Thin ceramic and its firing process

Abstract

The application belongs to the field of thin ceramic production and specifically discloses a kind of thin ceramic and its firing process, the thin ceramic is made of the following weight parts of raw materials;a. blank: kaolin 100 parts, mullite 30-50 parts, manganese dolomite 20-30 parts, silicon dioxide 15-25 parts, calcium oxide 10-20 parts, zinc oxide 8-16 parts, zirconium dioxide 5-10 parts, gallium oxide 3-6 parts;b. glaze: bauxite, 10-20 parts, barium carbonate 8-15 parts, tin oxide, 5-10 parts lanthanum oxide 4-8 parts, yttrium oxide, 3-6 parts. The raw materials of the thin ceramic are easy to obtain, the preparation method is simple, the wall is thin, the hardness is high, and the impact resistance is good.

Description

A thin-walled ceramic and its firing process Technical Field

[0001] This invention belongs to the field of thin-walled ceramic production, and specifically discloses a thin-walled ceramic and its firing process. Background Technology

[0002] Thin-walled ceramics, also known as "eggshell porcelain" or "thin-walled porcelain," are among the most renowned special craft products of traditional porcelain varieties from Jingdezhen, Jiangxi Province, and Dapu County, Guangdong Province. They are characterized by their eggshell-thin, translucent bodies. Common products include vases, lampshades, tea sets, and pen holders; their lightness, elegance, thinness, and transparency make them highly popular. However, due to their thinness, thin-walled ceramics have low strength, making them prone to breakage when used in everyday items such as tea sets, significantly impacting their practical value. CN201911067481.7 discloses a shatter-resistant, prestressed reinforced thin-walled ceramic and its preparation method, comprising a thin-walled ceramic body and a coating applied to the surface of the body; the coating consists of a bottom coating and a top coating, forming a gradient coating with decreasing thermal expansion coefficient and increasing elastic modulus from the bottom to the surface of the body. By introducing a double layer of compressive stress onto the surface of the thin-walled ceramic body, the tensile stress generated when the ceramic body fractures under external loads is offset, thereby significantly improving the strength of the thin-walled ceramic, preventing it from being impacted, achieving a drop-resistant effect, enhancing its service life, and effectively improving safety in actual use. However, the above invention requires two coatings, the components of which are costly, requiring the addition of agate crystals, and the preparation process is complex, resulting in expensive thin-walled ceramic products that are not conducive to widespread adoption. Summary of the Invention

[0003] To address the aforementioned problems, this invention discloses a thin-walled ceramic and its firing process.

[0004] This invention includes the following technical solutions:

[0005] A thin-walled ceramic, made from the following raw materials in parts by weight;

[0006] a. Raw material:

[0007]

[0008] b. Glaze:

[0009]

[0010]

[0011] Preferably, the above-mentioned thin-walled ceramic is made from the following raw materials in parts by weight:

[0012] a. Raw material:

[0013]

[0014] b. Glaze:

[0015]

[0016] Furthermore, the firing process of the aforementioned thin-walled ceramic includes the following steps:

[0017] 1) The blank is made into a ceramic blank;

[0018] 2) Apply the glaze to the ceramic body.

[0019] 3) The thin-walled ceramic is obtained by firing.

[0020] Furthermore, in the firing process of the aforementioned thin-walled ceramic, step 1) includes the following steps:

[0021] Step a: After mixing the raw materials in the blank according to the formula, crush them, ball mill them, and add 0.5-0.7 times the mass of deionized water to make mud. Add ceramic reinforcing agent to the mud.

[0022] Step b: Blank preparation. Using the slurry obtained in step a, a porcelain blank is prepared using a slip casting process. The thickness of the porcelain blank is 0.6-0.9 mm. Before slip casting, a layer of talcum powder is applied to the mold cavity used for slip casting. After slip casting, cold air is continuously injected into the slip casting port to rapidly cool the blank until it is formed and forms a gap of 0.1-0.2 mm with the mold cavity. The wind speed when injecting cold air is 3-4 m / s, and the air injection port is aligned with the position where the blank and the mold cavity meet.

[0023] Step c, trimming: Place the ceramic blank on a trimming machine for trimming until the surface thickness is 0.4-0.6mm.

[0024] Furthermore, in the firing process of the aforementioned thin-walled ceramic, the ceramic reinforcing agent is a mixture of sodium tripolyphosphate, vinyl acetate, and hydroxyethyl starch.

