DE852365C - Process for producing ceramic bodies - Google Patents

Process for producing ceramic bodies

Info

Publication number
DE852365C
DE852365C DES2327A DES0002327A DE852365C DE 852365 C DE852365 C DE 852365C DE S2327 A DES2327 A DE S2327A DE S0002327 A DES0002327 A DE S0002327A DE 852365 C DE852365 C DE 852365C
Authority
DE
Germany
Prior art keywords
casting
bodies
ceramic bodies
producing ceramic
partly
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
DES2327A
Other languages
German (de)
Inventor
Alexander Von Dr Phil Mickwitz
Et Alexander Von Dr P Mickwitz
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.)
Siemens AG
Original Assignee
Siemens 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 Siemens AG filed Critical Siemens AG
Priority to DES2327A priority Critical patent/DE852365C/en
Application granted granted Critical
Publication of DE852365C publication Critical patent/DE852365C/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
    • C04B33/28—Slip casting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B1/00—Producing shaped prefabricated articles from the material
    • B28B1/26—Producing shaped prefabricated articles from the material by slip-casting, i.e. by casting a suspension or dispersion of the material in a liquid-absorbent or porous mould, the liquid being allowed to soak into or pass through the walls of the mould; Moulds therefor ; specially for manufacturing articles starting from a ceramic slip; Moulds therefor
    • 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
    • C04B33/30—Drying methods
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
    • H01B3/02—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of inorganic substances
    • H01B3/12—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of inorganic substances ceramics

Landscapes

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

Description

Verfahren zum Herstellen keramischer Körper Es ist bekannt, Körper aus keramischen Werkstoffen oder unplastischen Massen, z. B. Metalloxyden oder Titanaten, durch Gießen in ansaugenden Formen, z. B. in Gipsformen, herzustellen und diese Gießrohlinge zu sintern. Das Gießverfahren hat den Vorteil, daß die Teilchen beim Ansaugen und Sedimentieren in derGießform sichdichter ablagern als beim Pressen. Dieser Vorgang wird jedoch durch das im Scherben zurückbleibende Wasser zum Teil wieder aufgehoben, da beim Trocknen das Wasser verdunstet und an dessen Stelle in den Rohscherben Luft eintritt, wodurch eine Porosität bedingt wird. Erst durch eine bedeutende Arbeitsleistung der im Brande zusammenrückenden Teilchen, kann diese Porosität wieder aufgehoben werden. Dies ist jedoch in vielen Fällen nicht durchführbar, wenn beispielsweise die Masse ein enges Brenninterval aufweist oder beim Brand eine unerwünscht hohe Kristallisationsgeschwindigkeit einsetzt, welche die Brenndauer zu verkürzen und die Brenntemperatur auf ein Minimum herabzusetzen zwingt. Dies ist besonders bei den Titanaten der Fall.Method for producing ceramic bodies It is known bodies made of ceramic materials or non-plastic materials, e.g. B. metal oxides or titanates, by pouring in suction forms, e.g. B. in plaster molds, and these To sinter casting blanks. The casting process has the advantage that the particles when Suction and sedimentation in the casting mold are deposited more densely than when pressing. However, this process is partly due to the water remaining in the cullet lifted again, as the water evaporates during drying and replaces it in air enters the raw shards, which causes porosity. Only through one significant work done by the particles moving together in the fire can do this Porosity can be canceled again. However, in many cases this is not feasible, if, for example, the mass has a narrow burning interval or, in the event of a fire, a undesirably high crystallization rate sets in, which reduces the firing time to shorten and reduce the firing temperature to a minimum. this is particularly the case with the titanates.

Gemäß der Erfindung werden die Nachteile des Gießens dadurch vermieden, daß die Körper nach dem Gießen einem Preßvorgang unterworfen werden. Durch das dem Gießen nachfolgende Pressen wird die Packungsdichte erhöht und ein Scherben mit höherem Raumgewicht erzielt. So konnte beispielsweise bei Körpern aus Bariumtitanat, deren Gießschlicker vollständig aus Schrühscherben hergestellt war, das Raumgewicht durch das nachträgliche Pressen von 5,41 auf 5,5o heraufgesetzt werden. Besonders vorteilhaft hat es sich hierbei erwiesen, den Gießschlicker nicht vollständig aus Schrüh- Scherben, sondern zum Teil, z. B. 2o O%, aus Rohmasse herzustellen. Hierdurch war es möglich, das Raumgewicht bis auf 5,63 zu erhöhen.According to the invention, the disadvantages of casting are avoided by that the bodies are subjected to a pressing process after casting. Through the dem Pouring subsequent pressing increases the packing density and incorporates a cullet higher density achieved. For example, in the case of bodies made of barium titanate, whose casting slip was made entirely from scrap fragments, the volume weight can be increased from 5.41 to 5.5o by the subsequent pressing. Particularly It has proven advantageous here not to completely exhaust the casting slip Inclined Shards, but in part, z. B. 2o O% to produce from raw mass. This made it possible to increase the volume weight up to 5.63.

