CN111423122A - Manufacturing process of ceramic double-layer crack glaze and inner glaze layer thereof - Google Patents
Manufacturing process of ceramic double-layer crack glaze and inner glaze layer thereof Download PDFInfo
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Abstract
The invention provides a ceramic double-layer crack glaze, which comprises an inner glaze layer and an outer glaze layer, wherein the inner glaze layer with a larger thermal expansion coefficient and smaller high-temperature fluidity is glazed on a ceramic blank by adopting a twice glazing mode, then the outer glaze layer with a smaller thermal expansion coefficient and larger high-temperature fluidity is glazed, the inner glaze layer generates cracks which are staggered and staggered in the high-temperature firing process, and the outer glaze layer is distributed on the surface of the inner glaze layer to form the outer glaze layer which has no cracks and has certain wear resistance and water resistance, so that the inner crack glaze is protected, and the ceramic integral body forms an outer protective glaze layer for protecting. The ceramic double-layer crack glaze provided by the invention can be applied to the surface of a common ceramic blank to form crack glaze ceramic with certain wear resistance and water resistance, and can be used for manufacturing daily ceramic tableware, ceramic plates, ceramic tiles, ceramic crafts and the like with crack grains.
Description
The application is a divisional application of an invention patent application named as 'a ceramic double-layer crack glaze and a manufacturing process thereof', and the application date of the original application is 2017-11-02, and the application number is 201711061914.9.
Technical Field
The invention belongs to the technical field of ceramic manufacture, and particularly relates to a manufacturing process of a ceramic double-layer crack glaze and an inner glaze layer thereof.
Background
The cracking of the glaze is originally a defect in firing, but when the glaze of certain products has very special cracking, uniform and clear lines and is fully distributed on the surface of the sleeve, a special aesthetic feeling is given to people, so that people are inspired from the cracking, the experience is summarized, the cracks of the sleeve surface are caused consciously, and the cracked glaze is gradually created. The porcelain crackle glaze surface is distributed with a plurality of small crackles, which have sparse, dense, thick, thin, long, short, curved, straight lines shaped like crazing, crab claw or ice crack.
Disclosure of Invention
Based on the prior art, the invention aims to provide a manufacturing process of a ceramic double-layer crack glaze, which has uniform and dense crack textures, smooth and bright surface and fine and mild hand feeling.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows: the ceramic double-layer crack glaze comprises an inner glaze layer and an outer glaze layer, wherein the inner glaze layer comprises the following raw materials in parts by weight: 20-30 parts of quartz, 10-15 parts of kaolin, 10-15 parts of forsterite, 7-12 parts of zircon, 7-15 parts of barium titanate, 7-12 parts of sodium silicate, 7-12 parts of calcium silicate, 7-12 parts of silicon oxide, 6-10 parts of talc, 5-8 parts of alumina, 5-8 parts of zinc oxide, 4-8 parts of silicon nitride, 1-3 parts of ascharite and 1-3 parts of spodumene; the outer glaze layer comprises the following raw materials in parts by weight: 20-30 parts of quartz, 23-30 parts of albite, 15-20 parts of sodium silicate, 7-10 parts of kaolin, 10-15 parts of calcium silicate, 6-10 parts of silicon oxide, 5-8 parts of aluminum oxide, 6-10 parts of talc, 6-10 parts of calcium silicate, 3-5 parts of zircon, 3-5 parts of gypsum and 1-1.5 parts of borax.
Preferably, the color former is at least one of iron oxide, manganese oxide, copper oxide, cobalt oxide, nickel oxide, cadmium sulfide and cadmium telluride.
The ceramic double-layer crack glaze provided by the invention has the advantages that because the melting point of part of components in the raw materials is low, in the process of firing ceramics at high temperature, the molten low-melting-point raw materials enable the glaze layer to be in a molten state with fluidity, wherein the molten fluidity of the inner glaze layer is relatively low, the thermal expansion coefficient is relatively high, the molten fluidity of the outer glaze layer is relatively high, and the thermal expansion coefficient is relatively low.
