EP1196259B1 - Component comprised of a composite material containing a formable metallic material and method for producing the same - Google Patents
Component comprised of a composite material containing a formable metallic material and method for producing the same Download PDFInfo
- Publication number
- EP1196259B1 EP1196259B1 EP00938562A EP00938562A EP1196259B1 EP 1196259 B1 EP1196259 B1 EP 1196259B1 EP 00938562 A EP00938562 A EP 00938562A EP 00938562 A EP00938562 A EP 00938562A EP 1196259 B1 EP1196259 B1 EP 1196259B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- metallic material
- layer
- layers
- foamable
- expandable
- 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 - Lifetime
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
- 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
- B22F7/002—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 porous nature
- B22F7/004—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 porous nature comprising at least one non-porous part
- B22F7/006—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 porous nature comprising at least one non-porous part the porous part being obtained by foaming
-
- 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
- B22F3/10—Sintering only
- B22F2003/1042—Sintering only with support for articles to be sintered
- B22F2003/1046—Sintering only with support for articles to be sintered with separating means for articles to be sintered
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S428/00—Stock material or miscellaneous articles
- Y10S428/922—Static electricity metal bleed-off metallic stock
- Y10S428/9335—Product by special process
- Y10S428/94—Pressure bonding, e.g. explosive
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
- Y10T156/11—Methods of delaminating, per se; i.e., separating at bonding face
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49616—Structural member making
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49616—Structural member making
- Y10T29/49622—Vehicular structural member making
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49789—Obtaining plural product pieces from unitary workpiece
Definitions
- the invention relates to a component made of composite material and a method for its Production according to the preambles of claims 1 and 2.
- Light components such as B. hollow body, with two made of a solid metallic material existing cover layers and an intermediate layer of one Metal foam is known. These components have particularly high rigidity and strength at a low weight. From DE 41 01 630 it is known that hollow bodies with Foamable aluminum can be filled and that the foaming process inside of the hollow body takes place, which creates a particularly light component. Through the Presence of oxide layers on all surfaces of the hollow body and on the The surface of the expanding foam can be the connection between the Foam filling and the hollow body are affected.
- Sandwich-like composite materials can also be glued on Aluminum foam bodies with cover layers made of solid metallic material getting produced.
- cover layers made of solid metallic material getting produced.
- Composite materials are known from DE 44 26 627, by the roll cladding of foamable aluminum with cover layers made of solid metallic material such as B. steel, aluminum or titanium, and a subsequent one Foaming of the foamable aluminum.
- cover layers made of solid metallic material such as B. steel, aluminum or titanium
- Foaming of the foamable aluminum In this process
- Manufactured hollow bodies have a solid outer layer on the inside and outside metallic material.
- the inner cover layer contributes little to the rigidity and Strength of the component, but increases the weight of the entire component.
- the object of the present invention is to specify a component that has a high rigidity and has strength but is light in weight. Another job he The invention is to provide a method for producing such a component.
- a component which has a layer of solid has metallic material and in which at least one surface by a foamable metallic material is formed.
- This surface can be the outer or be the inner surface.
- the component can be a flat composite sheet or a Be hollow body. Due to the manufacturing process of this component ensures that the connection between the solid metallic top layer and the foamable layer is very good and that the foamable layer on the Top layer adheres firmly.
- the component When designing the component as a flat composite sheet, it can be provided that this made of a solid metallic layer and a layer of one firmly adhering to it foamable metallic material.
- These composite sheets are suitable especially as side impact protection beams for car doors.
- Such one Side impact protection beam therefore consists of a hollow profile on the There is a firmly adhering metal foam on the inside wall, which clearly increases the rigidity and strength of the component, but only contributes little to the weight.
- Another embodiment of the composite sheets provides that the component consists of several Layers of a solid material and the layers arranged between them foamable metallic material, both or only one surface of a composite sheet designed in this way by a layer of a foamable metallic.
- the invention provides that a Composite sheet one arranged between two foamable layers Has layer of solid metallic meterial. This composite sheet has a particularly high rigidity and strength with a very low Weight on.
- the components according to the invention with an asymmetrical layer sequence are preferably produced by package rolling. Doing this alternately Layers made of a solid metallic material and layers made of foamable metallic material arranged on top of each other. According to the invention it is also provided instead of the finished foamable Layers of loose powder mixtures containing blowing agent or pre-compressed (e.g. by cold isostatic pressing) to use powder mixtures. In In these cases, one or more contiguous, continuous, non-porous, separating foils used, otherwise emulsions could mix with the loose or pre-compacted powder mixture. The In these cases, loose or pre-compacted powder mixtures are only to foamable during the plating or coating process Layers compacted.
- a link between the individual Foamable layers belonging to composite sheets during the Rolling process is by the arrangement of a release agent, for. Legs Emulsion of graphite or boron nitride or a release film, between the Prevents layers. Is the foamable layer in the form of a powder mixture containing blowing agent, a film is used as the release agent used.
- the packages assembled in this way are subjected to the rolling process fed. After the rolling process is completed, the separating agents arranged between the foamable layers Components that have foamable layers on their surfaces, receive.