[0025] Preferably, in the firing process of the above-mentioned thin-walled ceramic, the components are: sodium tripolyphosphate 15-20 parts, vinyl acetate 5-10 parts, and hydroxyethyl starch 3-6 parts by weight.

[0026] Furthermore, in the firing process of the aforementioned thin-walled ceramic, step 2) includes the following steps:

[0027] I. After mixing the glaze slurry according to the formula, crush it, ball mill it, and pass it through an 800-mesh standard sieve. The sieve residue should be controlled at 0.1-0.2%. Add deionized water to make the moisture content of the glaze slurry between 35-41%. Remove iron three times with an iron remover with a magnetic field strength of 10,000 gauss. Let the glaze material age for 3-6 days.

[0028] II. Apply the glaze to the ceramic body using a spray glazing process, with a glaze layer thickness of 0.05-0.1 mm.

[0029] Furthermore, in the above-mentioned firing process of thin-walled ceramics, step 3) includes the following steps: placing the ceramic blank after applying glaze into a kiln for firing, wherein the firing temperature is 1950-2050℃, the firing time is 6-12h, and a thin-walled ceramic with an overall thickness of 0.25-0.35mm is obtained after one firing.

[0030] Furthermore, the firing process of the aforementioned thin-walled ceramic consists of the following steps:

[0031] 1) The raw material is made into a ceramic blank:

[0032] Step a: After mixing the raw materials in the blank according to the formula, crush them, ball mill them, and add 0.5-0.7 times the mass of deionized water to make mud. Add ceramic reinforcing agent to the mud.

[0033] Step b: Blank preparation. Using the slurry obtained in step a, a porcelain blank is prepared using a slip casting process. The thickness of the porcelain blank is 0.5-0.7 mm. Before slip casting, a layer of talcum powder is applied to the mold cavity used for slip casting. After slip casting, cold air is continuously injected into the slip casting port to rapidly cool the blank until it is formed and forms a gap of 0.1-0.2 mm with the mold cavity. The wind speed when injecting cold air is 3-4 m / s, and the air injection port is aligned with the position where the blank and the mold cavity meet.

[0034] Step c, trimming: Place the ceramic blank on a trimming machine for trimming until the surface thickness is 0.3-0.5mm.

[0035] 2) Apply the glaze to the ceramic body:

[0036] I. After mixing the glaze slurry according to the formula, crush it, ball mill it, and pass it through an 800-mesh standard sieve. The sieve residue should be controlled at 0.1-0.2%. Add deionized water to make the moisture content of the glaze slurry between 35-41%. Remove iron three times with an iron remover with a magnetic field strength of 10,000 gauss. Let the glaze material age for 3-6 days.

[0037] II. Apply the glaze to the ceramic body using a spray glazing process, with a glaze layer thickness of 0.05-0.1 mm;

[0038] 3) The thin-walled ceramic is obtained by firing:

[0039] The glazed ceramic body is placed in a kiln and fired at a temperature of 1950-2050℃ for 6-12 hours. Then, it is cooled to 650-700℃ and held for 4-6 hours to obtain a thin-walled ceramic body with an overall thickness of 0.25-0.35 mm.

[0040] Compared with existing technologies, this invention has the following advantages: The invention uses kaolin, mullite, and manganese dolomite as the base material in the thin-walled ceramic body, resulting in good workability and molding performance. Furthermore, a combination of silicon dioxide, zirconium dioxide, and gallium oxide is added to enhance its hardness and thermal stability. Additionally, a ceramic reinforcing agent composed of sodium tripolyphosphate, vinyl acetate, and hydroxyethyl starch is added, significantly improving the flexural strength and impact resistance of the ceramic product. These combined advantages enable the production of thinner and more transparent ceramic bodies. Combined with the high-hardness glaze disclosed in this invention, ultra-thin, impact-resistant thin-walled ceramics can be prepared. Moreover, the firing process of this invention is simple, requiring only one firing, resulting in low production costs and promising application prospects. Attached Figure Description

[0041] Figure 1 shows the transverse comparative performance test of thin-walled ceramics, impact strength (center position), J / m. 2 ;

[0042] Figure 2 shows the transverse comparative performance test of thin-walled ceramics, including flexural strength (MPa);

[0043] Figure 3 shows the transverse comparative performance test of thin-walled ceramics, including thermal stability (number of times it does not crack). Detailed Implementation

[0044] A thin-walled ceramic, made from the following raw materials in parts by weight:

[0045] a. Raw material:

[0046]

[0047] b. Glaze:

[0048]

[0049] The firing process of the above-mentioned thin-walled ceramics consists of the following steps:

[0050] 1) The raw material is made into a ceramic blank:

[0051] Step a: After mixing the raw materials in the blank according to the formula, crush them, ball mill them, and add 0.5-0.7 times the mass of deionized water to make mud. Add ceramic reinforcing agent to the mud.

