US20060014451A1 - Method for producing a porous, plate-type metallic composite - Google Patents

Method for producing a porous, plate-type metallic composite Download PDF

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Publication number
US20060014451A1
US20060014451A1 US10/533,438 US53343805A US2006014451A1 US 20060014451 A1 US20060014451 A1 US 20060014451A1 US 53343805 A US53343805 A US 53343805A US 2006014451 A1 US2006014451 A1 US 2006014451A1
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Prior art keywords
metallic
fibers
fusing
fused
metallic fibers
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Abandoned
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US10/533,438
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English (en)
Inventor
Ulrich Muller
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Melicon GmbH
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Melicon GmbH
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Application filed by Melicon GmbH filed Critical Melicon GmbH
Assigned to MELICON GMBH reassignment MELICON GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: MULLER, ULRICH
Publication of US20060014451A1 publication Critical patent/US20060014451A1/en
Abandoned legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/162—Selection of materials
    • G10K11/168—Plural layers of different materials, e.g. sandwiches
    • 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
    • B22F3/002—Manufacture of articles essentially made from metallic fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K11/00—Resistance welding; Severing by resistance heating
    • B23K11/002—Resistance welding; Severing by resistance heating specially adapted for particular articles or work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/14—Layered products comprising a layer of metal next to a fibrous or filamentary layer
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
    • F23M20/00—Details of combustion chambers, not otherwise provided for, e.g. means for storing heat from flames
    • F23M20/005—Noise absorbing means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
    • F23R3/00—Continuous combustion chambers using liquid or gaseous fuel
    • F23R3/002—Wall structures
    • 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
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/10—Scrim [e.g., open net or mesh, gauze, loose or open weave or knit, etc.]
    • Y10T442/102—Woven scrim
    • Y10T442/109—Metal or metal-coated fiber-containing scrim
    • 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
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/10—Scrim [e.g., open net or mesh, gauze, loose or open weave or knit, etc.]
    • Y10T442/102—Woven scrim
    • Y10T442/109—Metal or metal-coated fiber-containing scrim
    • Y10T442/121—Including a nonwoven fabric which is not a scrim
    • 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
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/10—Scrim [e.g., open net or mesh, gauze, loose or open weave or knit, etc.]
    • Y10T442/102—Woven scrim
    • Y10T442/159—Including a nonwoven fabric which is not a scrim
    • 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
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
    • Y10T442/654—Including a free metal or alloy constituent
    • 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
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
    • Y10T442/654—Including a free metal or alloy constituent
    • Y10T442/655—Metal or metal-coated strand or fiber material