The invention also provides a process for preparing the ceramic double-layer crack glaze, which comprises the following steps:
step 1, weighing the raw materials according to the weight parts for later use;
step 2, obtaining inner glaze layer glaze water and outer glaze layer glaze water respectively by adopting the following method: mixing the raw materials, adding water accounting for 1.5-2 times of the total weight of the raw materials, heating to 50-60 ℃, stirring at the speed of 800-850 r/min for 20-30 minutes under the vacuum degree of 0.01-0.1 MPa, stirring at the speed of 80-120 r/min for 40-80 minutes, and then adjusting the water content of the raw materials to 55-65% to obtain inner-layer glaze water and outer-layer glaze water;
and step 3: carrying out primary glazing on the ceramic blank obtained by shaping by adopting inner layer glaze water, airing, and carrying out secondary glazing by adopting outer layer glaze water, wherein the thickness of the primary glazing is 0.5-1 mm, the thickness of the secondary glazing is 0.7-1.2 mm, after the secondary glazing, carrying out heat preservation firing on the glazed blank at 150-180 ℃ for 30-50 minutes, quenching to obtain quenching line ceramic after the heat preservation is finished, then firing the quenching line ceramic at 1250-1300 ℃ for 3-8 hours, cooling to obtain crack glaze ceramic, and the surface crack glaze layer of the crack glaze ceramic is the ceramic double-layer crack glaze.
The process for manufacturing the double-layer crack glaze provided by the invention comprises the steps of sequentially applying the inner layer glaze and the outer layer glaze on the surface of a ceramic blank by adopting a twice glazing method, then carrying out quenching after heat preservation at 150-180 ℃, enabling the inner glaze layer to generate certain cracks, and then firing at 1250-1300 ℃ to obtain a ceramic product.
Preferably, in the step 2, the water content of the inner layer glaze water is adjusted to be 55-58%, and the water content of the outer layer glaze water is adjusted to be 62-65%.
Preferably, the thickness of the primary glazing in the step 3 is 0.7 +/-0.05 mm, and the thickness of the secondary glazing in the step 3 is 1 +/-0.05 mm.
As another preference, the quenching step in the step 3 is specifically operated as follows: and after the heat preservation firing is finished under the condition of 150-180 ℃, quickly immersing the ceramic obtained by the heat preservation firing into normal-temperature clean water within 10 seconds, keeping for 5-8 seconds, and taking out to obtain the quenching line ceramic, wherein the height of the water surface higher than the ceramic is more than 30mm in the quenching process.
Advantageous effects
The invention provides a ceramic double-layer crack glaze, which adopts a twice glazing mode, an inner layer glaze with larger thermal expansion coefficient and smaller high-temperature fluidity is glazed on a ceramic blank, then an outer layer glaze with smaller thermal expansion coefficient and larger high-temperature fluidity is glazed, the inner layer glaze generates cracks which are alternate and staggered in the high-temperature firing process of the two glazes, the outer layer glaze is distributed on the surface of the inner layer glaze and forms an outer glaze layer without cracks and with certain wear resistance and water resistance, and the outer layer glaze is used for protecting the inner layer crack glaze and forms an outer layer protective glaze for protecting the whole ceramic.
The ceramic double-layer crack glaze provided by the invention can be applied to the surface of a common ceramic blank to form crack glaze ceramic with certain wear resistance and water resistance, and can be used for manufacturing daily ceramic tableware, ceramic plates, ceramic tiles, ceramic crafts and the like with crack grains.
Detailed Description
The present invention will be described in further detail with reference to specific examples.
Example 1
The embodiment provides a ceramic double-layer crack glaze, which comprises an inner glaze layer and an outer glaze layer, wherein the inner glaze layer comprises the following raw materials in parts by weight: 20 parts of quartz, 10 parts of kaolin, 10 parts of forsterite, 7 parts of zircon, 7 parts of barium titanate, 7 parts of sodium silicate, 7 parts of calcium silicate, 7 parts of silicon oxide, 6 parts of talc, 5 parts of aluminum oxide, 5 parts of zinc oxide, 4 parts of silicon nitride, 1 part of ascharite and 1 part of spodumene; the outer glaze layer comprises the following raw materials in parts by weight: 20 parts of quartz, 23 parts of albite, 15 parts of sodium silicate, 7 parts of kaolin, 10 parts of calcium silicate, 6 parts of silicon oxide, 5 parts of alumina, 6 parts of talc, 6 parts of calcium silicate, 3 parts of zircon, 3 parts of gypsum, 1 part of borax and 3 parts of a coloring agent cobalt oxide.
