KR102179041B1 - Manufactureing method of ceramics using the glaze including ashes of chestnut bur - Google Patents

Abstract

The present invention relates to a method of manufacturing porcelain using a glaze containing chestnut ash, and according to an embodiment of the present invention, a molding step of forming a dough into a form of porcelain; After performing the molding step, a rough firing step of heating the molded ceramics at a temperature of 700°C to 1000°C for 30 to 90 minutes; A trial oiling step of applying glaze to the unglazed ceramics; And after drying the glazed ceramics, a chaebol firing step of heating for 30 minutes to 150 minutes at a temperature of 1100 ℃ to 1300 ℃ using at least any one of the electric kiln and the gas kiln; Including, the glaze , Chestnut ash, pottery stone, and talc are included as a base material, and kaolin and silica stone are further included as a sub-material.

Description

A method of manufacturing porcelain using glaze containing chestnut ash {MANUFACTUREING METHOD OF CERAMICS USING THE GLAZE INCLUDING ASHES OF CHESTNUT BUR}

The present invention in the glaze used in the manufacture of porcelain, by manufacturing porcelain by using the glaze containing chestnut ash, porcelain manufacturing method using the glaze containing chestnut ash to provide porcelain with improved quality and aesthetics It is related to.

In general, glaze refers to a glassy material used to cover the surface of porcelain, tiles, tiles, etc., before being molded and fired. When firing by applying glaze to porcelain, the glass film adhered to the porcelain surface is formed. By forming, it is possible to reduce the water permeability of ceramics, express aesthetics, and improve the strength of ceramics.

On the other hand, conventional glazes have usually consisted of feldspar, silica, kaolin, limestone, talc, fluorspar, and bone powder. However, these conventional glazes were made using only soil or stone powder. There was a limit in not being able to utilize the luxurious natural beauty such as celadon and white porcelain of the times.

Meanwhile, in the East, a glaze using wood ash has been used instead of limestone from ancient times. As a related prior art, Korean Patent Laid-Open No. 10-2013-0078061 (glaze composition for ceramics including bamboo ash and its manufacturing method) uses bamboo. Disclosed is a ceramic glaze manufacturing method that is effective in reducing environmental pollution caused by waste resources by recycling burned bamboo ash.

However, as the wood ash including the bamboo ash of the prior art described above is manufactured by low temperature firing, there is a problem that the durability of the porcelain is lower than that of the conventional glaze, so that the manufactured porcelain is unsuitable for being used as a living porcelain.

Accordingly, a first object of the present invention is to provide a glaze capable of improving the flower quality of ceramics produced by including chestnut ash as a raw material for an eco-friendly glaze.

In addition, a second object of the present invention is to provide a glaze that can be used even at a high firing temperature by minimizing the degree of occurrence of cracks in ceramics caused by the glaze by including chestnut ash as a raw material for an eco-friendly glaze, and having an improved absorption rate.

In order to achieve the above object, a method for manufacturing porcelain using a glaze containing chestnut ash according to an embodiment of the present invention includes a molding step of forming a dough into a form of porcelain; After performing the molding step, a rough firing step of heating the molded ceramics at a temperature of 700°C to 1000°C for 30 to 90 minutes; A trial oiling step of applying glaze to the unglazed ceramics; And after drying the glazed ceramics, a chaebol firing step of heating for 30 minutes to 150 minutes at a temperature of 1100 ℃ to 1300 ℃ using at least any one of the electric kiln and the gas kiln; Including, the glaze , Chestnut ash, pottery stone, and talc are included as a base material, and kaolin and silica stone are further included as a sub-material.

In the glaze described above, the mixture weight ratio (wt%) of chestnut ash, pottery stone and talc as a base material is in a ratio of 1 to 3:6 to 8:0.1 to 2, and kaolin and silicate as sub-materials, It is preferable to add 10 to 60 wt% of the total weight ratio.

In the above-described chaebol firing step, when the ceramics are fired in an oxidizing atmosphere, it is preferable to be fired at a temperature of 1210°C to 1280℃, and when the ceramics are fired in a reducing atmosphere, it is preferable to fire at a temperature of 1150℃ to 1270℃. Do.

In the above-described testing step, in applying the glaze to ceramics, it is preferable to apply the glaze to the ceramics by using any one of immersion oil, spray oil, brush oil, and spill oil.

In the above-described molding step, it is preferable to form a ceramic shape using at least one of white porcelain and powdered clay as a raw material for the dough.