[0052] Step b: Blank preparation. Using the slurry obtained in step a, a porcelain blank is prepared using a slip casting process. The thickness of the porcelain blank is 0.5-0.7 mm. Before slip casting, a layer of talcum powder is applied to the mold cavity used for slip casting. After slip casting, cold air is continuously injected into the slip casting port to rapidly cool the blank until it is formed and forms a gap of 0.1-0.2 mm with the mold cavity. The wind speed when injecting cold air is 3-4 m / s, and the air injection port is aligned with the position where the blank and the mold cavity meet.

[0053] Step c, trimming: Place the ceramic blank on a trimming machine for trimming until the surface thickness is 0.3-0.5mm.

[0054] 2) Apply the glaze to the ceramic body:

[0055] I. After mixing the glaze slurry according to the formula, crush it, ball mill it, and pass it through an 800-mesh standard sieve. The sieve residue should be controlled at 0.1-0.2%. Add deionized water to make the moisture content of the glaze slurry between 35-41%. Remove iron three times with an iron remover with a magnetic field strength of 10,000 gauss. Let the glaze material age for 3-6 days.

[0056] 1. Apply the glaze to the ceramic body using a spray glazing process, with a glaze layer thickness of 0.05-0.1 mm;

[0057] 3) The thin-walled ceramic is obtained by firing:

[0058] The glazed ceramic body is placed in a kiln and fired at a temperature of 1950-2050℃ for 6-12 hours. Then, it is cooled to 650-700℃ and held for 4-6 hours to obtain a thin-walled ceramic body with an overall thickness of 0.25-0.35 mm.

[0059] The ceramic reinforcing agent is a mixture of sodium tripolyphosphate, vinyl acetate and hydroxyethyl starch; by mass parts, sodium tripolyphosphate is 15-20 parts, vinyl acetate is 5-10 parts and hydroxyethyl starch is 3-6 parts.

[0060] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0061] The kaolin was purchased from Jiangxi Tuoan New Materials Co., Ltd. It is calcined kaolin, 1250-8000 mesh, with a purity of 99%.

[0062] The mullite was purchased from Henan Hongtai Kiln Refractory Materials Co., Ltd., and is fused mullite.

[0063] The manganese dolomite was purchased from Haicheng Mileda Mineral Products Sales Co., Ltd.

[0064] Example 1

[0065] A thin-walled ceramic, made from the following raw materials in parts by weight:

[0066] a. Raw material:

[0067]

[0068] b. Glaze:

[0069]

[0070] The firing process of the above-mentioned thin-walled ceramics consists of the following steps:

[0071] 1) The raw material is made into a ceramic blank:

[0072] Step a: After mixing the raw materials in the blank according to the formula, crush them, ball mill them, and add 0.5-0.7 times the mass of deionized water to make mud. Add ceramic reinforcing agent to the mud.

[0073] Step b: Blank preparation. Using the slurry obtained in step a, a porcelain blank is prepared using a slip casting process. The thickness of the porcelain blank is 0.5-0.7 mm. Before slip casting, a layer of talcum powder is applied to the mold cavity used for slip casting. After slip casting, cold air is continuously injected into the slip casting port to rapidly cool the blank until it is formed and forms a gap of 0.1-0.2 mm with the mold cavity. The wind speed when injecting cold air is 3-4 m / s, and the air injection port is aligned with the position where the blank and the mold cavity meet.

[0074] Step c, trimming: Place the ceramic blank on a trimming machine for trimming until the surface thickness is 0.3-0.5mm.

[0075] 2) Apply the glaze to the ceramic body:

[0076] I. After mixing the glaze slurry according to the formula, crush it, ball mill it, and pass it through an 800-mesh standard sieve. The sieve residue should be controlled at 0.1-0.2%. Add deionized water to make the moisture content of the glaze slurry between 35-41%. Remove iron three times with an iron remover with a magnetic field strength of 10,000 gauss. Let the glaze material age for 3-6 days.

