DE443911C - Process for the production of molded parts and tools, in particular drawing dies - Google Patents
Process for the production of molded parts and tools, in particular drawing diesInfo
- Publication number
- DE443911C DE443911C DEP43861D DEP0043861D DE443911C DE 443911 C DE443911 C DE 443911C DE P43861 D DEP43861 D DE P43861D DE P0043861 D DEP0043861 D DE P0043861D DE 443911 C DE443911 C DE 443911C
- Authority
- DE
- Germany
- Prior art keywords
- tools
- drawing dies
- production
- melting
- particular drawing
- 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
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/04—Making non-ferrous alloys by powder metallurgy
- C22C1/05—Mixtures of metal powder with non-metallic powder
- C22C1/051—Making hard metals based on borides, carbides, nitrides, oxides or silicides; Preparation of the powder mixture used as the starting material therefor
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Powder Metallurgy (AREA)
Description
Verfahren zum Herstellen von Formstücken und Werkzeugen, insbesondere Ziehsteinen. Zur Herstellung von harten Formstücken und Werkzeugen, insbesondere Ziehsteinen, sind verschiedene Verfahren bekannt geworden. Als Ausgangsmaterialien werden dabei die Carbide schwerschmelzender Metalle oder auch Legierungen solcher Metalle mit leichter schmelzenden vorgeschlagen. Die so hergestellten Formstücke zeigen häufig den Übelstand, daß sie zu spröde und porös sind oder daß sie nicht die genügende Härte aufweisen, tim als Werkzeug, z. B. als Ziehstein, für die Herstellung von Wolframdrähten dienen zu können.Process for the production of moldings and tools, in particular Drawing dies. For the production of hard moldings and tools, in particular Drawing dies, various processes have become known. As starting materials the carbides of refractory metals or alloys of such metals are used Metals with easier melting points are suggested. The fittings thus produced often show the disadvantage that they are too brittle and porous or that they are not have sufficient hardness, tim as a tool, e.g. B. as a drawing die, for the production of tungsten wires to be able to serve.
Nach der Erfindung gelingt es leicht, dichte, harte und ausreichend zähe Formstücke zu erhalten, welche die eben erwähnten Übelstände nicht aufweisen. Zur Herstellung solcher Formstücke dienen poröse Stücke eines hochschmelzenden Carbides, wie des Wolframs oder Molvb,däns. Diese Stücke können auf verschiedene Weise erhalten werden, z. B. kann -man das in Frage kommende Carbid oder ein Gemisch von Kohle und dem entsprechenden carh:idbildendenMetall pressen und die Stücke nachher sintern. Auch kann man so verfahren, daß man zunächst das carbidbildende Metall ohne Zusatz von Kohle in die gewünschte Form bringt, es undicht sintert und darauf carburiert. Das Carburieren kann :durch Tränken mit nach dem Glühen Kohle hinterlassenden Substanzen, wie Zuckerlösung, Teer usw., und darauffolgendes Erhitzen geschehen oder durch Erhitzen in einer Kohlenstoff abgebenden Atmosphäre, wie Leuchtgas, Kolilenoxvd usw., oder durch starkes Glühen der in Kohlepulver eingepackten Stücke oder in sonst bekannter Weise.According to the invention, it is easy, dense, hard and sufficient to obtain tough fittings that do not have the above-mentioned drawbacks. Porous pieces of a high-melting carbide are used to produce such shaped pieces. like tungsten or molvb, danish. These pieces can be obtained in different ways be e.g. B. can be the carbide in question or a mixture of coal and the corresponding carh: id-forming metal and then sinter the pieces. It is also possible to proceed in such a way that the carbide-forming metal is first added without any additive of coal in the desired shape, sintered it leaky and carburized on it. Carburizing can: by impregnation with substances that leave charcoal after annealing, such as sugar solution, tar, etc., and subsequent heating are done or by heating in a carbon-releasing atmosphere, such as luminous gas, Kolilenoxvd etc., or by strong glowing of the pieces wrapped in coal powder or otherwise known Way.
