EP0513685A1 - Procédé pour imprégner des matériaux poreux, fibreux ou pulvérulents avec un métal en fusion ou un alliage - Google Patents
Procédé pour imprégner des matériaux poreux, fibreux ou pulvérulents avec un métal en fusion ou un alliage Download PDFInfo
- Publication number
- EP0513685A1 EP0513685A1 EP92107799A EP92107799A EP0513685A1 EP 0513685 A1 EP0513685 A1 EP 0513685A1 EP 92107799 A EP92107799 A EP 92107799A EP 92107799 A EP92107799 A EP 92107799A EP 0513685 A1 EP0513685 A1 EP 0513685A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- metal
- pressure
- alloy
- melt
- infiltration
- 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.)
- Granted
Links
Images
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
- 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
- B22F3/24—After-treatment of workpieces or articles
- B22F3/26—Impregnating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D19/00—Casting in, on, or around objects which form part of the product
- B22D19/14—Casting in, on, or around objects which form part of the product the objects being filamentary or particulate in form
Definitions
- the invention relates to a method for introducing or infiltrating molten metal or molten metal alloys (in the following, the term metal, even if alloy is not expressly mentioned, should also include metal alloys) from a feed area into a receiving volume (infiltration space), the in the metal to be embedded and / or to be filled with metal, for example Receiving volume containing porous materials is evacuated and the metal is pressed into the receiving volume under pressure.
- molten metal or molten metal alloys in the following, the term metal, even if alloy is not expressly mentioned, should also include metal alloys
- Such methods are used in particular for the production of metal objects reinforced with fibers, particles or the like, or of preforms which have porous cavities impregnated with metal, such as are e.g. can be used for highly stressed components.
- the melting parameters (change in volume, thermal expansion of the containers, metals, etc.) are known or can be readily calculated and selected accordingly, the method according to the invention does not cause any great difficulties.
- a pressure body can also be provided, which e.g. from a higher melting metal or from another material, e.g. Ceramic, can exist; it is essential that between the molten metal and the residual metal or the pressure body a metal layer can melt and solidify again, which lies tightly against the metal to be melted or on the pressure body and the container wall or connects to it or this or adheres to it and, due to the seal, allows pressure to build up when the remaining metal to be melted is melted.
- the pressure built up pushes the molten metal into the infiltration room.
- the formation of a sealing zone formed by solidified, molten metal is supported by a temperature gradient between the molten metal and the non-molten metal or the pressure body, e.g. a temperature gradient is created by appropriate heating and cooling of the container.
- Suitable metals and alloys to be melted are, for example, aluminum, magnesium or Cu and their alloys which are infiltrated into porous substances or infiltrated into a receiving volume which is made of metallic, with reinforcing elements, for example fibers, particles, whiskers or the like.
- mineral, ceramic, graphitic or other materials are filled as densely as possible or in a predetermined density. It is particularly advantageous if the length of the fibers introduced extends through the entire infiltration space.
- a device for carrying out the method is characterized in that the part of the pressure chamber close to the pressure vessel and the pressure vessel, preferably over the entire length of the infiltration path, can be heated with a heating device, preferably an induction heater.
- the infiltration takes place in porous materials or preforms of metallic, ceramic, graphitic or mineral nature or in cavities which are filled with particles, whiskers, short and / or long fibers, with or without a binder, with a metallic melt and with the pressure which arises from the increase in volume when one or more initially solid metal bodies (s) melt in the closed container.
- the internal volume of the container or the pressure chamber closed by it, the volume of the metal body (s) and the volume of the infiltrate space in the preform, the thermal expansion coefficients of the container and the pressure vessel, the metal (alloy) of the fibers are coordinated with one another, that the evacuated infiltration space (preform) is infiltrated completely with metallic melt either preferably already during the melting process or in the course of a further increase in temperature of the molten metal.
- the temperature of the melt in the infiltration room is e.g. by appropriate heating of the pressure vessel or the infiltration space itself or the melting range so that the entire or at least the main part of the infiltration pressure is created by the liquefaction of the melt. By regulating the temperature to values just above the melting point, a reaction between the melt and the filling or reinforcing materials can be minimized.
- the restriction of the melt area to a partial area of the pressure space is carried out by sealing the partial volume with the expanding melt with the aid of at least one pressure body which consists of foreign metal, another material and / or the metal to be melted can, on which the solidifying melt can attach again and seal the melt area.