The embodiment also provides a process for manufacturing the ceramic double-layer crack glaze, which comprises the following steps:
step 1, weighing the raw materials according to the weight parts for later use;
step 2, obtaining inner glaze layer glaze water and outer glaze layer glaze water respectively by adopting the following method: mixing the raw materials, adding water accounting for 1.5 times of the total weight of the raw materials, heating to 50 ℃, stirring at the speed of 800r/min for 30 minutes under the vacuum degree of 0.1MPa, stirring at the speed of 120r/min for 40 minutes, and then adjusting the water content of the raw materials to obtain inner-layer glaze water and outer-layer glaze water, wherein the water content of the inner-layer glaze water is adjusted to be 55-56%, and the water content of the outer-layer glaze water is adjusted to be 62-63%;
and step 3: carrying out primary glazing on the ceramic blank obtained by shaping by adopting inner layer glaze water, carrying out secondary glazing by adopting outer layer glaze water after drying, wherein the thickness of the primary glazing is 0.6 +/-0.05 mm, the thickness of the secondary glazing is 1.1 +/-0.05 mm, after the secondary glazing, carrying out heat preservation firing on the glazed blank at 150 ℃ for 50 minutes, quenching after the heat preservation is finished to obtain quenching line ceramic, then firing the quenching line ceramic at 1250 ℃ for 8 hours, and cooling to obtain crack glaze ceramic, wherein the surface crack glaze layer of the crack glaze ceramic is the ceramic double-layer crack glaze.
Example 2
The embodiment provides a ceramic double-layer crack glaze, which comprises an inner glaze layer and an outer glaze layer, wherein the inner glaze layer comprises the following raw materials in parts by weight: 23 parts of quartz, 11 parts of kaolin, 12 parts of forsterite, 8 parts of zircon, 9 parts of barium titanate, 8 parts of sodium silicate, 9 parts of calcium silicate, 8 parts of silicon oxide, 7 parts of talc, 8 parts of aluminum oxide, 5 parts of zinc oxide, 5 parts of silicon nitride, 2 parts of ascharite and 1 part of spodumene; the outer glaze layer comprises the following raw materials in parts by weight: 22 parts of quartz, 25 parts of albite, 16 parts of sodium silicate, 8 parts of kaolin, 11 parts of calcium silicate, 6 parts of silicon oxide, 5 parts of aluminum oxide, 8 parts of talc, 7 parts of calcium silicate, 3 parts of zircon, 4 parts of gypsum, 1 part of borax, 4 parts of coloring agent nickel oxide and 3 parts of cadmium oxide.
The embodiment also provides a process for manufacturing the ceramic double-layer crack glaze, which comprises the following steps:
step 1, weighing the raw materials according to the weight parts for later use;
step 2, obtaining inner glaze layer glaze water and outer glaze layer glaze water respectively by adopting the following method: mixing the raw materials, adding water accounting for 1.5 times of the total weight of the raw materials, heating to 60 ℃, stirring at a speed of 830r/min for 25 minutes under a vacuum degree of 0.07MPa, stirring at a speed of 110r/min for 60 minutes, and then adjusting the water content of the raw materials to obtain inner-layer glaze water and outer-layer glaze water, wherein the water content of the inner-layer glaze water is adjusted to be 56-57%, and the water content of the outer-layer glaze water is adjusted to be 63-65%;
and step 3: carrying out primary glazing on the ceramic blank obtained by shaping by adopting inner layer glaze water, carrying out secondary glazing by adopting outer layer glaze water after drying, wherein the thickness of the primary glazing is 0.7 +/-0.05 mm, the thickness of the secondary glazing is 1 +/-0.05 mm, carrying out heat preservation firing on the glazed blank at 180 ℃ for 30 minutes after the secondary glazing is finished, quenching to obtain quenching line ceramic after the heat preservation is finished, firing the quenching line ceramic at 1300 ℃ for 4 hours, and cooling to obtain the crack glaze ceramic, wherein the crack glaze layer on the surface of the crack glaze ceramic is the ceramic double-layer crack glaze.
