DE3831812A1 - Process for producing complicated components of silicon-infiltrated silicon carbide - Google Patents
Process for producing complicated components of silicon-infiltrated silicon carbideInfo
- Publication number
- DE3831812A1 DE3831812A1 DE19883831812 DE3831812A DE3831812A1 DE 3831812 A1 DE3831812 A1 DE 3831812A1 DE 19883831812 DE19883831812 DE 19883831812 DE 3831812 A DE3831812 A DE 3831812A DE 3831812 A1 DE3831812 A1 DE 3831812A1
- Authority
- DE
- Germany
- Prior art keywords
- silicon
- component
- silicon carbide
- parts
- individual parts
- 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- Withdrawn
Links
Classifications
-
- 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
- C04B37/00—Joining burned ceramic articles with other burned ceramic articles or other articles by heating
- C04B37/003—Joining burned ceramic articles with other burned ceramic articles or other articles by heating by means of an interlayer consisting of a combination of materials selected from glass, or ceramic material with metals, metal oxides or metal salts
- C04B37/005—Joining burned ceramic articles with other burned ceramic articles or other articles by heating by means of an interlayer consisting of a combination of materials selected from glass, or ceramic material with metals, metal oxides or metal salts consisting of glass or ceramic material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
- F28F21/04—Constructions of heat-exchange apparatus characterised by the selection of particular materials of ceramic; of concrete; of natural stone
-
- 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
- C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
- C04B2237/02—Aspects relating to interlayers, e.g. used to join ceramic articles with other articles by heating
- C04B2237/04—Ceramic interlayers
- C04B2237/06—Oxidic interlayers
- C04B2237/062—Oxidic interlayers based on silica or silicates
-
- 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
- C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
- C04B2237/30—Composition of layers of ceramic laminates or of ceramic or metallic articles to be joined by heating, e.g. Si substrates
- C04B2237/32—Ceramic
- C04B2237/36—Non-oxidic
- C04B2237/365—Silicon carbide
-
- 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
- C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
- C04B2237/50—Processing aspects relating to ceramic laminates or to the joining of ceramic articles with other articles by heating
- C04B2237/76—Forming laminates or joined articles comprising at least one member in the form other than a sheet or disc, e.g. two tubes or a tube and a sheet or disc
- C04B2237/765—Forming laminates or joined articles comprising at least one member in the form other than a sheet or disc, e.g. two tubes or a tube and a sheet or disc at least one member being a tube
-
- 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
- C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
- C04B2237/50—Processing aspects relating to ceramic laminates or to the joining of ceramic articles with other articles by heating
- C04B2237/84—Joining of a first substrate with a second substrate at least partially inside the first substrate, where the bonding area is at the inside of the first substrate, e.g. one tube inside another tube
Abstract
Description
Die vorliegende Erfindung betrifft ein Verfahren nach dem Oberbegriff des 1. Anspruchs. Der Werkstoff Siliziuminfiltriertes Siliziumkarbid (SiSiC) findet aufgrund seiner guten mechanischen und chemischen Eigenschaften zunehmend Beachtung, so z. B. auch im Bau von Röhrenwärmetauschern. Diese sind bislang analog zu dem beim Wärmetauscherbau aus metallischen Komponenten angewendeten Verfahren aus je für sich hergestellten, zum Teil als Normteile (z. B. Rohre) verfügbaren Teilen zusammengesetzt worden, wobei die Fügung teils formschlüssig (z. B. durch Einschrauben der mit Gewinde versehenen Rohrenden in die Rohrböden) und teils auch stoffschlüssig (z. B. durch Einlöten der Rohrenden in den Rohrboden) erfolgt. Bei beiden Fügeverfahren müssen so hohe Anforderungen an die Paßgenauigkeit der Teile gestellt werden, daß diese nur durch Nachbearbeitung der fertig gebrannten Einzelteile hergestellt werden kann; so müssen zwischen zu verlötenden Teilen sehr enge, genau definierte Spalte eingehalten werden. Wegen der Härte des SiSiC ist eine Bearbeitung desselben nur mit diamantbestückten Werkzeugen möglich und entsprechend aufwendig.The present invention relates to a method according to the General term of the 1st claim. The material Silicon infiltrated silicon carbide (SiSiC) takes place due to its good mechanical and chemical properties increasing attention, e.g. B. also in the construction of Tubular heat exchangers. So far, these have been analogous to those for Heat exchanger construction from metallic components applied Processes from individually manufactured, partly as standard parts (e.g. pipes) available parts have been assembled, whereby the joint partially form-fitting (e.g. by screwing in the threaded pipe ends in the tube sheets) and partly also cohesively (e.g. by soldering the pipe ends into the Tube sheet). Both joining processes must be as high Requirements are placed on the fit of the parts, that this can only be done by reworking the finished Items can be made; so must between soldering parts very narrow, precisely defined gaps be respected. Because of the hardness of SiSiC is one Machining of the same only with diamond-tipped tools possible and correspondingly complex.