Definitions

  • the invention relates to a method of producing a porous, plate-shaped metallic composite. Also the subject matter of the invention is a sound-absorbing panel.
  • porous, plate-shaped metallic composites which can be used, for example, as light construction elements or sound dampening panels, are known from the state of the art.
  • DE 39 35 120 discloses a method of producing metallic composite panels, according to which two outer, non-perforated metallic panels having a bridging material in the form of a metal grating of wire disposed between them are interconnected.
  • the special feature of this method is that the grating intersections of the metallic grating, prior to a connection of the metallic grating with the metallic panels, are first rolled flat by means of a rolling process to the thickness of a wire, so that thereafter the grating intersections of the metallic grating can be welded or glued with the metallic panels.
  • Advantageously obtained in this manner is a metallic composite panel that can still be further processed by a subsequent forming process.
  • a further method of producing metallic composite panels is known from DE 20 57 474.
  • porous metallic fiber panels as well as a method of producing the same.
  • the method described here is characterized by the use of a fiber fleece that at a temperature between 1000 and 150° C. is pressed in locally determined regions with a pressure of 700 N/cm 2 to 1200 N/cm 2 , whereby only in these predetermined regions is a sintering of the fibers also effected.
  • a metallic fiber panel that is sintered only in certain regions, and that has an adequately great strength, yet also has regions with a relatively large fiber surface.
  • a sintering metallurgical method for producing a filter body of smelt extracted metallic fibers is used, for example, for producing a porous body, especially a filter body of fibers, in particular metallic fibers.
  • the loose fibers, which are present as bulk material are separated by agitation, are filled into a mold, and a charge is subsequently heated to sinter it.
  • a solid and stable porous body that can be used, for example, as a filter body.
  • sintered metallic fiber materials in the area of sound dampening.
  • the use of such sintered metallic fiber materials has proven itself, for example, for reducing noise emission in gas turbines.
  • the sintering step is typically effected at a temperature that is between the liquid temperature and the solid temperature of the material that is used.
  • the fiber length and the fiber diameter of the fibers that are to be interconnected by sintering can vary greatly, whereby the fiber diameter can be in the range of 1 ⁇ m to 250 ⁇ m and the fiber length can be in the range of between 50 ⁇ m to 50 mm.
  • the sintering process is carried out in a vacuum oven.
  • the actual sintering times are in the range of many hours, whereby the material that is to be sintered is provided into the sintering process in a mechanically compacted or initially pressed state.
  • the sintered bodies produced in this manner are cut to size after the process has been carried out, and can then be used, for example, as acoustical dampening material, and can be placed, for example, in exhaust gas mufflers of gas turbines.
  • the known methods have the drawback that due to the size of the sintering ovens that are available, it is possible to produce only such sintered bodies that are limited in their geometrical configuration in correspondence to the size of the oven used. If, for example, sintered bodies of the aforementioned type are produced that at least in their length exceed a size of, for example, 1500 mm, this is not possible using the aforementioned method. In order nevertheless to be able to produce such sintered bodies, it is necessary to first produce relatively small sintered bodies in a first method step that are then appropriately interconnected in a second method step, for example being glued or welded together. The drawback of carrying out such a method is that it is not only time consuming but also expensive.
  • the invention should also propose a sound-dampening panel.
  • the invention proposes a method of producing a porous, plate-shaped composite according to which metallic fibers are pressed and welded or fused together in a single step.
  • metallic fibers are introduced into a welding or fusing device provided therefor.
  • the metallic fibers are preferably processed in the form of prefabricated metallic fiber mats that are wound off from a roll, for example as quasi endless mats.
  • the metallic fibers are present as bulk material, to possibly first separate them in a first step and subsequently to supply them as loose metallic fiber material to the fusing device.
  • the introduction into the fusing device can be effected continuously, so that in the further carrying out of the method, metallic composite panels having an unlimited length dimension can be produced.
  • the fibers introduced into the fusing device are then compacted and fused together in a single step, for which purpose laminar electrodes are advantageously disposed on both sides of the metallic composite that is to be formed, with the electrodes serving on the one hand for fusing the individual metallic fibers, and on the other hand also serving for the application of an adequate pressure.
  • the fusing process is advantageously the pulse fusing process, preferably the capacitator pulse fusing process, whereby the electrodes that are used have a laminar area of preferably between 10 mm 2 and 25,000 mm 2 .
  • a particular characteristic of the capacitor pulse fusing process is the relatively short duration of the actual fusing process, which is generally less than is; in conjunction with carrying out the inventive method, it can even be less than 10 ms.
  • the metallic fibers of the metallic composite Prior to and/or during the fusing process, the metallic fibers of the metallic composite are subjected to a pressure, whereby the pressure is preferably produced with a pressing force of 0.1 N/mm 2 to 10 N/mm 2 , preferably from 1.5 N/mm 2 to 6 N/mm 2 .
  • the advantage of the inventive method is further that the metallic composite, which is composed on a basis of individual metallic fibers, due to the electrical charge that acts in a shock-type manner, additionally has its structure compacted. As a result, an overall greater compaction of the metallic composite can be achieved during the fusing process.
  • the metallic fibers which are present as bulk material or in the form of mats, can be endlessly supplied to the electrodes in sections at least in one dimension.
  • the width of the metallic composite can be selected to be 10 mm to 2000 mm, preferably 250 mm to 1250 mm.
  • the fibers have an average diameter of 1 ⁇ m to 250 ⁇ m, preferably from 30 ⁇ m to 100 ⁇ m.
  • the metallic fibers that are used can have the same thickness, but a different length, whereby precisely by the use of metallic fibers having different lengths, a very stable fiber structure, i.e. a fiber matrix, is formed during the compression and fusion.
  • a metallic composite that is produced pursuant to the inventive method can, subsequent to its manufacture, be finished and used as a sound-absorbing medium, and can be placed, for example, in a muffler system or exhaust gas pipe of a turbine.
