EP0997215B1 - Verfahren zur Herstellung eines metallischen Verbundwerkstoffs mit geschäumtem Kern - Google Patents
Verfahren zur Herstellung eines metallischen Verbundwerkstoffs mit geschäumtem Kern Download PDFInfo
- Publication number
- EP0997215B1 EP0997215B1 EP99121390A EP99121390A EP0997215B1 EP 0997215 B1 EP0997215 B1 EP 0997215B1 EP 99121390 A EP99121390 A EP 99121390A EP 99121390 A EP99121390 A EP 99121390A EP 0997215 B1 EP0997215 B1 EP 0997215B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- mixture
- powder
- facings
- composite
- pressure device
- 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
- 239000002131 composite material Substances 0.000 title claims abstract description 27
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 12
- 238000000034 method Methods 0.000 title claims description 21
- 239000000843 powder Substances 0.000 claims abstract description 44
- 239000000203 mixture Substances 0.000 claims abstract description 43
- 229910052751 metal Inorganic materials 0.000 claims abstract description 28
- 239000002184 metal Substances 0.000 claims abstract description 28
- 239000011343 solid material Substances 0.000 claims abstract description 3
- 239000003380 propellant Substances 0.000 claims description 5
- 238000007493 shaping process Methods 0.000 claims description 5
- 239000012298 atmosphere Substances 0.000 claims description 3
- 238000005097 cold rolling Methods 0.000 claims description 3
- 239000006260 foam Substances 0.000 claims description 3
- 238000005098 hot rolling Methods 0.000 claims description 3
- 230000003647 oxidation Effects 0.000 claims description 3
- 238000007254 oxidation reaction Methods 0.000 claims description 3
- 230000001681 protective effect Effects 0.000 claims description 3
- 239000012299 nitrogen atmosphere Substances 0.000 claims description 2
- 238000003825 pressing Methods 0.000 abstract description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 12
- 238000007639 printing Methods 0.000 description 11
- 239000000463 material Substances 0.000 description 9
- 238000005187 foaming Methods 0.000 description 8
- 239000004604 Blowing Agent Substances 0.000 description 6
- 229910052782 aluminium Inorganic materials 0.000 description 6
- -1 titanium hydride Chemical compound 0.000 description 6
- 239000011265 semifinished product Substances 0.000 description 5
- 229910000048 titanium hydride Inorganic materials 0.000 description 5
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 238000005096 rolling process Methods 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000004381 surface treatment Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 2
- 239000011863 silicon-based powder Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910000680 Aluminized steel Inorganic materials 0.000 description 1
- 229940037003 alum Drugs 0.000 description 1
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 235000010216 calcium carbonate Nutrition 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 238000001311 chemical methods and process Methods 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- BUACSMWVFUNQET-UHFFFAOYSA-H dialuminum;trisulfate;hydrate Chemical compound O.[Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O BUACSMWVFUNQET-UHFFFAOYSA-H 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000004088 foaming agent Substances 0.000 description 1
- 150000004677 hydrates Chemical class 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 238000010297 mechanical methods and process Methods 0.000 description 1
- 230000005226 mechanical processes and functions Effects 0.000 description 1
- 150000002731 mercury compounds Chemical class 0.000 description 1
- 229910052987 metal hydride Inorganic materials 0.000 description 1
- 150000004681 metal hydrides Chemical class 0.000 description 1
- 239000006262 metallic foam Substances 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 229910000027 potassium carbonate Inorganic materials 0.000 description 1
- 235000011181 potassium carbonates Nutrition 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 1
- 235000017557 sodium bicarbonate Nutrition 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 235000017550 sodium carbonate Nutrition 0.000 description 1
- 235000011121 sodium hydroxide Nutrition 0.000 description 1
- 238000007669 thermal treatment Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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
- 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
- B22F7/04—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 with one or more layers not made from powder, e.g. made from solid metal
-
- 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
- B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
Definitions
- the invention relates to a method for producing a metallic composite material comprehensive cover layers made of solid material and one between them located foamable core consisting of a mixture of at least one metal powder and at least one gas-releasing propellant powder, from the cover layers and the mixture is made into a composite, optionally after shaping is treated thermally in such a way that the core is foamed.