- the area in which the sealing takes place is at a temperature level below the melting temperature; this temperature is set by heat dissipation, for example radiation or external cooling.
- FIG. 1 shows a schematic section through a device according to the invention and FIG. 2 shows a detailed section.
- FIG. 1 shows a schematic section through a device according to the invention for pressure infiltration of molten metal into a pressure vessel 2 with an infiltration space 8 filled with filler material 7.
- the pressure vessel is optionally integrally connected to a pressure-resistant container 1.
- the pressure chamber 6 of the container 1 is divided into two sub-volumes, namely a lower sub-volume in which the metal (alloy metal) is melted and in an upward sub-volume in which the metal 9 to be melted is kept in solid form in order to To act pressure or sealing body; alternatively or additionally, a pressure or sealing body 9 made of a different material can be provided in the application area.
- a possibly common heating device 11 is assigned to the pressure vessel 2 and the container 1; the upper region of the container 1 is surrounded by a cooling device 12 in order to create a temperature gradient in the container 1.
- the setting of the temperature gradient can also be achieved by thermal radiation, in that the heating device 11 surrounds the container 1 only over a certain partial area.
- the metal 10 melted in the melting volume by the heating device 11 solidifies on the colder pressure part 9 or on the colder wall surrounding it and penetrates into the gap between the pressure part 9 and the wall of the pressure vessel 1 in a certain way until it solidifies .
- This solidifying metal (14) prevents further penetration of the molten metal 10, as a result of which a pressure space is created which is only open towards the pressure vessel 2 or against the infiltration space 8 to be filled.
- the metal body 9 inserted into the pressure chamber 6 or the metal body 13 inserted into the infiltration chamber 8 due to its thermal expansion, bring about a seal between itself and the respective walls of the container 1 or pressure vessel 6 , which largely prevents the penetration of molten metal.
- This measure can be carried out in addition or as an alternative to sealing with the aid of a temperature gradient to form a sealing layer 14 made of solidifying metal.
- the cross sections of the pressure chamber 6 or of the infiltration chamber 8 can be any, since the shape of the sealing body 9 or 13 can also be selected as desired or can be adapted to the clear width of the rooms.
- the method is particularly advantageously suitable for the infiltration of aluminum, magnesium or other metals or their alloys, since these metals expand considerably during melting; e.g.
- melting aluminum increases its volume by 6%, and it is for the introduction of aluminum and / or magnesium or their alloys into preforms or infiltration volumes 8, or the like with particles and / or fibers made of silicon carbide, aluminum oxide, carbon, boron nitride. are filled, only short infiltration times are necessary, which largely preclude a reaction of the fibers (formation of metal carbides, nitrides, etc.) with the introduced metals.
- the device Before melting or after filling the infiltration space 8 with the fibers 7 or the pressure space 6 with the metal to be melted, the device is evacuated, which evacuation can be continued until the seal 14 is formed between the melted metal and the pressure body 9.
- the pressure bodies 9 or 13 are adapted as precisely as possible to the inside width of the container or pressure vessels 2. This is particularly easy if the pressure body consists of solid metal to be melted, since the extent of the empty spaces to be taken into account when calculating and regulating the infiltration pressure is then minimized.
- temperature and / or pressure measuring devices 16, 17 are expediently provided, with which the heating device (s) 11 and / or cooling device 12 are controlled if necessary.
