EP1227908B1 - Verfahren zur herstellung metallischer gitternetzstrukturen - Google Patents
Verfahren zur herstellung metallischer gitternetzstrukturen Download PDFInfo
- Publication number
- EP1227908B1 EP1227908B1 EP00958218A EP00958218A EP1227908B1 EP 1227908 B1 EP1227908 B1 EP 1227908B1 EP 00958218 A EP00958218 A EP 00958218A EP 00958218 A EP00958218 A EP 00958218A EP 1227908 B1 EP1227908 B1 EP 1227908B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- refractory material
- production
- container
- foam
- foam pre
- 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
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 claims abstract description 29
- 239000006260 foam Substances 0.000 claims abstract description 27
- 239000011819 refractory material Substances 0.000 claims abstract description 21
- 229920001247 Reticulated foam Polymers 0.000 claims abstract description 4
- 239000007787 solid Substances 0.000 claims abstract description 3
- 229910052751 metal Inorganic materials 0.000 claims description 23
- 239000002184 metal Substances 0.000 claims description 23
- 239000011248 coating agent Substances 0.000 claims description 2
- 238000000576 coating method Methods 0.000 claims description 2
- 238000007788 roughening Methods 0.000 claims description 2
- 239000000126 substance Substances 0.000 abstract description 8
- 238000007711 solidification Methods 0.000 abstract description 6
- 230000008023 solidification Effects 0.000 abstract description 6
- 239000000463 material Substances 0.000 description 12
- 238000005266 casting Methods 0.000 description 7
- 150000001875 compounds Chemical class 0.000 description 7
- 238000000465 moulding Methods 0.000 description 7
- 229920005830 Polyurethane Foam Polymers 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 239000011496 polyurethane foam Substances 0.000 description 3
- 239000002243 precursor Substances 0.000 description 3
- 239000003054 catalyst Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000012467 final product Substances 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 229910052602 gypsum Inorganic materials 0.000 description 2
- 239000010440 gypsum Substances 0.000 description 2
- 229910001092 metal group alloy Inorganic materials 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 239000012778 molding material Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 229910001297 Zn alloy Inorganic materials 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 238000009750 centrifugal casting Methods 0.000 description 1
- 239000011195 cermet Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000006261 foam material Substances 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000003870 refractory metal Substances 0.000 description 1
- 238000010583 slow cooling Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D25/00—Special casting characterised by the nature of the product
- B22D25/02—Special casting characterised by the nature of the product by its peculiarity of shape; of works of art
-
- 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 process for the preparation of metallic grid structures.
- Reticular structures of metal and other materials have a broad Field of use.
- these structures can be used as components low weight, accumulator plates, electrochemical anodes and cathodes, Filters for fluids, separators for fluid media, heat shields and used for numerous other applications.
- U.S. Patent 3,616,841 which is considered to be the closest prior art discloses a process for producing an insoluble foam material with a predetermined reticulated structure.
- This method comprises the Production of a self-supporting reticulated polyurethane foam; the production a refractory mass by the cavities of the polyurethane foam be filled with a watery gypsum suspension and this Sus pension binds; heating the refractory mass to a temperature of about 120 ° C (250 ° F) over a period of two hours; the generating of cavities in the refractory molding compound by the temperature of the refractory Molding compound to 535 to 815 ° C (1000 to 1500 ° F) is increased to volatilize the entire foam; the introduction of a molten one Substance consisting of metals, metal alloys, ceramics or cermet, in the refractory molding compound, wherein the amount of the substance is sufficient to fill the cavities previously occupied by the reticulated structure were; and
- the melting of the substance introduced into the refractory molding compound is required, especially in refractory metals a large apparatus Effort or is technologically impossible to realize.
- the structure The foam is made by attaching the foams to the wax plates certainly.
- the foam structure determines the technical parameters of the final product, so that the statistical fluctuation range be as low as possible in order to ensure the achievement of the technical parameters of the final product.
- it is necessary to have the branched cavities of refractory molding compound to fill with a molten metal the molding material to warm up to temperatures above the melting temperature of the used substance lie. This causes the metal only very slowly solidifies, whereby the solidified metal receives a coarse-grained microstructure, which requires a lower strength.
- US 3,616,841 proposes various cooling methods such as spraying with water or air.
- the cooling effect is significantly attenuated because the molding material hinders the heat flow.
- the production of solid metal areas together with the grid structure is associated with the problem of very slow cooling.
- the specified process steps allow a controlled solidification of the metal in order to obtain a void-free and fine-grained microstructure, hardly or not too.
- the slow solidification of the Metal to long process times, the automated production also conflict.
- step (1) the modification of the surface of the Connect foam substructure. This is preferably done by roughening or structuring the surface of the foam precursor.