- a corresponding method can be found in DE 44 26 627 C2. This will start with the foamable core by compression by means of pressure and temperature Mixture of at least one metal powder and at least one gas-releasing Propellant powder produced. Then there is a surface treatment of both the core as well as the cover layers, which can be sheet metal blanks unwound from a coil. Then the foamable core, which can be called a semi-finished product, is placed between the cover layers arranged to so by cold or hot rolling or diffusion welding formed package an intimate connection between the cover layers and the core manufacture. Then a shaping takes place by pressing, bending or deep drawing of the resulting association. Finally, the composite thus produced is thermally Process heated such that foaming of the core is triggered without it melting of the outer layers.
- DE 41 24 591 C1 relates to a method for producing foamable metal bodies by rolling, the required powder mixture being filled into a hollow metal profile and is rolled.
- different shapes are required to produce different shapes Hollow metal profiles required. If the hollow metal profiles have small cross sections, it poses problems to introduce the powder mixture in the required tightness.
- a semi-finished product is produced, that is by compression and solidifying a mixture of metal powder and blowing agent. thereupon can provide the semi-finished product with a solid metal sheet on at least one side in order to subsequently reshape the composite and heat treat it Foaming metal powder containing foaming agents.
- a foamable body that is, one with closed porosity, which then plated.
- the present invention is based on the problem of a method as described above Kind in such a way that there is a procedural simplification in the manufacture of foamable metal bodies, whereby it should be ensured that the Mixture containing blowing agent powder for the production of the foamable core in required Scope is compressed.
- the problem is solved in that, in a common process step, the cover layers are formed together with the mixture to form the composite by the action of pressure, the cover layers being guided through the printing device at a distance from one another, the mixture being filled between the cover layers guided at a distance from one another, and these being put together be connected to the cover layers in the printing device.
- the mixture is fed to the printing device in an oxidation-protected manner.
- the mixture is introduced or filled in between the cover layers in a protective gas atmosphere such as an N 2 atmosphere.
- a further development provides that the mixture together with the cover layers in the Printing device can be connected to the composite by cold or hot rolling.
- the invention there is a method for producing metallic composite materials proposed, in which not only the closed-pore core is first produced in order to treat it after a surface treatment with those that are also on the core side To connect surfaces of the cover layers. Rather, in a single or simultaneously running process step, the mixture with the non-foamable mixture Cover layers pressed to provide a composite, which is then in usual way of shaping z. B. subjected to pressing, bending or deep drawing can then be heated in such a way that the composite so produced that foaming of the core takes place without, however, the melting temperature of the outer layers is achieved. There is a high degree of variability in the dimensioning of the network given, since the distance between the cover layers can be adjusted easily can, which in turn dictates the density of the composite.
- the sheet materials such the printing device be fed that there is a hopper for the powder.
- the printing device can a roll stand with a large number of successive layers on the composite pulyer / core / top layer acting rollers include.
- the powder during feeding into the printing device or compressed immediately before.
- the powder can be continuous or discontinuous are fed to the printing device, wherein pre-compression by means of screws, Stamping or equivalent mechanical devices can be done.
- the cover layer material which is preferably drawn off from a coil, can are treated on the surface during feeding into the printing device, e.g. B. by brushing, etching or other suitable chemical or mechanical processes, provided that it should not be ensured that the coil material itself is not oxidized on the mixture side or has no impurities or defects, which one over the entire area material combination would have a negative impact.
- blowing agents in the mixture are conventional blowing agents, such as metal hydrides such as B. titanium hydride or carbonates such.
