EP2852457A1 - Procédé de fabrication d'un corps d'isolation thermique - Google Patents

Procédé de fabrication d'un corps d'isolation thermique

Info

Publication number
EP2852457A1
EP2852457A1 EP13726455.2A EP13726455A EP2852457A1 EP 2852457 A1 EP2852457 A1 EP 2852457A1 EP 13726455 A EP13726455 A EP 13726455A EP 2852457 A1 EP2852457 A1 EP 2852457A1
Authority
EP
European Patent Office
Prior art keywords
marked
shaped body
curved
curvature
section
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.)
Withdrawn
Application number
EP13726455.2A
Other languages
German (de)
English (en)
Inventor
Bodo Benitsch
Sinisa Milovukovic
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SGL Carbon SE
Original Assignee
SGL Carbon SE
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by SGL Carbon SE filed Critical SGL Carbon SE
Publication of EP2852457A1 publication Critical patent/EP2852457A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • 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
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • 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
    • B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B32/00—Carbon; Compounds thereof
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
    • C04B35/52—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbon, e.g. graphite
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
    • C04B35/52—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbon, e.g. graphite
    • C04B35/522—Graphite
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
    • C04B35/52—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbon, e.g. graphite
    • C04B35/524—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbon, e.g. graphite obtained from polymer precursors, e.g. glass-like carbon material
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
    • C04B35/52—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbon, e.g. graphite
    • C04B35/528—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbon, e.g. graphite obtained from carbonaceous particles with or without other non-organic components
    • C04B35/532—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbon, e.g. graphite obtained from carbonaceous particles with or without other non-organic components containing a carbonisable binder
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/71—Ceramic products containing macroscopic reinforcing agents
    • C04B35/78—Ceramic products containing macroscopic reinforcing agents containing non-metallic materials
    • C04B35/80—Fibres, filaments, whiskers, platelets, or the like
    • C04B35/83—Carbon fibres in a carbon matrix
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/76—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to heat only
    • E04B1/78—Heat insulating elements
    • E04B1/80—Heat insulating elements slab-shaped
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L59/00—Thermal insulation in general
    • F16L59/02—Shape or form of insulating materials, with or without coverings integral with the insulating materials
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L59/00—Thermal insulation in general
    • F16L59/02—Shape or form of insulating materials, with or without coverings integral with the insulating materials
    • F16L59/028—Composition or method of fixing a thermally insulating material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D1/00—Casings; Linings; Walls; Roofs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D1/00—Casings; Linings; Walls; Roofs
    • F27D1/04—Casings; Linings; Walls; Roofs characterised by the form, e.g. shape of the bricks or blocks used
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/18—Details relating to the spatial orientation of the reactor
    • B01J2219/185—Details relating to the spatial orientation of the reactor vertical
    • 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
    • B32B1/00—Layered products having a non-planar shape
    • B32B1/08—Tubular products
    • 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
    • B32B2250/00—Layers arrangement
    • B32B2250/05—5 or more layers
    • 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
    • B32B2250/00—Layers arrangement
    • B32B2250/20—All layers being fibrous or filamentary
    • 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
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/10—Inorganic fibres
    • B32B2262/106—Carbon fibres, e.g. graphite fibres
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/304—Insulating
    • 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
    • B32B2313/00—Elements other than metals
    • B32B2313/04—Carbon
    • 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
    • B32B2597/00—Tubular articles, e.g. hoses, pipes
    • 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
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/0004—Cutting, tearing or severing, e.g. bursting; Cutter details
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/48—Organic compounds becoming part of a ceramic after heat treatment, e.g. carbonising phenol resins
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
    • C04B2235/52—Constituents or additives characterised by their shapes
    • C04B2235/5208—Fibers
    • C04B2235/526—Fibers characterised by the length of the fibers
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/60—Aspects relating to the preparation, properties or mechanical treatment of green bodies or pre-forms
    • C04B2235/602—Making the green bodies or pre-forms by moulding
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
    • C04B2235/94—Products characterised by their shape
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/25—Process efficiency
    • 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
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]

