DE694038C - Process for the production of ceramic molded bodies - Google Patents

Process for the production of ceramic molded bodies

Info

Publication number
DE694038C
DE694038C DE1937P0075030 DEP0075030D DE694038C DE 694038 C DE694038 C DE 694038C DE 1937P0075030 DE1937P0075030 DE 1937P0075030 DE P0075030 D DEP0075030 D DE P0075030D DE 694038 C DE694038 C DE 694038C
Authority
DE
Germany
Prior art keywords
aluminum
production
binder
molded bodies
ceramic molded
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
DE1937P0075030
Other languages
German (de)
Inventor
Dr Wolfgang Rohde
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.)
Julius Pintsch AG
Original Assignee
Julius Pintsch AG
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 Julius Pintsch AG filed Critical Julius Pintsch AG
Priority to DE1937P0075030 priority Critical patent/DE694038C/en
Application granted granted Critical
Publication of DE694038C publication Critical patent/DE694038C/en
Expired legal-status Critical Current

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
    • C04B33/00—Clay-wares
    • C04B33/02—Preparing or treating the raw materials individually or as batches
    • C04B33/13—Compounding ingredients
    • C04B33/1315—Non-ceramic binders
    • 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
    • C04B33/00—Clay-wares
    • C04B33/02—Preparing or treating the raw materials individually or as batches
    • C04B33/13—Compounding ingredients

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Dispersion Chemistry (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Compositions Of Oxide Ceramics (AREA)

Description

Verfahren zur Herstellung von keramischen Formkörpern Zusatz zum Patent 670 23@ Das Hauptpatent bezieht sich auf ein Verfahren zur Herstellung von keramischen Formkörpern und Überzügen o. dgl. aus den Oxyden des Aluminiums, Chroms, Berylliums, Magnesiums oder Gemischen derselben, bei dem diese Oxyde mit einem Bindemittel in den bildsamen oder pasteartigen Zustand übergeführt und nach der Formgebung getrocknet und gebrannt werden. Nach der Erfindung des Hauptpatents soll dabei als Bindemittel eine Aluminiumformiatlösung benutzt werden. Die auf diese Weise hergestellten keramischen Formkörper und Überzüge lassen sich mit besonderem Vorteil für den Aufbau von Entladungsrühren verwenden.Process for the production of ceramic moldings Addition to the patent 670 23 @ The main patent relates to a process for the production of ceramic Moldings and coatings or the like from the oxides of aluminum, chromium, beryllium, Magnesium or mixtures thereof, in which these oxides with a binder in transferred to the malleable or pasty state and dried after shaping and be burned. According to the invention of the main patent, it should act as a binder an aluminum formate solution can be used. The ceramic produced in this way Moldings and coatings can be used with particular advantage for the construction of discharge stirrers use.

Gemäß der vorliegenden Erfindung wird nun als Bindemittel bei der Herstellung von keramischen Fonmkörpern und überzügen o.dgl. aus den obengenannten Oxyden an Stelle vom Aluminiumformiat eine andere wasserlösliche, niedermolekulare, organische Aluminiumverbindung verwendet.According to the present invention is now used as a binder in the Manufacture of ceramic moldings and coatings or the like. from the above Oxides instead of aluminum formate another water-soluble, low-molecular, organic aluminum compound is used.

