DE1147523B - Process for joining and joining together refractory components - Google Patents

Process for joining and joining together refractory components

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Publication number
DE1147523B
DE1147523B DEP23910A DEP0023910A DE1147523B DE 1147523 B DE1147523 B DE 1147523B DE P23910 A DEP23910 A DE P23910A DE P0023910 A DEP0023910 A DE P0023910A DE 1147523 B DE1147523 B DE 1147523B
Authority
DE
Germany
Prior art keywords
joining
paste
binder
carbon
mortar
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.)
Pending
Application number
DEP23910A
Other languages
German (de)
Inventor
Jacques Clair
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.)
Pechiney SA
Original Assignee
Pechiney SA
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 Pechiney SA filed Critical Pechiney SA
Publication of DE1147523B publication Critical patent/DE1147523B/en
Pending legal-status Critical Current

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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
    • 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
    • C04B35/56—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 carbides or oxycarbides
    • C04B35/5607—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 carbides or oxycarbides based on refractory metal carbides
    • 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
    • C04B35/56—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 carbides or oxycarbides
    • C04B35/5607—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 carbides or oxycarbides based on refractory metal carbides
    • C04B35/5611—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 carbides or oxycarbides based on refractory metal carbides based on titanium carbides
    • 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
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/64—Burning or sintering processes
    • C04B35/65—Reaction sintering of free metal- or free silicon-containing compositions
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Adhesives Or Adhesive Processes (AREA)

Description

Verfahren zum Verbinden und Zusammenfügen von feuerfesten Bauteilen Für manche Zwecke wendet man besonders feuerfeste Materialien an, um Öfen für sehr hohe Temperaturen in der Größenordnung von 2000° C, die gegebenenfalls unter Vakuum arbeiten, herzustellen. Die feuerfesten Materialien müssen unter diesen Bedingungen außerdem eine erhöhte Widerstandsfähigkeit gegen chemische Angriffe aufweisen. Die Kohlenstoff-, Stickstoff- und Borverbindungen von hochschmelzenden Metallen, wie Zinn, Molybdän, Tantal, Titan, Zirkon, können oft als Auskleidung für diese Öfen angewandt werden.Process for connecting and assembling refractory components For some purposes one uses particularly refractory materials to make ovens for very high temperatures of the order of 2000 ° C, possibly under vacuum work to manufacture. The refractories must be made under these conditions also have an increased resistance to chemical attack. the Carbon, nitrogen and boron compounds of refractory metals such as Tin, molybdenum, tantalum, titanium, zircon, can often be used as the lining for these furnaces can be applied.

Aber diese feuerfesten Werkstücke müssen miteinander so verbunden sein, daß mit ihnen größere Ofenteile und feste und dichte Wände, Bögen und Gewölbe hergestellt werden können.But these refractory workpieces must be connected to each other in such a way be that with them larger furnace parts and solid and tight walls, arches and vaults can be produced.

Die Erfindung hat ein Verfahren zum Verbinden und Zusammenfügen feuerfester Bauteile zum Gegenstand. Sie umfaßt ferner als neues technisches Produkt die besondere Paste, die für diesen Zweck angewandt werden soll.The invention has a method of joining and assembling refractories Components to the subject. It also includes the special as a new technical product Paste to be used for this purpose.

Um die feuerfesten Bauteile aus Kohlenstoff-, Stickstoff- und Borverbindungen hochschmelzender Metalle miteinander zu verbinden, verwendet man erfindungsgemäß eine Paste, die als wesentlichen Bestandteil ein Pulver enthält, welches aus einer Mischung von im wesentlichen stöchiometrischen Anteilen eines oder mehrerer Metalle, wie Titan, Zirkon, Wolfram, Molybdän, Tantal usw., und Metalloiden, wie Kohlenstoff und/oder Bor, oder auch aus Verbindungen eines oder mehrerer Metalle mit einem oder mehreren Metalloiden besteht.About the refractory components made of carbon, nitrogen and boron compounds To connect refractory metals to one another, is used according to the invention a paste that contains a powder as an essential component, which consists of a Mixture of essentially stoichiometric proportions of one or more metals, such as titanium, zirconium, tungsten, molybdenum, tantalum, etc., and metalloids such as carbon and / or boron, or from compounds of one or more metals with one or consists of several metalloids.

Der zweite Bestandteil der betreffenden Paste ist ein plastisches, bei gewöhnlicher Temperatur flüssiges Bindemittel, von dem man eine genügende Menge anwendet, um der Masse die Plastizität zu verleihen, die bei Zementmörtel für Mauerwerk üblich ist.The second component of the paste in question is a plastic, A binder that is liquid at ordinary temperature and of which a sufficient quantity can be obtained used to give the mass the plasticity that cement mortar for masonry is common.

Gemäß einer bevorzugten Ausführungsform der Erfindung benutzt man ein Harz auf der Basis von Polyester mit bei gewöhnlicher Temperatur niedriger Viskosität, das eine genügende Menge Katalysator enthält, um das schnelle Abbinden der Paste in der Kälte, vorzugsweise etwa innerhalb einer Stunde, zu gewährleisten.According to a preferred embodiment of the invention, one uses a resin based on polyester with low viscosity at ordinary temperature, that contains a sufficient amount of catalyst to allow the paste to set quickly in the cold, preferably within an hour.