Definitions

  • the present invention relates to a method for producing a clay isola- tion body of a carbonized fibers and / or graphitized fibers comprising material and in particular from a carbonized fibers and / or graphitized fibers comprising felt material.
  • Heat insulation bodies made of carbon felts are used, for example, in high-temperature installations in the production of silicon monocrystals. Such high temperature processes, which occur, for example, at a temperature of over 800 ° C under an inert atmosphere, make high thermal and mechanical demands on the insulating materials used. Insulator, which e.g. lining an interior of a high-temperature furnace and thus separating the heating chamber from the cooled outer wall are often made of carbonized and possibly graphitized felts.
  • the production of a heat insulation body of several individual parts offers the advantage of lower raw material waste and a more efficient high-temperature aftertreatment felt material.
  • WO 201 1/106580 A2 discloses an insulator made of a carbon fiber material for a reactor, which is composed of a plurality of plate-like individual components. The individual components may be coupled by "tongue-and-groove" connectors using further connectors.
  • heat insulating bodies composed of several individual parts are difficult to produce from flat plates, as is the case, for example, with cylindrical insulations produced close to the final shape.
  • heat-insulating bodies of carbon-based felts must be subjected to a high-temperature treatment for carbonizing and graphitizing the starting product.
  • This high temperature treatment is often inefficient in the case of multiple parts because placing a large number of parts in a given furnace is time consuming and must be mostly assisted by charging aids which result in furnace loading being performed only at a relatively low packing rate , Especially with irregularly shaped, strongly curved or even hollow cylindrical parts, there is an undesirably high dead volume in the heating chamber.
  • the formation of several differently shaped items, for example by hot pressing due to the amount of molds to be provided with a lot of effort.
  • the object is achieved by a method for producing a heat-insulating body having the features of claim 1 and in particular by a method for producing a heat-insulating body from a material comprising carbonized fibers and / or graphitized fibers, comprising the following steps:
  • At least one planar molded body is made of a material comprising carbonized fibers and / or graphitized fibers, preferably of hardened felt material comprising carbonized fibers and / or graphitized fibers, wherein the shaped body has at least one first curved section and at least one second curved section and wherein the first portion and the second portion have an opposing curvature relative to at least one spatial direction.
  • the first curved portion is separated from the second curved portion by dividing the molded body to at least a first curved portion To get item and a second curved item.
  • the individual parts are then joined together to form a heat insulation body, which has a curvature which continues uniformly relative to the spatial direction.
  • dividing the shaped body means the production of at least two separate individual parts from a previously integral component, wherein the dividing need not necessarily occur in half.
  • a two-dimensional form body is understood to be a form body which has no cavities and whose extent in one particular spatial direction is substantially less than in the other two spatial directions. The smaller dimension is then referred to as "thickness" as usual.
  • curvature course is meant without a change from positive to negative curvature, that is to say without an inflection point, wherein the value of the curvature does not necessarily have to be the same everywhere.
  • the shaped body has two oppositely curved sections, that is, for example, in cross-section S-shaped configured, based on the component overall, a smaller curvature before.
  • the molded body can thus be handled better than if the two sections were curved in the same direction.
  • the arrangement of a plurality of moldings in a high-temperature installation - for example, in the context of carbonization and carbonation necessary for the production of carbon-based felts and graphitization - with a relatively large packing rate is possible because the shaped body is not shaped like a hollow profile due to the different curvature, but rather like a plate. In this way, therefore, the unwanted dead volume in the heating chamber of a high temperature system can be considerably reduced.
  • the invention it has been found, in particular, that it is more favorable in terms of manufacture to provide differently curved sections to be separated later on, thereby accepting the additional process step of cutting, since the overall production efficiency is higher than the usual procedure, according to which the individual parts can be formed separately or the heat insulating body is made in one piece, can be considerably increased.
  • the high-temperature treatment in a corresponding furnace is particularly time-consuming and costly, so that an increase in efficiency here also has a particularly favorable effect on the entire manufacturing process.
  • a shaped body is provided in which the curvature of the first section and the opposite curvature of the second section compensate each other.
  • a shaped body which, in a first approximation - that is to say averaged over the entire shaped body extent - is unconstrained.
  • Such a "quasi-flat" shaped body is not only easier to produce than e.g. a strongly curved plate or a hollow profile, but also easier to handle, for example, stackable.
