AT89660B - Magnetic core and method of making the same. - Google Patents

Magnetic core and method of making the same.

Info

Publication number
AT89660B
AT89660B AT89660DA AT89660B AT 89660 B AT89660 B AT 89660B AT 89660D A AT89660D A AT 89660DA AT 89660 B AT89660 B AT 89660B
Authority
AT
Austria
Prior art keywords
making
same
magnetic core
core
particles
Prior art date
Application number
Other languages
German (de)
Original Assignee
Ver Telephon Und Telegraphen F
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 Ver Telephon Und Telegraphen F filed Critical Ver Telephon Und Telegraphen F
Application granted granted Critical
Publication of AT89660B publication Critical patent/AT89660B/en

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  • Soft Magnetic Materials (AREA)
  • Powder Metallurgy (AREA)

Description

  

   <Desc/Clms Page number 1> 
 
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 EMI1.2 
 

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 EMI2.1 
 



   Eisen, welches durch Elektrolyse erhalten wird, kann aber zu kleinen Teilchen von einer für die   KernhersteIlung     geeigneten     Grösse   leicht vermahlen werden. 



   Bessere Resultate werden daher erzielt. wenn zur Herstellung eines Magnetkernes elektrolytisches Eisen benutzt wird und die Teilchen dieses Eisens ausgeglüht werden, bevor sie   komprimiert   werden, um den Kern zu bilden. 
 EMI2.2 
 es in kleine Stücke zerbrochen wurde. wie früher durch Mahlen in kleine Teilchen geteilt. 



   Es wurde gefunden. dass Kerne, die in der oben angegebenen Weise   zusammengesetzt   sind, in mechanischer hinsicht stark sowie fest. in   chemischer   Beziehung stabil, d. h. beständig sind und dass 
 EMI2.3 
 ausgezeichnete magnetische Stabilität und verhältnismässig hohe Permeabilität, welche Eigenschaften für telephonische Belastungsspulen von grossem Wert sind. Versuche haben gezeigt, dass bessere Resultate. sowohl in mechanischer als elektrischer Hinsieht. erzielt werden. wenn eher weiche als harte   Eisenteilehen verwendet werden und dass   die zum Formen benutzten Drücke so hoch als sie erzielt werden können, sein müssen.

   Vermutlich rührt dies davon her. dass bei Weicheisenteilehen der Druck. 
 EMI2.4 
 dass sie dauernd und innig ineineandergreifen. wodurch das spezifische Gewicht des Kernes auf den oben angegebenen hohen Wert gesteigert wird. Bei Harteisenteilehen und unter Verwendung niedriger oder hoher Drücke werden die Kerne in mechauischer Hinsicht schwach, wahrscheinlich zufolge des Bestrebens der Teilchen in ihre   ursprüngliche Lage zurückzukehren, wenn   der Druck aufhört, und diese Kerne haben 
 EMI2.5 
   Höchstdruck ungefähr 14.   090 kg pro Quadratzentimeter (200.000 Pfund pro 1   Quadratzoll engl.)   beträgt. 



   PATENT-ANSPRÜCHE :
1. Verfahren zur Herstellung von   Magnetkernen   besonders für Belastungsspulen und andere 
 EMI2.6 
 Material ein spezifisches   Gewicht zu geben,   das demjenigen des verwendeten Materials oder   ungefähr gleich   7 ist.



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   However, iron obtained by electrolysis can easily be ground into small particles of a size suitable for core manufacture.



   Better results are therefore achieved. when electrolytic iron is used to make a magnetic core and the particles of that iron are annealed before they are compressed to form the core.
 EMI2.2
 it was broken into small pieces. divided into small particles by grinding as before.



   It was found. that cores assembled in the manner indicated above are mechanically strong and solid. chemically stable, d. H. are constant and that
 EMI2.3
 excellent magnetic stability and relatively high permeability, which properties are of great value for telephone stress coils. Tests have shown better results. both mechanically and electrically. be achieved. when soft rather than hard iron parts are used and that the pressures used for molding must be as high as can be achieved.

   Presumably this stems from this. that with soft iron parts there is pressure.
 EMI2.4
 that they interlock permanently and intimately. whereby the specific weight of the core is increased to the high value given above. With hard iron parts and using low or high pressures, the cores become mechanically weak, probably due to the tendency of the particles to return to their original position when the pressure ceases and these cores have
 EMI2.5
   Maximum pressure is approximately 14,090 kg per square centimeter (200,000 pounds per 1 square inch).



   PATENT CLAIMS:
1. Process for the production of magnetic cores especially for load coils and others
 EMI2.6
 To give material a specific gravity which is that of the material used or approximately equal to 7.

Claims (1)

2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass die zur Herstellung des Kernes oder Kernmaterials verwendeten Teilchen vor ihrer Behandlung sortiert oder gesieht werden, damit d'c Teilchen wesentlich gleiche Grösse erhalten. 2. The method according to claim 1, characterized in that the particles used to manufacture the core or core material are sorted or viewed prior to their treatment, so that the particles are substantially the same size.
AT89660D 1915-12-10 1917-05-15 Magnetic core and method of making the same. AT89660B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US85693XA 1915-12-10 1915-12-10
AT89660T 1917-05-15

Publications (1)

Publication Number Publication Date
AT89660B true AT89660B (en) 1922-10-10

Family

ID=25605187

Family Applications (1)

Application Number Title Priority Date Filing Date
AT89660D AT89660B (en) 1915-12-10 1917-05-15 Magnetic core and method of making the same.

Country Status (1)

Country Link
AT (1) AT89660B (en)

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