Aufgabe der vorliegenden Erfindung ist ein Verfahren, das die Herstellung von komplizierter geformten Bauteilen, wie es z. B. Röhrenwärmetauscher sind, aus SiSiC gestattet, ohne daß dazu die Einzelteile vor dem Fügen aufwendig nachbearbeitet werden müssen. Die stoffschlüssige Verbindung der Einzelteile zum ganzen Bauteil soll darüber hinaus eine erhöhte Gewähr für die Dichtigkeit und Korrosionsbeständigkeit der Verbindung bieten und infolge ihrer Homogenität unempfindlicher gegen von außen eingebrachte Spannungen oder andere Einflüsse, z. B. Vibrationen, sein.The object of the present invention is a method which Manufacture of more complex molded components, such as. B. Tubular heat exchangers made of SiSiC are permitted without this the individual parts are elaborately reworked before joining have to. The integral connection of the individual parts to whole component should also provide an increased guarantee for Provide tightness and corrosion resistance of the connection and due to its homogeneity less sensitive to outside introduced tensions or other influences, e.g. B. Vibrations.
Die Lösung der Aufgabe erfolgt durch die im kennzeichnenden Teil des 1. Anspruchs angegebenen Schritte. Ein grundsätzlich ähnliches Verfahren ist aus der Keramik-Industrie unter dem Begriff "Garnieren" bekannt, doch erfolgt hier die Umwandlung des Vorproduktes zum gebrauchsfähigen keramischen Werkstoff ausschließlich durch die Einwirkung der Wärme. Im vorliegenden Fall dagegen werden zunächst Einzelteile aus nur einer Komponente zusammengesetzt und erst anschließend mit der zweiten Komponente in Verbindung gebracht. Die zunächst zusammengesetzten "grünen" Einzelteile brauchen nicht besonders maßgenau zu sein, da die zwischen ihnen verbleibenden Spalte unschwer mit einer Schlämme aus dem gleichen Werkstoff aufgefüllt werden können; dabei entsteht eine völlig homogene stoffschlüssige Verbindung.The problem is solved by the in the characteristic Part of the 1st claim specified steps. A basically Similar process is from the ceramics industry under the The term "garnish" is known, but this is where the conversion takes place of the preliminary product to a usable ceramic material exclusively through the action of heat. In the present On the other hand, individual parts are made from just one Component assembled and only then with the second component. The first composite "green" items don't need special to be accurate because of the gaps remaining between them easily with a slurry of the same material can be replenished; this creates a completely homogeneous integral connection.