- plating or coating methods can also be used be used, provided they establish a good connection between the foamable metal layer and the top layer made of solid metallic Lead material. It can be pulling, thermal spraying, Explosive plating, coextrusion, extrusion plating or HIP plating act.
- connection quality of the method according to the invention composite materials is so good that e.g. the levels Composite metal sheets cold-profiled or by known methods longitudinally welded hollow profiles can be processed.
- irregularly shaped hollow parts e.g. Tanks or wishbones, to get it is possible to advance the flat composite sheets by any Forming processes such as pressing, deep drawing or internal pressure forming deform and then form the desired hollow body from it.
- Figure 1 shows an arrangement of the materials in the production of planes Composite sheets with only one solid metallic cover layer 1a, 1b, and a foamable layer 2a, 2b.
- the starting materials for symmetrical plate stacks A are obtained arranged.
- a cover layer 1a made of solid metallic material is a layer 2a made of a metallic, foamable material brought.
- a release agent 3 is arranged on this layer.
- the Release agent layer 3 becomes a further layer 2b of foamable metallic material and a further cover layer 1b from a solid metallic material applied.
- Such plate stack A are one Subjected to roll plating.
- the cover layer connects in each case 1a, b with the adjacent foamable layer 2a, b.
- Such a The composite sheet produced can also be structured in three dimensions.
- the Connection quality between the two layers 1 and 2 is so good that this is the case in subsequent processing by conventional methods such as. Pressing, deep drawing, hydroforming etc. do not differ from each other to solve.
- FIG. 2 shows another arrangement for the production of composite sheets in the Package rolling process shown. It is the following arrangement of the layers provided: follows a cover layer 4 made of solid metallic material a layer 5 of foamable material. This layer 5 is followed by one Release agent layer 3, on which another layer 6 of foamable Material is arranged. This layer 6 is followed by a layer 7 made of solid metallic material and a layer 8 of foamable material and a release agent layer 3. This is followed by a layer foamable material and a cover layer 10 made of solid metallic material.
- This package is fed to the roll plating process. After the roll cladding process has been completed, two are formed on one side foamable material coated composite sheets 4, 5; 9, 10 and one composite sheet 6, 7, 8 provided with foamable material on both sides.
- FIG. 3 shows a layer sequence in which one Sandwich construction (arranged between two cover layers foamable layer) additionally with a foamable layer on one or both surfaces is coated.
- Layers solid metallic material 11, foamable material 12 , Release agent 3, foamable material 13, solid metallic material 14, foamable material 15, solid metallic material 16, foamable Material 17, release agent 3, foamable material 18, solid metallic Material 19. If this package is roll-clad, two are created on one side a foamable layer provided composite sheets 11, 12; and 18, 19 and a Sanchwich construction with two solid cover layers 14, 16, the are provided on their surfaces with foamable material 13, 17 and with foamable material 15 between the cover layers 14, 16 located.
- the layers 11, 12, 3a and 13 omitted, so there is a one-sided with a foamable layer 17 provided sandwich construction 14, 15, 16 and one sided with a foamable layer 18 provided composite sheet 18, 19th
- the contact surfaces of the two Half-shells 20, 21 are not foamed as a result of the contact pressure, see above that the two half-shells 20, 21 here by a solid, non-foamed Aluminum layer are inextricably linked while on the rest Inner surfaces of the foam could expand unhindered.
- Another One possibility for producing the hollow component is the two Half shells 20, 21 with each other before or after foaming weld so that the metal layers of conventional materials in the welding zone are directly connected to each other without foam or foamable material in between.
- regularly shaped hollow bodies e.g. simple pipes
- the foaming process is often carried out as the last step by the hollow body is heated to a temperature at which the foamable aluminum layer 24 foams to a foam layer 25.
- the foaming can be deliberately driven to the extent that the entire interior of a hollow component is filled with foam.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Composite Materials (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Laminated Bodies (AREA)
- Metal Rolling (AREA)
- Forging (AREA)
- Powder Metallurgy (AREA)
Abstract
Description
Die Erfindung betrifft ein Bauteil aus Verbundwerkstoff und ein Verfahren zu seiner
Herstellung gemäß den Oberbegriffen der Patentansprüche 1 und 2.The invention relates to a component made of composite material and a method for its
Production according to the preambles of
Leichte Bauteile, wie z. B. Hohlkörper, mit zwei aus einem massiven metallischen Material bestehenden Deckschichten und einer dazwischen befindlichen Schicht aus einem Metallschaum sind bekannt. Diese Bauteile weisen besonders hohe Steifigkeit und Festigkeit bei einem niedrigen Gewicht auf. Aus der DE 41 01 630 ist bekannt, dass Hohlkörper mit aufschäumbarem Aluminium gefüllt werden und dass der Aufschäumvorgang im Inneren des Hohlkörpers stattfindet, wodurch ein besonders leichtes Bauteil entsteht. Durch die Anwesenheit von Oxydschichten auf allen Oberflächen des Hohlkörpers und auf der Oberfläche des expandierenden Schaumes kann die Verbindung zwischen der Schaumfüllung und dem Hohlkörper beeinträchtigt werden.Light components, such as B. hollow body, with two made of a solid metallic material existing cover layers and an intermediate layer of one Metal foam is known. These components have particularly high rigidity and strength at a low weight. From DE 41 01 630 it is known that hollow bodies with Foamable aluminum can be filled and that the foaming process inside of the hollow body takes place, which creates a particularly light component. Through the Presence of oxide layers on all surfaces of the hollow body and on the The surface of the expanding foam can be the connection between the Foam filling and the hollow body are affected.