Die Blöcke, die, wenn notwendig, vorher maschinell bearbeitet worden sind, werden mit dieser Paste auf den Flächen bestrichen, die miteinander in Berührung gebracht werden sollen, und werden dann in der gleichen Weise wie bei üblichem feuerfestem Mauerwerk aufgesetzt.The blocks that, if necessary, have been machined beforehand are coated with this paste on the surfaces that are in contact with each other should be brought, and are then in the same way as with ordinary refractory Put on masonry.

Es ist nicht notwendig, daß der Hauptbestandteil des Pulvers für die Paste derselbe Stoff ist wie derjenige, aus dem die zu verbindenden Blöcke hergestellt sind.It is not necessary that the main component of the powder for the Paste is the same fabric as the one from which the blocks to be joined are made are.

Das Beispiel dient zur näheren Erläuterung der Erfindung.The example serves to explain the invention in more detail.

Beispiel Zwecks Aufbau einer feuerfesten Auskleidung aus Molybdäncarbidsteinen stellt man einen flüssigen Mörtel her, indem man in der Kälte folgende Bestandteile mischt: Molybdän (200-Maschen-Sieb) .... 2000 g Petrolkoks (200-Maschen-Sieb) .. . 125 g Polyesterharz . . . . . . . . . . . . . . . . . . . 1000 g Katalysator (Methyläthylketon- hydroperoxyd) ................ 50 g Der Harzbinder auf Polyesterbasis setzt sich wie folgt zusammen: Der in dem Binder anwesende Polyester war aus folgenden Ausgangsmaterialien hergestellt worden: Maleinsäureanhydrid . . . . . . . . . . 0,38 Mol Phthalsäureanhydrid . . . . . . . . . . . 0,62 Mol Propylenglykol . . . . . . . . . . . . . . . . .1 Mol Mit dem wie oben angegeben zusammengesetzten Mörtel bestreicht man die Formstücke, bevor- sie eingesetzt werden, mit einer Maurerkelle an den zusammenzufügenden Flächen. Das Abbinden des Mörtels dauert etwa 1 Stunde.Example For the purpose of building a refractory lining from molybdenum carbide bricks, a liquid mortar is produced by mixing the following ingredients in the cold: Molybdenum (200 mesh sieve) .... 2000 g Petroleum coke (200-mesh sieve) ... 125 g Polyester resin. . . . . . . . . . . . . . . . . . . 1000 g Catalyst (methyl ethyl ketone hydroperoxide) ................ 50 g The polyester-based resin binder is composed as follows: The polyester present in the binder was made from the following starting materials: maleic anhydride. . . . . . . . . . 0.38 moles of phthalic anhydride. . . . . . . . . . . 0.62 moles of propylene glycol. . . . . . . . . . . . . . . . .1 mol With the mortar composed as indicated above, the shaped pieces are coated with a mason's trowel on the surfaces to be joined before they are inserted. It takes about 1 hour for the mortar to set.

Man läßt die Temperatur langsam (z. B. um je 50° C pro Stunde) auf 500° C ansteigen wobei der Kunstharzbinder mehr und mehr verschwindet, steigert sie dann schnell auf 1900° C und hält diese Temperatur 6 Stunden lang aufrecht.The temperature is allowed to rise slowly (for example by 50 ° C. per hour) Rise 500 ° C with the synthetic resin binder disappearing more and more, increasing then quickly to 1900 ° C and maintain this temperature for 6 hours.

Die erfindungsgemäß erzeugten Verbindungen sind, abgesehen von ihrer Hitzebeständigkeit, besonders widerstandsfähig gegen Bruch und absolut dicht.The compounds produced according to the invention are, apart from theirs Heat resistance, particularly resistant to breakage and absolutely tight.

Der als Beispiel gewählte Mörtel auf der Basis von Molybdän und Koks läßt sich nicht nur für Blöcke oder Formstücke aus Molybdäncarbid anwenden, sondern auch für Bauteile aus z. B. Titancarbid, Titanborid u. dgl.The mortar chosen as an example, based on molybdenum and coke can be used not only for blocks or fittings made of molybdenum carbide, but also for components from z. B. titanium carbide, titanium boride and the like.

Als plastisches Bindemittel für den Mörtel kann erfindungsgemäß jedes plastische Material dienen, das im wesentlichen die gleiche Viskosität bei 25° C hat wie das im Beispiel angegebene Kunstharz.According to the invention, any plastic binder for the mortar can be used Plastic material are used that have essentially the same viscosity at 25 ° C has synthetic resin like the one given in the example.