  • a preferred embodiment of the invention provides that, in step b), the parts of the shaped body are split at an inflection point at which the curvature behavior of the shaped body changes with respect to the spatial direction. In the subsequent joining of the items to a heat insulating body in step c) can thus - after a corresponding rotation and / or moving one of the individual parts - a uniform transition with respect to the curvature can be achieved.
  • a shaped body which has at least two further curved sections, wherein in each case the Compensate curvatures of two successive sections.
  • a shaped body with a wave-shaped cross-section is provided in step a).
  • Such a corrugated plate or wave plate is particularly easy to manufacture and manageable.
  • the individual parts can be joined together in step c) to form a heat insulation body, which forms an at least locally closed hollow profile at least in a cross-sectional plane extending in the spatial direction.
  • Such hollow sections are particularly suitable for lining the heating chamber of a high-temperature furnace.
  • the individual parts can be joined together in step c) to form a heat insulating body in the form of a hollow cylinder, wherein the cylinder longitudinal axis extends at right angles to the spatial direction.
  • a heat insulating body in the form of a hollow cylinder, wherein the cylinder longitudinal axis extends at right angles to the spatial direction.
  • High-temperature furnaces often have a cylindrical interior for technical and economic reasons.
  • a hollow cylindrical heat insulating body such an interior can be isolated in a simple manner.
  • step a) a sheet-like molded body having a uniform thickness be provided.
  • the shaped body is divided in step b) such that the individual parts have an identical shape. This will Not only the assembly is easy, but also a possible intermediate storage of the individual parts. Likewise, given the equality of the components a certain amount of redundancy, so that defective components can be replaced quickly and easily.
  • the shaped body can be divided in step b), in particular by cutting apart, dicing or milling apart. Depending on the application, however, other separation processes, for example thermal, chemical or electrochemical separation processes as well as laser or water jet cutting, can be used.
  • a preferred embodiment of the invention provides that prior to assembly of the individual parts according to step b), the second item or each second item is rotated by 180 °. As a result, the curvature behavior of the two items is changed such that both items have respect to the spatial direction of the same direction curvatures.
  • a hardenable starting material can be pressed into the shaped body and then hardened.
  • This type of molding technique can be used with high efficiency, e.g. by pressing.
  • curable starting material in particular comminuted, carbonized fibers and / or graphitized fibers comprising felt elements can be provided in a matrix of a carbonizable resin.
  • a felt material has proven to be particularly favorable in connection with the method according to the invention.
  • Under crushed felt elements are felt pieces with a length of less than 10,000 mm, preferably less than 1, 000 mm and more preferably less than 100 mm to understand.
  • the resin in particular, a phenol resin, a pitch, a furan resin, a phenyl ester, an epoxy resin or any mixture of two or more of the aforementioned compounds can be provided. From such starting materials particularly effective insulation can be produced.
  • the compression of the starting material to include separate reinforcing layers of a fabric, scrim, fiber structure or a film, preferably a graphite foil, or a combination thereof.
  • Such reinforcing layers can considerably improve the mechanical and abrasive stability and the thermal insulating effect of the component to be manufactured.
  • the compression of the starting material is carried out in a metal mold. This mold can be used advantageously for the production of a variety of similar moldings.
  • the production of the shaped body takes place such that a mold is filled with the pourable starting material, which has a bottom with a wave-shaped profile, and that the mold is closed after filling with a lid , which also has a wave-shaped profile.
  • the wave-shaped profiles of the lid and the bottom are transferred to the shaped body to be created, which consequently comprises a multiplicity of cylinder segments which alternate with one another. Therefore, the production of a single molded article in the mold provides the basis for a plurality of cylinder segments which are later assembled into cylindrical bodies.
  • the starting material in the die is subjected to a hot pressing operation. With such a hot pressing process, a particularly efficient production of moldings is possible.
  • the hot pressing operation at a pressure of 10 to 30 N / cm 2 , more preferably from 15 to 25 N / cm 2 , at a temperature of 120 ° C to 250 ° C, more preferably from 160 ° C to 200 ° C, and / or over a period of 60 to 320 minutes, more preferably over 200 to 280 minutes performed.
  • the starting material can be precompressed before the hot pressing process in the mold at room temperature in order to make the actual hot pressing more efficient.
  • the mold body may be subjected to a high-temperature process before dividing, which takes place at a temperature of at least 600 ° C. It is advantageous to subject the molded body rather than the separate items to the high temperature process because it is easier, faster, and more efficient in terms of usable process space to locate the compact body and preferably a compact stack of moldings in the heating chamber of a high temperature furnace than an accumulation of loose items. Particularly good insulating properties are achieved here if the high-temperature process comprises carbonization carried out at a temperature of 800 ° C. to 1200 ° C. and / or graphitization carried out at a temperature of 1500 ° C. to 2200 ° C. and / or thermal cleaning.