- a possible reaction between the infiltrated metal and the filling material 7 can be minimized if the container 2 is cooled immediately after the infiltration metal has penetrated, e.g. quenched by immersion in water or hot oil.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Manufacture Of Alloys Or Alloy Compounds (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4115057 | 1991-05-08 | ||
DE19914115057 DE4115057A1 (de) | 1991-05-08 | 1991-05-08 | Verfahren und einrichtung zum infiltrieren von geschmolzenem metall |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0513685A1 true EP0513685A1 (fr) | 1992-11-19 |
EP0513685B1 EP0513685B1 (fr) | 1995-08-02 |
Family
ID=6431263
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19920107799 Expired - Lifetime EP0513685B1 (fr) | 1991-05-08 | 1992-05-08 | Procédé pour imprégner des matériaux poreux, fibreux ou pulvérulents avec un métal en fusion ou un alliage |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0513685B1 (fr) |
DE (1) | DE4115057A1 (fr) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT406837B (de) * | 1994-02-10 | 2000-09-25 | Electrovac | Verfahren und vorrichtung zur herstellung von metall-matrix-verbundwerkstoffen |
DE19624643C2 (de) * | 1995-06-21 | 2001-12-06 | Electrovac | Verfahren zur Herstellung von MMC-Bauteilen |
EP1260293A1 (fr) * | 2001-05-25 | 2002-11-27 | Alcatel | Procédé de fabrication d'une structure tube-plaque en matériau composite à matrice métallique |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4225530A1 (de) * | 1992-08-01 | 1994-02-03 | Bayerische Motoren Werke Ag | Verfahren und Vorrichtung zum Herstellen von Bauteilen |
AT406238B (de) * | 1995-07-07 | 2000-03-27 | Electrovac | Formkörper aus mmc mit modulartigem aufbau |
DE19605398A1 (de) * | 1996-02-14 | 1997-08-21 | Wielage Bernhard Prof Dr Ing | Herstellen von Verbundwerkstoffen durch Bandgießen bzw. Gießwalzen |
US5934357A (en) * | 1996-11-13 | 1999-08-10 | Aluminum Company Of America | System for manufacturing metal matrix composites |
JPH10152734A (ja) * | 1996-11-21 | 1998-06-09 | Aisin Seiki Co Ltd | 耐摩耗性金属複合体 |
DE19710671C2 (de) | 1997-03-14 | 1999-08-05 | Daimler Chrysler Ag | Verfahren zum Herstellen eines Bauteils sowie Verwendung eines derart hergestellten Bauteils |
DE19712624C2 (de) * | 1997-03-26 | 1999-11-04 | Vaw Motor Gmbh | Aluminiummatrix-Verbundwerkstoff und Verfahren zu seiner Herstellung |
DE19851258A1 (de) * | 1998-11-06 | 2000-05-18 | Fuerstlich Hohenzollernsche We | Verfahren und Vorrichtung zum Ausfüllen von Hohlräumen bzw. Nuten eines Körpers mit einem flüssigen Metall |
DE10333038B4 (de) * | 2003-07-21 | 2006-01-05 | Daimlerchrysler Ag | Verfahren zur Druckinfiltration poröser Bauteile |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2415868A1 (de) * | 1973-04-03 | 1975-01-30 | Toyota Motor Co Ltd | Verfahren zur herstellung eines mit metall impraegnierten koerpers |
US4508158A (en) * | 1983-02-22 | 1985-04-02 | International Harvester Company | Graphite-metal matrix bearings and methods of manufacturing |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3504118C1 (de) * | 1985-02-07 | 1985-10-31 | Daimler-Benz Ag, 7000 Stuttgart | Verfahren zur Herstellung faserverstaerkter Leichtmetall-Gussstuecke |
-
1991
- 1991-05-08 DE DE19914115057 patent/DE4115057A1/de active Granted
-
1992
- 1992-05-08 EP EP19920107799 patent/EP0513685B1/fr not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2415868A1 (de) * | 1973-04-03 | 1975-01-30 | Toyota Motor Co Ltd | Verfahren zur herstellung eines mit metall impraegnierten koerpers |
US4508158A (en) * | 1983-02-22 | 1985-04-02 | International Harvester Company | Graphite-metal matrix bearings and methods of manufacturing |
Non-Patent Citations (2)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 14, no. 69 (M-932)(4012) 8. Februar 1990 & JP-A-1 289 561 ( TOYOTA MOTOR CORP ) 21. November 1989 * |
PATENT ABSTRACTS OF JAPAN vol. 9, no. 132 (M-385)(1855) 7. Juli 1985 & JP-A-60 015 061 ( TORAY K.K. ) 25. Januar 1985 * |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT406837B (de) * | 1994-02-10 | 2000-09-25 | Electrovac | Verfahren und vorrichtung zur herstellung von metall-matrix-verbundwerkstoffen |
DE19624643C2 (de) * | 1995-06-21 | 2001-12-06 | Electrovac | Verfahren zur Herstellung von MMC-Bauteilen |
