 3, dadurch gekennzeichnet, daß das Herstellen der Trennfugen für die Widerstandsscheiben durch Ritzen erfolgt. 5. Verfahren nach Anspruch i, a und 4, dadurch gekennzeichnet, daß die kleineren Widerstandsscheiben abgebrochen werden. 6. Verfahren nach Anspruch i und a; dadurch gekennzeichnet, .daß die Trennfugen vorgepreßt werden.PATENT CLAIMS: i. Process for the production of electrical resistors, especially of voltage-dependent resistors for surge arresters that from the mixture of a semiconducting material with a ceramic binder exist, characterized in that initially large diameter resistance disks can be made with relatively small thickness, which can then be used to form smaller Resistances disrupted. a. Method according to claim i, characterized in that that the originally large resistance disk is before the separation on both sides is provided with a contact coating. 3. The method according to claim i and », thereby characterized in that the edges of the small resistance disks are subsequently processed will. 4. The method according to claim i to 3, characterized in that the manufacture the joints for the resistance disks are made by scoring. 5. Procedure according to Claims i, a and 4, characterized in that the smaller resistance disks canceled. 6. The method according to claim i and a; characterized, .that the parting lines are pre-pressed.
DEL9830A 1951-08-14 1951-08-14 Process for the production of resistors Expired DE886779C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEL9830A DE886779C (en) 1951-08-14 1951-08-14 Process for the production of resistors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEL9830A DE886779C (en) 1951-08-14 1951-08-14 Process for the production of resistors

Publications (1)

Publication Number Publication Date
DE886779C true DE886779C (en) 1953-08-17

Family

ID=7258173

Family Applications (1)

Application Number Title Priority Date Filing Date
DEL9830A Expired DE886779C (en) 1951-08-14 1951-08-14 Process for the production of resistors

Country Status (1)

Country Link
DE (1) DE886779C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1199376B (en) * 1959-12-21 1965-08-26 John G Ruckelshaus Process for the production of layer resistors with a given surface area of the layer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1199376B (en) * 1959-12-21 1965-08-26 John G Ruckelshaus Process for the production of layer resistors with a given surface area of the layer

Similar Documents

Publication Publication Date Title
DE68910242T2 (en) Manufacture of abrasive products.
DE886779C (en) Process for the production of resistors
DE904461C (en) Three-layer chipboard
DE2101028A1 (en) Method of manufacturing semiconductor elements
EP0162508A1 (en) Process and apparatus for making multilayer ceramic capacitors
CH224046A (en) Voltage dependent resistance.
DE2642955C2 (en) Process for the production of insulating and insulating panels
DE395286C (en) Surge arresters
DE2115814C3 (en) Resistance paste and process for the production of an electrical thick-film resistor
DE1224649B (en) Hollow mold for molding ceramic bodies
AT389835B (en) METHOD FOR THE PRODUCTION OF SCRATCHES OR CUTTING KNIVES, IN PARTICULAR FOR THE PRODUCTION OF WOOD WOOL
DE435555C (en) Manufacture of discs
DE566556C (en) Method and device for the production of discs u. Like. Made of wood pulp for beer plates, documents, seals, etc.
DE2657928C3 (en) Device for eliminating the pressing waste that occurs when pressing brick moldings, in particular with roof tile moldings
DE764642C (en) Device for cutting out shapes, in particular round blanks for motor vehicle wheels, with a strip waste cutter
AT364513B (en) DEVICE FOR DISASSEMBLING INSULATING GLASS PANELS
DE897394C (en) Device for the production of sheet metal cuts for variable capacitors
DE426252C (en) Process for the production of Buchzuendholzplatten with spaced Zuendholzern
DE836270C (en) A punching and notching device consisting of V-shaped knives for preparing the right-angled bending of U-shaped structural steel
DE2316517C3 (en) Process for dividing a shaped body
EP0290810A3 (en) Disc-type milling cutter having plural cutting teeth
DE3409937C2 (en) Method (III) for separating elongated solid objects made of glass
DE821826C (en) Glass cutter
DE4322180A1 (en) Perforated films for thin-layer chromatography
DE485097C (en) Process for the production of laundry button parts with the material strips being fed through a set of dies