Sandwichartige Verbundwerkstoffe können auch durch Bekleben von Aluminiumschaumkörpern mit Deckschichten aus massivem metallischen Material hergestellt werden. Hier ist die mangelnde Festigkeit der Klebstoffe, insbesondere bei höheren Temperaturen, nachteilig. Aus der DE 44 26 627 sind Verbundwerkstoffe bekannt, die durch Walzplattieren von aufschäumbarem Aluminium mit Deckschichten aus massivem metallischen Material, wie z. B. Stahl, Aluminium oder Titan, und einem nachfolgenden Aufschäumen des aufschäumbaren Aluminiums, hergestellt werden. In diesem Verfahren hergestellte Hohlkörper weisen außen und innen eine Deckschicht aus massivem metallischen Material auf. Die innere Deckschicht trägt hierbei wenig zur Steifigkeit und Festigkeit des Bauteils bei, erhöht jedoch das Gewicht des gesamten Bauteiles. Sandwich-like composite materials can also be glued on Aluminum foam bodies with cover layers made of solid metallic material getting produced. Here is the lack of strength of the adhesives, especially at higher temperatures, disadvantageous. Composite materials are known from DE 44 26 627, by the roll cladding of foamable aluminum with cover layers made of solid metallic material such as B. steel, aluminum or titanium, and a subsequent one Foaming of the foamable aluminum. In this process Manufactured hollow bodies have a solid outer layer on the inside and outside metallic material. The inner cover layer contributes little to the rigidity and Strength of the component, but increases the weight of the entire component.
Aufgabe der vorliegenden Erfindung ist es, ein Bauteil anzugeben, das eine hohe Steifigkeit und Festigkeit aufweist, dessen Gewicht jedoch gering ist. Eine weitere Aufgabe er Erfindung ist es, ein Verfahren zur Herstellung eines solchen Bauteiles anzugeben.The object of the present invention is to specify a component that has a high rigidity and has strength but is light in weight. Another job he The invention is to provide a method for producing such a component.
Diese Aufgabe wird durch die in den Patentansprüchen 1 und 2 angegebenen Merkmale
gelöst. Unteransprüche stellen vorteilhafte Weiterbildungen dar.This object is achieved by the features specified in
Gemäß der Erfindung wird ein Bauteil angegeben, das eine Schicht aus massivem metallischen Material aufweist und bei dem mindestens eine Oberfläche durch einen aufschäumbaren metallischen Werkstoff gebildet ist. Diese Oberfläche kann die äußere oder die innere Oberfläche sein. Das Bauteil kann als ein ebenes Verbundblech oder ein Hohlkörper ausgebildet sein. Durch das Herstellungsverfahren dieses Bauteils ist gewährleistet, dass die Verbindung zwischen der massiven metallischen Deckschicht und der aufschäumbaren Schicht sehr gut ist und dass die aufschäumbare Schicht an der Deckschicht fest haftet.According to the invention, a component is specified which has a layer of solid has metallic material and in which at least one surface by a foamable metallic material is formed. This surface can be the outer or be the inner surface. The component can be a flat composite sheet or a Be hollow body. Due to the manufacturing process of this component ensures that the connection between the solid metallic top layer and the foamable layer is very good and that the foamable layer on the Top layer adheres firmly.
Bei Ausgestaltung des Bauteils als ebenes Verbundblech kann vorgesehen sein, dass dieses aus einer massiv-metallischen Schicht und einer fest daran haftenden Schicht aus einem aufschäumbaren metallischen Werkstoff besteht. Diese Verbundbleche eignen sich insbesondere als Seitenaufprallschutzträger für PKW-Türen. Ein derartiger Seitenaufprallschutzträger besteht demnach aus einem Hohlprofil, an dessen Innenwandung sich ein fest anhaftender Metallschaum befindet, der deutlich zur Steifigkeit und Festigkeit des Bauteils, aber nur wenig zum Gewicht beiträgt.When designing the component as a flat composite sheet, it can be provided that this made of a solid metallic layer and a layer of one firmly adhering to it foamable metallic material. These composite sheets are suitable especially as side impact protection beams for car doors. Such one Side impact protection beam therefore consists of a hollow profile on the There is a firmly adhering metal foam on the inside wall, which clearly increases the rigidity and strength of the component, but only contributes little to the weight.