  • the significant advantages over heretofore known metallic composites that are produced by sintering consists in the unlimited measurements, at least relative to one dimension, as well as the considerably more favorable manufacturing costs. Additionally, due to the possibility of the capacitor pulse fusing process, the thickness of the metallic composites can be influenced without requiring a further finishing step, such as rolling. There also results in this way an additional savings in cost, which is also advantageous relative to the conventional process.
  • a further advantage is that the metallic composite produced pursuant to the inventive method can be further processed in subsequent processing steps.
  • the metallic composite produced pursuant to the method is possible via plastic shaping or molding, for example by deep drawing, to also transform the metallic composite produced pursuant to the method to geometrically complex structures.
  • spherical shaped bodies can also be formed. Since the metallic composite produced pursuant to the inventive method is resistant to heat, it is particularly suitable as sound dampening in combustion turbines.
  • the inventively produced metallic composite is also suitable as a gas burner insert that advantageously enables a homogeneous combustion on the entire surface of the burner.
  • inert gas Suitable inert gases are, for example, argon, helium and the like.
  • the two flat sides of the metallic composite are respectively fused with a wire mesh as a cover layer.
  • the arrangement of such wire meshes is advantageous to the extent that the method can to a large extent be carried out independently of the length and diameter of the fibers used, which can lead to ends of individual fibers extending out of the metallic composites.
  • both sides of the fiber composite are fused with a wire mesh as a cover layer.
  • a fusing of the wire can advantageously be carried out at the same time as the fusing of the metallic fibers, so that no additional step is required as a consequence of the fusing of the cover layers.
  • a sound-dampening panel is proposed that is formed of a metallic fiber fleece, the metallic fibers of which are fused together, that is disposed between two cover layers.
  • the individual metallic fibers of the inventive sound-dampening panel are not connected with one another in a material-flowing manner by sintering, but rather by fusing or welding.
  • This permits not only a relatively economical manufacture of the sound-dampening panels, but it is also possible to continuously produce the sound-dampening panels, at least with respect to one geometrical dimension, so that a quasi endless metallic fiber fleece can be produced.
  • the metallic fiber fleece it is then finished to length as required.
  • a metallic fiber fleece is fused on both of its opposite flat sides with a cover layer, which is preferably formed of wire mesh.
  • a cover layer which is preferably formed of wire mesh.
  • the inventive sound-dampening panel is advantageously inherently stable, yet nevertheless permits a further processing in a subsequent processing step.
  • the inventively produced metallic composites are suitable in particular as sound-dampening panels.
  • the originally present porosity of the metallic fibers that are joined together to form the later metallic composite also remains to a great extent present after a fusing of individual metallic fibers, so that the inventive sound-dampening panels have a relatively greater porosity than do the sound-dampening panels that are known from the state of the art and are produced by sintering.
  • the inventive sound-dampening panels can therefore exhibit an improved emission characteristic relative to conventional sound-dampening panels.
  • a further possibility of use for the inventive metallic composite is the use as a gas burner insert.
  • An advantage in this connection is the multiple applicability due to the possible geometrical variety of shapes due, for example, to plastic shaping, the controlled and determinable expansion during thermal expansion, the low weight, as well as the guarantee of a homogeneous combustion over the entire surface of the burner.
  • the inventive metallic composite offers a high reliability against flame rebound, corrosion protection even at higher temperatures, a high mechanical resistance to shock, as well as a low thermal inertion.
  • FIG. 1 in a schematic illustration, the inventive method pursuant to a first step
  • FIG. 2 in a schematic illustration, the inventive method pursuant to a second step
  • FIG. 3 in a schematic illustration, the inventive method pursuant to a third step.
  • FIGS. 1 to 3 show how to carry out the inventive method.
  • a first method step is schematically illustrated in FIG. 1
  • a second method step in FIG. 2 is schematically illustrated in FIG. 1
  • a third step in FIG. 3 is schematically illustrated in FIG. 1 .
  • a first method step the metallic fibers 1 as non-compressed fibrous material, are overlaid on both opposite planar sides with a respective wire mesh 2 .
  • a respective laminar electrode 3 is provided, both of which are respectively moved in the direction toward the metallic fibers 1 and thus bring and press together the wire meshes 2 and the metallic fibers 1 in the manner of pliers or tongs.
  • This method step is schematically illustrated in FIG. 2 .
  • the electrodes 3 with a pre-defined force F, are moved together, for example hydraulically, to such an extent until a defined surface load i.e. a defined pressure, is applied to the metallic fibers 1 and the wire mesh 2 .
  • a defined surface load i.e. a defined pressure
  • current is introduced into the electrodes 3 via the power lead 4 .
  • the introduction of power is inventively effected via capacitors that are not illustrated in this figure, whereby as a result of abrupt discharge of the capacitors, a short and strong current pulse of up to 200,000 A is conveyed through the wire meshes 2 and the metallic fibers 1 .
  • FIG. 3 shows the finished metallic fiber composite, which is built up in a sandwich-like manner and, as cover layers has two wire meshes between which are disposed the metallic fibers 1 , which are pressed together and fused with one another.
  • the wire meshes 2 are fused with the metallic fibers 1 , so that an overall stable, porous and sound-absorbing metallic composite results that nonetheless at the same time still enables the possibility of a further processing by, for example, deep drawing.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Manufacturing & Machinery (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Powder Metallurgy (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Laminated Bodies (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)
  • Nonwoven Fabrics (AREA)
  • Chemically Coating (AREA)
US10/533,438 2002-10-31 2003-10-30 Method for producing a porous, plate-type metallic composite Abandoned US20060014451A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10250716A DE10250716C1 (de) 2002-10-31 2002-10-31 Verfahren zur Herstellung eines porösen, plattenförmigen Metallverbundes
DE10250716.3 2002-10-31
PCT/EP2003/012045 WO2004039580A1 (de) 2002-10-31 2003-10-30 Verfahren zur herstellung eines porösen, plattenförmigen metallverbundes

