DE3710882A1 - Method of manufacturing foils, sheets or the like formed from pulverulent materials by means of explosive methods - Google Patents
Method of manufacturing foils, sheets or the like formed from pulverulent materials by means of explosive methodsInfo
- Publication number
- DE3710882A1 DE3710882A1 DE19873710882 DE3710882A DE3710882A1 DE 3710882 A1 DE3710882 A1 DE 3710882A1 DE 19873710882 DE19873710882 DE 19873710882 DE 3710882 A DE3710882 A DE 3710882A DE 3710882 A1 DE3710882 A1 DE 3710882A1
- Authority
- DE
- Germany
- Prior art keywords
- procedure according
- powder layer
- characterized net
- above forthcoming
- explosive
- 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.)
- Ceased
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
- B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
- B22F7/02—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite layers
-
- 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
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/02—Compacting only
- B22F3/08—Compacting only by explosive forces
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Materials Engineering (AREA)
- Laminated Bodies (AREA)
Abstract
Description
Die Erfindung bezieht sich auf ein Verfahren zur Herstellung von aus pulverförmigen Werkstoffen gebildeten Folien, Blechen od. dgl.The invention relates to a method for Manufacture from powdery materials formed foils, sheets or the like.
Zahlreiche verschiedene, metallische, keramische oder aus Kunststoff bestehende Bauteile sind miteinander nach den bisher in der Technik bekannten Verfahren nicht zu verbinden oder die Verbindungen weisen eine so geringe Qualität auf, daß sie für prakti sche Ziele ungeeignet sind. In der chemischen Indu strie, in der Luft- und Raumfahrt, in der Elektro- und Elektronenindustrie besteht aber die Forderung nach sogenannten vielschichtigen Kompositstoffen mit verstärkten Strukturen, die mit dem bisher be kannten Verfahren durch Sintern, HIP-Verfahren oder Löten nicht herzustellen sind. So ist z.B. das Her stellen von Blechen oder Folien aus Wolfram oder Chrom sehr aufwendig und nur auf elektrochemischem Wege möglich und trotzdem entsprechen die herge stellten Produkte nicht den gestellten Anforde rungen, da sie häufig zu porös sind.Numerous different, metallic, ceramic or Plastic components are with each other according to the methods previously known in the art not to connect or point the connections such a low quality that it is practi targets are unsuitable. In the chemical indu in the aerospace and electrical industries and the electronics industry, however, there is a demand for so-called multi-layer composite materials with reinforced structures, which with the previously be known processes by sintering, HIP processes or Soldering cannot be made. For example, the fro make of sheets or foils of tungsten or Chromium very complex and only on electrochemical Paths possible and still the same products did not meet the requirements because they are often too porous.
Der Erfindung liegt die Aufgabe zugrunde, aus pul verförmigen Werkstoffen gebildete Folien oder Bleche zu erzielen, die den in der Industrie an sie ge stellten Anforderungen entsprechen, wobei trotzdem das Herstellungsverfahren nicht zu aufwendig sein soll. The invention has for its object from pul deformed materials formed foils or sheets to achieve the ge in industry meet the requirements, but still the manufacturing process should not be too complex should.
Diese der Erfindung zugrundeliegende Aufgabe wird durch die Lehre des Hauptanspruches gelöst.This object underlying the invention will solved by the teaching of the main claim.
Vorteilhafte Ausgestaltungen sind in den Unteran sprüchen erläutert.Advantageous configurations are in the Unteran sayings explained.
Mit anderen Worten ausgedrückt, schlägt die Erfin dung vor, daß Pulver - und häufig vielschichtige Pulver - zwischen zwei Widerlager gelegt werden, die als Schutzbleche ausgebildet sind, wobei die Pulver schicht in einem vorgepreßten Zustand sein kann, wo bei dann die Schicht in einem Gewicht vorliegt, das etwa 80% des theoretischen Gewichtes entspricht. Dann werden die Außenseiten der Schutzbleche mit Sprengstoff beschichtet und gezündet, wobei darauf zu achten ist, daß die Schutzbleche aus einem Werk stoff bestehen, der solche physikalischen Parameter aufweist, daß diese Schutzbleche nicht mit der Pul verschicht verschweißbar sind, was in einfacher Weise dadurch erreicht wird, daß die Schutzbleche eine Schallgeschwindigkeit aufweisen, die wesentlich höher oder niedriger als die Schallgeschwindigkeit der Pulverschicht liegt.In other words, the invention proposes that powders - and often multi-layer powders - are placed between two abutments which are designed as mudguards, the powder layer being in a pre-compressed state, where then the layer is in one weight is present, which corresponds to about 80% of the theoretical weight. Then the outside of the mudguards are coated with explosives and ignited, taking care that the mudguards consist of a material that has such physical parameters that these mudguards cannot be welded to the pul layer, which is achieved in a simple manner is that the fenders have a speed of sound that is significantly higher or lower than the speed of sound of the powder layer.
