DE744048C - Process for degreasing aluminum or magnesium powder - Google Patents

Process for degreasing aluminum or magnesium powder

Info

Publication number
DE744048C
DE744048C DEL196227D DEL0196227D DE744048C DE 744048 C DE744048 C DE 744048C DE L196227 D DEL196227 D DE L196227D DE L0196227 D DEL0196227 D DE L0196227D DE 744048 C DE744048 C DE 744048C
Authority
DE
Germany
Prior art keywords
powder
fat
magnesium powder
aluminum
degreasing
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
DEL196227D
Other languages
German (de)
Inventor
Ferdinand Lutz
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.)
Georg Benda Lutz Werke Ges M B
Original Assignee
Georg Benda Lutz Werke Ges M B
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 Georg Benda Lutz Werke Ges M B filed Critical Georg Benda Lutz Werke Ges M B
Priority to DEL196227D priority Critical patent/DE744048C/en
Application granted granted Critical
Publication of DE744048C publication Critical patent/DE744048C/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
    • B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
    • B22F1/14—Treatment of metallic powder
    • B22F1/142—Thermal or thermo-mechanical treatment

Landscapes

  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Processing Of Solid Wastes (AREA)

Description

Verfahren zum Entfetten von Aluminium- oder Magnesiumpulver Bei d: r Erzeugung von Aluminiumpulver ist es erforderlich, dem Ausgangsmaterial gewisse Mengen Fett zuzusetzen, welche den Stampfprozeß erleichtern. Für einige Zwecke wird aber fettfreies Pulver benötigt, so daß es notwendig ist, das Pulver vom Stampfmittel zu reinigen, es also zu entfetten. Jedoch stößt das Entfetten von Aluminiumpulver auf -besondere Schwierigkeiten.Procedure for degreasing aluminum or magnesium powder At d: For the production of aluminum powder it is necessary to give a certain amount of the starting material Add amounts of fat to facilitate the pounding process. For some purposes it will but fat-free powder is required, so it is necessary to remove the powder from the pounding agent to clean, i.e. to degrease it. However, degreasing aluminum powder hits on -special difficulties.

Nach dein Gegenstand der Erfindung erfolgt das Entfetten des Metallpulvers durch Wärme und am laufenden Band. Das Metallpulver wird vermittels eines Transportbandes an einer Wärmequelle, zweckiniillig elektrischer Art, vorbeigeführt, so daß eine Verflüchtigung des Fettes erfolgt. Die dabei entstehenden Dämpfe werden dauernd abgesaugt, wodurch der Verdampfungspunkt erniedrigt und verhindert wird, daß der Partialdruck der Fettd<iinpfe zu groß wird. Unmittelbar an die Erhitzung schließt sich eine rasche Abkühlung all.According to the subject matter of the invention, the metal powder is degreased through warmth and non-stop. The metal powder is transported by means of a conveyor belt passed a heat source, expediently electrical, so that a Volatilization of the fat takes place. The resulting vapors become permanent sucked off, which lowers the evaporation point and prevents the Partial pressure of the fat cup becomes too large. Immediately after the heating closes a rapid cooling all.

Das erfindungsgemäße Verfahren unterscheidet sich wesentlich von bekannten Verfahren zur Herstellung fettarmen bzw. fettfreien feinen Aluminiumpulvers, bei welchem w iilirend a des Zerkleinerungsvorganges t' des gefetteten Metall: eine Atmosphäre vorhanden ist, die so viel Sauerstoff enthält, daß auf den Pulverteilchen feine OYvdhäute entstehen und zuni Entfetten des erhaltenen Pulvers ein Vaktiuni zunächst ohne Erwärmung des Pulvers, dann bei steigender Erhitzung desselben zur Einwirkung gebracht wird.The method according to the invention differs significantly from known ones Process for the production of low-fat or fat-free fine aluminum powder which during the comminution process t 'of the greased metal: a There is an atmosphere that contains so much oxygen that on the powder particles fine OYvd skins are formed and the powder obtained is degreased with a vactiuni initially without heating the powder, then with increasing heating of the same to Action is brought.

Nach bekannten Verfahren erfolgt die Erhitzung des Metallpulvers in ruhendem Zustand, wobei die Gefahr einer Entzündung besteht, welche durch Bildung der Oxydhaut durch das Vakuum sowie dadurch abzuwehren versucht wird, daß schließlich ein indifferentes Gas nach dein Erkalten eingeleitet wird.According to known methods, the metal powder is heated in dormant state, with the risk of inflammation caused by education the oxide skin is tried to repel by the vacuum as well as that finally an indifferent gas is introduced after it has cooled down.

Durch das erfindungsgemäße Erhitzen von Aluminium- bzw. Magnesiumpulv er auf einem Transportband und unmittelbar anschließendes Abkühlen wird die Gefahr einer Entzündung vermieden.By heating aluminum or magnesium powder according to the invention putting it on a conveyor belt and immediately cooling it down becomes the danger avoid inflammation.