- the filling of the Molten metal in the heat-resistant container can by means of Pressure support or vacuum support done.
- Step (8) may purify the obtained grid structure and optionally modified by coating the grid structure, for example becomes.
- the method according to the invention offers several advantages.
- An adhesion of the Foam pre-structure with the sprue system and the sprue is not more necessary. This reduces the material and time consumption during production the mold significantly lowered. Furthermore, eliminates the source of error with connected to the uncontrollable bonding process, since large areas of Foam pre-structure have no connection to the sprue system. It will only the amount of refractory material needed to make the grid structure manufacture.
- the foam pre-structure protrudes after removal the mold container from the refractory molding compound out. This can be easily check if all of them disappear after the foaming preform volatilizes Bars and cells have a sufficiently good connection to the outside, to a ensure complete casting.
- the refractory shape can be heated up without delay and that the free access to the Bars and cells of the foam pre-structure accelerated volatilization the foam pre-structure allows. After the volatilization can also It is very easy to check if there are enough bars to access the molten metal to the internal structure, the "negative form" maintained. Since that refractory material is preheated before it is placed in the refractory container is, solidifies the molten metal from the outside, that is, held by the colder Container wall, inside. Through a targeted temperature control the container and the refractory material can be a void-free solidification the molten metal can be made possible.
- the refractory container has at least one opening for pouring the Molten metal in the refractory material.
- the interior is the container larger than the refractory, preheated material.
- This wall is in direct contact with the container wall, so that the solidification heat can be removed from the casting metal directly into the container wall and a fine-grained cast structure is formed.
- an optimal connection is created the webs of the grid structure to the massive wall.
- the process of the invention using the refractory Container obtained grid structures can be integrated into castings, with various casting methods such as die casting, chill casting, Centrifugal casting, low pressure casting or counter-pressure casting are produced can. Also, the grid structures themselves can by means of these methods to be poured.
- the method enables the production of lattice structures of various kinds Fineness in terms of bar strengths and cell sizes. Also combinations Different cell sizes and thicknesses in a body are possible.
- the process can be carried out continuously, as in the procedures
- the prior art required wax plates for bonding the Foam Vortechnik is omitted.
- the method is therefore an automated production of grid structures allows.
- any material can be used which has a sufficient Number of pores.
- this material is polyurethane foam.
- gypsum is preferably used.
- the Metal melt consists of metals, metal alloys, ceramics or metal ceramics. However, any castable material can be used.
- the metallic grid structures obtained by the invention can For example, as catalysts, for EMC shielding and used in batteries become. For example, for the preparation of a catalyst for Combustion stabilization of diesel fuel a Zn / Cu alloy as molten metal used, with which the refractory material is filled. In batteries For example, grid structures obtained by the invention can be used made of aluminum, and the following Step (8) be coated with lead.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Powder Metallurgy (AREA)
- Filtering Materials (AREA)
- Cell Electrode Carriers And Collectors (AREA)
- Catalysts (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Claims (6)
- Verfahren zur Herstellung metallischer Gitternetzstrukturen, wobei es die Schritte:(1) Einsetzen einer retikulierten Schaum-Vorstruktur in einen ersten, aufklappbaren Behälter;(2) Infiltrieren der Schaum-Vorstruktur mit einem feuerfesten Material;(3) Verfestigen des feuerfesten Materials;(4) Entnahme des verfestigten feuerfesten Materials mit der Schaum-Vorstruktur aus dem ersten, aufklappbaren Behälter;(5) Entfernen der Schaum-Vorstruktur aus dem feuerfesten Material;(6) Einsetzen des resultierenden, vorgewärmten Körpers in einen zweiten, hitzebeständigen Behälter;(7) Infiltrieren des Körpers mit einer Metallschmelze;(8) Entnahme des resultierenden Körpers nach dem Erstarren der Metallschmelze aus dem zweiten, hitzebeständigen Behälter und Entfernen des feuerfesten Materials
- Verfahren zur Herstellung metallischer Gitternetzstrukturen nach Anspruch 1, wobei nach der Entnahme des verfestigten feuerfesten Materials mit der Schaum-Vorstruktur aus dem ersten, aufklappbaren Behälter (Schritt 4) die Schaum-Vorstruktur aus dem feuerfesten Material herausragt.
- Verfahren zur Herstellung metallischer Gitternetzstrukturen nach Anspruch 1 oder 2, wobei im Anschluß an das Infiltrieren des Körpers mit einer Metallschmelze (Schritt 7) eine massive Wandung an die Gitternetzstruktur angegossen wird.
- Verfahren zur Herstellung metallischer Gitternetzstrukturen nach einem der Ansprüche 1 bis 3, wobei im Anschluß an Schritt 1 die Oberfläche der Schaum-Vorstruktur durch Aufrauhen modifiziert wird.