Anschließend können die so hergestellten verdich teten Bauteile weiteren chemischen Verfahren unter zogen werden, beispielsweise gesintert oder chemisch bearbeitet werden.Then the compression can be made components subjected to further chemical processes are drawn, for example sintered or chemically to be edited.
Ein Ausführungsbeispiel der Erfindung zeigt die Schemadarstellung.An embodiment of the invention shows the Schematic representation.
In der Zeichnung ist mit 1 eine Pulverschicht be zeichnet, die aus drei Komponenten aufgebaut ist, nämlich der Komponente 2, der Komponente 3 und der Komponente 4. Diese Pulverschicht wird zwischen zwei Schutzbleche 5 und 6 angeordnet, die nach außen hin durch Seitenbegrenzer 8 und 9 die Pulverschicht in ihrer Lage hält. Anschließend werden bei dem dargestellten Ausführungsbeispiel beide Seiten der Schutzbleche 5 und 6 mit einer Sprengstoffschicht 10 und 11 belegt, die dann über die Zündeinrichtung 12 bzw. 14 gezündet wird.In the drawing, 1 denotes a powder layer which is composed of three components, namely component 2 , component 3 and component 4 . This powder layer is arranged between two mudguards 5 and 6 , which holds the powder layer in position by means of side delimiters 8 and 9 . Then, in the exemplary embodiment shown, both sides of the mudguards 5 and 6 are coated with an explosive layer 10 and 11 , which is then ignited via the ignition device 12 and 14, respectively.
Hierbei ist es möglich, daß in die Pulverschicht gestreckte Bleche, Lochbleche, Netze oder Faser schichten eingelegt werden, wobei diese Zusatzbau teile, die die Festigkeit erhöhen sollen, aus me tallischen oder nichtmetallischen Werkstoffen gebil det werden können. Auch können keramische oder me tallische Bauteile hier eingesetzt werden.It is possible that in the powder layer stretched sheets, perforated sheets, nets or fibers Layers are inserted, this additional building parts that should increase the strength from me metallic or non-metallic materials can be detected. Also ceramic or me metallic components are used here.
Die so gewonnenen Schichten weisen unterschiedliche Festigkeit, unterschiedliche Wärmeleitfähigkeiten und unterschiedliche Stromleiteigenschaften auf und können über das erfindungsgemäße Verfahren doch als fester Baukörper hergestellt werden.The layers obtained in this way have different ones Strength, different thermal conductivities and different current conduction properties on and can but as the process of the invention solid structure can be produced.
Claims (9)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19873710882 DE3710882A1 (en) | 1987-04-01 | 1987-04-01 | Method of manufacturing foils, sheets or the like formed from pulverulent materials by means of explosive methods |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19873710882 DE3710882A1 (en) | 1987-04-01 | 1987-04-01 | Method of manufacturing foils, sheets or the like formed from pulverulent materials by means of explosive methods |
Publications (1)
Publication Number | Publication Date |
---|---|
DE3710882A1 true DE3710882A1 (en) | 1988-10-20 |
Family
ID=6324578
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19873710882 Ceased DE3710882A1 (en) | 1987-04-01 | 1987-04-01 | Method of manufacturing foils, sheets or the like formed from pulverulent materials by means of explosive methods |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE3710882A1 (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2307383C2 (en) * | 1973-02-15 | 1977-02-24 | Fraunhofer Ges Forschung | PROCEDURE FOR DETERMINING THE OPTIMAL Blasting Conditions DURING EXPLOSIVE COMPRESSION OF VARIOUS METALLIC AND CERAMIC POWDERS |
-
1987
- 1987-04-01 DE DE19873710882 patent/DE3710882A1/en not_active Ceased
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2307383C2 (en) * | 1973-02-15 | 1977-02-24 | Fraunhofer Ges Forschung | PROCEDURE FOR DETERMINING THE OPTIMAL Blasting Conditions DURING EXPLOSIVE COMPRESSION OF VARIOUS METALLIC AND CERAMIC POWDERS |
Non-Patent Citations (2)
Title |
---|
PRÜMMER, R.: Explosivverdichtung pulveriger Substanzen, S. 36, 37, 62, 63, 84 * |
US-Z: Journal of Metals, Okt. 1981, S. 21-26 * |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OP8 | Request for examination as to paragraph 44 patent law | ||
8181 | Inventor (new situation) |
Free format text: ANTRAG AUF NICHTNENNUNG |
|
8131 | Rejection |