DE431906C - Production of clean metal cores - Google Patents
Production of clean metal coresInfo
- Publication number
- DE431906C DE431906C DEH97135D DEH0097135D DE431906C DE 431906 C DE431906 C DE 431906C DE H97135 D DEH97135 D DE H97135D DE H0097135 D DEH0097135 D DE H0097135D DE 431906 C DE431906 C DE 431906C
- Authority
- DE
- Germany
- Prior art keywords
- metal
- liquid
- production
- collecting liquid
- respect
- 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
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
-
- 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
- B22F9/082—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 atomising using a fluid
- B22F2009/086—Cooling after atomisation
- B22F2009/0864—Cooling after atomisation by oil, other non-aqueous fluid or fluid-bed cooling
Landscapes
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
Description
Herstellung sauberer Metallkörnungen. Es ist bekannt, Metalle, wie z. B. Eisen oder Kupfer, dadurch zu granulieren, daß man dasMetall flüssig in einen Wasserbehälter gießt, in welchem schnell ein Besen hin und her bewegt wird oder auf andere Weise für schnellste Bewegung des Wassers Sorge getragen wird. Man erhält auf diesem Wege ziemlich große :Metallkörner, die mit einer dünnen Oxcdschicht überzogen sind, welche um so leichter auftritt und sich um so ungünstiger auswirkt, je kleiner die Korngröße ist.Production of clean metal grains. It is known to like metals z. B. iron or copper, by granulating that the metal in a liquid Pours water container in which a broom is quickly moved back and forth or another way of ensuring the fastest movement of the water. You get in this way quite large: metal grains coated with a thin layer of oxide are, which occurs the more easily and has a more unfavorable effect, the smaller the grain size is.
Als Auffangeflüssigkeit für das zerteilte flüssige Metall hat man außer Wasser auch bereits zur Erzielung bestimmter chemischer Beschaffenheiten des Endproduktes wäßrige Lösungen von Chemikalien vorgeschlagen. Auch hat man bereits vorgeschlagen, bei der Herstellung von Schrot aus Metallen mit einem verhältnismäßig niedrigen Schmelzpunkt das flüssige zerteilte Metall in einer Flüssigkeit aufzufangen, deren Siedepunkt höher liegt als der Schmelzpunkt des Metalls, um ein -Verdampfen der Flüssigkeit in der 'Nähe des geschmolzenen Metalls zu verhindern und eine Kugelbildung des geschinolzen2n Materials zu begünstigen.As a collecting liquid for the divided liquid metal one has in addition to water, it is also used to achieve certain chemical properties of the Proposed final product aqueous solutions of chemicals. Also one already has proposed in the manufacture of shot from metals with a proportionate low melting point to collect the liquid broken metal in a liquid, whose boiling point is higher than the melting point of the metal in order to evaporate to prevent the liquid near the molten metal and ball formation of the melted material.
Die Erfindung verfolgt demgegenüber den Zweck, saubere, d. h. oxcdfreie Metallteilchen auch bei feinster Körnung aus den verschiedenen Metallen, auch schwerschmelzenden, z. B. Kupfer, Eisen, Zink, Zinn, Aluminium usw., und deren Legierungen zu erzielen. Dies Rar mit Hilfe der bekannten Verfahren nur mit erheblichen Schwierigkeiten oder gar nicht zu erreichen.In contrast, the invention pursues the purpose of providing clean, i.e. H. oxcd-free Metal particles even with the finest grains from the various metals, including low-melting ones, z. B. copper, iron, zinc, tin, aluminum, etc., and their alloys. This rarity with the help of the known method only with considerable difficulty or not reachable at all.
Das Verfahren besteht darin, daß das Metall in eine Flüssigkeit, die auf das Metall i nicht oxidierend wirken kann, sondern zweckmäßig selbst noch vorhandene Oxydspuren von dein Metall durch Reduktion entfernt, gegossen wird. Als geeignete Flüssigkeiten werden benutzt hochsiedende organische Flüssigkeiten, zweckmäßig solche, die keinen Sauerstoff enthalten.The method consists in that the metal is in a liquid that can not have an oxidizing effect on the metal i, but expediently still present itself Oxide traces are removed from your metal by reduction, is poured. As suitable Liquids are used high-boiling organic liquids, expediently those which do not contain oxygen.