- Verfahren zur Herstellung metallischer Gitternetzstrukturen nach einem der Ansprüche 1 bis 3, wobei im Anschluß an Schritt 1 die Oberfläche der Schaum-Vorstruktur durch Strukturieren modifiziert wird.
- Verfahren zur Herstellung metallischer Gitternetzstrukturen nach einem der Ansprüche 1 bis 5, wobei im Anschluß an Schritt 8 die Oberfläche der Gitternetzstruktur durch Beschichten modifiziert wird.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19939155 | 1999-08-20 | ||
DE19939155A DE19939155A1 (de) | 1999-08-20 | 1999-08-20 | Verfahren und Vorrichtung zur Herstellung von Glitternetzstrukturen |
PCT/DE2000/002597 WO2001014086A1 (de) | 1999-08-20 | 2000-08-04 | Verfahren und vorrichtung zur herstellung von gitternetzstrukturen |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1227908A1 EP1227908A1 (de) | 2002-08-07 |
EP1227908B1 true EP1227908B1 (de) | 2003-10-29 |
Family
ID=7918788
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00958218A Expired - Lifetime EP1227908B1 (de) | 1999-08-20 | 2000-08-04 | Verfahren zur herstellung metallischer gitternetzstrukturen |
Country Status (9)
Country | Link |
---|---|
US (1) | US6857461B2 (de) |
EP (1) | EP1227908B1 (de) |
JP (1) | JP2003507192A (de) |
AT (1) | ATE252956T1 (de) |
AU (1) | AU6982700A (de) |
CA (1) | CA2381843C (de) |
DE (2) | DE19939155A1 (de) |
ES (1) | ES2209965T3 (de) |
WO (1) | WO2001014086A1 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102014118177A1 (de) | 2013-12-19 | 2015-06-25 | Mayser Gmbh & Co. Kg | Verfahren zum Herstellen von metallischen Formkörpern, metallischer Formkörper und Verfahren zum Ausbilden eines Bauteils mit einem Wärmetauscher |
DE102014118178A1 (de) | 2013-12-19 | 2015-06-25 | Mayser Gmbh & Co. Kg | Verfahren zum Herstellen einer metallischen Struktur |
Families Citing this family (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10257942A1 (de) * | 2002-12-12 | 2004-06-24 | Krauss-Maffei Wegmann Gmbh & Co. Kg | Schutzmodul zum Schutz von Objekten gegen Bedrohungen, insbesondere durch Hohlladungen |
DE10340681B4 (de) * | 2003-09-04 | 2006-09-28 | M.Pore Gmbh | Verfahren zur Herstellung einer stoffschlüssigen, wärmeleitenden Verbindung zwischen einer offenporigen Schaumstruktur und einem nichtporösen Grundkörper für Wärmeübertrager, insbesonderer Kühlkörper |
DE102004026959B3 (de) * | 2004-06-02 | 2006-02-16 | Girlich, Dieter, Dr. | Verfahren zur Herstellung metallischer Gitterstrukturen |
DE102005037141A1 (de) * | 2005-08-06 | 2007-02-08 | Syntan Gbr(vertretungsberechtigter Gesellschafter Hr. Dr. Dieter Girlich, 01309 Dresden) | Spongiös-metallisches Implantat und Verfahren zu seiner Herstellung |
EP2201306A1 (de) * | 2007-10-25 | 2010-06-30 | Bekaert Combust. Technol. B.V. | Mittels guss in einen wärmetauscher integrierter poröser metallkörper |
EP2431681A1 (de) | 2007-10-30 | 2012-03-21 | Büchi Labortechnik AG | Heizung, Verfahren zum Heizen und Laminarisieren und Sprühtrockner |
DE102007062302A1 (de) | 2007-12-21 | 2009-06-25 | Beru Ag | Heizvorrichtung |
DE102009011763B4 (de) | 2009-03-04 | 2012-11-08 | Bpe International Dr. Hornig Gmbh | Verfahren zur Herstellung einer offenporigen metallischen Gitterstruktur und hieraus bestehender Leichtbauwerkstoff |
DE102009013058A1 (de) | 2009-03-16 | 2010-09-23 | Wolfgang Kollmann | Metallische Leiterstruktur und Verfahren zu deren Herstellung |
WO2010112393A1 (en) | 2009-04-03 | 2010-10-07 | Nv Bekaert Sa | Improved heat exchanger |
WO2010112392A1 (en) | 2009-04-03 | 2010-10-07 | Nv Bekaert Sa | 3 d heat exchanger |
EP2494299B1 (de) | 2009-10-29 | 2014-09-24 | Universiteit Gent | Verfahren zur Herstellung eines Wärmetauschers |