- cover layer metals which also form part of the mixture can be used as the cover layer are, but also significantly higher melting materials, such as steel sheets, which may be treated galvanically (e.g. aluminized) to improve them produce metallic composite.
- steel sheets preferably aluminized cover plates (aluminized on one side, in order to improve plating behavior and to achieve an ideal cohesive bond).
- a powder mixture of aluminum powder and 12% by weight silicon powder and 0.8% by weight Titanium hydride powder is made between two metal strips that run along pressure rollers Filled with aluminum, the pressure rollers exerting pressure on the metal strips Apply powder mixture.
- the temperature during rolling is about 300 ° C to 400 ° C.
- the thus manufactured composite with a total thickness of 4 mm was in an ideal foam temperature preheated oven foamed.
- Aluminum-based sandwich sheets were about 10 mm after the foaming process.
- a powder mixture of pure aluminum powder and 0.8 wt.% Titanium hydride was between introduced through a rolling device aluminized steel strips and by means of Pressure between the steel sheets is compressed, due to increased process temperatures a metallic bond between the layers could be made.
- the way Composite with a total thickness of 4.8 mm was produced in an ideal foaming temperature preheated oven foamed. The thickness of the manufactured in this way Aluminum-based sandwich sheets were around 12.5 mm after the foaming process.
- a powder mixture of aluminum powder and 12% by weight silicon powder and 0.8% by weight Titanium hydride powder is made between two metal strips that run along pressure rollers Aluminum filled, the pressure rollers exerting pressure on the metal strips Apply powder mixture.
- the temperature during rolling is 300 ° C to 400 ° C.
- the flat composite was turned into a spatially curved one Formed structure and then exposed to an ideal foaming temperature, to foam up the core. The result is a foamed end product with a thickness of approx. 14 mm based on a semi-finished product thickness that was 4.0 mm.
- a device to be used to carry out the method according to the invention is pure in principle the single figure can be seen the further details, advantages and features conveyed the invention.
- a plate or strip-shaped composite 10 having a sandwich structure consisting of a core 12 and covering these on opposite sides
- a printing device 18 with rollers 20, 22 is used, between which the cover layers 14, 16 are drawn off on the one hand by coils (not shown) forming sheet metal strips 24, 26 and, on the other hand, a powder mixture 28 to be pressed to produce the composite 10.
- the strip material used is preferably that of aluminum, high-melting aluminum alloys or other metals, preferably sheet steel, optionally aluminized.
- the powder 28 itself consists of a mixture of a metal powder, preferably in the form of aluminum, and a gas-releasing propellant powder, such as. B. titanium hydride or calcium carbonate.
- the proportion by weight of the blowing agent powder is preferably 0.2 to 1% by weight of the powder 28 itself.
- the powder 28 can be supplied in a protective gas atmosphere such as N 2 to the space between the metal strips 24, 26.
- the powder 28 can be removed from a silo in which the powder 28 is protected against oxidation.
- the sheet metal strips 24, 26 at least in front of the rollers 20, 22 and in the area of which are guided between boundaries running along the longitudinal edge, to prevent the powder 28 from escaping sideways.
