DE415091C - Process for the production of ceramic goods by means of the casting process under pressure - Google Patents

Process for the production of ceramic goods by means of the casting process under pressure

Info

Publication number
DE415091C
DE415091C DED39685D DED0039685D DE415091C DE 415091 C DE415091 C DE 415091C DE D39685 D DED39685 D DE D39685D DE D0039685 D DED0039685 D DE D0039685D DE 415091 C DE415091 C DE 415091C
Authority
DE
Germany
Prior art keywords
under pressure
pressure
production
mold
plaster
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
DED39685D
Other languages
German (de)
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.)
Ton & Steinzeugwerke Akt Ges F
Original Assignee
Ton & Steinzeugwerke Akt Ges F
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 Ton & Steinzeugwerke Akt Ges F filed Critical Ton & Steinzeugwerke Akt Ges F
Priority to DED39685D priority Critical patent/DE415091C/en
Application granted granted Critical
Publication of DE415091C publication Critical patent/DE415091C/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B28WORKING CEMENT, CLAY, OR STONE
    • B28BSHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B1/00Producing shaped prefabricated articles from the material
    • B28B1/26Producing 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
    • B28B1/265Producing 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 pressure being applied on the slip in the filled mould or on the moulded article in the mould, e.g. pneumatically, by compressing slip in a closed mould

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Dispersion Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Producing Shaped Articles From Materials (AREA)

Description

Verfahren zur Herstellung keramischer Waren im Wege des Gießverfahrens unter Druck. Es ist bekannt, keramische Waren im Wege des Gießverfahrens in einer Gipsform herzustellen, indem man u. a. Porzellanmasse mittels eines auf eine Gipsform aufgebrachten Gefäßes in die Form fließen läßt. Dieses Verfahren macht bei dickscherbigen Stücken Schwierigkeiten, weil die keramische Masse eine geringere Wasserdurchlässigkeit hat, und je stärker der Scherben ist, um so mehr läßt die Ansaugwirkung der Gipsform nach und hört allmählich ganz auf.Process for the production of ceramic goods by means of the casting process negative pressure. It is known, ceramic goods by way of the casting process in one To produce plaster mold by inter alia. Porcelain mass by means of an on a plaster mold Applied vessel can flow into the mold. This process makes for thick-bodied ones Pieces of difficulty because the ceramic mass has a lower water permeability has, and the stronger the shard, the more the plaster of paris form has a suction effect gradually and gradually ceases entirely.

Bei den bekannten Verfahren zur Herstellung keramischer Gefäße, bei welchen unter Einwirkung von Atmosphärendruck bei An-«-endung von Luftleere gearbeitet wird, steht die Gipsform mit dem offenen Schlickerbehälter in unmittelbarer Verbindung, und es fließt die Gießmasse mit natürlichem Gefälle in die offene Form. Sobald sich der nötige Scherben hier gebildet hat, wird mit verdünnter Luft weiter gearbeitet. um die Geschwindigkeit der #iüssi,-keitsabsaugun gkeitsabsaugung zu erhöhen.In the known method for producing ceramic vessels, at which worked under the influence of atmospheric pressure when the atmosphere was evacuated the plaster mold is in direct contact with the open slip container, and the casting compound flows into the open mold with a natural gradient. As soon as that has formed the necessary shards here, work continues with diluted air. to increase the speed of the suction.

Man hat auch bereits Druckluft derartig benutzt, daß man zunächst die Gießform mit der Masse gefüllt hat, bis die Scherbenstärke erreicht ist. Auf die mit 'lasse gefüllte Form wird nunmehr ein Deckt-1 luftdicht aufgelegt und alsdann mit Pref5luft auf das Innere des fertigen Gusses eingewirkt.Compressed air has already been used in such a way that at first has filled the mold with the mass until the shard is thick. on the form filled with 'let is now placed on a cover-1 airtight and then acted on the inside of the finished casting with pref5 air.

Selbst bei Amwendungröl.@rrer Vorsicht und Sorgfalt ist ein Mililingett des (,ußstückes bei diesen bekannten Arbeitsweisen keineswegs ausgeschlossen. Aus diesem Grunde haben auch diese umständlichen Ver= fahren kaum Beachtung in der Technik gefunden.Even with application oil. @ Rrer caution and care is a mililingett des (, ußstückes by no means excluded in these known working methods For this reason, these cumbersome procedures have hardly received any attention in technology found.

Gegenstand der Erfindung ist ein Verfahren, keramische Waren, unabhängig von der Scherbendicke und der Eigenart der Masse, durch Gießen unter höherem Druck in der Weise herzustellen, daß die Gießmasse durch Luft von mehr als i Atm. Spannung in die Gießform gepreßt und dort so lange unter Druck gehalten wird, bis das Wasser, soweit als nötig, aus der Form ausgetrieben ist. Dadurch, daß die Gießform von vornherein mit der ganzen zur Bildung des Scherbens erforderlichen Flüssigkeit unter Verwendung von höher als i Atm. gepreßter Luft gehalten wird, wird das Gesamtverfahren beträchtlich abgekürzt.The invention provides a method of making ceramic goods independently on the thickness of the shard and the nature of the mass, by pouring under higher pressure to produce in such a way that the casting compound by air of more than 1 atm. tension pressed into the mold and kept there under pressure until the water, as far as necessary, driven out of the mold. By the fact that the mold from the start with all the liquid required to form the body higher than i Atm. is maintained in compressed air, the overall process becomes considerable abbreviated.