Publications (1)

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US20060014451A1 true US20060014451A1 (en) 2006-01-19

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US10/533,438 Abandoned US20060014451A1 (en) 2002-10-31 2003-10-30 Method for producing a porous, plate-type metallic composite

Country Status (9)

Country Link
US (1) US20060014451A1 (enExample)
EP (1) EP1558443B2 (enExample)
JP (1) JP4903383B2 (enExample)
CN (1) CN1708397A (enExample)
AT (1) ATE363381T1 (enExample)
AU (1) AU2003283320A1 (enExample)
DE (2) DE10250716C1 (enExample)
ES (1) ES2285210T3 (enExample)
WO (1) WO2004039580A1 (enExample)

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US20070151242A1 (en) * 2004-06-03 2007-07-05 Abb Turbo Systems Ag Vibration suppressor
US20080118702A1 (en) * 2005-06-17 2008-05-22 Emitec Gesellschaft Fur Emissionstechnologie Mbh Process for Producing a Honeycomb Body with a Metallic Fleece, Honeycomb Body Produced by the Process and Process for Filtering an Exhaust-Gas Stream
US20090013659A1 (en) * 2006-01-13 2009-01-15 Emitec Gesellschaft Fur Emissionstechnologie Mbh Apparatus and Method for Discontinuous Welding of Metallic Fibers, Method for Filtering Exhaust Gases and Exhaust-Gas Treatment Component
US20110306261A1 (en) * 2009-02-25 2011-12-15 Basf Se Method for producing flexible metal contacts
US20140269210A1 (en) * 2011-10-18 2014-09-18 Bae Systems Plc Transducer for acoustic communications
US9782853B2 (en) 2014-08-14 2017-10-10 Melicon Gmbh Gas diffusion electrode
DE102022209312A1 (de) * 2022-09-07 2024-03-07 Siemens Energy Global GmbH & Co. KG Verfahren zur Herstellung eines Verbunds von Streckgittern, Stapel von Streckgittern und Portalmaschine

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DE10357693B4 (de) * 2003-12-10 2010-04-15 Melicon Gmbh Verfahren zur Herstellung metallischer Gewebelaminate
DE102009003363B4 (de) * 2009-01-20 2013-01-10 Webasto Ag Heizgerät-Faserverdampfer
DE102010012416A1 (de) * 2010-03-23 2011-09-29 Dbw Holding Gmbh Bauteil und Formteil sowie Herstellungsverfahren hierfür
CN109226959B (zh) * 2018-10-26 2020-08-25 同济大学 一种纤维增强金属基复合板材及其预处理方法
CN112610984B (zh) * 2020-12-14 2022-11-11 上海航天化工应用研究所 一种适用于高温高压的燃气隔离装置
CN113245684A (zh) * 2021-05-28 2021-08-13 中国石油化工股份有限公司 金属微纤材料及其定型方法、制备方法和应用

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US7900449B2 (en) * 2004-06-03 2011-03-08 Wartsila Finland Oy Vibration suppressor
US20080118702A1 (en) * 2005-06-17 2008-05-22 Emitec Gesellschaft Fur Emissionstechnologie Mbh Process for Producing a Honeycomb Body with a Metallic Fleece, Honeycomb Body Produced by the Process and Process for Filtering an Exhaust-Gas Stream
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US20140269210A1 (en) * 2011-10-18 2014-09-18 Bae Systems Plc Transducer for acoustic communications
US9860646B2 (en) * 2011-10-18 2018-01-02 Bae Systems Plc Transducer for acoustic communications
US9782853B2 (en) 2014-08-14 2017-10-10 Melicon Gmbh Gas diffusion electrode
DE102022209312A1 (de) * 2022-09-07 2024-03-07 Siemens Energy Global GmbH & Co. KG Verfahren zur Herstellung eines Verbunds von Streckgittern, Stapel von Streckgittern und Portalmaschine

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AU2003283320A1 (en) 2004-05-25
CN1708397A (zh) 2005-12-14
ES2285210T3 (es) 2007-11-16
EP1558443B1 (de) 2007-05-30
ATE363381T1 (de) 2007-06-15
JP4903383B2 (ja) 2012-03-28
DE10250716C1 (de) 2003-12-24
EP1558443A1 (de) 2005-08-03
EP1558443B2 (de) 2015-03-04
WO2004039580A1 (de) 2004-05-13
JP2006504878A (ja) 2006-02-09

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