Dem wie beschrieben hergestellten porösen Carbidkörper wird darauf ein dichtes und zähes Gefüge verliehen, indem es mit einem leichter als ,das Carbid schmelzenden Metall, wie z. B. Eisen, getränkt wird. Dies geschieht am einfachsten dadurch; daß eine ausreichende Menge des Metalls mit der Oberfläche des Caribidkörpers in Berührung gebracht .und bis zum Schmelzen erhitzt wird,-wobei es aufgesar#t (eingeseigert) wird. Um das Einseigern zu erleichtern, wird eine möglichst große Oberfläche des Carbidkörpers mit dem Metall zusammengebracht, z. B. legt man auf eine Fläche größter Ausdehnung,des Formkörpers eine gewisse Menge Eisen (Eisenblech), seigert es ein und wiederholt den Vorgang an einer oder mehreren anderen Flächen. Im übrigen ist jedes Verfahren, welches das Ausfüllen der Poren im Formkörper mit geschmolzenem Metall ermöglicht, zur Anwendung geeignet. Zweckmäßig wird noch nach dem Aufsaugen des Metalls die Erhitzung etwas fortgesetzt, um eine mÖglichst gleichmäßige Verteilung des eingeseigerten Metalls zu erzielen.The porous carbide body produced as described is then applied a dense and tough structure imparted by it with a lighter than, the carbide melting metal, such as B. iron, is soaked. This is the easiest to do through this; that a sufficient amount of the metal with the surface of the caribide body brought into contact. and heated until it melts, -which it sar # t (segregated) will. In order to make it easier to use the Carbide body brought into contact with the metal, e.g. B. is placed on an area the largest Expansion, the molding a certain amount of iron (iron sheet), it segregates and repeat the process on one or more other surfaces. Otherwise is any process which involves filling the pores in the molded body with molten Metal enables suitable for use. It is still useful after vacuuming of the metal, the heating continues somewhat in order to distribute it as evenly as possible to achieve the segregated metal.
Die Härte und Zähigkeit der Formstücke ist so groß, -daß sie sich mit besonderem. Vorteil zur Herstellung von Ziehsteinen, auch für die harten Metalle, wie Wolfram und lfolvbidän, eignen. Auch können die Formstücke mancherlei andere Verwendung finden, z. B. für Werkzeuge zur Metallbearbeitung u. dgl.The hardness and toughness of the fittings is so great that they can with special. Advantage for the production of drawing dies, also for hard metals, like tungsten and lfolvbidän, are suitable. The fittings can also have many other options Find use, e.g. B. for tools for metalworking and the like.
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEP43861D DE443911C (en) | 1922-03-19 | 1922-03-19 | Process for the production of molded parts and tools, in particular drawing dies |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEP43861D DE443911C (en) | 1922-03-19 | 1922-03-19 | Process for the production of molded parts and tools, in particular drawing dies |
Publications (1)
Publication Number | Publication Date |
---|---|
DE443911C true DE443911C (en) | 1927-05-07 |
Family
ID=7379834
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEP43861D Expired DE443911C (en) | 1922-03-19 | 1922-03-19 | Process for the production of molded parts and tools, in particular drawing dies |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE443911C (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE752538C (en) * | 1938-06-05 | 1953-02-09 | Hans Vogt | Process for the production of machine parts subject to friction |
DE975130C (en) * | 1941-09-25 | 1961-08-24 | Deutsche Edelstahlwerke Ag | Use of an oxide-metal composite material for the production of objects with high durability |
DE977030C (en) * | 1943-07-10 | 1964-11-19 | Duria Werk Karl Kempf Ges Mit | Process for the production of molded bodies from boron carbide and addition of silicon and / or aluminum |
-
1922
- 1922-03-19 DE DEP43861D patent/DE443911C/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE752538C (en) * | 1938-06-05 | 1953-02-09 | Hans Vogt | Process for the production of machine parts subject to friction |
DE975130C (en) * | 1941-09-25 | 1961-08-24 | Deutsche Edelstahlwerke Ag | Use of an oxide-metal composite material for the production of objects with high durability |
DE977030C (en) * | 1943-07-10 | 1964-11-19 | Duria Werk Karl Kempf Ges Mit | Process for the production of molded bodies from boron carbide and addition of silicon and / or aluminum |
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