Eine andere Ausgestaltung der Verbundbleche sieht vor, dass das Bauteil aus mehreren Schichten eines massiven Werkstoffes und der dazwischen angeordneten Schichten eines aufschäumbaren metallischen Werkstoffes besteht, wobei beide oder nur eine Oberfläche eines derart ausgestalteten Verbundbleches durch eine Schicht aus einem aufschäumbaren metallischen. Another embodiment of the composite sheets provides that the component consists of several Layers of a solid material and the layers arranged between them foamable metallic material, both or only one surface of a composite sheet designed in this way by a layer of a foamable metallic.
Werkstoff gebildet wird. In Ausgestaltung sieht die Erfindung vor, dass ein Verbundblech eine zwischen zwei aufschäumbaren Schichten angeordnete Schicht aus massivem metallischen Meterial aufweist. Dieses Verbundblech weist eine besonders hohe Steifigkeit und Festigkeit bei einem sehr geringen Gewicht auf.Material is formed. In an embodiment, the invention provides that a Composite sheet one arranged between two foamable layers Has layer of solid metallic meterial. This composite sheet has a particularly high rigidity and strength with a very low Weight on.
Die erfindungsgemäßen Bauteile mit unsymmetrischer Schichtfolge werden vorzugsweise durch Paketwalzen hergestellt. Dabei werden abwechselnd Schichten aus einem massiven metallischen Werkstoff und Schichten aus aufschäumbarem metallischen Werkstoff aufeinander angeordnet. Erfindungsgemäß wird auch vorgesehen, anstelle der fertigen aufschäumbaren Schichten lose, treibmittelhaltige Pulvermischungen oder aber vorverdichtete (z.B. durch kaltisostatisches Pressen) Pulvermischungen zu verwenden. In diesen Fällen werden als Trennmittel eine oder mehrere zusammenhängende, durchgehende, nichtporöse, Trennfolien verwendet, da Emulsionen sich sonst mit der losen oder vorverdichteten Pulvermischung vermischen könnten. Die losen oder vorverdichteten Pulvermischungen werden in diesen Fällen erst während des Plattier- oder Beschichtungsvorgangs zu aufschäumbaren Schichten verdichtet. Eine Verbindung zwischen den zu den einzelnen Verbundblechen gehörenden aufschäumbaren Schichten während des Walzprozesses wird durch die Anordnung eines Trennmittels, z. B. eine Emulsion aus Graphit oder Bornitrit oder eine Trennfolie, zwischen den Schichten verhindert. Liegt die aufschäumbare Schicht in Form einer treibmittelhaltigen Pulvermischung vor, so wird als Trennmittel eine Folie eingesetzt. Die so zusammengesetzten Pakete werden dem Walzvorgang zugeführt. Nach der Beendigung des Walzvorgangs werden die durch das zwischen den aufschäumbaren Schichten angeordnete Trennmittel getrennten Bauteile, die an ihren Oberflächen aufschäumbare Schichten aufweisen, erhalten.The components according to the invention with an asymmetrical layer sequence are preferably produced by package rolling. Doing this alternately Layers made of a solid metallic material and layers made of foamable metallic material arranged on top of each other. According to the invention it is also provided instead of the finished foamable Layers of loose powder mixtures containing blowing agent or pre-compressed (e.g. by cold isostatic pressing) to use powder mixtures. In In these cases, one or more contiguous, continuous, non-porous, separating foils used, otherwise emulsions could mix with the loose or pre-compacted powder mixture. The In these cases, loose or pre-compacted powder mixtures are only to foamable during the plating or coating process Layers compacted. A link between the individual Foamable layers belonging to composite sheets during the Rolling process is by the arrangement of a release agent, for. Legs Emulsion of graphite or boron nitride or a release film, between the Prevents layers. Is the foamable layer in the form of a powder mixture containing blowing agent, a film is used as the release agent used. The packages assembled in this way are subjected to the rolling process fed. After the rolling process is completed, the separating agents arranged between the foamable layers Components that have foamable layers on their surfaces, receive.
Auch andere bekannte Plattier- oder Beschichtungsverfahren können eingesetzt werden, sofern sie zu einer guten Verbindung zwischen der aufschäumbaren Metallschicht und der Deckschicht aus massivem metallischen Material führen. Dabei kann es sich um Ziehen, thermisches Spritzen, Sprengplattieren, Koextrusion, Strangpressplattieren oder HIP-Plattieren handeln.Other known plating or coating methods can also be used be used, provided they establish a good connection between the foamable metal layer and the top layer made of solid metallic Lead material. It can be pulling, thermal spraying, Explosive plating, coextrusion, extrusion plating or HIP plating act.
Die Verbindungsqualität der nach dem erfindungsgemäßen Verfahren hergestellten Verbundwerkstoffe ist so gut, dass z.B. die ebenen Verbundwerkstoffbleche durch bekannte Verfahren kaltprofiliert oder zu längsnahtgeschweißten Hohlprofilen weiterverarbeitet werden können. Um unregelmäßig geformte Hohlteile, wie z.B. Tanks oder Querlenker, zu erhalten, ist es möglich, die ebenen Verbundbleche zuvor durch beliebige Umformverfahren, wie Pressen, Tiefziehen oder Innendruckumformen, zu verformen und anschließend daraus den gewünschten Hohlkörper zu formen.The connection quality of the method according to the invention composite materials is so good that e.g. the levels Composite metal sheets cold-profiled or by known methods longitudinally welded hollow profiles can be processed. Around irregularly shaped hollow parts, e.g. Tanks or wishbones, to get it is possible to advance the flat composite sheets by any Forming processes such as pressing, deep drawing or internal pressure forming deform and then form the desired hollow body from it.