Example 3
The embodiment provides a ceramic double-layer crack glaze, which comprises an inner glaze layer and an outer glaze layer, wherein the inner glaze layer comprises the following raw materials in parts by weight: 25 parts of quartz, 12 parts of kaolin, 13 parts of forsterite, 10 parts of zircon, 11 parts of barium titanate, 10 parts of sodium silicate, 10 parts of calcium silicate, 9 parts of silicon oxide, 8 parts of talc, 6 parts of aluminum oxide, 7 parts of zinc oxide, 6 parts of silicon nitride, 2 parts of ascharite and 2 parts of spodumene; the outer glaze layer comprises the following raw materials in parts by weight: 25 parts of quartz, 27 parts of albite, 17 parts of sodium silicate, 8 parts of kaolin, 12 parts of calcium silicate, 8 parts of silicon oxide, 6 parts of alumina, 8 parts of talc, 8 parts of calcium silicate, 4 parts of zircon, 4 parts of gypsum, 1.2 parts of borax, 6 parts of coloring agent cobalt oxide and 4 parts of manganese oxide.
The embodiment also provides a process for manufacturing the ceramic double-layer crack glaze, which comprises the following steps:
step 1, weighing the raw materials according to the weight parts for later use;
step 2, obtaining inner glaze layer glaze water and outer glaze layer glaze water respectively by adopting the following method: mixing the raw materials, adding water accounting for 1.7 times of the total weight of the raw materials, heating to 55 ℃, stirring at a vacuum degree of 0.02MPa for 20 minutes at a speed of 850r/min, then stirring at a speed of 100r/min for 60 minutes, and then adjusting the water content of the raw materials to obtain inner-layer glaze water and outer-layer glaze water, wherein the water content of the inner-layer glaze water is adjusted to be 56-57%, and the water content of the outer-layer glaze water is adjusted to be 62-64%;
and step 3: carrying out primary glazing on the ceramic blank obtained by shaping by adopting inner layer glaze water, airing, and carrying out secondary glazing by adopting outer layer glaze water, wherein the thickness of the primary glazing is 0.7 +/-0.05 mm, the thickness of the secondary glazing is 1 +/-0.05 mm, after the secondary glazing, carrying out heat preservation firing on the glazed blank at 165 ℃ for 45 minutes, quenching after the heat preservation is finished to obtain quenching line ceramic, then firing the quenching line ceramic at 1270 ℃ for 7 hours, and cooling to obtain crack glaze ceramic, wherein the surface crack glaze layer of the crack glaze ceramic is ceramic double-layer crack glaze.
Example 4
The embodiment provides a ceramic double-layer crack glaze, which comprises an inner glaze layer and an outer glaze layer, wherein the inner glaze layer comprises the following raw materials in parts by weight: 27 parts of quartz, 14 parts of kaolin, 13 parts of forsterite, 12 parts of zircon, 13 parts of barium titanate, 11 parts of sodium silicate, 11 parts of calcium silicate, 11 parts of silicon oxide, 9 parts of talc, 8 parts of aluminum oxide, 8 parts of zinc oxide, 7 parts of silicon nitride, 3 parts of ascharite and 3 parts of spodumene; the outer glaze layer comprises the following raw materials in parts by weight: 27 parts of quartz, 28 parts of albite, 20 parts of sodium silicate, 9 parts of kaolin, 13 parts of calcium silicate, 8 parts of silicon oxide, 7 parts of aluminum oxide, 9 parts of talc, 9 parts of calcium silicate, 5 parts of zircon, 4 parts of gypsum, 1.3 parts of borax, 6 parts of coloring agent iron oxide and 6 parts of manganese oxide.
The embodiment also provides a process for manufacturing the ceramic double-layer crack glaze, which comprises the following steps:
step 1, weighing the raw materials according to the weight parts for later use;
step 2, obtaining inner glaze layer glaze water and outer glaze layer glaze water respectively by adopting the following method: mixing the raw materials, adding water accounting for 1.7 times of the total weight of the raw materials, heating to 60 ℃, stirring at the speed of 830r/min for 25 minutes under the vacuum degree of 0.01MPa, then stirring at the speed of 80r/min for 60 minutes, and then adjusting the water content of the raw materials to obtain inner-layer glaze water and outer-layer glaze water, wherein the water content of the inner-layer glaze water is adjusted to be 55-56%, and the water content of the outer-layer glaze water is adjusted to be 62-64%;
and step 3: and carrying out primary glazing on the ceramic blank obtained by shaping by adopting inner-layer glaze water, airing, and carrying out secondary glazing by adopting outer-layer glaze water, wherein the thickness of the primary glazing is 0.7 +/-0.05 mm, the thickness of the secondary glazing is 0.8 +/-0.05 mm, after the secondary glazing, carrying out heat preservation and firing on the glazed blank at 170 ℃ for 45 minutes, quenching to obtain quenching line ceramic after the heat preservation is finished, then firing the quenching line ceramic at 1280 ℃ for 7 hours, and cooling to obtain the crack line ceramic, wherein the surface crack-shaped glaze layer of the crack line ceramic is the ceramic double-layer crack line glaze.