Da die Größe der Ofenanlagen bzw. Siliziumbäder, in denen die zusammengesetzten Teile der Tränkung unterzogen werden, notwendigerweise begrenzt ist und unter Umständen nicht dazu ausreicht, um in ihnen z. B. einen ganzen Wärmetauscher unterzubringen, wird in Ausgestaltung der Erfindung im 2. Anspruch vorgeschlagen, nur die komplizierter geformten Bereiche des gesamten Bauteiles auf die beschriebene Art herzustellen und diese dann durch andere bereits fertige Teile zu ergänzen, wobei die Verbindung zwischen beiden fertigungstechnisch durchaus unproblematisch gestaltet werden kann. Beim angesprochenen Fall eines Röhrenwärmetauschers würden nur die Rohrböden mit den in sie eingelassenen Rohrstutzen auf die beschriebene Art fertiggestellt und anschließend letztere durch einfach herzustellende Stumpflötungen mit als Meterware verfügbaren Rohren zum gesamten Objekt verbunden werden. Since the size of the furnace systems or silicon baths in which the composite parts are subjected to the impregnation, is necessarily limited and may not is sufficient to z. B. an entire heat exchanger in the embodiment of the invention in the second Claim suggested only the more complicated shaped Areas of the entire component in the manner described to manufacture and then by other already finished parts to complete, the connection between the two production engineering can be designed without any problems can. In the case of a tubular heat exchanger would only be the tube sheets with those embedded in them Pipe socket completed in the manner described and then the latter through easy to manufacture Butt soldering with tubes available by the meter for entire object.
Der 3. Anspruch bezeichnet einen bevorzugten Anwendungsfall der Erfindung.The third claim denotes a preferred application of the Invention.
Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt, und zwar zeigt diese perspektivisch den unteren Teil eines Röhrenwärmetauschers bei abgenommener Außenhülle.An embodiment of the invention is in the drawing shown, and this shows the lower perspective Part of a tube heat exchanger with the outer shell removed.
In einen mit entsprechenden Öffnungen versehenen Rohrboden 1 aus "grünem" Siliziumkarbid werden kurze Rohrenden 2 aus dem gleichen Werkstoff gesteckt. Da die Teile 1, 2 nicht paßgenau herstellbar sind, verbleiben zwischen ihnen Spalte 3, die mit einer Schlämme aus Siliziumkarbid aufgefüllt werden. Anschließend wird das zusammengesetzte Bauteil 1, 2 in bekannter Weise mit Silizium infiltriert und sodann gebrannt. Nunmehr werden an den Rohrenden 2 weitere Rohre 4 aus fertigem SiSiC in der erforderlichen Länge befestigt, vorzugsweise durch eine stumpfe Lötnaht 5. Die Länge dieser Rohre 4 und damit reziprok korrespondierend die der Rohrenden 2 richtet sich nach den gegebenen Herstellungsmöglichkeiten in Verbindung mit den durch die Größe des Wärmetauschers vorgegebenen Abmessungen.Short tube ends 2 made of the same material are inserted into a tube plate 1 made of "green" silicon carbide and provided with corresponding openings. Since parts 1 , 2 cannot be manufactured to fit precisely, gaps 3 remain between them, which are filled with a slurry of silicon carbide. Subsequently, the assembled component 1 , 2 is infiltrated with silicon in a known manner and then fired. Now 2 more pipes 4 are fixed from SiSiC finished to the required length at the pipe ends, preferably by a blunt soldered seam. 5 The length of these tubes 4 and thus reciprocally corresponding to that of the tube ends 2 depends on the given manufacturing possibilities in connection with the dimensions given by the size of the heat exchanger.
Claims (3)
- a) Das Bauteil wird aus einfach geformten "grünen" Einzelteilen (1, 2) aus Siliziumkarbid zusammengesetzt.
- b) Zwischen den Einzelteilen (1, 2) ggf. verbleibende Hohlräume, Spalte usw. (3) werden mit einer Schlämme aus Siliziumkarbid aufgefüllt.
- c) Das Bauteil (1-3) wird in an sich bekannter Weise mit Silizium getränkt und anschließend gebrannt.
- a) The component is composed of simply shaped "green" individual parts ( 1 , 2 ) made of silicon carbide.
- b) Any cavities, gaps, etc. (3) that may remain between the individual parts ( 1 , 2 ) are filled with a slurry of silicon carbide.