Die Erfindung wird anhand der nachfolgenden Zeichnungen näher erläutert. Es
zeigen:
Figur 1 zeigt eine Anordnung der Werkstoffe bei der Herstellung von ebenen
Verbundblechen mit nur einer massiv- metallischen Deckschicht 1a, 1b, und
einer aufschäumbaren Schicht 2a, 2b. Um derartige Verbundbleche zu
erhalten werden die Ausgangswerkstoffe zu symmetrischen Plattenstapeln A
angeordnet. Auf eine Deckschicht 1a aus massivem metallischen Werkstoff
wird eine Schicht 2a aus einem metallischen, aufschäumbaren Werkstoff
gebracht. Auf dieser Schicht wird ein Trennmittel 3 angeordnet. Auf die
Trennmittelschicht 3wird eine weitere Schicht 2b aus aufschäumbarem
metallischen Werkstoff und eine weitere Deckschicht 1b aus einem massiven
metallischen Werkstoff aufgebracht. Derartige Plattenstapel A werden einem
Walzplattiervorgang unterzogen. Dabei verbindet sich jeweils die Deckschicht
1a, b mit der benachbarten aufschäumbaren Schicht 2a, b. Eine Verbindung
zwischen den aufschäumbaren Schichten 2a, 2b wird jedoch durch das
Trennmittel 3 verhindert. Nach dem Walzplattieren entstehen so zwei ebene
Verbundwerkstoffbleche, die jeweils nur aus einer Deckschicht 1a, b und einer
fest daran haftenden aufschäumbarenbaren Schicht 2a, 2b bestehen. Ein so
hergestelltes Verbundblech kann auch dreidimensional strukturiert sein. Die
Verbindungsqualität zwischen den beiden Schichten 1 und 2 ist so gut, dass
diese sich bei einer nachfolgenden Weiterverarbeitung durch übliche Verfahren
wie z.B. Pressen, Tiefziehen, Innenhochdruckumformen usw. nicht voneinander
lösen.Figure 1 shows an arrangement of the materials in the production of planes
Composite sheets with only one solid metallic cover layer 1a, 1b, and
a
In Figur 2 ist eine andere Anordnung zur Herstellung von Verbundblechen im
Paketwalzverfahren dargestellt. Es ist folgende Anordnung der Schichten
vorgesehen: Auf eine Deckschicht 4 aus massivem metallischen Material folgt
eine Schicht 5 aus aufschäumbarem Material. Auf diese Schicht 5 folgt eine
Trennmittelschicht 3, auf der eine weitere Schicht 6 aus aufschäumbarem
Material angeordnet ist. Auf diese Schicht 6 folgt eine Schicht 7 aus massivem
metallischen Material und dem eine Schicht 8 aus aufschäumbarem Material
und eine Trennmittelschicht 3. Auf diese folgt eine Schicht aus
aufschäumbarem Material und eine Deckschicht 10 aus massivem
metallischen Werkstoff. Dieses Paket wird dem Walzplattiervorgang zugeführt.
Nach Beendigung des Walzplattierverfahrens entstehen: zwei einseitig mit
aufschäumbarem Material beschichtete Verbundbleche 4, 5; 9, 10 und ein
doppelseitig mit aufschäumbarem Material versehenes Verbundblech 6, 7, 8.FIG. 2 shows another arrangement for the production of composite sheets in the
Package rolling process shown. It is the following arrangement of the layers
provided: follows a cover layer 4 made of solid metallic material
a
In Figur 3 ist eine Schichtreihenfolge dargestellt, bei der eine
Sandwichkonstruktion (zwischen zwei Deckschichten angeordnete
aufschäumbare Schicht) zusätzlich mit einer aufschäumbaren Schicht an einer
oder beiden Oberflächen beschichtet ist. Es ergibt sich folgende Anordnung der
Schichten: massiv-metallisches Material 11, aufschäumbares Material 12
,Trennmittel 3, aufschäumbares Material 13, massiv-metallisches Material 14,
aufschäumbares Material 15, massiv-metallisches Material 16, aufschäumbares
Material 17, Trennmittel 3, aufschäumbares Material 18, massiv-metallisches
Material 19. Wird dieses Paket walzplattiert, so entstehen zwei einseitig mit
einer aufschäumbaren Schicht versehene Verbundbleche 11, 12; und 18, 19
und eine Sanchwichkonstruktion mit zwei massiven Deckschichten 14, 16, die
an ihren Oberflächen mit aufschäumbarem Werkstoff 13, 17 versehen sind und
wobei sich zwischen den Deckschichten 14, 16 aufschäumbares Material 15
befindet. Werden bei der Anordnung nach Figur 3 die Schichten 11, 12 , 3a und
13 weggelassen, so entsteht eine einseitig mit einer aufschäumbaren Schicht
17 versehene Sandwichkontruktion 14, 15, 16 und ein einseitig mit einer
aufschäumbaren Schicht 18 versehenes Verbundblech 18, 19.FIG. 3 shows a layer sequence in which one
Sandwich construction (arranged between two cover layers
foamable layer) additionally with a foamable layer on one
or both surfaces is coated. The following arrangement of the results
Layers: solid metallic material 11,
Gemäß der Darstellung in den Figuren 4, und 5 können oben beschriebene
Verbundbleche durch Tiefziehen zu zwei dreidimensional gewölbten
Halbschalen 20, 21 umgeformt werden. Legt man diese Halbschalen 20, 21 so