An sich ist es bekannt, bei der Trockenpressung von Porzellan- und Aluminiumoxydmassen als Bindemittel wasserunlösliche, hochmolekulare, organische AluminiLun.salze zu verwenden. Hierbei wird die Eigenschaft dieser Salze, bei Anwendung vom Druck die Kohäsionskraft der Teilchen der Massen zu vergrößern, ausgenutzt. Beim Erfindungsgegenstand handelt es sich demgegenüber um eine Naßformung ohne Anwendung von Druck, und es wird als Bindemittel eine in Wasser gelöste, niedermolekulare, organische Aluminiumverbindung benutzt. Derartige niedermolekulare Verbindungen haben gegenüber den hochmolekularen den Vorteil, beim Brennen des Formkörpers weniger Kohlenstoff bzw. Kohlendioxyd freizusetzen. Außerdem erfolgt ihr Abbau beim Erhitzen in den meisten Fällen stufenweise, so daß schon unmittelbar nach Beginn der gelinden Erhitzung eine außerordentlich feste Bindung erreicht wird.It is known per se, in the dry pressing of porcelain and Aluminum oxide masses as binders, water-insoluble, high molecular weight, organic Use aluminum salts. Here the property this Salts, when pressure is applied to increase the cohesive force of the particles of the masses, exploited. In contrast, the subject matter of the invention is wet molding without the application of pressure, and the binder used is a low molecular weight, organic aluminum compound used. Such low molecular weight compounds have the advantage over the high molecular weight of less when the molded body is fired To release carbon or carbon dioxide. In addition, they break down when heated in most cases gradually, so that immediately after the beginning of the mild Heating an extremely strong bond is achieved.

Vorzugsweise werden als Bindemittel die Aluminiumsalze der aliphatischen Säuren, welche praktisch alle eine sehr hohe Löslichkeit besitzen, verwendet. Diese Salze haben den Vorteil, daß bei ihnen wegen der geringen Azidität kaum Hydrolyse auftritt. Als sehr vorteilhaft haben sich das Aluminiumbioxalat, das Tartrat und ferner auch das Lactat und das Azetötartrat erwiesen. Auch die Alkoholate des Aluminiums kommen in Frage.The aluminum salts of the aliphatic are preferably used as binders Acids, which practically all have a very high solubility, are used. These Salts have the advantage that they hardly undergo hydrolysis because of their low acidity occurs. The aluminum oxalate, the tartrate and also the lactate and the acetotartrate proved. Also the alcoholates of aluminum come into question.

Die Herstellung des Formkörpers nach der Erfindung geschieht im einzelnen in der bereits im Hauptpatent angegeben Weise.The molding according to the invention is produced in detail in the manner already indicated in the main patent.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung von keramischen Formkörpern und Überzügen o. dgl., insbesondere für den Aufbau von Entladungsröhren aus an sich unbildsamen, isolierenden Metalloxyden (Aluminium-, Chrom-, Beryllium- oder Magnesiumoxyd); die mit einem Bindemittel, wie einer Aluminiumformiatlösung, in den bildsamen oder pasteartigen Zustand übergeführt und nach der Formgebung getrocknet und gebrannt (gesintert) werden, nach Patent 67o231, dadurch gekennzeichnet, daß als Bindemittel an Stelle des Aluminiumformiats .eine andere, wasserlösliche, niedermolekulare, organische Aluminiumverbindung verwendet wird.PATENT CLAIM: Process for the production of ceramic moldings and coatings or the like, in particular for the construction of discharge tubes per se non-sculptural, insulating metal oxides (aluminum, chromium, beryllium or magnesium oxide); those with a binder, such as an aluminum formate solution, in the plastic or pasty state and dried and fired after shaping (sintered) are, according to patent 67o231, characterized in that as a binder instead of the aluminum format, another, water-soluble, low-molecular, organic aluminum compound is used.
DE1937P0075030 1937-04-06 1937-04-06 Process for the production of ceramic molded bodies Expired DE694038C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE1937P0075030 DE694038C (en) 1937-04-06 1937-04-06 Process for the production of ceramic molded bodies

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1937P0075030 DE694038C (en) 1937-04-06 1937-04-06 Process for the production of ceramic molded bodies

Publications (1)

Publication Number Publication Date
DE694038C true DE694038C (en) 1940-07-24

Family

ID=7392668

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1937P0075030 Expired DE694038C (en) 1937-04-06 1937-04-06 Process for the production of ceramic molded bodies

Country Status (1)

Country Link
DE (1) DE694038C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE977500C (en) * 1953-06-27 1966-09-15 Carborundum Werke G M B H Deut Process for the production of ceramic bonds for grinding wheels and grinding tools

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE977500C (en) * 1953-06-27 1966-09-15 Carborundum Werke G M B H Deut Process for the production of ceramic bonds for grinding wheels and grinding tools

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