DE611550C - Process to increase the resistance of the surfaces of plaster molds - Google Patents

Process to increase the resistance of the surfaces of plaster molds

Info

Publication number
DE611550C
DE611550C DEP65611D DEP0065611D DE611550C DE 611550 C DE611550 C DE 611550C DE P65611 D DEP65611 D DE P65611D DE P0065611 D DEP0065611 D DE P0065611D DE 611550 C DE611550 C DE 611550C
Authority
DE
Germany
Prior art keywords
plaster
increase
molds
resistance
plaster molds
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
DEP65611D
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DEP65611D priority Critical patent/DE611550C/en
Application granted granted Critical
Publication of DE611550C publication Critical patent/DE611550C/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
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/009—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone characterised by the material treated
    • 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
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
    • C04B41/46—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with organic materials
    • C04B41/47—Oils, fats or waxes natural resins
    • 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
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/60—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only artificial stone
    • C04B41/61—Coating or impregnation
    • C04B41/62—Coating or impregnation with organic materials

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)

Description

Verfahren zur Erhöhung der Widerstandsfähigkeit der Oberflächen von Gipsformen Die in der keramischen Industrie bisher allgemein verwendeten Gipsformen zeigen den Nachteil, daß ihre Arbeitsflächen durch chemische oder mechanische Einwirkungen während des Arbeitsvorganges. mehr oder weniger stark angegriffen werden, wodurch frühzeitige Zerstörungen bei solchen Gipsformen eintreten. Man hat bereits Maßnahmen vorgeschlagen, diesen Gipsformen im Ganzen eine größere Widerstandsfähigkeit zu verleihen. Dies erscheint in den meisten Fällen jedoch überflüssig, weil im wesentlichen nur die Arbeitsflächen beansprucht werden und der besonders starken Abnutzung unterworfen sind. Und die Mittel, die in anderen Industriezweigen zur Verbesserung der Haltbarkeit von Gipsformen gebräuchlich sind, nämlich das Überziehen der Oberflächen mit sogenannten Schmieren oder das oberflächliche Imprägnieren mit wachsartigen Stoffen, sind hier nicht anwendbar, weil dadurch die Porosität beeinflußt würde, auf die es beim keramischen Gießverfahren in erster Linie ankommt.Process to increase the resistance of the surfaces of Plaster molds The plaster molds generally used in the ceramics industry show the disadvantage that their work surfaces are affected by chemical or mechanical influences during the work process. be attacked to a greater or lesser extent, as a result of which premature destruction of such plaster molds occurs. You already have measures suggested that these plaster molds as a whole be given greater resistance to lend. In most cases, however, this appears superfluous because it is essentially only the work surfaces are used and subjected to particularly heavy wear and tear are. And funds used in other industries to improve shelf life of plaster molds are common, namely the coating of the surfaces with so-called Lubricating or impregnating the surface with waxy substances are here not applicable because it would affect the porosity of the ceramic Casting process matters in the first place.

Erfindungsgemäß sollen die der erhöhten Abnutzung ausgesetzten Arbeitsflächen von Gipsformen für die keramische Industrie mit einem Mittel behandelt werden, das den Arbeitsflächen eine wesentlich größere Widerstandsfähigkeit geben mechanische oder chemische Einwirkungen verleiht, ohne daß dabei jedoch die notwendige Saugfähigkeit des Gipses nennenswert beeinträchtigt wird.According to the invention, the work surfaces exposed to increased wear and tear of plaster molds for the ceramic industry are treated with an agent that give the work surfaces a much greater mechanical resistance or chemical effects, but without the necessary absorbency the plaster of paris is significantly impaired.

Nach der Erfindung werden die Oberflächen von Gipsformen zur Herstellung keramischer Massen dadurch verfestigt, dä.ß die Arbeitsflächen der Formen mit verdünnten Lösungen von Stoffen imprägniert werden, die, ohne die Saugfähigkeit nennenswert zu beeinträchtigen, die Festigkeit des Gipses erhöhen, wie z. B. verdünnte Lösungen von Harzen, Schellack, Kolophonium, Firnis usw. in Terpentinöl, Benzol, Benzin, Petroleum u. dgl. Das Verfestigungsmittel wird also mit einem Lösungsmittel vermischt, das nach dem Eindringen in die Kapillaren der Gipsform verdunstet oderabgesaugt wird. Die Wirkung der Verfestigung der Formoberflächen beruht bei diesem Verfahren darauf, daß die Kapillarröhrchen mit einem dünnen Häutchen des Imprägniermittels ausgekleidet werden, wodurch auch gleichzeitig ein Schutz gegen chemische Angriffe der Oberfläche herbeigeführt wird.According to the invention, the surfaces of plaster molds are used for manufacture ceramic masses solidified by the fact that the working surfaces of the molds are thinned Solutions of substances are impregnated, which, without affecting the absorbency worth mentioning to affect, increase the strength of the plaster, such. B. dilute solutions of resins, shellac, rosin, varnish etc. in turpentine oil, benzene, petrol, Petroleum and the like. The solidifying agent is mixed with a solvent, which after penetrating into the capillaries of the plaster mold evaporates or is sucked off will. The effect of solidifying the mold surfaces is based on this method Ensure that the capillary tube is covered with a thin membrane of the impregnating agent be lined, which also provides protection against chemical attacks the surface is brought about.