aufeinander, daß zwischen ihnen ein Hohlraum 23 entsteht, wobei die
aufschäumbaren Schichten 24 einander zugewandt sind, und löst dann das
Aufschäumen durch eine Erwärmung aus, so verbinden sich an den
Berührungsflächen die beiden aufschäumenden Schichten 24 miteinander, so
dass nach erfolgter Abkühlung die beiden Halbschalen 20, 21 durch den
Metallschaum 25 unlösbar miteinander verbunden sind. Eine andere
Möglichkeit besteht darin, die Halbschalen 20, 21 während des
Schäumvorgangs aufeinander zu pressen, etwa durch Schrauben oder
Spannvorrichtungen. In diesen Fällen kann an den Berührflächen der beiden
Halbschalen 20, 21 infolge des Anspressdrucks kein Aufschäumen erfolgen, so
dass die beiden Halbschalen 20, 21 hier durch eine massive, nichtgeschäumte
Aluminiumschicht unlösbar verbunden sind, während an den übrigen
Innenflächen der Schaum ungehindert expandieren konnte. Eine weitere
Möglichkeit zur Herstellung des Hohlbauteils besteht darin, die beiden
Halbschalen 20, 21 vor oder nach dem Aufschäumen miteinander zu
verschweißen, so dass die Metallschichten aus konventionellen Materialien in
der Schweißzone direkt miteinander verbunden sind, ohne dass sich Schaum
oder aufschäumbares Material dazwischen befindet. Schließlich ist es möglich,
regelmäßig geformte Hohlkörper (z.B. einfache Rohre) herzustellen und diese
anschließend, beispielsweise durch Innenhochdruckumformen,
weiterzubearbeiten. As shown in Figures 4, and 5 can be described above
Composite sheets by deep drawing into two three-dimensionally
Häufig erfolgt der Aufschäumvorgang als letzter Schritt, indem der Hohlkörper
auf eine Temperatur erwärmt ist, bei der die aufschäumbare Aluminiumschicht
24 zu einer Schaumschicht 25 aufschäumt. Es ist jedoch auch möglich,
zunächst den Schäumvorgang durchzuführen, und anschließend die
Umformung vorzunehmen.The foaming process is often carried out as the last step by the hollow body
is heated to a temperature at which the
Vorteilhaft ist es, wenn dieser Schäumvorgang mit einer Wärmebehandlung des Deckblechwerkstoffs durchgeführt wird.It is advantageous if this foaming process with a heat treatment of the Cover sheet material is carried out.
In einzelnen Fällen kann das Aufschäumen gezielt soweit getrieben werden, dass der gesamte Innenraum eines Hohlbauteils mit Schaum gefüllt ist.In individual cases, the foaming can be deliberately driven to the extent that the entire interior of a hollow component is filled with foam.
Claims (8)
- Method for producing a component made of composite material with at least one layer made of solid metallic material and with at least one layer made of an expandable metallic material, at least one exterior and/or interior surface of the component comprising the expandable metallic material, characterised in that at least two layers which are made of expandable metallic material and are separated from each other by a separating means are disposed between at least two layers made of solid metallic material, and in that these layers are subjected to a rolling process, and in that after the rolling process the composite material components, which are separated from each other by separating means, are separated.
- Method for producing a component made of composite material with at least one layer made of solid metallic material and with at least one layer made of an expandable metallic material, at least one exterior and/or interior surface of the component comprising the expandable metallic material, characterised in that a layer made of expandable metallic material is disposed between two layers made of solid metallic material, and in that at least two layers which are made of expandable material and are separated from each other by a separating means are disposed between at least one layer made of solid metallic material and at least one further layer made of solid metallic material.
- Method according to claim 1 or 2, characterised in that the layer made of expandable material is formed by a loose or precompressed powder mixture which contains foaming means, and in that during the rolling process this powder mixture is compressed into a solid expandable layer.
- Method according to one of the preceding claims 1 or 2, characterised in that the separating means is an emulsion made of graphite or boron nitrite or is a separating foil.
- Method according to claim 4, characterised in that the separating means is a foil.
- Method according to one of the claims 1 to 5, characterised in that the method is implemented as roll-bonding, a drawing method, explosive plating, HIP plating, extrusion plating, coextrusion or drawing.