EP2572009A1 (de) | 2010-05-20 | 2013-03-27 | Universiteit Gent | Poröses 3d-material mit bearbeiteter seite |
US9737930B2 (en) * | 2015-01-20 | 2017-08-22 | United Technologies Corporation | Dual investment shelled solid mold casting of reticulated metal foams |
US9789536B2 (en) | 2015-01-20 | 2017-10-17 | United Technologies Corporation | Dual investment technique for solid mold casting of reticulated metal foams |
US9789534B2 (en) | 2015-01-20 | 2017-10-17 | United Technologies Corporation | Investment technique for solid mold casting of reticulated metal foams |
US10035174B2 (en) | 2015-02-09 | 2018-07-31 | United Technologies Corporation | Open-cell reticulated foam |
US9884363B2 (en) * | 2015-06-30 | 2018-02-06 | United Technologies Corporation | Variable diameter investment casting mold for casting of reticulated metal foams |
US9731342B2 (en) | 2015-07-07 | 2017-08-15 | United Technologies Corporation | Chill plate for equiax casting solidification control for solid mold casting of reticulated metal foams |
CN109513907A (zh) * | 2018-11-07 | 2019-03-26 | 三峡大学 | 一种二十四面螺旋体结构泡沫铝的制备方法 |
CN110449563B (zh) * | 2019-08-30 | 2020-11-10 | 西安交通大学 | 一种碳化硅陶瓷-镍基合金复合材料零件及其制备方法 |
CN112355277B (zh) * | 2019-10-29 | 2022-02-08 | 沈阳铸造研究所有限公司 | 一种高熔点Kelvin结构点阵金属及其制备方法与应用 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3946039A (en) * | 1967-10-30 | 1976-03-23 | Energy Research & Generation, Inc. | Reticulated foam structure |
US3616841A (en) * | 1967-10-30 | 1971-11-02 | Energy Research And Generation | Method of making an inorganic reticulated foam structure |
US3996991A (en) * | 1973-11-13 | 1976-12-14 | Kubota, Ltd. | Investment casting method |
JPS5344427A (en) * | 1976-10-05 | 1978-04-21 | Kubota Ltd | Method to manufacture propellers by using extinguishable pattern |
JPS6340663A (ja) * | 1986-08-05 | 1988-02-22 | Miyagawa Kasei Kogyo Kk | 鉛蓄電池用集電体グリツドの鋳造装置 |
JPS6384758A (ja) * | 1986-09-29 | 1988-04-15 | Nippon Steel Corp | 複合鋳造品の製造方法 |
-
1999
- 1999-08-20 DE DE19939155A patent/DE19939155A1/de not_active Withdrawn
-
2000
- 2000-08-04 AT AT00958218T patent/ATE252956T1/de not_active IP Right Cessation
- 2000-08-04 CA CA002381843A patent/CA2381843C/en not_active Expired - Lifetime
- 2000-08-04 JP JP2001518212A patent/JP2003507192A/ja not_active Withdrawn
- 2000-08-04 AU AU69827/00A patent/AU6982700A/en not_active Abandoned
- 2000-08-04 WO PCT/DE2000/002597 patent/WO2001014086A1/de active IP Right Grant
- 2000-08-04 DE DE50004277T patent/DE50004277D1/de not_active Expired - Lifetime
- 2000-08-04 EP EP00958218A patent/EP1227908B1/de not_active Expired - Lifetime
- 2000-08-04 ES ES00958218T patent/ES2209965T3/es not_active Expired - Lifetime
-
2002
- 2002-02-20 US US10/079,331 patent/US6857461B2/en not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102014118177A1 (de) | 2013-12-19 | 2015-06-25 | Mayser Gmbh & Co. Kg | Verfahren zum Herstellen von metallischen Formkörpern, metallischer Formkörper und Verfahren zum Ausbilden eines Bauteils mit einem Wärmetauscher |
DE102014118178A1 (de) | 2013-12-19 | 2015-06-25 | Mayser Gmbh & Co. Kg | Verfahren zum Herstellen einer metallischen Struktur |
Also Published As
Publication number | Publication date |
---|---|
CA2381843A1 (en) | 2001-03-01 |
JP2003507192A (ja) | 2003-02-25 |
US6857461B2 (en) | 2005-02-22 |
US20020088598A1 (en) | 2002-07-11 |
WO2001014086A1 (de) | 2001-03-01 |
EP1227908A1 (de) | 2002-08-07 |
ES2209965T3 (es) | 2004-07-01 |
ATE252956T1 (de) | 2003-11-15 |
CA2381843C (en) | 2009-01-27 |
AU6982700A (en) | 2001-03-19 |
DE19939155A1 (de) | 2001-02-22 |
DE50004277D1 (de) | 2003-12-04 |
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