EP1260293A1 (fr) * | 2001-05-25 | 2002-11-27 | Alcatel | Procédé de fabrication d'une structure tube-plaque en matériau composite à matrice métallique |
FR2825041A1 (fr) * | 2001-05-25 | 2002-11-29 | Cit Alcatel | Procede de fabrication d'une structure tube-plaque en materiau composite a matrice metallique |
US6595264B2 (en) | 2001-05-25 | 2003-07-22 | Alcatel | Method of manufacturing a tube-and-plate structure of metal-matrix composite material |
Also Published As
Publication number | Publication date |
---|---|
DE4115057A1 (de) | 1992-11-12 |
DE4115057C2 (fr) | 1993-03-11 |
EP0513685B1 (fr) | 1995-08-02 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0513685B1 (fr) | Procédé pour imprégner des matériaux poreux, fibreux ou pulvérulents avec un métal en fusion ou un alliage | |
DE1901766A1 (de) | Verfahren zum Herstellen eines verdichteten Gegenstandes aus Pulver,insbesondere aus Metallpulver | |
DE3033225A1 (de) | Verfahren zum heisspressen von pulver in einem behaelter | |
DE2027016A1 (de) | Verfahren zum Verdichten von Metall oder Keramikgegenstanden | |
DE4034418A1 (de) | Verfahren und vorrichtung zum giessen von metall gegen die schwerkraft | |
DE3836392C2 (de) | Verfahren und Vorrichtung zur Herstellung rohrförmiger keramischer Körper | |
DE2015362B2 (de) | Verfahren zur herstellung von dispersionsverfestigten legierungen | |
EP0567008A2 (fr) | Procédé et appareillage pour la croissance de plusieurs monocristaux | |
DE3546148A1 (de) | Vorrichtung zur herstellung von verbundwerkstoff | |
DE2952150C2 (de) | Verfahren und Vorrichtung zur Herstellung von Barren aus gerichtet erstarrten Legierungen | |
WO2000048770A1 (fr) | Procede et dispositif pour produire des pieces coulees en alliages d'aluminium et de magnesium | |
DE2951202A1 (de) | Verfahren zum von unten her erfolgenden bzw. bodenseitigen einblasen von gas in eine stahlschmelze | |
DE10025014C2 (de) | Vorrichtung zur Herstellung von Leichtmetallgußerzeugnissen, insbesondere von Teilen aus Magnesium bzw. Magnesiumlegierungen | |
DE2856466C2 (de) | Verfahren zur Verfestigung hochradioaktive Abfallstoffe enthaltender, als Granalien oder als Pulver vorliegender Glasteilchen in einer Metallmatrix | |
AT376920B (de) | Verfahren zum herstellen eines gegenstandes aus einem sinterfaehigen material | |
CH626550A5 (en) | Process for producing a sintered body by hot-pressing powder of a metallic or non-metallic composition | |
DE3324291A1 (de) | Verfahren zum befuellen von metallbehaeltern mit einer radioaktiven glasschmelze und vorrichtung zur aufnahme einer radioaktiven glasschmelze | |
DD301654A5 (de) | Freilaufsicherung fuer metallurgische gefaesse mit bodenverschluss | |
DE1483703B2 (de) | Verfahren zum heisspressen von pulvern aus metallen, metallegierungen oder anorganischen metallverbindungen | |
DE3307000C2 (de) | Verfahren zur Herstellung eines Verbundmetallkörpers | |
DE4303434C1 (de) | Verfahren zum Herstellen von Metall-Matrix-Verbundwerkstoffen | |
DE2210771A1 (de) | Verfahren zur Herstellung eines Mischwerkstoflfes | |
AT405915B (de) | Verfahren zum herstellen von metall-matrix-verbundwerkstoffen und vorformhalter für dessen durchführung | |
DE102007038201B3 (de) | Verfahren zur Herstellung eines Verbundwerkstoffes | |
DE3330137A1 (de) | Verschleissgeschuetztes werkstueck |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 19920605 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): FR GB IT |
|
17Q | First examination report despatched |
Effective date: 19930517 |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: SCHMITT, THEODOR, DIPL.-ING. |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): FR GB IT |
|
ITF | It: translation for a ep patent filed |
Owner name: ORGANIZZAZIONE D'AGOSTINI |
|
GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 19951014 |
|
ET | Fr: translation filed | ||
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed | ||
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20000503 Year of fee payment: 9 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20010427 Year of fee payment: 10 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20010508 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20010508 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20030131 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED. Effective date: 20050508 |