- Method according to one of the preceding claims 1 to 6, characterised in that the further processing of the produced components is effected by means of pressing, internal high pressure forming or deep drawing.
- Method according to one of the preceding claims, characterised in that the further processing of the produced components is effected by means of deep drawing.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19923127 | 1999-05-19 | ||
DE19923127 | 1999-05-19 | ||
PCT/DE2000/001559 WO2000071285A1 (en) | 1999-05-19 | 2000-05-18 | Component comprised of a composite material containing a formable metallic material and method for producing the same |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1196259A1 EP1196259A1 (en) | 2002-04-17 |
EP1196259B1 true EP1196259B1 (en) | 2002-12-04 |
Family
ID=7908609
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00938562A Expired - Lifetime EP1196259B1 (en) | 1999-05-19 | 2000-05-18 | Component comprised of a composite material containing a formable metallic material and method for producing the same |
Country Status (7)
Country | Link |
---|---|
US (1) | US6676896B1 (en) |
EP (1) | EP1196259B1 (en) |
AT (1) | ATE228907T1 (en) |
AU (1) | AU5389600A (en) |
CA (1) | CA2374487A1 (en) |
DE (2) | DE50000892D1 (en) |
WO (1) | WO2000071285A1 (en) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10042569C1 (en) * | 2000-08-25 | 2002-04-04 | Christian Steglich | Method and device for producing composite materials with a core made of metal foam |
DE10127716A1 (en) * | 2001-06-07 | 2002-12-12 | Goldschmidt Ag Th | Production of metal/metal foam composite components comprises inserting a flat or molded metal part into the hollow chamber of a casting mold, inserting a mixture of molten metal |
DE10158627B4 (en) * | 2001-11-29 | 2005-08-25 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Carrier structures for absorbing forces and deformation energy |
DE10246454A1 (en) * | 2002-10-04 | 2004-04-15 | Rwth Aachen | Making coated foamed components used in e.g. automobile or building industries, employs surface treatment, coating and profiling by thermal foaming |
DE10260418A1 (en) * | 2002-12-21 | 2004-07-15 | Wilhelm Karmann Gmbh | Components and semi-finished products with a metallic foam layer |
EP1468765A1 (en) * | 2003-04-16 | 2004-10-20 | Corus Technology BV | Preform for foamed sheet product and foamed product manufactured therefrom |
JP2006062365A (en) * | 2004-08-25 | 2006-03-09 | Heidelberger Druckmas Ag | Method for manufacturing printing plate |
US7166326B1 (en) * | 2004-12-14 | 2007-01-23 | Palo Alto Research Center (Parc) | Method of electroplating stressed metal springs |
DE102005037069B4 (en) * | 2005-08-05 | 2010-03-18 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Porous composites based on a metal and process for their preparation |
DE102006020860B4 (en) * | 2006-05-04 | 2008-02-07 | Alulight International Gmbh | Process for the production of composite bodies and composite bodies produced therefrom |
DE102014222251A1 (en) * | 2014-10-31 | 2016-05-04 | Bayerische Motoren Werke Aktiengesellschaft | Process for producing a foam structure |
DE102020208285A1 (en) * | 2020-07-02 | 2022-01-05 | HAVEL metal foam GmbH | Underride protection for a vehicle with metal foam in a hollow profile |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR615147A (en) | 1925-09-12 | 1926-12-30 | Metal product for obtaining rolled, molded or other articles, and processes for its manufacture | |
DE4101630A1 (en) | 1990-06-08 | 1991-12-12 | Fraunhofer Ges Forschung | METHOD FOR PRODUCING FOAMABLE METAL BODIES AND USE THEREOF |
DE4426627C2 (en) * | 1993-07-29 | 1997-09-25 | Fraunhofer Ges Forschung | Process for the production of a metallic composite material |
DE19501659C1 (en) * | 1995-01-20 | 1996-05-15 | Daimler Benz Ag | Method for producing component made of metal foam |
JP2000506218A (en) * | 1996-03-03 | 2000-05-23 | トーソー エスエムディー,インク. | Method of manufacturing near net type planar sputtering target and its intermediate |
DE19704968C2 (en) * | 1997-01-28 | 1999-06-02 | Mannesmann Ag | Container for storing compressed gas |
-
2000
- 2000-05-18 AU AU53896/00A patent/AU5389600A/en not_active Abandoned
- 2000-05-18 CA CA002374487A patent/CA2374487A1/en not_active Abandoned
- 2000-05-18 DE DE50000892T patent/DE50000892D1/en not_active Expired - Lifetime
- 2000-05-18 WO PCT/DE2000/001559 patent/WO2000071285A1/en active IP Right Grant
- 2000-05-18 DE DE10024004A patent/DE10024004C2/en not_active Expired - Fee Related
- 2000-05-18 EP EP00938562A patent/EP1196259B1/en not_active Expired - Lifetime
- 2000-05-18 US US10/009,708 patent/US6676896B1/en not_active Expired - Fee Related
- 2000-05-18 AT AT00938562T patent/ATE228907T1/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
DE50000892D1 (en) | 2003-01-16 |
DE10024004C2 (en) | 2002-06-06 |
EP1196259A1 (en) | 2002-04-17 |
AU5389600A (en) | 2000-12-12 |
US6676896B1 (en) | 2004-01-13 |
CA2374487A1 (en) | 2000-11-30 |
WO2000071285A1 (en) | 2000-11-30 |
ATE228907T1 (en) | 2002-12-15 |
DE10024004A1 (en) | 2000-11-23 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE19612781C1 (en) | Component made of metallic foam material, process for final shaping of this component and device for carrying out the process | |
DE4426627C2 (en) | Process for the production of a metallic composite material | |
DE19727907C2 (en) | Process for filling double-walled cavities of a double-walled exhaust pipe and double-walled, in particular exhaust pipe | |
EP1196259B1 (en) | Component comprised of a composite material containing a formable metallic material and method for producing the same | |
WO2000038863A1 (en) | Method and device for producing a profiled part consisting of metal foam and sheet metal | |
EP0588182B1 (en) | Thermally and acoustically insulating composite element, manufacturing method thereof and its use | |