- c) The component ( 1-3 ) is impregnated with silicon in a manner known per se and then fired.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19883831812 DE3831812A1 (en) | 1988-09-19 | 1988-09-19 | Process for producing complicated components of silicon-infiltrated silicon carbide |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19883831812 DE3831812A1 (en) | 1988-09-19 | 1988-09-19 | Process for producing complicated components of silicon-infiltrated silicon carbide |
Publications (1)
Publication Number | Publication Date |
---|---|
DE3831812A1 true DE3831812A1 (en) | 1990-03-22 |
Family
ID=6363262
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19883831812 Withdrawn DE3831812A1 (en) | 1988-09-19 | 1988-09-19 | Process for producing complicated components of silicon-infiltrated silicon carbide |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE3831812A1 (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0479657A1 (en) * | 1990-10-04 | 1992-04-08 | Ceramiques Et Composites | Method and joining articles made of silicon carbide and assemblies thus obtained |
DE4116865A1 (en) * | 1991-05-23 | 1992-11-26 | Schunk Kohlenstofftechnik Gmbh | Porous composite bodies prodn. - by coating ceramic particles with silicon carbide and joining together with silicon solder |
DE4440842A1 (en) * | 1993-11-17 | 1995-05-18 | Ngk Insulators Ltd | Composite ceramic component, e.g. tube-and-plate heat exchanger prodn. |
WO1999004213A1 (en) * | 1997-07-16 | 1999-01-28 | Deutsches Zentrum für Luft- und Raumfahrt e.V. | Heat exchanger |
EP1217322A2 (en) * | 2000-12-21 | 2002-06-26 | Fujikoshi Machinery Corporation | Heat Exchanger |
WO2005038376A1 (en) * | 2003-10-17 | 2005-04-28 | Behr Gmbh & Co. Kg | Heat exchanger, in particular for motor vehicles |
DE102018117738A1 (en) | 2018-07-23 | 2020-01-23 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Reactive ceramic components and processes for their manufacture |
-
1988
- 1988-09-19 DE DE19883831812 patent/DE3831812A1/en not_active Withdrawn
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0479657A1 (en) * | 1990-10-04 | 1992-04-08 | Ceramiques Et Composites | Method and joining articles made of silicon carbide and assemblies thus obtained |
FR2667591A1 (en) * | 1990-10-04 | 1992-04-10 | Ceramiques Composites | METHOD FOR ASSEMBLING SILICON CARBIDE OBJECTS AND ASSEMBLIES THUS OBTAINED |
DE4116865A1 (en) * | 1991-05-23 | 1992-11-26 | Schunk Kohlenstofftechnik Gmbh | Porous composite bodies prodn. - by coating ceramic particles with silicon carbide and joining together with silicon solder |
DE4440842A1 (en) * | 1993-11-17 | 1995-05-18 | Ngk Insulators Ltd | Composite ceramic component, e.g. tube-and-plate heat exchanger prodn. |
WO1999004213A1 (en) * | 1997-07-16 | 1999-01-28 | Deutsches Zentrum für Luft- und Raumfahrt e.V. | Heat exchanger |
EP1217322A2 (en) * | 2000-12-21 | 2002-06-26 | Fujikoshi Machinery Corporation | Heat Exchanger |
EP1217322A3 (en) * | 2000-12-21 | 2005-01-19 | Fujikoshi Machinery Corporation | Heat Exchanger |
US7163053B2 (en) | 2000-12-21 | 2007-01-16 | Fujikoshi Machinery Corp. | Heat exchanger |
WO2005038376A1 (en) * | 2003-10-17 | 2005-04-28 | Behr Gmbh & Co. Kg | Heat exchanger, in particular for motor vehicles |
DE102018117738A1 (en) | 2018-07-23 | 2020-01-23 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Reactive ceramic components and processes for their manufacture |
EP3599229A1 (en) | 2018-07-23 | 2020-01-29 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Reaction joined ceramic components and method for the production thereof |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8127 | New person/name/address of the applicant |
Owner name: SIEMENS AG, 8000 MUENCHEN, DE DIDIER-WERKE AG, 620 |
|
8127 | New person/name/address of the applicant |
Owner name: SIEMENS AG, 8000 MUENCHEN, DE |
|
8139 | Disposal/non-payment of the annual fee |