[0077] 1. Apply the glaze to the ceramic body using a spray glazing process, with a glaze layer thickness of 0.05-0.1 mm;

[0078] 3) The thin-walled ceramic is obtained by firing:

[0079] The glazed ceramic body is placed in a kiln and fired at a temperature of 1950-2050℃ for 6-12 hours. Then, it is cooled to 650-700℃ and held for 4-6 hours to obtain a thin-walled ceramic body with an overall thickness of 0.25-0.35 mm.

[0080] The ceramic reinforcing agent is a mixture of sodium tripolyphosphate, vinyl acetate and hydroxyethyl starch; by mass, it consists of 15 parts sodium tripolyphosphate, 5 parts vinyl acetate and 3 parts hydroxyethyl starch.

[0081] Example 2

[0082] A thin-walled ceramic, made from the following raw materials in parts by weight:

[0083] a. Raw material:

[0084]

[0085] b. Glaze:

[0086]

[0087] The firing process of the above-mentioned thin-walled ceramics consists of the following steps:

[0088] 1) The raw material is made into a ceramic blank:

[0089] Step a: After mixing the raw materials in the blank according to the formula, crush them, ball mill them, and add 0.5-0.7 times the mass of deionized water to make mud. Add ceramic reinforcing agent to the mud.

[0090] Step b: Blank preparation. Using the slurry obtained in step a, a porcelain blank is prepared using a slip casting process. The thickness of the porcelain blank is 0.5-0.7 mm. Before slip casting, a layer of talcum powder is applied to the mold cavity used for slip casting. After slip casting, cold air is continuously injected into the slip casting port to rapidly cool the blank until it is formed and forms a gap of 0.1-0.2 mm with the mold cavity. The wind speed when injecting cold air is 3-4 m / s, and the air injection port is aligned with the position where the blank and the mold cavity meet.

[0091] Step c, trimming: Place the ceramic blank on a trimming machine for trimming until the surface thickness is 0.3-0.5mm.

[0092] 2) Apply the glaze to the ceramic body:

[0093] I. After mixing the glaze slurry according to the formula, crush it, ball mill it, and pass it through an 800-mesh standard sieve. The sieve residue should be controlled at 0.1-0.2%. Add deionized water to make the moisture content of the glaze slurry between 35-41%. Remove iron three times with an iron remover with a magnetic field strength of 10,000 gauss. Let the glaze material age for 3-6 days.

[0094] 1. Apply the glaze to the ceramic body using a spray glazing process, with a glaze layer thickness of 0.05-0.1 mm;

[0095] 3) The thin-walled ceramic is obtained by firing:

[0096] The glazed ceramic body is placed in a kiln and fired at a temperature of 1950-2050℃ for 6-12 hours. Then, it is cooled to 650-700℃ and held for 4-6 hours to obtain a thin-walled ceramic body with an overall thickness of 0.25-0.35 mm.

[0097] The ceramic reinforcing agent is a mixture of sodium tripolyphosphate, vinyl acetate and hydroxyethyl starch; by mass, it comprises 18 parts sodium tripolyphosphate, 8 parts vinyl acetate and 4.5 parts hydroxyethyl starch.

[0098] Example 3

[0099] A thin-walled ceramic, made from the following raw materials in parts by weight:

[0100] a. Raw material:

[0101]

[0102] b. Glaze:

[0103]

[0104]

[0105] The firing process of the above-mentioned thin-walled ceramics consists of the following steps:

[0106] 1) The raw material is made into a ceramic blank:

[0107] Step a: After mixing the raw materials in the blank according to the formula, crush them, ball mill them, and add 0.5-0.7 times the mass of deionized water to make mud. Add ceramic reinforcing agent to the mud.

[0108] Step b: Blank preparation. Using the slurry obtained in step a, a porcelain blank is prepared using a slip casting process. The thickness of the porcelain blank is 0.5-0.7 mm. Before slip casting, a layer of talcum powder is applied to the mold cavity used for slip casting. After slip casting, cold air is continuously injected into the slip casting port to rapidly cool the blank until it is formed and forms a gap of 0.1-0.2 mm with the mold cavity. The wind speed when injecting cold air is 3-4 m / s, and the air injection port is aligned with the position where the blank and the mold cavity meet.

[0109] Step c, trimming: Place the ceramic blank on a trimming machine for trimming until the surface thickness is 0.3-0.5mm.