Das erfindungsgemäße Verfahren eignet sich besonders für die Herstellung von Kondensatordielektrika und Gegenstände für Hochfrequenzzwecke. Es ist auf alle keramischen Massen anwendbar, wenn die Formgebung der gegossenen Körper ein Nachpressen zuläßt.The method according to the invention is particularly suitable for production of capacitor dielectrics and articles for high frequency purposes. It's on everyone Ceramic masses applicable when the shaping of the cast body requires repressing allows.

Claims (2)

PATENTANSPRÜCHE: r. Verfahren zur Herstellung von Körpern aus keramischen Werkstoffen, unplastischen Massen, z. B. Metalloxyden oder Titanäten, insbesondere Bariumtitanat, dadurch gekennzeichnet, daß die Körper nach dem Gießen einem Preßvorgang unterworfen werden. PATENT CLAIMS: r. Process for the production of bodies from ceramic materials, non-plastic masses, e.g. B. metal oxides or titanates, especially barium titanate, characterized in that the bodies are subjected to a pressing process after casting. 2. Verfahren nach Anspruch r, dadurch gekennzeichnet, daß der Gießschlicker zum Teil aus Schrühscherben und zum Teil aus Rohmasse aufbereitet wird. Angezogene Druckschriften: A. G r a n ge r : »La Ceramique industrielle«, Verlag Gauthier-Villars, Paris 1929, S. 426 und 492.2. The method according to claim r, characterized in that that the casting slip is prepared partly from scrap fragments and partly from raw material will. Printed publications: A. G r a n ge r: »La Ceramiqueindustrie«, Verlag Gauthier-Villars, Paris 1929, pp. 426 and 492.
DES2327A 1950-03-21 1950-03-21 Process for producing ceramic bodies Expired DE852365C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DES2327A DE852365C (en) 1950-03-21 1950-03-21 Process for producing ceramic bodies

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES2327A DE852365C (en) 1950-03-21 1950-03-21 Process for producing ceramic bodies

Publications (1)

Publication Number Publication Date
DE852365C true DE852365C (en) 1952-10-13

Family

ID=7469565

Family Applications (1)

Application Number Title Priority Date Filing Date
DES2327A Expired DE852365C (en) 1950-03-21 1950-03-21 Process for producing ceramic bodies

Country Status (1)

Country Link
DE (1) DE852365C (en)

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Similar Documents

Publication Publication Date Title
DE1483641C3 (en) Water-soluble salt cores
DE852365C (en) Process for producing ceramic bodies
DE944725C (en) Process for the production of sintered filter bodies
DE3742862A1 (en) FIRE-RESISTANT MATERIAL AND METHOD FOR THE PRODUCTION THEREOF
EP0151307B1 (en) Process for making high-density and high-temperature resistant ceramic bodies
DE708900C (en) Process for the production of thin tubes or plates from ceramic mass for technical purposes
DE2206980C1 (en) Process for the production of porous, tubular parts
EP0462473B1 (en) Moulded ceramic products with hollow cavities
DE680648C (en) Process for the production of ceramic products, in particular spark plug stones
DE441944C (en) Process for the production of ceramic bodies
DE881628C (en) Process for the production of highly porous lightweight clay bricks and fire-resistant molded bodies
DE397898C (en) Process for the production of cement
DE703145C (en) Method and device for the production of fused pores, in particular fused glass pods
DE617479C (en) Process for the manufacture of refractory bricks from fatty clay and finely ground lean agents
DE676595C (en) Process for the production of molds, in particular for the production of porcelain objects, e.g. B. fillings, mantle crowns u. like
DE922460C (en) Shaped bodies made of carbon and ceramic materials and process for their production
DE1646571C3 (en) Process for the production of foam ceramic materials
DE456975C (en) Process for the production of split tiles from ceramic masses
DE392007C (en) Process for the production of porcelain-like masses from basalt or the like.
AT293252B (en) Process for the production of ceramic molded parts
AT128643B (en) Process for the production of clay-bound products.
DE866326C (en) Process for the manufacture of products from sintered clay
DE2141029C3 (en) Process for the manufacture of refractory materials
DE1771768C2 (en) Process for the production of basic, highly refractory molded articles
AT211723B (en) Process for the production of fired refractory composite bricks