Example 5
The embodiment provides a ceramic double-layer crack glaze, which comprises an inner glaze layer and an outer glaze layer, wherein the inner glaze layer comprises the following raw materials in parts by weight: 30 parts of quartz, 15 parts of kaolin, 15 parts of forsterite, 12 parts of zircon, 15 parts of barium titanate, 12 parts of sodium silicate, 12 parts of calcium silicate, 12 parts of silicon oxide, 10 parts of talc, 8 parts of aluminum oxide, 8 parts of zinc oxide, 8 parts of silicon nitride, 3 parts of ascharite and 3 parts of spodumene; the outer glaze layer comprises the following raw materials in parts by weight: 30 parts of quartz, 30 parts of albite, 20 parts of sodium silicate, 10 parts of kaolin, 15 parts of calcium silicate, 10 parts of silicon oxide, 8 parts of aluminum oxide, 10 parts of talc, 10 parts of calcium silicate, 5 parts of zircon, 5 parts of gypsum, 1.5 parts of borax, 6 parts of cadmium oxide serving as a coloring agent and 9 parts of cadmium telluride.
The embodiment also provides a process for manufacturing the ceramic double-layer crack glaze, which comprises the following steps:
step 1, weighing the raw materials according to the weight parts for later use;
step 2, obtaining inner glaze layer glaze water and outer glaze layer glaze water respectively by adopting the following method: mixing the raw materials, adding water which accounts for 2 times of the total weight of the raw materials, heating to 60 ℃, stirring at a speed of 820r/min for 20 minutes under a vacuum degree of 0.05MPa, stirring at a speed of 80r/min for 80 minutes, and then adjusting the water content of the raw materials to obtain inner-layer glaze water and outer-layer glaze water, wherein the water content of the inner-layer glaze water is adjusted to be 57-58%, and the water content of the outer-layer glaze water is adjusted to be 64-65%;
and step 3: and carrying out primary glazing on the ceramic blank obtained by shaping by adopting inner-layer glaze water, airing, and carrying out secondary glazing by adopting outer-layer glaze water, wherein the thickness of the primary glazing is 0.8 +/-0.05 mm, the thickness of the secondary glazing is 1.1 +/-0.05 mm, after the secondary glazing, carrying out heat preservation and firing on the glazed blank at 165 ℃ for 40 minutes, quenching to obtain quenching line ceramic after the heat preservation is finished, then firing the quenching line ceramic at 1280 ℃ for 5 hours, and cooling to obtain the crack line ceramic, wherein the surface crack-shaped glaze layer of the crack line ceramic is the ceramic double-layer crack line glaze.
