KR20140122388A - Non-absorbing heat-resistant ceramic manufacturing method - Google Patents

Non-absorbing heat-resistant ceramic manufacturing method Download PDF

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Publication number
KR20140122388A
KR20140122388A KR1020130038974A KR20130038974A KR20140122388A KR 20140122388 A KR20140122388 A KR 20140122388A KR 1020130038974 A KR1020130038974 A KR 1020130038974A KR 20130038974 A KR20130038974 A KR 20130038974A KR 20140122388 A KR20140122388 A KR 20140122388A
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KR
South Korea
Prior art keywords
weight
heat
resistant ceramic
basis
ceramic
Prior art date
Application number
KR1020130038974A
Other languages
Korean (ko)
Inventor
장영환
Original Assignee
장영환
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.)
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Priority to KR1020130038974A priority Critical patent/KR20140122388A/en
Publication of KR20140122388A publication Critical patent/KR20140122388A/en

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Classifications

    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47JKITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J36/00Parts, details or accessories of cooking-vessels
    • A47J36/02Selection of specific materials, e.g. heavy bottoms with copper inlay or with insulating inlay
    • A47J36/04Selection of specific materials, e.g. heavy bottoms with copper inlay or with insulating inlay the materials being non-metallic
    • CCHEMISTRY; METALLURGY
    • C03GLASS; MINERAL OR SLAG WOOL
    • C03CCHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C8/00Enamels; Glazes; Fusion seal compositions being frit compositions having non-frit additions
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B33/00Clay-wares
    • C04B33/02Preparing or treating the raw materials individually or as batches
    • C04B33/04Clay; Kaolin
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B33/00Clay-wares
    • C04B33/02Preparing or treating the raw materials individually or as batches
    • C04B33/13Compounding ingredients
    • C04B33/131Inorganic additives
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B33/00Clay-wares
    • C04B33/32Burning methods
    • C04B33/34Burning methods combined with glazing

Abstract

The present invention relates to a method for manufacturing a non-absorbing heat-resistant ceramic and, especially, to a method for manufacturing a heat-resistant ceramic which does not have absorbing capacity by having a completely magnetized basis forming a body of the ceramic. The method for manufacturing the non-absorbing heat-resistant ceramic does not have absorbing capacity, is free from contamination due to no microvoids, and prevents cracks by making the basis and an enamel have an equal thermal expansion coefficient by completely magnetizing the basis by performing forming and patterning with the basis composed of 52 wt% of petalite, 7 wt% of talc, 10 wt% of clay, 4 wt% of feldspar, 26 wt% of kaolin, and 2 wt% of zircon, first firing the basis at 900 deg. C, and coating the basis with the enamel composed of 54.5 wt% of petalite, 9.5 wt% of kaolin, 15 wt% of feldspar, 12.5 wt% of calcination silica, 5.5 wt% of talc, 2.5 wt% of zinc oxide, and 0.5 wt% of barium carbonate.