According to an embodiment of the present invention, chestnut ash contains a large amount of potassium oxide as a main component, so it has a low coefficient of thermal expansion, and this potassium oxide has a low coefficient of thermal expansion, so when used in glazes, ceramics are fired at high temperatures. By making it possible to improve the durability of the glaze, there is an effect of remarkably improving the flower degree when compared to the glaze using wood ash used in the prior art.

In addition, according to an embodiment of the present invention, it is possible to minimize the degree of occurrence of cracks in the manufacture of ceramics by applying glaze containing chestnut ash to the molded ceramics, thereby compensating for the disadvantages of water absorption. It can also be used at temperature, and accordingly, there is an effect of providing a glaze with expanded versatility.

In addition, according to an embodiment of the present invention, the function of the porcelain glaze is improved by using a glaze containing chestnut ash to improve aesthetics, and the components of the glaze are made of natural raw materials that are harmless to the human body, so that users can use Even if it is used, it has the effect of providing eco-friendly ceramics without difficulty.

1 is a flow chart of a method of manufacturing porcelain using a glaze containing chestnut pine according to an embodiment of the present invention.
2 is an example of triangular coordinates showing a three-component experiment of a constituent material used as a base material for a glaze containing chestnut ash according to an embodiment of the present invention.
3 is a square coordinate experiment for an experiment of adding white kaolin and silica as sub-materials to a base material composed of chestnut ash, pottery stone and talc in order to prepare a glaze containing chestnut ash according to an embodiment of the present invention. Yes.
Figure 4 is an example of a table showing the combination ratio of the glaze containing chestnut pine according to an embodiment of the present invention.
5 is an example showing a result of manufacturing ceramics by applying a glaze containing chestnut ash to ceramics according to an embodiment of the present invention.

In the following, various embodiments and/or aspects are now disclosed with reference to the drawings. In the following description, for purposes of explanation, a number of specific details are disclosed to aid in an overall understanding of one or more aspects. However, it will also be appreciated by those of ordinary skill in the art that this aspect(s) may be practiced without these specific details. The following description and the annexed drawings set forth in detail certain illustrative aspects of one or more aspects. However, these aspects are exemplary and some of the various methods in the principles of the various aspects may be used, and the descriptions described are intended to include all such aspects and their equivalents.

As used herein, "an embodiment", "example", "aspect", "example", etc. may not be construed as having any aspect or design described as being better or advantageous than other aspects or designs. .

In addition, the terms "comprising" and/or "comprising" mean that the corresponding feature and/or element is present, but excludes the presence or addition of one or more other features, elements, and/or groups thereof. It should be understood as not.

In addition, terms including ordinal numbers such as first and second may be used to describe various elements, but the elements are not limited by the terms. These terms are used only for the purpose of distinguishing one component from another component. For example, without departing from the scope of the present invention, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element. The term and/or includes a combination of a plurality of related listed items or any of a plurality of related listed items.

In addition, in the embodiments of the present invention, unless otherwise defined, all terms used herein, including technical or scientific terms, are those commonly understood by those of ordinary skill in the art to which the present invention belongs. It has the same meaning. Terms as defined in a commonly used dictionary should be interpreted as having a meaning consistent with the meaning in the context of the related technology, and unless explicitly defined in the embodiments of the present invention, an ideal or excessively formal meaning Is not interpreted as.

The present invention relates to a method for manufacturing porcelain using a glaze containing chestnut ash, and a first object of the present invention is to provide a glaze capable of improving the degree of harmony of manufactured porcelain by including chestnut pine as a raw material for an eco-friendly glaze. A second object is to provide a glaze that can be used even at a high firing temperature by including chestnut ash as a raw material of the glaze, thereby minimizing the degree of occurrence of cracks in ceramics caused by glaze, having an improved absorption rate, and being usable even at high firing temperatures.

In order to achieve the above object, the present invention will be described in more detail below with reference to the drawings.

First, referring to FIG. 1, in FIG. 1, a flowchart of a method of manufacturing ceramics using a glaze containing chestnut ash according to an embodiment of the present invention is shown.

That is, in the method of manufacturing porcelain using a glaze containing chestnut ash, first, a molding step (S10) of forming a dough into a form of porcelain may be performed.

At this time, it is preferable to use at least one of clay from white porcelain and powdered clay as the dough in step S10 described above.

The above-mentioned white porcelain is the soil for making white porcelain, which is treated with iron removal, and has the finest particles among porcelain materials, so it can be fired at high temperature. It exhibits milky white color in reduction firing, and it is understood that it is the most ideally used clay for making tableware. Can be.