[0110] 2) Apply the glaze to the ceramic body:

[0111] I. After mixing the glaze slurry according to the formula, crush it, ball mill it, and pass it through an 800-mesh standard sieve. The sieve residue should be controlled at 0.1-0.2%. Add deionized water to make the moisture content of the glaze slurry between 35-41%. Remove iron three times with an iron remover with a magnetic field strength of 10,000 gauss. Let the glaze material age for 3-6 days.

[0112] 1. Apply the glaze to the ceramic body using a spray glazing process, with a glaze layer thickness of 0.05-0.1 mm;

[0113] 3) The thin-walled ceramic is obtained by firing:

[0114] The glazed ceramic body is placed in a kiln and fired at a temperature of 1950-2050℃ for 6-12 hours. Then, it is cooled to 650-700℃ and held for 4-6 hours to obtain a thin-walled ceramic body with an overall thickness of 0.25-0.35 mm.

[0115] The ceramic reinforcing agent is a mixture of sodium tripolyphosphate, vinyl acetate and hydroxyethyl starch; by mass, it consists of 20 parts sodium tripolyphosphate, 10 parts vinyl acetate and 6 parts hydroxyethyl starch.

[0116] Comparative Example 1

[0117] It does not contain ceramic reinforcing agents, and is otherwise the same as in Example 2.

[0118] Comparative Example 2

[0119] The ceramic reinforcing agent consists only of 18 parts sodium tripolyphosphate and 8 parts vinyl acetate, excluding hydroxyethyl starch, and is otherwise the same as in Example 2.

[0120] Comparative Example 3

[0121] Mullite was replaced with kaolin, and the rest was the same as in Example 2.

[0122] Comparative Example 4

[0123] Mullite and manganese dolomite were replaced with kaolin, and the rest was the same as in Example 2.

[0124] Comparative Example 5

[0125] It does not contain zirconium dioxide and gallium oxide, and is otherwise the same as in Example 2.

[0126] Comparative Example 6

[0127] Ordinary thin-walled ceramics were purchased commercially.

[0128] Test Example 1

[0129] The thin-walled ceramic materials obtained in Examples 1-3 and Comparative Examples 1-6 were tested. The bending strength was tested using the three-point method. The thermal stability test method was to heat the ceramic profile to 1500℃ and then air-cool it to room temperature to check for cracks or fractures. The impact resistance test was conducted according to GB / T38494-2020 (Test Method for Impact Resistance of Ceramic Ware). The results are shown in Table 1 and Figures 1, 2 and 3.

[0130] Table 1. Lateral comparative performance test of thin-walled ceramics.

[0131]

[0132] As can be seen from the above data, the present invention uses kaolin, mullite and manganese dolomite as the base material in the thin-walled ceramic blank, which makes the workability and molding performance of the base material good. Furthermore, a combination of silicon dioxide, zirconium dioxide and gallium oxide is added to enhance its hardness and thermal stability. In addition, a ceramic reinforcing agent composed of sodium tripolyphosphate, vinyl acetate and hydroxyethyl starch is added, which greatly improves the bending strength and impact resistance of the ceramic products.

[0133] The above embodiments are a limited number of preferred implementations of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention.

Claims

1. A thin-walled ceramic, characterized in that, It is made from the following raw materials in parts by weight: a. Raw material: 100 parts kaolin, 30-50 parts mullite, 20-30 parts manganese dolomite, 15-25 parts silicon dioxide, 10-20 parts calcium oxide, 8-16 parts zinc oxide, 5-10 parts zirconium dioxide, 3-6 parts gallium oxide; b. Glaze: 10-20 parts bauxite, 8-15 parts barium carbonate, 5-10 parts tin oxide, 4-8 parts lanthanum oxide, 3-6 parts yttrium oxide; c. Ceramic reinforcing agent: 15-20 parts sodium tripolyphosphate, 5-10 parts vinyl acetate, and 3-6 parts hydroxyethyl starch; the ceramic reinforcing agent and the raw material are used to prepare a ceramic green body.

2. The thin-walled ceramic according to claim 1, characterized in that, It is made from the following raw materials in parts by weight: a. Raw material: 100 parts kaolin, 40 parts mullite, 25 parts manganese dolomite, 20 parts silicon dioxide, 15 parts calcium oxide, 12 parts zinc oxide, 8 parts zirconium dioxide, and 4 parts gallium oxide; b. Glaze: 15 parts bauxite, 10 parts barium carbonate, 7 parts tin oxide, 6 parts lanthanum oxide, and 5 parts yttrium oxide; c. Ceramic reinforcing agent: 18 parts sodium tripolyphosphate, 8 parts vinyl acetate, and 4.5 parts hydroxyethyl starch; the ceramic reinforcing agent and the raw material are used to prepare a ceramic body.