Description

[0001] The present invention relates to a non-absorbing heat-resistant ceramic manufacturing method,
More particularly, the present invention relates to a method for producing a non-absorbing heat-resistant ceramic, and more particularly, to a method for producing a non-absorbing heat-resistant ceramic, Heat-resistant ceramics without cracking.
Generally heat-resistant ceramics are made as pots, and pots made of pottery are made of heat-resistant ceramics by baking the raw materials mixed with inorganic materials such as kaolin, clay, Sansungjeol and leaf feldspathes in a kiln at 1150 degrees and 1300 degrees.
 Heat-resistant ceramics such as cordierite and mullite are also present, but they are not suitable for making non-absorbing heat-resistant ceramics by applying glazes because of the formation of micropores.
 In order for ceramics to have heat resistance, they have micropores to absorb the thermal expansion and to withstand thermal shocks. These micropores absorb the ceramic, shortening the life of the ceramic and increasing the degree of contamination.
 In addition, the ceramic is finished by applying glaze so that the micropores are not exposed to the surface of the ceramic. If the thermal expansion coefficient of the glaze is not matched, the surface of the glaze is cracked and absorbed into the cracks.
  It is an object of the present invention to provide a method of manufacturing a heat-resistant ceramic in which the base constituting the body of the ceramic is completely magnetized and does not have micropores,
  Another object of the present invention is to provide a method of manufacturing a heat-resistant ceramic by adjusting the compounding ratio of the base material and the mineral used in the glaze so as to prevent cracks from occurring on the surface of the heat-resistant ceramic material by adjusting the thermal expansion coefficient of the base material and glaze.
In order to achieve the above object, according to the present invention, there is provided a method for manufacturing a heat-resistant ceramic body, comprising the steps of forming a base body, molding and shaping the base body, forming a preform at 900 ° C, .
The substrate is characterized by comprising a substrate containing 52% by weight of petalite, 7% by weight of talc, 10% by weight of clay, 4% by weight of feldspar, 26% by weight of kaolin and 2% by weight of zircon.
The glaze is characterized in that the glaze is composed of 54.5% by weight of lepidolite, 9.5% by weight of kaolin, 15% by weight of feldspar, 12.5% by weight of silica, 5.5% by weight of talc, 2.5% by weight of zinc oxide and 0.5% by weight of barium carbonate.
In the present invention, the heat-resistant ceramics made of the base material and the glaze composition of the non-absorbing heat-resistant ceramic of the present invention are completely magnetized and have no water absorption, It combines.
In the present invention, the heat-resistant ceramics made of the base material and the glaze composition of the non-absorbing heat-resistant ceramic of the present invention are completely magnetized and have no water absorption, It combines.
 Hereinafter, a method for producing an non-absorbing heat-resistant ceramic according to the present invention will be described in more detail.
  Heat-resistant ceramics must be able to withstand thermal expansion to have heat resistance. In ceramic, thermal expansion forms micropores in ceramics, absorbing expansion due to heat by micropores, and reducing the thermal behavior of ceramics, so that they have heat resistance. However, such micropores absorb and adsorb foreign matter between the pores, shortening the lifetime of the ceramic and increasing the degree of contamination.
 When the thermal expansion coefficient of the substrate and the glaze is not matched, the surface of the glaze is cracked and absorbed into the gap of the cracks
  In the present invention, in order to ensure that the non-absorbing heat-resistant ceramic has heat resistance and has no water absorption, it is possible to form a dense base without fine holes by adding zircon as a catalyst to a general heat resistant material.
 Further, by adding calcined silica to the glaze so as to have the same thermal expansion coefficient as that of the substrate, it is possible to maximize the smoothness of the surface while reducing the coefficient of thermal expansion.
 In the present invention, the composition ratio of the substrate is preferably 52% by weight of petalite, 7% by weight of talc, 10% by weight of clay, 4% by weight of feldspar, 26% by weight of kaolin and 2% by weight of zircon.
 In the present invention, the composition ratio of the glaze is preferably 54.5% by weight of folium, 9.5% by weight of kaolin, 15% by weight of feldspar, 12.5% by weight of silica, 5.5% by weight of talc, 2.5% by weight of zinc oxide and 0.5% by weight of barium carbonate.
 In order to accomplish the above-mentioned object, the following will describe in detail an embodiment of the present invention.
 Example 1.
 The optimal composition ratio of the non-absorbing heat resistant ceramic bead composition according to the present invention was 52% by weight of petalite, 7% by weight of talc, 10% by weight of clay, 4% by weight of feldspar, 26% , And 2% by weight of zircon were the most stable products.
 In the compositions of the above examples, the higher the lobe feldspar ratio, the higher the heat resistance, but the lobe feldspare was minimized to about 52 wt%, thereby increasing the plasticity of the plywood while maintaining the heat resistance, It is preferable to mix about 26% by weight of highly heat resistant kaolin.
When the talc is added in an amount of 7 wt% or more, the firing temperature is lowered and the strength of the product is lowered, resulting in deterioration of the product quality.
When the feldspar is added in an amount of 4.5 wt% or more, the firing temperature is lowered and the strength of the product is lowered, resulting in deterioration of the product quality.
When the amount of the clay is increased, the moldability of the product during production is good, but the heat resistance of the product is deteriorated and the quality of the product is deteriorated.
 And 2% by weight of zircon as an additive to make the micropores dense and well-magnetized.
 The glaze composition of the non-absorbing heat-resistant ceramic produced as described above is as follows.
 The glaze composition is the best glaze composition with 54.5% by weight of lepidolite, 9.5% by weight of kaolin, 15% by weight of feldspar, 12.5% by weight of calcined silica, 5.5% by weight of talc, 2.5% by weight of zinc oxide and 0.5% by weight of barium carbonate.
 Increasing the amount of leaf feldspar increases heat resistance, but as the fire resistance increases, the firing temperature increases and thus the production cost increases. To compensate, the calcined silica is mixed with the glaze composition.
 When the amount of the talc increases, the refractory of the glaze is lowered and the quality of the product is lowered.
 If the amount of feldspar increases, the surface gloss of the product is improved, but the fire resistance of the glaze is lowered and a crack is generated.
 The zinc oxide and barium carbonate increase the density of the glaze.
The method of manufacturing the non-absorbing heat-resistant ceramic according to the present invention comprises shaping the product with the base composition according to the present invention which is a mixed composition, molding the base material at 900 ° C again, sieving the base composition with the glaze composition according to the present invention, ℃ to make non-absorbing heat-resistant ceramic products.
While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention as defined by the appended claims. .