Besonders geeignet ist geschmolzenes Paraffin, Tetralin u. dgl. oder Gemenge daraus. Eine weitere Durchbildung des Verfahrens besteht darin, daß beim Gießen die Oberfläche der Flüssigkeit mit einer Schicht von indifferenten Gasen, zweckmäßig eines solchen, das schwerer ist als Luft, z. B. Kohlensäure, überschichtet wird, um die Otvdation des Strahles der Metallteilchen vor dem Eintritt in die Flüssigkeit hintanzuhalten. Da die Dämpfe der meisten der in Betracht kommenden Flüssigkeiten mit Luft ein explosives Gemenge ergeben, welches durch das glühende flüssige Metall gezündet «-erden kann, so ergibt die Schutzschicht gleichzeitig den Vorteil, daß sie Explosionen verhindert; außerdem wird durch die indiffe-') Von dem Patettsucher ist als der Erfinder an5ebeben worden: Dz-. Emil Po ds;zzs in Fr-iedrichsha,zezz b. Berlin. rente Gasschicht gleichzeitig die Entzündung der Flüssigkeit, wenn sie brennbar ist, verhindert.Molten paraffin, tetralin and the like, or mixtures thereof, are particularly suitable. Another embodiment of the method is that when pouring the surface of the liquid with a layer of inert gases, expediently one that is heavier than air, e.g. B. carbonic acid, is overlaid to prevent the Otvdation of the jet of metal particles from entering the liquid. Since the vapors of most of the liquids in question produce an explosive mixture with air, which can be ignited by the glowing liquid metal, the protective layer also has the advantage that it prevents explosions; in addition, through the indiff- ') From the patette seeker has been an5ebeben as the inventor: Dz-. Emil Po ds; zzs in Fr-iedrichsha, zezz b. Berlin. retired gas layer at the same time prevents the liquid from igniting, if it is flammable.
In der Praxis übt man das Verfahren vorteilhaft in der Weise aus, daß man die Zerteilung des flüssigen Metallstrahles in einem Behälter vornimmt, der in seinem unteren Teil mit der Aufnahmeflüssigkeit, im oberen Teil mit dem indifferenten Gase gefüllt ist.In practice, the procedure is advantageously carried out in such a way that that the liquid metal jet is broken up in a container, the lower part with the receiving liquid, the upper part with the indifferent Gases is filled.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEH97135D DE431906C (en) | 1924-05-08 | 1924-05-08 | Production of clean metal cores |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEH97135D DE431906C (en) | 1924-05-08 | 1924-05-08 | Production of clean metal cores |
Publications (1)
Publication Number | Publication Date |
---|---|
DE431906C true DE431906C (en) | 1926-07-19 |
Family
ID=7167740
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEH97135D Expired DE431906C (en) | 1924-05-08 | 1924-05-08 | Production of clean metal cores |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE431906C (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1179618B (en) * | 1959-12-31 | 1964-10-15 | Siemens Ag | Process for making sintered thermocouple legs |
DE1209755B (en) * | 1962-06-29 | 1966-01-27 | Siemens Ag | Process for the manufacture of semiconductor components |
DE1224125B (en) * | 1960-12-22 | 1966-09-01 | Siemens Ag | Method and device for producing granules from molten metals or metal alloys |
-
1924
- 1924-05-08 DE DEH97135D patent/DE431906C/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1179618B (en) * | 1959-12-31 | 1964-10-15 | Siemens Ag | Process for making sintered thermocouple legs |
DE1224125B (en) * | 1960-12-22 | 1966-09-01 | Siemens Ag | Method and device for producing granules from molten metals or metal alloys |
DE1209755B (en) * | 1962-06-29 | 1966-01-27 | Siemens Ag | Process for the manufacture of semiconductor components |
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