DE899893C - Process for making iron powder - Google Patents

Process for making iron powder

Info

Publication number
DE899893C
DE899893C DEP3274A DEP0003274A DE899893C DE 899893 C DE899893 C DE 899893C DE P3274 A DEP3274 A DE P3274A DE P0003274 A DEP0003274 A DE P0003274A DE 899893 C DE899893 C DE 899893C
Authority
DE
Germany
Prior art keywords
iron
iron powder
carbon
carbon alloy
making 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
DEP3274A
Other languages
German (de)
Inventor
Dr-Ing Gerhard Naeser
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.)
Vodafone GmbH
Original Assignee
Mannesmann 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 Mannesmann AG filed Critical Mannesmann AG
Priority to DEP3274A priority Critical patent/DE899893C/en
Application granted granted Critical
Publication of DE899893C publication Critical patent/DE899893C/en
Expired legal-status Critical Current

Links

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
    • B22F9/02—Making metallic powder or suspensions thereof using physical processes
    • B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
    • B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
    • B22F9/10—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying using centrifugal force

Description

Verfahren zum Herstellen von Eisenpulver Die Erfindung betrifft ein Verfahren zum Herstellen von Eisenpulver, das eine gute Verpreßbarkeit und Sinterfähigkeit besitzt. Beide Eigenschaften hängen von,der Gestalt :der einzelnen Eisenkörnchen ab. Eine besonders günstige Kornform erhält man dann, wenn man gemäß der Erfindung als Vormaterial eine flüssige Eisen-Köhlenstoff-Legierung mit 3 .bis q.°/9 Kohlenstoff verwendet, ferner zur Zerstäubung dieser Legierung eine rotierende Scheibe benutzt und schließlich !die Oxydation beim Zerstäuben der Eisen-Kohlenstoff-Legierung durch oxydierende Gase, z. B. Luft, hervorruft, die auf die rotierende Scheibe oder im Abstand von der Seheibe auf die zerstäubte Eisen-Kohlenstoff-Legierung gerichtet wird. Man erhält dann ein Eisenpulver mit hohem Kohlenstoffgehalt und entsprechend hohem Sauerstoffgehalt mit der gelvünschten, günstigen Kornform.Method of making iron powder The invention relates to a Process for the production of iron powder that has good compressibility and sinterability owns. Both properties depend on the shape: the individual iron granules away. A particularly favorable grain shape is obtained if, according to the invention a liquid iron-carbon alloy with 3. to q. ° / 9 carbon as the starting material used, also used a rotating disk to atomize this alloy and finally! the oxidation during the atomization of the iron-carbon alloy oxidizing gases, e.g. B. air, which causes on the rotating disk or in Distance from the window to the atomized iron-carbon alloy will. An iron powder with a high carbon content and correspondingly is then obtained high oxygen content with the desired, favorable grain shape.

Der Vorschlag, nicht mehr von flüssigem weichem Stahl, sondern von flüssigem, höher gekohltemEisen auszugehen, ist bereits an anderer Stelle gemacht worden und stellt für sich allein mithin nicht :den Gedanken der Erfindung !dar. Das Verdüsen von flüssigem Eisen mittels Preßluft, ebenso die Zerstäubung durch Sdhleuderscheiben sind bekannt.The proposal, no longer from molten soft steel, but from Going out of liquid, higher carbon iron has already been done elsewhere and therefore does not in itself represent: the idea of the invention! The atomization of liquid iron by means of compressed air, as well as atomization Sdhleuderscheiben are known.