Claims (3)

  1.  Forming a base to be a ceramic body, shaping and shaping the resultant into a formed body, sprinkling the mixture at 900 ° C, and sintering the mixture with glaze at a temperature of 1250 ° C.
  2.  The base composition according to claim 1, characterized in that it comprises a substrate containing 52% by weight of petalite, 7% by weight of talc, 10% by weight of clay, 4% by weight of feldspar, 26% by weight of kaolin and 2% Wherein the heat-resistant ceramic is produced by the method.
  3. The glaze composition according to claim 1, wherein the glaze composition is a mixture of 54.5% by weight of lepidolite, 9.5% by weight of kaolin, 15% by weight of feldspar, 12.5% by weight of silica, 5.5% by weight of talc, 2.5% by weight of zinc oxide and 0.5% Wherein the heat-resistant ceramic is produced by the method.


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KR1020130038974A 2013-04-10 2013-04-10 Non-absorbing heat-resistant ceramic manufacturing method KR20140122388A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020130038974A KR20140122388A (en) 2013-04-10 2013-04-10 Non-absorbing heat-resistant ceramic manufacturing method

Publications (1)

Publication Number Publication Date
KR20140122388A true KR20140122388A (en) 2014-10-20

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101694912B1 (en) * 2016-05-20 2017-01-10 주식회사 리빙아이콘 Crystal glaze pottery and method for manufacturing thereof
KR101708391B1 (en) * 2016-05-20 2017-02-21 주식회사 리빙아이콘 Non-crackered enamel, earthen pot having no cracks and heat resisting using the same, and method for manufacturing the same
KR20180046371A (en) * 2016-10-27 2018-05-08 고려도토 주식회사 Non-absorbing heat-resistant porcelain with flat bottom and preparation thereof
KR20180078025A (en) * 2016-12-29 2018-07-09 주식회사 지포트리 Heat resistance ceramic kaolin manufacture method using induction

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101694912B1 (en) * 2016-05-20 2017-01-10 주식회사 리빙아이콘 Crystal glaze pottery and method for manufacturing thereof
KR101708391B1 (en) * 2016-05-20 2017-02-21 주식회사 리빙아이콘 Non-crackered enamel, earthen pot having no cracks and heat resisting using the same, and method for manufacturing the same
KR20180046371A (en) * 2016-10-27 2018-05-08 고려도토 주식회사 Non-absorbing heat-resistant porcelain with flat bottom and preparation thereof
KR20180078025A (en) * 2016-12-29 2018-07-09 주식회사 지포트리 Heat resistance ceramic kaolin manufacture method using induction

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