In addition, the above-described pungcheong soil may be understood to be a clay that can be used in both an oxidizing atmosphere and a reducing atmosphere during sintering, which has a relatively large amount of iron and has a relatively large amount of iron as a soil for making a pungcheong morale.

On the other hand, in another embodiment of the present invention, after step S10 and before performing step S20 to be described later, porcelain, which is a molded product obtained by molding the dough, is naturally dried in a shaded and well-ventilated place, or at low temperature using a dryer. A drying step of drying at least one time may be further included, and the present invention is not limited thereto.

In addition, in the present invention, after performing step S10, an unglazed sintering step (S20) of heating the molded ceramics at a temperature of 700°C to 1000°C for 30 to 90 minutes is performed.

Step S20 is a process of baking the molded product by heating the naturally dried molded product at low temperature using an electric furnace or wood fire, etc., so that the glaze is well coated on the molded product in the later-described trial step of applying the glaze before subsequent chaebol firing. At the same time, there is an effect of reducing the breakage rate of the molded article and improving the color development ability by performing step S20.

On the other hand, after performing the above-described step S20, a test step (S30) of applying glaze to the unglazed ceramics may be performed.

At this time, the glaze applied in step S30 described above may include chestnut ash, pottery stone and talc as a base material.

At this time, the above-described chestnut ash, referring to the component analysis table according to the XRF analysis results of chestnut pine ash in Table 1, chestnut pine ash is magnesium oxide (MgO) 13.86%, calcium oxide (CaO) 23.6%, phosphorus oxide (P ₂ O ₅ ) It is composed of 6.70%, manganese oxide (MnO) 6.23%, potassium oxide (K ₂ O) 31.89%. In particular, it has a low coefficient of thermal expansion with 31.89% of potassium oxide (K ₂ O) as its main component. When chestnut ash having such a component is used for glaze, it is possible to sinter the glazed porcelain at high temperature, thereby improving the durability of the glaze and remarkably improving the flower degree.

(wt%) CP
RM SiO ₂ Al ₂ O ₃ Fe ₂ O ₃ MgO CaO P ₂ O ₅ MnO K ₂ O Na ₂ O Ig loss Molecular
weight 60.09 101.96 159.70 40.31 56.08 793.63 70.94 61.98 24.20 - Chestnut Bur ash 8.56 3.60 1.25 13.86 23.60 6.70 6.23 31.89 0.26 4.05

Meanwhile, the above-described pottery stone is a white rock composed mainly of fine quartz and sericite, and it can be understood that it is a material containing both clay, siliceous and feldspar, which are the main raw materials of ceramics. As it is included, plasticity increases and dry strength increases.

In addition, the talc described above is one of silicate minerals, which is soft and shiny and has a uniquely smooth property. When used in glaze, it acts as an emulsifying agent and has the property of turning the glaze into an opaque state.

In the present invention, as a result of several experiments in producing a glaze using chestnut ash, pottery stone and talc as the base material described above, the weight ratio of chestnut ash, pottery stone and talc is 1 to 3:6 to 8:0.1 to 2 It was found that the function as a glaze can be performed most optimally when mixing in a ratio, and more preferably, when the weight ratio of chestnut ash, pottery stone and talc is 2:7:1, it is most stable. And it was found that the improvement of durability and flower degree is maximized.

In addition, in the present invention, in order to impart stability to the above-described base material, kaolin and silicate may be further added as sub-materials through a gelling method.

At this time, the above-described kaolin has a basic chemical formula of Al ₂ O ₃ 2SiO ₂ 2H ₂ O, and is also called clay or white clay, and in the present invention, it is preferable to use white kaolin having a pure white color, and kaolin is a glaze. When added to, the glaze slip is suspended and the glaze slip adheres to the substrate.

Meanwhile, the above-described kaolin is added as a sub-material in the present invention, and if it is added in excess of 60 wt% to the above-described base material, a large amount of yellow spots may be formed on the finished porcelain surface. Conversely, when it is added less than 10 wt%, , Since there is a concern that the glaze layer may be peeled off the surface of the finished porcelain, it is preferably added selectively from 10wt% to 60wt%.

In terms of chemical composition, the above-described silica stone is characterized in that silicate anhydride (SiO ₂ ) is the main component, and the white one is called white silica, and it is calculated from pegmatite, quartz vein, quartzite, chut, etc., and the silicate content is 95 to 97% or more. do.