  • the invention also relates to a heat insulating body obtainable by a method as described above.
  • such a thermal insulation body has a thermal conductivity measured in the radial direction at 2000 ° C. of at most 1.5 W / (mK) and particularly preferably of at most 0.8 W / (mK), measured in accordance with DIN 51936.
  • a thermal conductivity measured in the radial direction at 2000 ° C. of at most 1.5 W / (mK) and particularly preferably of at most 0.8 W / (mK), measured in accordance with DIN 51936.
  • DIN 51936 it is preferred that such a heat insulation body measured according to DIN EN 658-3 compressive strength and / or measured according to DIN EN 658-2 and DIN 51910 flexural strength of at least 0.2 MPa, preferably of at least 0.5 MPa and more preferably of at least 0.8 MPa.
  • Such a heat insulating body is sufficiently stable for the relatively hard mechanical requirements in a high temperature environment.
  • FIG. 1 is a perspective view of a molded article provided according to a method of the present invention for producing a heat insulating body.
  • FIG. 2 shows a side view of the shaped body according to FIG. 1.
  • FIG. 1 is a perspective view of a molded article provided according to a method of the present invention for producing a heat insulating body.
  • FIG. 2 shows a side view of the shaped body according to FIG. 1.
  • FIG. 3 shows an enlarged detail of the view according to FIG. 2.
  • FIG. 4 shows a heat insulation body which has been produced by a method according to the invention.
  • a sheet-like molded body 1 1 of hardened carbon felt is provided, which has the shape of a wave plate.
  • a pourable, curable starting material is first produced by carbonized and graphitized, chopped felt elements and a powdered synthetic resin having a sufficiently high carbon content. lenstoffausbeute be mixed with each other until a sufficient degree of mixing is achieved. Subsequently, a closed mold on five sides, preferably made of metal, filled with a loose bed of this starting material. The bed height is preferably initially about 2 to 5 times higher than the desired final thickness of the molded body to be created. The mold has a bottom with a wavy contour.
  • the mold is closed by a lid which, like the bottom has a wavy contour.
  • the wavy contours of the bottom and the cover are designed such that after lowering the lid to the desired end position results in a uniform thickness of the compact relative to the surface normal of its outer surfaces.
  • the lid is now moved within the fixed inner walls of the mold in the direction of the bottom of the mold, in which case a pre-compaction can be carried out at room temperature.
  • the die is fed to a hot press and the starting material is compressed at a pressure of about 20 N / cm 2 and a temperature of about 180 ° C over a period of about 240 minutes. As a result, the starting material is cured.
  • the molded body 11 can be removed as an inherently stable component of the press mold.
  • the molded body 1 1 Due to the wave contours of the bottom and the lid of the mold, the molded body 1 1 forms a corrugated plate, in which seen in a transverse direction Q alternately upward curved cylinder segments 13 A and according to the Fig. 2 2 downward curved cylinder segments follow one another.
  • the curvature behavior of the molded body 11 thus changes in each case to turning lines 15 which run parallel to one another and at right angles to the transverse direction Q.
  • the corrugated molded body 1 1 is then subjected to a post-treatment. Specifically, a carbonization process is carried out at about 900 ° C, then a graphitization process at about 2200 ° C and, if necessary, then additionally a thermal cleaning carried out.
  • This post-treatment produces an insulating material which can be used under inert atmosphere at temperatures of 2000 ° C. It has surprisingly been found that such a pressed and thermally treated insulating material at each point of the wave plate profile according to DIN 51936 measured thermal conductivity in the radial direction at 2000 ° C of at most 1, 5 W / (mK).
  • the molded body 1 1 is then cut along the turning lines 15. Here, the differently curved cylinder segments 13A, 13B are separated from each other. To facilitate the cutting, 15 notches 17 are provided on both outer surfaces of the molded body 1 1 along the turning lines.
  • the cylinder segments 13A, 13B are then joined together again, wherein, however, all the cylinder segments 13B curved downwards as shown in FIG. 2 are rotated about an axis of rotation D running parallel to the turning lines 15, so that the curvature behavior of the resulting component no longer changes during assembly, but rather one continuous curvature is present.
  • the rotation could also take place, for example, about an axis running parallel to the transverse direction, as long as only the change of curvature between the cylinder segments 13A, 13B is canceled.
  • the assembly of the cylinder segments 13A, 13B may be accomplished using joining techniques known in the art, such as by gluing. As many cylinder segments 13A, 13B are joined together until a closed hollow cylindrical profile 17 shown in FIG. Ches has a cylinder longitudinal axis L and which is used as a heat insulating body in a furnace system with a cylindrical heating chamber.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Organic Chemistry (AREA)
  • Structural Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Composite Materials (AREA)
  • Physics & Mathematics (AREA)
  • Architecture (AREA)
  • Acoustics & Sound (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Thermal Insulation (AREA)
  • Inorganic Fibers (AREA)
  • Ceramic Products (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Nonwoven Fabrics (AREA)

