DE619749C - Process for the production of metal powders with certain magnetic properties - Google Patents

Process for the production of metal powders with certain magnetic properties

Info

Publication number
DE619749C
DE619749C DE1930619749D DE619749DD DE619749C DE 619749 C DE619749 C DE 619749C DE 1930619749 D DE1930619749 D DE 1930619749D DE 619749D D DE619749D D DE 619749DD DE 619749 C DE619749 C DE 619749C
Authority
DE
Germany
Prior art keywords
magnetic properties
production
metal powders
certain magnetic
iron
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
DE1930619749D
Other languages
German (de)
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.)
Vacuumschmelze GmbH and Co KG
Original Assignee
Heraeus Vacuumschmelze 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 Heraeus Vacuumschmelze AG filed Critical Heraeus Vacuumschmelze AG
Application granted granted Critical
Publication of DE619749C publication Critical patent/DE619749C/en
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F9/00—Making metallic powder or suspensions thereof
    • B22F9/16—Making metallic powder or suspensions thereof using chemical processes
    • B22F9/18—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds
    • B22F9/20—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds starting from solid metal compounds
    • B22F9/22—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds starting from solid metal compounds using gaseous reductors

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)

Description

Verfahren zur Herstellung von Metallpulvern mit bestimmten magnetischen Eigenschaften Metalle und Legierungen mit besonderen magnetischen Eigenschaften werden häufig in feinkörniger oder pulverisierter Form benötigt, beispielsweise für die Kerne von Pupinspulen. Solche Kerne wurden ursprünglich aus Eisenpulver hergestellt, später ging man dazu über, Nickei-Eisen-Legierungenverschiedener Zusammensetzung zu erschmelzen und die durch Schmelzen und Gießen erhaltenen Stücke nachträglich zu pulverisieren.Process for the production of metal powders with certain magnetic Properties Metals and alloys with special magnetic properties are often required in fine-grained or powdered form, for example for the cores of pupin coils. Such cores were originally made from iron powder manufactured, later on, nickel-iron alloys of various compositions were used to melt and the pieces obtained by melting and casting subsequently to pulverize.

Einfacher und billiger lassen sich nach der Erfindung beispielsweise die Kerne von Pupinspulen dadurch herstellen, daß man die Nickel-Eisen-Legierungen unmittelbar inPulverform erzeugt, und zwar durch Reduzieren von Mischkristallen, die aus einem der verlangten Zusammensetzung des Endproduktes entsprechend gebildeten Gemisch von Eisen-und Nickelsalzen ausgeschieden sind.. Als Beispiel für derartige Salze seien die Chloride von Nickel und Eisen genannt. Das Kriterium dafür, daß beispielsweise aus einer Lösung eines Salzgemisches Mischkristalle auskristallisieren, liegt darin, daß das Verhältnis der metallischen Anteile der Kristalle dem Verhältnis der Metallanteile in der Lösung entspricht und daß es von der ersten bis zur letzten Fraktion annähernd gleichbleibt. Ein anderes Kriterium ist dadurch gegeben, daß nach dem Zusammenschmelzen von Salzgemischen, Erstarren und Auskristallisieren die zuerst und zuletzt erstarrten Anteile oder die zuerst und zuletzt auskristallisierten Anteile annähernd gleich zusammengesetzt sind.Easier and cheaper can be according to the invention, for example manufacture the cores of Pupin's coils by using the nickel-iron alloys produced directly in powder form by reducing mixed crystals, those formed from one of the required composition of the end product Mixture of iron and nickel salts are excreted .. As an example of such Salts are the chlorides of nickel and iron. The criterion that for example, crystallize mixed crystals from a solution of a salt mixture, lies in the fact that the ratio of the metallic components of the crystals to the ratio the amount of metal in the solution and that it is from the first to the last Fraction remains almost the same. Another criterion is given by the fact that after the melting of salt mixtures, solidification and crystallization portions that solidified first and last or those that crystallized out first and last Proportions are composed approximately the same.

Durch Versuche wurde festgestellt, daß Nickel-Eisen-Pulver verschiedener Zusammensetzung, die gemäß der Erfindung durch Reduzieren von Mischkristallen (bei den Versuchen wurden Chloride gewählt) gewonnen wurden, eine 5o bis ioo °/o höhere Permeabilität besaßen als Nickel-Eisen-Pulver mit demselben Mengenverhältnis an Nickel und Eisen, die entweder durch Reduktion aus einem gemeinsam gefällten Gemisch von Eisenhydroxyd und Nickelhydroxyd oder durch Schmelzen und nachträgliches Mahlen entsprechender Nickel-Eisen-Legierungen gewonnen wurden.Experiments have shown that nickel-iron powder is different Composition which, according to the invention, by reducing mixed crystals (at Chlorides were chosen for the experiments), a 50 to 100 per cent higher rate Permeability possessed as nickel-iron powder in the same proportion Nickel and iron, either by reduction from a jointly precipitated mixture of iron hydroxide and nickel hydroxide or by melting and subsequent grinding corresponding nickel-iron alloys were obtained.

Das Verfahren nach der Erfindung eignet sich für die Herstellung beliebig zusammengesetzter Pulver mit magnetischen Eigenschaften. Als wichtigste Bestandteile seien außer Eisen und Nickel beispielsweise noch Kobalt, Chrom, Molybdän, Kupfer, Mangan, Silicium und Silber genannt.The method according to the invention is suitable for production as desired composite powder with magnetic properties. As the most important components Beyond iron and nickel, for example, cobalt, chromium, molybdenum, copper, Called manganese, silicon and silver.

Claims (1)

PATENTANSPRÜCHE: i. Verfahren zur Herstellung von Metallpulvern mit bestimmten magnetischen Eigenschaften, gekennzeichnet durch Reduzieren von Kristallen, die aus der verlangten Zusammensetzung des Endproduktes entsprechend gebildeten Gemischen von Salzen der entsprechenden Metalle, insbesondere von Eisen- und Nickelsalzen, ausgeschieden sind. a. Kerne für Pupinspulen, dadurch gekennzeichnet, daß sie aus Pulvern angefertigt werden, die nach Anspruch i hergestellt sind. PATENT CLAIMS: i. Process for the production of metal powders with certain magnetic properties, characterized by reducing crystals which are precipitated from the required composition of the end product correspondingly formed mixtures of salts of the corresponding metals, in particular of iron and nickel salts. a. Cores for Pupin coils, characterized in that they are made from powders which are produced according to claim i.
DE1930619749D 1930-08-01 1930-08-01 Process for the production of metal powders with certain magnetic properties Expired DE619749C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE619749T 1930-08-01

Publications (1)

Publication Number Publication Date
DE619749C true DE619749C (en) 1935-10-05

Family

ID=6577376

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1930619749D Expired DE619749C (en) 1930-08-01 1930-08-01 Process for the production of metal powders with certain magnetic properties

Country Status (1)

Country Link
DE (1) DE619749C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE975431C (en) * 1939-08-02 1961-11-23 Siemens Ag Magnetic variometer, especially for high frequency purposes

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE975431C (en) * 1939-08-02 1961-11-23 Siemens Ag Magnetic variometer, especially for high frequency purposes

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