Auf der Zeichnung ist schematisch eitle beispielsweise Ausführungsform einer Einrichtung dargestellt, welche zur Durchführung des erfindungsgemäßen Entfettutlgsverfahrens geeignet ist.The drawing shows schematically an example embodiment a device shown which is used to carry out the degreasing process according to the invention suitable is.

Das Fetttnetallpulver a wird auf eine Futsche b o. dgl. auf das endlose Transportband c gefördert und all elektrischen Heizkörpern e vorbeigeführt, welche sich zweckmäßigerweise itn Boden der Entfettungskailliner befinden, während die durch Zersetzung und Verflüchtigung des Fettes eiltstandenen Dämpfe abgesaugt werden.The Fetttetalpulver a is on a cup b or the like. On the endless Conveyor belt c promoted and passed by all electric radiators e, which are expediently in the bottom of the degreasing chamber, while the Any vapors that may have formed due to the decomposition and volatilization of the fat can be extracted.

Nach Überschreiten der Heizvorrichtung gelangt das Metallpulver auf der Transportvorrichtung unmittelbar über eine Kühleinrichtung, zweckmäßig Kühlschlangen, und wird schließlich durch einen Sehaber g im entfetteten und gekühlten Zustande abgeleitet.After exceeding the heating device, the metal powder comes up the transport device directly via a cooling device, expediently cooling coils, and is finally greased and cooled by a seer derived.

Claims (1)

PATENTANSPRUCH: Verfahren zum Entfetten von Aluminium- oder Magnesiumpulver, dadurch gekennzeichnet, daß das aus der Zerkleinerungsvorrichtung kommende fette Metallpulver vermittels eines Transportbandes an einer Wärmequelle behufs Entfernung des an dein Metallpulver von der Erzeugung anhaftenden Fettes und unmittelbar anschließend all einer Kühlvorrichtung vorbeigeführt wird. Zur Abgrenzung des Anmeldungsgegenstandes vom Stand der Technik sind im Erteilungsverfahren folgende Druckschriften in Betracht gezogen worden: deutsche Patentschriften . . . . Nr. 529 0;q, 704 a23.PATENT CLAIM: Process for degreasing aluminum or magnesium powder, characterized in that the fat coming from the comminuting device Metal powder by means of a conveyor belt at a heat source for removal of the fat adhering to your metal powder from production and immediately thereafter all a cooling device is passed. To delimit the subject of the registration From the state of the art, the following publications are considered in the granting procedure been drawn: German patents. . . . No. 529 0; q, 704 a23.
DEL196227D 1941-11-11 1941-11-11 Process for degreasing aluminum or magnesium powder Expired DE744048C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEL196227D DE744048C (en) 1941-11-11 1941-11-11 Process for degreasing aluminum or magnesium powder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEL196227D DE744048C (en) 1941-11-11 1941-11-11 Process for degreasing aluminum or magnesium powder

Publications (1)

Publication Number Publication Date
DE744048C true DE744048C (en) 1944-01-08

Family

ID=7290487

Family Applications (1)

Application Number Title Priority Date Filing Date
DEL196227D Expired DE744048C (en) 1941-11-11 1941-11-11 Process for degreasing aluminum or magnesium powder

Country Status (1)

Country Link
DE (1) DE744048C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4221347A1 (en) * 1991-06-28 1993-01-14 Norsk Hydro As METHOD AND DEVICE FOR THE TREATMENT OF OIL-SOILED SHAVINGS MADE OF MAGNESIUM AND MAGNESIUM ALLOYS

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE529074C (en) * 1929-10-09 1931-07-08 Timken Roller Bearing Co Device to make metal waste suitable for containment in electric smelting furnaces by removing the oil adhering to it
DE704223C (en) * 1932-01-10 1941-03-26 Metallpulver A G Process and device for the production of low-fat or fat-free, fine aluminum powder

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE529074C (en) * 1929-10-09 1931-07-08 Timken Roller Bearing Co Device to make metal waste suitable for containment in electric smelting furnaces by removing the oil adhering to it
DE704223C (en) * 1932-01-10 1941-03-26 Metallpulver A G Process and device for the production of low-fat or fat-free, fine aluminum powder

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4221347A1 (en) * 1991-06-28 1993-01-14 Norsk Hydro As METHOD AND DEVICE FOR THE TREATMENT OF OIL-SOILED SHAVINGS MADE OF MAGNESIUM AND MAGNESIUM ALLOYS
US5338335A (en) * 1991-06-28 1994-08-16 Norsk Hydro A.S. Method for treatment of oil contaminated filings of magnesium and magnesium alloys
DE4221347C2 (en) * 1991-06-28 1998-06-04 Norsk Hydro As Process for the treatment of oil-contaminated chips made of magnesium and magnesium alloys

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