3. A firing process for thin-walled ceramics as described in claim 1 or 2, characterized in that, Includes the following steps: 1) The raw material and the ceramic reinforcing agent are used to form a ceramic green body; 2) Apply the glaze to the ceramic body, 3) Fire to obtain the thin-walled ceramic.

4. The firing process for thin-walled ceramics according to claim 3, characterized in that, Step 1) includes the following steps: Step a) After mixing the raw materials in the blank according to the formula, crush them, ball mill them, and add 0.5-0.7 times the mass of deionized water to make mud. Add ceramic reinforcing agent to the mud. Step b) Make the blank. Using the mud obtained in step a, use the slip casting process to prepare the porcelain blank. The thickness of the porcelain blank is 0.6-0.9mm. Before the blank is slip-cast, apply a layer of talcum powder to the mold cavity used for slip casting. After the blank is slip-cast, use cold air to continuously inject cold air into the slip injection port to rapidly cool the blank until the blank is formed and forms a gap of 0.1-0.2mm with the mold cavity. The wind speed when injecting cold air is 3-4m / s. The air injection port is aimed at the position where the blank and the mold cavity are joined. Step c) Trim the blank. Place the ceramic blank on the trimming machine for trimming. Trim the blank to a thickness of 0.4-0.6mm.

5. The firing process for thin-walled ceramics according to claim 3, characterized in that, Step 2) includes the following steps: a. After mixing the glaze according to the formula, crush it, ball mill it, and pass it through an 800-mesh standard sieve, with the sieve residue controlled at 0.1-0.2%; add deionized water to make the glaze slurry moisture content between 35-41%, and remove iron three times with an iron remover with a magnetic field strength of 10,000 gauss; age the glaze slurry for 3-6 days; b. Apply the glaze slurry to the ceramic body using a spray glazing process, with a glaze layer thickness of 0.05-0.1 mm.

6. The firing process for thin-walled ceramics according to claim 3, characterized in that, Step 3) includes the following steps: placing the ceramic blank after applying glaze into a kiln for firing, the firing temperature being 1950-2050℃, the firing time being 6-12h, and obtaining a thin-bodied ceramic with an overall thickness of 0.25-0.35mm after one firing.

7. The firing process for thin-walled ceramics according to claim 3, characterized in that, The process consists of the following steps: 1) Making the blank into a ceramic body: Step a) After mixing the raw materials in the blank according to the formula, crush them, ball mill them, and add 0.5-0.7 times the mass of deionized water to make slurry. Add ceramic reinforcing agent to the slurry. Step b) Making the blank: Using the slurry obtained in step a, use the slip casting process to prepare the porcelain body. The thickness of the porcelain body is 0.5-0.7 mm. Before the body is slip-cast, apply a layer of talcum powder to the mold cavity used for slip casting. After the body is slip-cast, continuously inject cold air into the slip casting port to rapidly cool the body until it is formed and forms with the inner cavity of the mold. A gap of 0.1-0.2mm is made, and the wind speed when injecting cold air is 3-4m / s. The air injection port is aligned with the position where the blank and the mold cavity meet. Step c, trimming: Place the ceramic blank on a trimming machine for trimming until the thickness is 0.3-0.5mm. 2) Apply the glaze to the ceramic blank: a. Mix the glaze according to the formula, then crush, ball mill, and pass through an 800-mesh standard sieve. The sieve residue is controlled at 0.1-0.2%. Add deionized water to make the glaze slurry moisture content between 35-41%. Remove iron three times with an iron remover with a magnetic field strength of 10,000 gauss. Let the glaze slurry age for 3-6 days. b. 3) Apply glaze slurry to the ceramic body using a spray glazing process, with a glaze layer thickness of 0.05-0.1 mm; 4) Fire the ceramic body to obtain the thin-bodied ceramic: Place the glazed ceramic body into a kiln and fire it to form the shape. The firing temperature is 1950-2050℃, the firing time is 6-12 h, and then the temperature is lowered to 650-700℃ and held for 4-6 h to obtain a thin-bodied ceramic with an overall thickness of 0.25-0.35 mm.

Images