Especially, what is included in pegmatite is called janggyuseok because it is mined along with feldspar, and baekgyuseok is mainly used as a raw material for glass, ceramics, silicon, and ferrosilicon.

Therefore, in the present invention, it is preferable to use white silicate, and it forms a glassy substance in such white silicate glaze and performs a function of increasing whiteness.In addition, when the above-described silica stone is added to the glaze, the thermal expansion coefficient is low, so the melting temperature It has the effect of increasing fire resistance and increasing hardness and strength.

On the other hand, when the above-described silica stone is added in excess of 60 wt% with respect to the total weight ratio of the above-described base material, there is a problem that the glaze does not dissolve well or causes the glaze curl to form yellow spots. Conversely, when it is added in less than 10 wt% , Since there is a problem that the surface of the finished porcelain becomes rough, it will be preferable to be selectively added within the range of 10wt% to 60wt%.

That is, in the glaze containing chestnut ash described in the present invention, chestnut ash, pottery stone, and talc are mixed as a base material in a ratio of 2:7:1, and a sub-material composed of silica stone and talc is used as the base material. It can be understood that 10 to 60 wt% of the total weight of the may be added.

The glaze containing chestnut ash composed in this way is applied to ceramics in step S30, soaking oil to be applied by immersing ceramics in the glaze, spraying oil that is applied in the form of spraying the glaze on ceramics, and brushing the glaze on ceramics It can be applied to ceramics by using any one of a brushing technique for applying the glaze and a dripping technique for applying the glaze to the ceramics.

The ceramic glazed by performing the above-described step S30 passes through a preset drying time (1 to 12 hours), and then at a temperature of 1100°C to 1300°C using at least one of an electric kiln and a gas kiln. The chaebol firing step (S40) of heating for 30 to 150 minutes may be performed.

On the other hand, the above-described step S40, when firing the ceramics in an oxidizing atmosphere, it is preferable to perform the chaebol firing at a temperature of 1210 ℃ to 1280 ℃, more preferably so that the oxidizing atmosphere in the kiln is more easily created. For this purpose, it is preferable to inject more air from the outside so that the chaebol are fired.

On the other hand, in the above-described step S40, it is preferable to perform the chaebol firing at a temperature of 1150°C to 1270°C when the ceramics are calcined in a reducing atmosphere.

That is, the above-described step S40 may be understood as a step of heating and firing once more in order to sinter the porcelain manufactured by performing steps S10 to S30, and preferably, the above-described temperature for 30 to 90 minutes in an electric kiln. After maintaining the, it is preferable to sinter the ceramics by maintaining the above-described temperature for 30 to 90 minutes in a gas kiln.

Overall, according to an embodiment of the present invention, chestnut pine ash contains a large amount of potassium oxide as a main component, and thus has a low coefficient of thermal expansion, and this potassium oxide has a low coefficient of thermal expansion, so that when used in glazes, it can be used for glazing. By enabling firing at high temperature, there is an effect of improving the durability of the glaze and making it possible to manufacture ceramics having a remarkably improved flower degree compared to the glaze using wood ash used in the prior art.

In addition, according to an embodiment of the present invention, it is possible to minimize the degree of occurrence of cracks in the manufacture of ceramics by applying glaze containing chestnut ash to the molded ceramics, thereby compensating for the disadvantages of water absorption. It can also be used at temperature, and accordingly, there is an effect of providing a glaze with expanded versatility.

In addition, according to an embodiment of the present invention, the function of the porcelain glaze is improved by using a glaze containing chestnut ash to improve aesthetics, and the components of the glaze are made of natural raw materials that are harmless to the human body, so that users can use Even if it is used, it has the effect of providing eco-friendly ceramics without difficulty.

As described above, although the embodiments have been described by the limited embodiments and drawings, various modifications and variations are possible from the above description to those of ordinary skill in the art.

FIG. 2 shows an example of triangular coordinates showing a three-component experiment of a constituent material that is a base material of a glaze containing chestnut ash according to an embodiment of the present invention. In the following description, FIG. 1 A description of unnecessary embodiments overlapping with the description will be omitted.

That is, through the ternary experiment according to various embodiments of pottery, chestnut ash, and talc in 100 of FIG. 2, a suitable combination ratio of the ternary glaze as in 200 could be obtained. As a result of the experiment, Example 9 of 200 When the combination ratio of pottery 70, chestnut ash 20, and talc 10 corresponding to, the finished ceramic oil surface has the clearest, even and transparent oil surface.