Abstract

Procédé de fabrication d'un corps d'isolation thermique à partir d'un matériau contenant des fibres carbonées et/ou des fibres graphitées, selon lequel un corps plan est préparé à partir d'un matériau contenant des fibres carbonées et/ou des fibres graphitées, ledit corps comportant au moins une première section incurvée et au moins une seconde section incurvée, la première section incurvée et la seconde section incurvée présentant, par rapport à au moins une direction dans l'espace, une incurvation contraire. La première section incurvée est séparée de la seconde section incurvée du fait que ledit corps est divisé de manière telle qu'au moins une première partie individuelle incurvée et une seconde partie individuelle incurvée sont conservées. Les parties individuelles sont assemblées pour former un corps d'isolation thermique de manière telle que ce dernier présente , par rapport à la direction dans l'espace, une incurvation continue et régulière.
EP13726455.2A 2012-05-23 2013-05-22 Procédé de fabrication d'un corps d'isolation thermique Withdrawn EP2852457A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012208595A DE102012208595A1 (de) 2012-05-23 2012-05-23 Verfahren zum Herstellen eines Wärmeisolationskörpers
PCT/EP2013/060545 WO2013174885A1 (fr) 2012-05-23 2013-05-22 Procédé de fabrication d'un corps d'isolation thermique

Publications (1)

Publication Number Publication Date
EP2852457A1 true EP2852457A1 (fr) 2015-04-01

Family

ID=48570079

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13726455.2A Withdrawn EP2852457A1 (fr) 2012-05-23 2013-05-22 Procédé de fabrication d'un corps d'isolation thermique

Country Status (7)

Country Link
US (1) US20150079317A1 (fr)
EP (1) EP2852457A1 (fr)
JP (1) JP2015523950A (fr)
KR (1) KR20150013847A (fr)
CN (1) CN104334270B (fr)
DE (1) DE102012208595A1 (fr)
WO (1) WO2013174885A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107387946A (zh) * 2017-07-24 2017-11-24 苏州宏久航空防热材料科技有限公司 一种能在高温条件下使用的真空绝热材料
TWI695956B (zh) * 2019-04-01 2020-06-11 國立勤益科技大學 碳纖維爐架結構及其製造方法
JP6841883B2 (ja) * 2019-09-02 2021-03-10 日本碍子株式会社 成形型
DE102020202793A1 (de) * 2020-03-04 2021-09-09 Sgl Carbon Se Elektrisch entkoppelte Hochtemperaturthermoisolation

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT261867B (de) * 1964-02-04 1968-05-10 Walter Ing Witschnig Bauelement
DE1434664A1 (de) * 1964-12-02 1969-01-30 Graf Hagenburg Kg Aus aneinandergereihten Bauelementen zusammengesetztes Bauwerk,wie Gewaechshaus,Kleintreibhaus,Halle,Garage,Dach u.dgl.
JPS5069642A (fr) * 1973-10-23 1975-06-10
US5005531A (en) * 1989-02-13 1991-04-09 Nelson Thomas E Thermal insulation jacket
JP3163683B2 (ja) * 1991-10-09 2001-05-08 三菱化学株式会社 筒形炭素繊維断熱材の製造方法
DE4338459C2 (de) * 1993-11-11 2003-05-08 Sgl Carbon Ag Wärmeisolierender Hohlzylinder
ATE424297T1 (de) * 2006-05-04 2009-03-15 Sgl Carbon Ag Hochtemperaturbeständiger verbundwerkstoff
JP2008037674A (ja) * 2006-08-02 2008-02-21 Kobe Steel Ltd ガラス状炭素製炉心管の製造方法
CN100526782C (zh) * 2006-09-29 2009-08-12 东北大学 碳素煅烧回转窑内供风管隔热设备及其制备、使用方法
DE102009048422A1 (de) * 2009-10-06 2011-04-07 Sgl Carbon Se Verbundwerkstoff aus Carbonfaser-Weichfilz und Carbonfaser-Hartfilz
TW201139764A (en) * 2010-02-26 2011-11-16 Morgan Advanced Materials And Technology Inc Carbon-based containment system
KR20120130005A (ko) 2010-02-26 2012-11-28 모건 어드밴스드 머티리얼즈 앤 테크놀러지 인크 탄소계 격납 시스템