Das Verdünnungsverhältnis der Lösung richtet sich nach dem Lösungsmittel sowie nach der Art des zur Verwendung gelangenden, zu lösenden.Stoffes. Durch Versuch läßt sich von Fall. zu Fall in einfachster Weise bestimmen, wieweit die Konzentration der Lösung gesteigert werden kann, ohne daß die Saugfähigkeit der Formen unzulässig beeinträchtigt wird. Als geeignete Lösungen haben sich unter anderem erwiesen: a.) 20 % Petroleum, 6o % Benzin, 200/0 Firnis.The dilution ratio of the solution depends on the solvent as well as the type of substance to be dissolved that is to be used. By trial lets fall. in the simplest way to determine the extent to which the concentration the solution can be increased without the absorbency of the forms inadmissible is affected. Suitable solutions have proven to be among others proven: a.) 20% petroleum, 6o% gasoline, 200/0 varnish.

b) 900/0 Spiritus, io % einer normalen Lacklösung. c) 5o % Petroleum, 2 5 % gereinigtes Terpentinöl, 25 % Firnis.b) 900/0 spirit, 10% of a normal paint solution. c) 5o% petroleum, 2 5% purified turpentine oil, 25% varnish.

Aber das sind nur Ausführungsbeispiele; es werden sich auch noch andere geeignete Lösungen von Fall zu Fall finden lassen.But these are only examples; there will be others too find suitable solutions on a case-by-case basis.

Claims (1)

PATENTANSPRUCH: Verfahren zur Verfestigung der Oberflächen von Gipsformen zum Formen keramischer Massen, dadurch gekennzeichnet, daß die Arbeitsflächen der Formen mit verdünnten Lösungen von Stoffen imprägniert werden, die, ohne die Saugfähigkeit nennenswert zu beeinträchtigen, die Festigkeit des Gipses erhöhen, wie z. B. verdünnte Lösungen. von Harzen, Schiellack, Kolophonium, Firnis usw. in Terpentinöl, Benzol, Benzin, Petroleum usw.PATENT CLAIM: Process for solidifying the surfaces of plaster molds for molding ceramic masses, characterized in that the working surfaces of the Molds can be impregnated with dilute solutions of substances that, without affecting the absorbency to significantly affect, increase the strength of the plaster, such. B. diluted Solutions. of resins, lacquer, rosin, varnish etc. in turpentine oil, benzene, Gasoline, kerosene, etc.
DEP65611D 1932-07-01 1932-07-01 Process to increase the resistance of the surfaces of plaster molds Expired DE611550C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEP65611D DE611550C (en) 1932-07-01 1932-07-01 Process to increase the resistance of the surfaces of plaster molds

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEP65611D DE611550C (en) 1932-07-01 1932-07-01 Process to increase the resistance of the surfaces of plaster molds

Publications (1)

Publication Number Publication Date
DE611550C true DE611550C (en) 1935-03-28

Family

ID=7390639

Family Applications (1)

Application Number Title Priority Date Filing Date
DEP65611D Expired DE611550C (en) 1932-07-01 1932-07-01 Process to increase the resistance of the surfaces of plaster molds

Country Status (1)

Country Link
DE (1) DE611550C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3305387A (en) * 1963-05-16 1967-02-21 Weyerhaeuser Co Gypsum castings and method of producing the same
FR2686082A1 (en) * 1992-01-10 1993-07-16 Bouillet Jean Noel Process for the surface treatment of an article manufactured from terracotta and article obtained

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3305387A (en) * 1963-05-16 1967-02-21 Weyerhaeuser Co Gypsum castings and method of producing the same
FR2686082A1 (en) * 1992-01-10 1993-07-16 Bouillet Jean Noel Process for the surface treatment of an article manufactured from terracotta and article obtained

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