The raw materials used in the above examples 1 to 5 are shown in table 1 below:
table 1 raw materials used in examples 1 to 5
| Inner glaze layer raw material | Example 1 | Example 2 | Example 3 | Example 4 | Example 5 |
| Quartz crystal | 20 portions of | 23 portions of | 25 portions of | 27 portions of | 30 portions of |
| Kaolin clay | 10 portions of | 11 portions of | 12 portions of | 14 portions of | 15 portions of |
| Forsterite | 10 portions of | 12 portions of | 13 portions of | 13 portions of | 15 portions of |
| Zircon stone | 7 portions of | 8 portions of | 10 portions of | 12 portions of | 12 portions of |
| Barium titanate | 7 portions of | 9 portions of | 11 portions of | 13 portions of | 15 portions of |
| Sodium silicate | 7 portions of | 8 portions of | 10 portions of | 11 portions of | 12 portions of |
| Calcium silicate | 7 portions of | 9 portions of | 10 portions of | 11 portions of | 12 portions of |
| Silicon oxide | 7 portions of | 8 portions of | 9 portions of | 11 portions of | 12 portions of |
| Talc | 6 portions of | 7 portions of | 8 portions of | 9 portions of | 10 portions of |
| Alumina oxide | 5 portions of | 8 portions of | 8 portions of | 8 portions of | 8 portions of |
| Zinc oxide | 5 portions of | 5 portions of | 7 portions of | 8 portions of | 8 portions of |
| Silicon nitride | 4 portions of | 5 portions of | 6 portions of | 7 portions of | 8 portions of |
| Boronatrocalcite | 1 part of | 2 portions of | 2 portions of | 3 portions of | 3 portions of |
| Spodumene | 1 part of | 1 part of | 2 portions of | 3 portions of | 3 portions of |
| Toner | 3 portions of | 7 portions of | 10 portions of | 12 portions of | 15 portions of |
| Raw material of outer glaze layer | Example 1 | Example 2 | Example 3 | Example 4 | Example 5 |
| Quartz crystal | 20 portions of | 22 portions of | 25 portions of | 27 portions of | 30 portions of |
| Albite | 23 portions of | 25 portions of | 27 portions of | 28 portions of | 30 portions of |
| Sodium silicate | 15 portions of | 16 portions of | 17 portions of | 20 portions of | 20 portions of |
| Kaolin clay | 7 portions of | 8 portions of | 8 portions of | 9 portions of | 10 portions of |
| Calcium silicate | 10 portions of | 11 portions of | 12 portions of | 13 portions of | 15 portions of |
| Silicon oxide | 6 portions of | 6 portions of | 8 portions of | 8 portions of | 10 portions of |
| Alumina oxide | 5 portions of | 5 portions of | 6 portions of | 7 portions of | 8 portions of |
| Talc | 6 portions of | 8 portions of | 8 portions of | 9 portions of | 10 portions of |
| Calcium silicate | 6 portions of | 7 portions of | 8 portions of | 9 portions of | 10 portions of |
| Zircon stone | 3 portions of | 3 portions of | 4 portions of | 5 portions of | 5 portions of |
| Gypsum plaster | 3 portions of | 4 portions of | 4 portions of | 4 portions of | 5 portions of |
| Borax | 1 part of | 1 part of | 1.2 parts of | 1.3 parts of | 1.5 parts of |
The ceramic products having the double-layer crack glaze prepared in the above examples 1 to 5 were subjected to the abrasion resistance and water absorption test according to the following procedures:
and (3) wear resistance test: the method comprises the steps of carrying out wear resistance test on fragments of the ceramic product by using a wear resistance tester, taking 5 fragments of the ceramic product, placing grinding steel balls with a certain grain size distribution, No. 80 white corundum and a certain amount of deionized water or distilled water on the fragments, carrying out rotary grinding according to a specified rotation rate, observing and comparing the worn ceramic fragments with unworn ceramic fragments, evaluating the wear resistance of the ceramic product by the grinding revolution number of the ceramic product fragments with the wear beginning, and averaging the wear resistance test results of the 5 fragments of the ceramic product to obtain the wear resistance test result of the ceramic product.
Water absorption test: taking 5 ceramic product fragments, cleaning, drying, weighing the ceramic product fragments respectively, separating the ceramic product fragments, placing the ceramic product fragments in distilled water, boiling for 3 hours, keeping the water surface above the ceramic product fragments by more than 10mm, taking out the ceramic product fragments, wiping off water attached to the surfaces of the ceramic product fragments by using water-saturated cloth, rapidly and respectively weighing the weights of the ceramic product fragments, calculating the water absorption rate of each ceramic product fragment through a formula, and calculating the average water absorption rate of the 5 ceramic product fragments to obtain the water absorption rate of the ceramic product, wherein the lower the water absorption rate is, the better the water resistance of the ceramic product is.