Zur Ausführung des Verfahrens gemäß der Erfindung kann man ein die Masse enthaltendes Druckgefäß unter Druckluft setzen . und die Masse langsam durch ein das Druckgefäß und die GieLform verbindendes Zulaufrohr in die geschlossene Gipsform fließen lassen. Dadurch «-ircl eine hohe Geschwindigkeit des Wasserdurchtritts durch die Gipsform und eine Beschleunigung des Gusses erreicht. Weiter ergibt sich dabei der außerordentliche Vorteil. den Druck beliebig steigern zu können. l)ic in der Form vorhandene Luft wird während des Zulauf: durch c-ilic-n I.uftlialin, oder ir-endvinc andere beLtimw re@gclbare Vorrichtung zum Eiuwcichen g(-hr;tclit. So- bald die Luft entwichen ist, wird cl(-r Luft- hahn gcschlosscn. Durch diese I-inri-litung kann der Druck der Dick(, des Scherbens und der Art der blass(, ang(,pal,'a ii-crticn. Uni die Gipsform gegen Zerspringen zu schützen, wird sie durc-li I?isenbänder ge- schützt. Man kann ansta:t der Gipsform lür die Gicfiform auch t in beliebiges anderes poröses Material von höherer Festigkeit be- nutzen. Zweckmäßig läßt man die 'lasse aus dem Druckgefäß ganz allmählich von unten in die Gipsform eintreten. oder man verbindet einen die Gicl',masse enthaltenden Rührbot- tich mit einer Druckbirne und dieäe mit einer beliebi- langen Druckleitung mit zahlreichen Anschlüssen, an die die einzelnen Gipsformen in beliebiger Weise so angeschlossen s=nd, daß jede einzelne unter Druck steht. To carry out the method according to the invention, a pressure vessel containing the mass can be placed under compressed air. and let the mass flow slowly through a feed pipe connecting the pressure vessel and the casting mold into the closed plaster mold. As a result «-ircl achieved a high speed of water passage through the plaster mold and an acceleration of the casting. There is also the extraordinary advantage. to be able to increase the pressure at will. l) ic becomes air present in the form during the inflow: by c-ilic-n I.uftlialin, or ir-endvinc other beLtimw re @ gclbare Device for the calibration g (-hr; tclit. So- soon the air has escaped, cl (-r air- cock closed. Through this I-inri-litation can the pressure of the thick (, the shard and the type of pale (, ang (, pal, 'a ii-crticn. Uni to prevent the plaster mold from shattering protect it, is it thrown by protects. Instead of the plaster mold, you can do it the gicf form also t in any other porous material of higher strength to use. Expediently one lets the 'let out of the Gradually move the pressure vessel in from below enter the plaster mold. or one connects a stirring vessel containing the gicl ', tich with a pressure bulb and dieäe with one any length of pressure line with numerous Connections to which the individual plaster molds connected in any way s = nd that every single one is under pressure.

Claims (1)

P.\ T 1:N T-:1 NS PRÜCHE: i. Verfahren zur Herstellung kerami- scher lVaren im Wege des Gießverfah- rens unter Druck, dadurch gekennzeichnet, daß clic (@ichmas:;c durch Luft von mehr als i :dun. Spannung in die Gipsform gepref5t und dort so lange untc r Druck ge- halten wird, bis das Wasser, sc,wcit als nötig, atiS der Form ausbeti-ieben ist. . Verfahren nachtlnspruch t. dadurch ,gekennzeichnet, daß ein die Masse en- haltende:, Gefäß unser die 'Wirkung von Druckluft gesetzt und die Masse durch ein Zulaufrohr unter diesem Druck zur Gipsform geleitet wird. 3. Verfahren nach Anspruch I, dadurch gekennzeichnet, daß zwischen dem die N-l:asse enthaltenden Gefäß und der Gips- form eine Druckbirne eingeschalte-- wird, in welche die blasse eingelassen wird. um von dort unter Druck der Gipsform zuge- leitet zu werden.
P. \ T 1: N T-: 1 NS PRÜCHE: i. Process for the production of ceramic Scher lVaren by way of the casting process rens under pressure, characterized that clic (@ichmas:; c by air of more as i: dun. Tension in the plaster mold checked and there for so long under pressure will hold until the water, sc, wcit as necessary for the form to be exercised. . Proceedings after the complaint. through this , characterized that a mass en- holding: 'vessel our the' effect of Compressed air set and the mass through a feed pipe under this pressure to Plaster mold is passed. 3. The method according to claim I, characterized marked that between the the Nl: asse containing vessel and the plaster form a pressure bulb is switched on, into which the pale one is admitted. around from there under pressure to the plaster mold to be directed.
DED39685D 1921-05-21 1921-05-21 Process for the production of ceramic goods by means of the casting process under pressure Expired DE415091C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DED39685D DE415091C (en) 1921-05-21 1921-05-21 Process for the production of ceramic goods by means of the casting process under pressure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DED39685D DE415091C (en) 1921-05-21 1921-05-21 Process for the production of ceramic goods by means of the casting process under pressure

Publications (1)

Publication Number Publication Date
DE415091C true DE415091C (en) 1925-06-13

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Family Applications (1)

Application Number Title Priority Date Filing Date
DED39685D Expired DE415091C (en) 1921-05-21 1921-05-21 Process for the production of ceramic goods by means of the casting process under pressure

Country Status (1)

Country Link
DE (1) DE415091C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1115174B (en) * 1954-12-27 1961-10-12 Shenango China Inc Slip casting process for the production of ceramic goods
EP0191409A1 (en) * 1985-02-08 1986-08-20 Hitachi, Ltd. Slip casting method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1115174B (en) * 1954-12-27 1961-10-12 Shenango China Inc Slip casting process for the production of ceramic goods
EP0191409A1 (en) * 1985-02-08 1986-08-20 Hitachi, Ltd. Slip casting method
US4871497A (en) * 1985-02-08 1989-10-03 Hitachi, Ltd. Slip casting method

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