- the side Limits can be formed as a stamp in order to easily adapt to strip materials different widths.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Composite Materials (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Powder Metallurgy (AREA)
- Laminated Bodies (AREA)
- Cell Electrode Carriers And Collectors (AREA)
Description
Claims (8)
- Verfahren zur Herstellung von einem metallischen Verbundwerkstoff umfassend Deckschichten aus massivem Material sowie einem zwischen diesen vorhandenen aufschäumbaren Kern bestehend aus einer Mischung aus mindestens einem Metallpulver und mindestens einem gasabspaltenden Treibmittelpulver, wobei aus den Deckschichten und der Mischung ein Verbund hergestellt wird, der nach gegebenenfalls einer Formgebung thermisch derart behandelt wird, dass der Kern aufschäumt,
dadurch gekennzeichnet, dass in einem gemeinsamen Verfahrensschritt durch Druckeinwirkung die Deckschichten zusammen mit der Mischung zu dem Verbund ausgebildet werden, wobei die Deckschichten zueinander beabstandet durch die Druckeinrichtung geführt werden, zwischen die zueinander beabstandet geführten Deckschichten die Mischung eingefüllt wird und diese zusammen mit den Deckschichten in der Druckeinrichtung verbunden werden. - Verfahren nach Anspruch 1,
dadurch gekennzeichnet, dass die Mischung zusammen mit den Deckschichten in der Druckeinrichtung durch Kalt- oder Warmwalzen zu dem Verbund verbunden werden. - Verfahren nach Anspruch 1 oder 2,
dadurch gekennzeichnet, dass die Mischung während des Zuführens in die Druckeinrichtung oder unmittelbar zuvor verdichtet wird. - Verfahren nach einem oder mehreren der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass die Mischung oxidationsgeschützt der Druckeinrichtung zugeführt wird. - Verfahren nach einem oder mehreren der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass die Mischung in Schutzgasatmosphäre zwischen die Deckschichten eingeführt bzw. eingefüllt wird. - Verfahren nach einem oder mehreren der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass die Mischung vor dem Zuführen zu der Druckeinrichtung unter N2-Atmosphäre gelagert wird. - Verfahren nach einem oder mehreren der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass die Mischung kontinuierlich oder diskontinuierlich der Druckeinrichtung zugeführt wird. - Verfahren nach einem oder mehreren der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass die Deckschicht vor dem Zuführen der Mischung mischungsseitig vorbehandelt wird.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19849600A DE19849600C1 (de) | 1998-10-28 | 1998-10-28 | Verfahren zur Herstellung von einem metallischen Verbundwerkstoff |
| DE19849600 | 1998-10-28 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0997215A2 EP0997215A2 (de) | 2000-05-03 |
| EP0997215A3 EP0997215A3 (de) | 2000-11-22 |
| EP0997215B1 true EP0997215B1 (de) | 2003-09-03 |
Family
ID=7885859
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP99121390A Expired - Lifetime EP0997215B1 (de) | 1998-10-28 | 1999-10-27 | Verfahren zur Herstellung eines metallischen Verbundwerkstoffs mit geschäumtem Kern |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0997215B1 (de) |
| AT (1) | ATE248676T1 (de) |
| DE (2) | DE19849600C1 (de) |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL1014116C2 (nl) | 2000-01-19 | 2001-07-20 | Corus Aluminium Walzprod Gmbh | Werkwijze en inrichting voor het vormen van een laminaat van gecomprimeerd metaalpoeder met een schuimmiddel tussen twee metaallagen, en daarmee gevormd produkt. |
| DE10042569C1 (de) * | 2000-08-25 | 2002-04-04 | Christian Steglich | Verfahren und Einrichtung zur Herstellung von Verbundwerkstoffen mit einem Kern aus Metallschaum |