DE102006049014B4 (en) | Composite sheet with high energy absorption capacity, process for its production and component | |
WO2005075279A1 (en) | Component with a joining region, method and tool for the production thereof | |
EP0997215B1 (en) | Process for manufacturing metallic composite material with foamed core | |
DE102007006156B3 (en) | Making composite with component bonded to foamed body, for e.g. reinforcement, introduces thermally-foamable pressing into cavity of component, deforms, bonds and heats | |
DE2733925C2 (en) | Process for making composite extrusions | |
DE19852277C2 (en) | Process for the production of a metallic composite material and semi-finished product for such | |
DE19912618C2 (en) | Part with partial reinforcement and process for its production | |
DE19911213C1 (en) | Composite component and method for producing the composite component | |
DE102011007937B4 (en) | Method for producing a structural component of a motor vehicle body | |
DE102015205829B4 (en) | Process for producing foamed sandwich elements | |
DE19905124C1 (en) | Method and device for producing a profile part | |
DE102017207823B4 (en) | Process for producing a foamable semi-finished product | |
DE4437398A1 (en) | Drive shaft for transmission of torque | |
WO2020182613A1 (en) | Flat product package, method for producing a material composite, and use thereof | |
DE102004036873B4 (en) | Method and device for component production | |
DE19934490C1 (en) | Production of cut blanks with sections of deviating material properties comprises foaming a foamed molding in the form of a sealed mixture of a metal powder and a gas-splitting propellant powder with a covering layer | |
WO2000078500A1 (en) | Machine tool with metal parts consisting of metal foam and method for producing the same | |
DE10241511A1 (en) | Hollow component for improving energy absorption in structures comprises metallic bonds arranged between a sturdy metallic material and a foamed metallic material | |
DE102004023547A1 (en) | Three-dimensional deformed laminar construction unit has stacked metal layers connected firmly to each other at discrete junction points |
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: 20011112 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE |
|
AX | Request for extension of the european patent |
Free format text: AL;LT;LV;MK;RO;SI |
|
GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
17Q | First examination report despatched |
Effective date: 20020529 |
|
GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20021204 Ref country code: FI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20021204 Ref country code: IE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20021204 Ref country code: GR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20021204 |
|
REF | Corresponds to: |
Ref document number: 228907 Country of ref document: AT Date of ref document: 20021215 Kind code of ref document: T |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D Free format text: NOT ENGLISH |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D Free format text: GERMAN |
|
REF | Corresponds to: |
Ref document number: 50000892 Country of ref document: DE Date of ref document: 20030116 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20030304 Ref country code: SE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20030304 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: PT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20030305 |
|
GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 20030319 |
|
NLV1 | Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act | ||
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: CY Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20030518 Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20030518 Ref country code: AT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20030518 |
|
LTIE | Lt: invalidation of european patent or patent extension |
Effective date: 20021204 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20030531 Ref country code: MC Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20030531 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: ES Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20030627 |
|
ET | Fr: translation filed | ||
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FD4D Ref document number: 1196259E Country of ref document: IE |
|
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 |
|
RAP2 | Party data changed (patent owner data changed or rights of a patent transferred) |
Owner name: FRAUNHOFER-GESELLSCHAFT ZUR FOERDERUNG DERANGEWAND |
|
26N | No opposition filed |
Effective date: 20030905 |
|
BERE | Be: lapsed |
Owner name: *FRAUNHOFER-GESELLSCHAFT ZUR FORDERUNG DER ANGEWAN Effective date: 20030531 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20040531 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20040531 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20120608 Year of fee payment: 13 Ref country code: GB Payment date: 20120522 Year of fee payment: 13 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: IT Payment date: 20120521 Year of fee payment: 13 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20120725 Year of fee payment: 13 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20130518 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20131203 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R119 Ref document number: 50000892 Country of ref document: DE Effective date: 20131203 |
|
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 Effective date: 20130518 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST Effective date: 20140131 |
|
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: 20130518 |
|
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: 20130531 |