Gegenstand der Erfindung ist ,die Kombination der ,drei oben in Absatz i erwähnten Merkmale. An Stelle von Luft können auch andere oxydierende Gase verwendet werden. Zweckmäßig ist es, die Abgase abzusaugen. Die Höhe des ,Sauerstoffgehaltes des Eisenpulvers hängt von der Richtung des oxydierenden Gasstromes und von der in .der Zeiteinheit zugeführten Gasmenge ab.The subject of the invention is the combination of the, three above in paragraph i mentioned features. Other oxidizing gases can also be used instead of air will. It is useful to suck off the exhaust gases. The level of the, oxygen content of iron powder depends on the direction of the oxidizing gas flow and on the in .the unit of time supplied amount of gas.

Claims (2)

PATENTANSPRÜCHE: i. Verfahren zum Herstellen von Eisenpulver, gekennzeichnet durch die Vereinigung folgender drei Merkmale: i. Verwendung einer flüssigen Eisen-Kohlenstoff-Legierung mit 3 bis 4°/o Kohlenstoff, 2. Verwendung einer rotierenden Scheibe als Zerstäubungsmittel für die 3. Oxydation beim Zerstäuben der Eisen-Kohlenstoff-Legierung .durch oxydierende Gase, wie Luft, die auf die rotierende Scheibe oder im Abstand von der Scheibe auf die zerstäubte Eisen-Kohlenstoff-Legierung ;gerichtet werden. PATENT CLAIMS: i. Process for the production of iron powder, characterized by the combination of the following three features: i. Use of a liquid iron-carbon alloy with 3 to 4% carbon, 2. Use of a rotating disk as a sputtering agent for the 3rd oxidation when the iron-carbon alloy is sputtered by oxidizing gases, such as air, acting on the rotating Disc or at a distance from the disc at the atomized iron-carbon alloy; 2. Verfahren nach Anspruch i, dadurch gekennzeichnet, -daß die Abgase abgesaugt werden. Angezogene Druckschriften: Kieffer-Hotop, Sintereisen und Sinterstahl, Wien, -Springer-Verlag, 1948, S. 30 und 3 i.2. The method according to claim i, characterized in that the exhaust gases are sucked off. Printed publications: Kieffer-Hotop, Sintereisen und Sinterstahl, Vienna, -Springer-Verlag, 1948, pp. 30 and 3 i.
DEP3274A 1948-10-02 1948-10-02 Process for making iron powder Expired DE899893C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEP3274A DE899893C (en) 1948-10-02 1948-10-02 Process for making iron powder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEP3274A DE899893C (en) 1948-10-02 1948-10-02 Process for making iron powder

Publications (1)

Publication Number Publication Date
DE899893C true DE899893C (en) 1953-12-17

Family

ID=7358633

Family Applications (1)

Application Number Title Priority Date Filing Date
DEP3274A Expired DE899893C (en) 1948-10-02 1948-10-02 Process for making iron powder

Country Status (1)

Country Link
DE (1) DE899893C (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2936691A1 (en) 1979-09-11 1981-03-19 Itoh Metal Abrasive Co., Ltd., Nagoya, Aichi Spherical particle or fibre mfr. from melts - esp. from molten metals, fluxes or slags, using spinning plant to obtain solid particles with exact size
DE2954313C2 (en) * 1979-09-11 1986-06-19 Itoh Metal Abrasive Co., Ltd., Nagoya, Aichi Process for the production of spherical particles or fibers with a predetermined diameter from a melt
US10273567B2 (en) 2014-01-27 2019-04-30 Rovalma, S.A. Centrifugal atomization of iron-based alloys

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2936691A1 (en) 1979-09-11 1981-03-19 Itoh Metal Abrasive Co., Ltd., Nagoya, Aichi Spherical particle or fibre mfr. from melts - esp. from molten metals, fluxes or slags, using spinning plant to obtain solid particles with exact size
DE2954313C2 (en) * 1979-09-11 1986-06-19 Itoh Metal Abrasive Co., Ltd., Nagoya, Aichi Process for the production of spherical particles or fibers with a predetermined diameter from a melt
US10273567B2 (en) 2014-01-27 2019-04-30 Rovalma, S.A. Centrifugal atomization of iron-based alloys

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