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
None *
See also references of WO2013174885A1 *

Also Published As

Publication number Publication date
JP2015523950A (ja) 2015-08-20
DE102012208595A1 (de) 2013-11-28
KR20150013847A (ko) 2015-02-05
WO2013174885A1 (fr) 2013-11-28
CN104334270A (zh) 2015-02-04
CN104334270B (zh) 2016-06-15
US20150079317A1 (en) 2015-03-19

Similar Documents

Publication Publication Date Title
DE60205733T2 (de) Ringförmiger vorkörper für bremsen aus kohlenstofffasern und herstellungsverfahren
EP1106334B1 (fr) Procédé pour la fabrication d'un article en matière composite renforcé par des fibres ainsi que dispositif pour sa fabrication
EP2486179A1 (fr) Matériau composite en feutre souple de fibres de carbone et feutre dur de fibres de carbone
EP1154970B1 (fr) Corps ceramique renforce par des fibres et son procede de production
DE102011007815B4 (de) Verfahren zum Herstellen eines aus mehreren Vorkörpern zusammengefügten Keramikbauteils
DE3827126A1 (de) Hohler verbundkoerper mit einer symmetrieachse, sowie herstellungsverfahren hierfuer
DE3545793C2 (fr)
DE3530459A1 (de) Faserverbundkoerper, insbesondere als warmpressform, sowie herstellungsverfahren hierfuer
DE60115964T2 (de) Form und verfahren zur herstellung eines mit kühlöffnungen versehenen bremsbelages aus verbundwerkstoff
EP0175877B1 (fr) Corps en carbone polygranuleux et procédé de sa fabrication
EP2852457A1 (fr) Procédé de fabrication d'un corps d'isolation thermique
EP1323686B1 (fr) Procédé de fabrication des corps creux de matériaux céramiques à renfort de fibres
EP3368261A2 (fr) Système de noyau, utilisation du système de noyau dans la fabrication d'un élément composite renforcé par fibres et procédé de fabrication d'un élément composite renforcé par fibres
WO2017072187A1 (fr) Élément composite en céramique de carbure renforcée par des fibres de carbone
EP0499040B1 (fr) Garnissage résistant à la corrosion et au chaleur utilisable pour des procédés d'échange de masse et de chaleur
EP1845075B1 (fr) Corps en carbone renforcés par des fibres en carbone et un procédé pour fabriquer lesmêmes.
DE3614574C2 (fr)
DE10234400B3 (de) Verfahren zur Herstellung von Hohlkörpern aus faserverstärkten keramischen Materialien, Hohlkörper und deren Verwendung
EP2852801A1 (fr) Corps d'isolation thermique et procédé de fabrication dudit corps
DE102011110206A1 (de) Formwerkzeug
WO2000016424A1 (fr) Plaque de matiere plastique et son procede de production
EP3105197B1 (fr) Procédé de production d'un élément d'isolation modulaire
DE3234777A1 (de) Graphitform fuer das drucksintern
WO2012038461A1 (fr) Composition de matériau servant d'outil ou destiné à un outil et son procédé de production
DE102020107041A1 (de) Vorrichtung und Verfahren zur Herstellung von kohlenstofffaserverstärkten Kunststoffhalbzeugen

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: 20141223

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

DAX Request for extension of the european patent (deleted)
RIC1 Information provided on ipc code assigned before grant

Ipc: F27D 1/04 20060101AFI20180522BHEP

Ipc: B32B 7/04 20060101ALI20180522BHEP

Ipc: F16L 59/02 20060101ALI20180522BHEP

Ipc: C04B 35/532 20060101ALI20180522BHEP

Ipc: B32B 38/00 20060101ALI20180522BHEP

Ipc: B32B 1/08 20060101ALI20180522BHEP

Ipc: C04B 35/524 20060101ALI20180522BHEP

Ipc: C04B 35/83 20060101ALI20180522BHEP

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

INTG Intention to grant announced

Effective date: 20180703

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20181114