| DE10136370B4 (de) * | 2001-07-26 | 2005-03-31 | Schwingel, Dirk, Dr. | Verbundwerkstoff und daraus hergestelltes Bauteil bestehend aus einem aufgeschäumten Metallkern und massiven Deckblechen, sowie Verfahren zur Herstellung |
| DE102006025933A1 (de) * | 2006-05-10 | 2007-11-22 | WKW Erbslöh Automotive GmbH | Dachreling sowie Verfahren zur Herstellung einer solchen Dachreling |
| DE102008027798A1 (de) | 2008-06-11 | 2009-12-24 | Helmholtz-Zentrum Berlin Für Materialien Und Energie Gmbh | Aluminiumlegierung für Metallschäume, ihre Verwendung und Verfahren zur Herstellung |
| DE102009020004A1 (de) * | 2009-05-05 | 2010-11-11 | Helmholtz-Zentrum Berlin Für Materialien Und Energie Gmbh | Pulvermetallurgisches Verfahren zur Herstellung von Metallschaum |
| AT509976B1 (de) * | 2010-12-13 | 2012-01-15 | Wien Stadt | Tracheostomaverschluss |
| DE202013103272U1 (de) | 2013-07-22 | 2014-10-23 | Wegener International Gmbh | Heizeinrichtung für die Plastifizierung von Werkstücken aus einem thermoplastischen Kunststoff |
| DE102015205829B4 (de) | 2015-03-31 | 2017-01-05 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Verfahren zur Herstellung von geschäumten Sandwichelementen |
| EP3427850B1 (de) * | 2016-03-11 | 2020-12-30 | Nippon Steel Corporation | Titanmaterial und verfahren zur herstellung davon |
| DE102017121511A1 (de) | 2017-09-15 | 2019-03-21 | Pohltec Metalfoam Gmbh | Verfahren zur Herstellung eines Halbzeuges für einen Verbundwerkstoff |
| WO2019053181A1 (de) | 2017-09-15 | 2019-03-21 | Pohltec Metalfoam Gmbh | Verfahren zum schäumen von metall mit wärmekontakt |
| DE102017121513A1 (de) | 2017-09-15 | 2019-03-21 | Pohltec Metalfoam Gmbh | Verfahren zum Schäumen von Metall im Flüssigkeitsbad |
| DE102017121512A1 (de) | 2017-09-15 | 2019-03-21 | Pohltec Metalfoam Gmbh | Verfahren zum Schäumen von Metall mit Wärmekontakt |
| DE102021126310A1 (de) * | 2021-10-11 | 2023-04-13 | HAVEL metal foam GmbH | Verfahren und Vorrichtung zum Herstellen einer aufschäumbaren, bandförmigen Presspulver-Metallplatine mittels Kaltwalzen sowie Presspulver-Metallplatine |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1347062A (fr) * | 1962-10-19 | 1963-12-27 | Yawata Iron & Steel Co | Procédé de fabrication de tôles métalliques et de tôles métalliques composites par un procédé de frittage et laminage de poudre métallique |
| DE4101630A1 (de) * | 1990-06-08 | 1991-12-12 | Fraunhofer Ges Forschung | Verfahren zur herstellung aufschaeumbarer metallkoerper und verwendung derselben |
| DE4124591C1 (en) * | 1991-01-21 | 1993-02-11 | Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung Ev, 8000 Muenchen, De | Foamable metal body prodn. with reduced density differences - by charging hollow section with mixt. of powder contg. expanding agent and metal powder, and precompacting |
| DE4426627C2 (de) * | 1993-07-29 | 1997-09-25 | Fraunhofer Ges Forschung | Verfahren zur Herstellung eines metallischen Verbundwerkstoffes |
| US5564064A (en) * | 1995-02-03 | 1996-10-08 | Mcdonnell Douglas Corporation | Integral porous-core metal bodies and in situ method of manufacture thereof |
| DE19612781C1 (de) * | 1996-03-29 | 1997-08-21 | Karmann Gmbh W | Bauteil aus metallischem Schaumwerkstoff, Verfahren zum Endformen dieses Bauteils und Vorrichtung zur Ausführung des Verfahrens |
-
1998
- 1998-10-28 DE DE19849600A patent/DE19849600C1/de not_active Expired - Fee Related
-
1999
- 1999-10-27 DE DE59906842T patent/DE59906842D1/de not_active Expired - Fee Related
- 1999-10-27 AT AT99121390T patent/ATE248676T1/de not_active IP Right Cessation
- 1999-10-27 EP EP99121390A patent/EP0997215B1/de not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| ATE248676T1 (de) | 2003-09-15 |
| DE59906842D1 (de) | 2003-10-09 |
| DE19849600C1 (de) | 2001-02-22 |
| EP0997215A3 (de) | 2000-11-22 |
| EP0997215A2 (de) | 2000-05-03 |
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