Als Katalysatoren können beispielsweise Produkte dienen, die im wesentlichen aus Kobaltsalzen und Hydroperoxyden, z. B. Cyclollexanhydroperoxyd usw., bestehen; geeignet sind auch Produkte aus Aminen und Diaryl- oder Diacylperoxyden, z. B. Benzoylperoxyd, Laurylperoxyd, Dimethylanilin usw.As catalysts, for example, products can be used which essentially from cobalt salts and hydroperoxides, e.g. B. Cyclollexanhydroperoxyd, etc. exist; Products made from amines and diaryl or diacyl peroxides are also suitable, e.g. B. benzoyl peroxide, Lauryl peroxide, dimethylaniline, etc.

Claims (2)

PATENTANSPRÜCHE: 1. Verfahren zum Verbinden und Zusammenfügen von feuerfesten Bauteilen aus Kohlenstoff-, Stickstoff- und Borverbindungen von hochschmelzenden Metallen, gegebenenfalls unter Verwendung der Bestandteile von Stoffen der gleichen Art, wobei man die in Verbindung zu bringenden Oberflächen mit einer Paste mit einem Gehalt an einem Bindemittel, welches in genügender Menge vorhanden ist, um der Paste die Plastizität des für Mauerwerk üblichen Zementmörtels zu verleihen, bestreicht und nach Zusammenfügen derselben das Ganze erhitzt, dadurch gekennzeichnet, daß man als Paste eine Mischung von im wesentlichen stöchiometrischen Anteilen mindestens eines Metalls, wie Titan, Zirkon, Wolfram, Molybdän, Tantal, in Pulverform und mindestens eines ebenfalls pulverförmigen Metalloids, wie Kohlenstoff und Bor, mit einem bei gewöhnlicher Temperatur flüssigen Kunststoff als Bindemittel verwendet und daß man das Erhitzen bis etwa zur Sintertemperatur der Metall-Metalloid-Verbindungen durchführt. PATENT CLAIMS: 1. Method of joining and joining Refractory components made from carbon, nitrogen and boron compounds of high-melting points Metals, optionally using the constituents of substances of the same Art, whereby the surfaces to be connected with a paste with a Content of a binder which is present in sufficient quantity to make the paste to give the plasticity of the cement mortar customary for masonry, coated and after joining them together, the whole is heated, characterized in that the paste is a mixture of at least essentially stoichiometric proportions of a metal such as titanium, zirconium, tungsten, molybdenum, tantalum, in powder form and at least a powdery metalloid, such as carbon and boron, with one at Ordinary temperature liquid plastic used as a binder and that one carries out the heating up to about the sintering temperature of the metal-metalloid compounds. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß man als plastisches Bindemittel ein Polyesterharz anwendet, das bei gewöhnlicher Temperatur eine niedrige Viskosität aufweist und eine genügende Menge an Katalysator enthält, um das Kaltabbinden der als Mörtel dienenden Paste in kurzer Zeit, vorzugsweise innerhalb einer Stunde, zu gewährleisten. In Betracht gezogene Druckschriften: Deutsche Patentschriften Nr. 639 258, 710 865, 863 999, 947 056.2. The method according to claim 1, characterized in that the plastic binder adopts a polyester resin which has a low viscosity at ordinary temperature and contains a sufficient amount of catalyst to cold-set the paste used as a mortar in a short time, preferably within an hour, to ensure. Publications considered: German Patent Specifications No. 639 258, 710 865, 863 999, 947 056.
DEP23910A 1958-11-20 1959-11-19 Process for joining and joining together refractory components Pending DE1147523B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1147523X 1958-11-20

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DE1147523B true DE1147523B (en) 1963-04-18

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3149266A1 (en) * 1981-12-12 1983-06-23 Kernforschungszentrum Karlsruhe Gmbh, 7500 Karlsruhe Process for the production of mouldings, and use of the mouldings

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE639258C (en) * 1935-01-01 1938-07-13 Heraeus Gmbh W C Process for welding pipes and other fittings made of quartz and other difficult-to-melt materials
DE710865C (en) * 1937-09-01 1941-09-23 Schumachersche Fabrik Process for the production of ceramic filter candles
DE863999C (en) * 1951-07-12 1954-02-08 Vaw Ver Aluminium Werke Ag Process for connecting the carbon blocks of continuous electrodes for electric furnaces, in particular for fused metal electrolysis
DE947056C (en) * 1938-04-15 1956-08-09 Carborundum Co Silicon carbide object

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE639258C (en) * 1935-01-01 1938-07-13 Heraeus Gmbh W C Process for welding pipes and other fittings made of quartz and other difficult-to-melt materials
DE710865C (en) * 1937-09-01 1941-09-23 Schumachersche Fabrik Process for the production of ceramic filter candles
DE947056C (en) * 1938-04-15 1956-08-09 Carborundum Co Silicon carbide object
DE863999C (en) * 1951-07-12 1954-02-08 Vaw Ver Aluminium Werke Ag Process for connecting the carbon blocks of continuous electrodes for electric furnaces, in particular for fused metal electrolysis

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3149266A1 (en) * 1981-12-12 1983-06-23 Kernforschungszentrum Karlsruhe Gmbh, 7500 Karlsruhe Process for the production of mouldings, and use of the mouldings

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