In other words, in the present invention, an experiment on the suitability of the case where a glaze using chestnut ash was manufactured and tested on porcelain was completed, and as a result, the glaze as a function of potassium oxide, the main component of chestnut pine ash, has a low coefficient of thermal expansion, thereby making ceramics at high temperatures. By making it possible to fire at, the durability of the finished ceramics can be improved, and the effect of remarkably improving the flower degree can be derived.

The glaze containing chestnut ash can be applied to molded ceramics to minimize the occurrence of cracks in the manufacture of ceramics, thereby compensating for the shortcomings of the water absorption rate, so that it can be used even at high firing temperatures, and accordingly, its versatility is expanded. There is an effect that can provide a glazed glaze.

In addition, by using glaze containing chestnut ash, the function of porcelain glaze is improved to improve aesthetics, and the components of the glaze are made of natural raw materials that are harmless to the human body. There is an effect that can be done.

As described above, although the embodiments have been described by the limited embodiments and drawings, various modifications and variations are possible from the above description to those of ordinary skill in the art.

Meanwhile, FIG. 3 shows a square coordinate experiment for the addition of white kaolin and silica as sub-materials to a base material composed of chestnut ash, pottery stone, and talc in order to prepare a glaze containing chestnut pine according to an embodiment of the present invention. An example is shown, and in the following description, descriptions of unnecessary embodiments that overlap with the descriptions of FIGS. 1 and 2 will be omitted.

On the other hand, looking at each example for the experiment of the square coordinates shown in Figure 3 in more detail, the combination ratio of the above-described base raw material and sub-material are as shown in Table 2 below.

No Union fee Stone Chestnut ash talc White
kaoline burr One 7.00 2.00 1.00 0.00 0.00 2 5.78 1.65 0.83 0.00 1.74 3 4.92 1.41 0.70 0.00 2.97 4 4.29 1.22 0.61 0.00 3.88 5 3.79 1.08 0.54 0.00 4.58 6 3.40 0.97 0.49 0.00 5.14 7 6.41 1.83 0.92 0.84 0.00 8 5.55 1.59 0.79 0.73 1.34 9 4.76 1.36 0.68 0.62 2.58 10 4.16 1.19 0.59 0.54 3.51 11 3.70 1.06 0.53 0.48 4.24 12 3.33 0.95 0.48 0.43 4.82 13 5.92 1.69 0.85 1.55 0.00 14 5.34 1.53 0.76 1.40 0.97 15 4.60 1.32 0.66 1.20 2.22 16 4.04 1.15 0.58 1.06 3.17 17 3.60 1.03 0.51 0.94 3.91 18 3.25 0.93 0.46 0.85 4.51 19 5.49 1.57 0.78 2.15 0.00 20 5.15 1.47 0.74 2.02 0.62 21 4.46 1.27 0.64 1.75 1.88 22 3.93 1.12 0.56 1.54 2.85 23 3.51 1.00 0.50 1.38 3.60 24 3.18 0.91 0.45 1.25 4.22 25 5.12 1.46 0.73 2.68 0.00 26 4.97 1.42 0.71 2.60 0.30 27 4.32 1.23 0.62 2.26 1.56 28 3.82 1.09 0.55 2.00 2.54 29 3.43 0.98 0.49 1.79 3.31 30 3.11 0.89 0.44 1.62 3.94 31 4.80 1.37 0.69 3.14 0.00 32 4.80 1.37 0.69 3.14 0.00 33 4.19 1.20 0.60 2.74 1.27 34 3.72 1.06 0.53 2.43 2.25 35 3.35 0.96 0.48 2.19 3.03 36 3.04 0.87 0.43 1.99 3.67

As a result of the experiment of the square coordinates, it was confirmed that the 14th experiment example has the most suitable combination ratio in terms of surface smoothness, transparency, and durability, and referring to FIG. 4 based on this, FIG. 4 is according to an embodiment of the present invention. An example of a table showing the combination ratio of the glaze containing chestnut ash is shown.

In the present invention, the combination ratio of the glaze containing chestnut ash is based on the total 100wt% in a solvent (for example, at least one of isopropyl alcohol, ethanol, and distilled water), chestnut ash 10wt% to 20wt%, pottery 48wt% To 58wt%, talc 3wt% to 11wt%, white kaolin 10wt% to 20wt%, and silicate is preferably mixed in a ratio of 7wt% to 13wt%, as shown in 300 of Figure 4, It is preferable that 15.3 wt% of chestnut ash, 53.4 wt% of pottery stone, 7.6 wt% of talc, 14 wt% of white kaolin, and 9.7 wt% of silicate are mixed to prepare a glaze.

That is, the glaze containing chestnut ash prepared in this way enables ceramics to be fired at high temperature by potassium oxide, which is the main component of chestnut ash contained in the glaze, thereby improving the durability of the glaze and using wood ash that has been used in the past. Compared with glaze, it can be expected that the effect of completing ceramics with a remarkably improved flower degree can be expected, and the function of porcelain glaze is improved by using glaze containing chestnut ash to improve aesthetics. Since it is composed of harmless natural raw materials, it has the effect of providing eco-friendly ceramics that are not unreasonable even if users use them for life.

As described above, although the embodiments have been described by the limited embodiments and drawings, various modifications and variations are possible from the above description to those of ordinary skill in the art.

5 shows an example showing a result of manufacturing ceramics by applying a glaze containing chestnut ash to ceramics according to an embodiment of the present invention.

In the following description, a description of unnecessary embodiments overlapping with the descriptions of FIGS. 1 to 4 will be omitted.

In 1000 of FIG. 5, ceramics were molded using white porcelain, and ceramics produced by firing in an oxidizing atmosphere by applying the glaze using chestnut pine as described above, and in 1100 and 1200, ceramics were molded using powdered clay. , Ceramics manufactured by firing in a reducing atmosphere and an oxidizing atmosphere by applying the glaze using chestnut pine as described above are shown.

More specifically, 1000 may be understood as ceramics fired at 1230°C to 1260°C, and 1100 and 1200 are ceramics fired at 1200°C to 1250°C.

In other words, when the glaze containing chestnut ash is applied from the finished porcelain of 1000, 1100 and 1200 of FIG. 5, and then the ceramics are fired, the thermal expansion coefficient is low due to the nature of the composition of chestnut ash containing a large amount of potassium oxide. Therefore, since it is possible to sinter at a high temperature, it was possible to complete ceramics with remarkably improved durability, and also, ceramics with improved aesthetics due to the glossiness imparted to the finished ceramics, even oil level and transparent color, etc. could be manufactured.

In addition, the glaze using chestnut ash as described above has an effect that the components of the glaze are made of natural raw materials that are harmless to the human body, so that the user can suitably use it as a life porcelain.

Although the embodiments have been described by the limited embodiments and drawings as described above, those of ordinary skill in the art will appreciate that various modifications and variations are possible from the above description. The terms “include”, “comprise”, or “have” described above mean that components without a description to the contrary may be included, so other components are not excluded. It should be construed as more inclusive. In addition, the scope of protection of the present invention should be interpreted by the following claims, and all technical ideas within the scope equivalent thereto should be construed as being included in the scope of the present invention.

Claims (5)

In the porcelain manufacturing method using a glaze containing chestnut ash,
A molding step of molding the dough into a shape of ceramics;
After performing the molding step, a rough firing step of heating the molded ceramics at a temperature of 700°C to 1000°C for 30 to 90 minutes;
A trial oiling step of applying glaze to the unglazed ceramics; And
After drying the glazed ceramics, the chaebol are fired at a temperature of 1100°C to 1300°C using at least one of an electric kiln and a gas kiln, and the ceramics are fired in the electric kiln for 30 to 90 minutes. Including; a chaebol firing step of firing and sintering for 30 to 90 minutes in the gas kiln,
The glaze,
Contain chestnut ash, pottery stone and talc as a base material, and further contain kaolin and silica stone as a sub-material,
The glaze has a weight ratio of 1 to 3:6 to 8:0.1 to 2 in a weight ratio of the chestnut ash, the pottery stone and the talc as the base material, and the kaolin and the silica stone as the sub-materials, To be added in a weight ratio of 10 to 60 wt% of the total weight of the base material,
The chaebol firing step,
When the ceramic is fired in an oxidizing atmosphere, it is fired at a temperature of 1210°C to 1280°C, but outside air is injected to fire the chaebol,
When the ceramics are fired in a reducing atmosphere, the ceramics are fired at a temperature of 1150°C to 1270°C,
The oiling step,
In applying the glaze to the porcelain, the glaze is applied to the porcelain by using any one of a dipping oil, a spray oil, a brush oil, and a spill oil,
The forming step,
Porcelain manufacturing method using a glaze containing chestnut ash, characterized in that the clay is molded into the shape of the porcelain by using at least one of white porcelain and bunchong as a raw material for the dough. delete delete delete delete

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