The results of the abrasion resistance and water absorption tests of the ceramic products having the double-layered crack glaze manufactured in the above examples 1 to 5 and the conventional ceramic products on the market as the comparative example are shown in table 2 below,
TABLE 2 test data
Wherein, the standard of the ceramic wear-resisting grade is 1 to 5 grades, 5 grades are best, 1 grade is worst, and the judgment standard is shown in the following table 3:
TABLE 3 ceramic abrasion resistance rating standards
| Number of grinding revolutions at which wear occurs | Rank of |
| 100 | 0 |
| 150 | 1 |
| 600 | 2 |
| 755，1500 | 3 |
| 2100，6000，12000 | 4 |
| ＞12000 | 5 |
The ceramic product manufactured by using the ceramic double-layer crack glaze provided in the above embodiments 1 to 5 has uniform and uniform crack lines, smooth and fine hand feeling, and also has wear resistance and water resistance equivalent to those of common ceramics, wherein the ceramic product having the double-layer crack glaze manufactured in embodiment 3 has the best wear resistance and water resistance, and is the best embodiment.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. A manufacturing process of ceramic double-layer crack glaze is characterized by comprising the following steps:
step 1, weighing an inner glaze layer raw material and an outer glaze layer raw material according to parts by weight for later use; wherein:
the inner glaze layer comprises the following raw materials in parts by weight: 23-30 parts of quartz, 11-15 parts of kaolin, 12-15 parts of forsterite, 8-12 parts of zircon, 9-15 parts of barium titanate, 8-12 parts of sodium silicate, 9-12 parts of calcium silicate, 8-12 parts of silicon oxide, 7-10 parts of talc, 8 parts of alumina, 5-8 parts of zinc oxide, 5-8 parts of silicon nitride, 2-3 parts of boronatrocalcite, 1-3 parts of spodumene and 7-15 parts of a coloring agent;
the outer glaze layer comprises the following raw materials in parts by weight: 22-30 parts of quartz, 25-30 parts of albite, 16-20 parts of sodium silicate, 8-10 parts of kaolin, 18-25 parts of calcium silicate, 6-10 parts of silicon oxide, 5-8 parts of aluminum oxide, 8-10 parts of talc, 3-5 parts of zircon, 4-5 parts of gypsum and 1-1.5 parts of borax;
step 2, obtaining inner glaze layer glaze water and outer glaze layer glaze water respectively by adopting the following method: mixing the raw materials, adding water accounting for 1.5-2 times of the total weight of the raw materials, heating to 50-60 ℃, stirring at a speed of 800-850 r/min for 20-30 minutes under a vacuum degree of 0.01-0.1 MPa, stirring at a speed of 80-120 r/min for 40-80 minutes, adjusting the water content of the inner layer glaze water to 55-58%, and adjusting the water content of the outer layer glaze water to 62-65%, so as to obtain inner and outer layer glaze water;
and step 3: carrying out primary glazing on the ceramic blank obtained by shaping by adopting inner-layer glaze water, airing, and carrying out secondary glazing by adopting outer-layer glaze water, wherein the thickness of the primary glazing is 0.7-0.8 mm, the thickness of the secondary glazing is 0.8-1.1 mm, after the secondary glazing, carrying out heat preservation firing on the glazed blank at 165-180 ℃ for 30-45 minutes, quenching to obtain quenching line ceramic after the heat preservation is finished, then firing the quenching line ceramic at 1270-1300 ℃ for 4-7 hours, cooling to obtain crack ceramic, and the surface crack-shaped glaze layer is the ceramic double-layer crack glaze.
2. The process for preparing the ceramic double-layer crack glaze according to claim 1, wherein the coloring agent is at least one of iron oxide, manganese oxide, copper oxide, cobalt oxide, nickel oxide, cadmium sulfide and cadmium telluride.
3. The process for preparing the ceramic double-layer crack glaze according to the claim 1, wherein the quenching step in the step 3 is specifically operated as follows: and after the heat preservation firing is finished under the condition of 150-180 ℃, quickly immersing the ceramic obtained by the heat preservation firing into normal-temperature clean water within 10 seconds, keeping for 5-8 seconds, and taking out to obtain the quenching line ceramic, wherein the height of the water surface higher than the ceramic is more than 30mm in the quenching process.
4. The inner glaze layer of the ceramic double-layer crack glaze is characterized by comprising the following components in parts by weight: 23-30 parts of quartz, 11-15 parts of kaolin, 12-15 parts of forsterite, 8-12 parts of zircon, 9-15 parts of barium titanate, 8-12 parts of sodium silicate, 9-12 parts of calcium silicate, 8-12 parts of silicon oxide, 7-10 parts of talc, 8 parts of aluminum oxide, 5-8 parts of zinc oxide, 5-8 parts of silicon nitride, 2-3 parts of boronatrocalcite, 1-3 parts of spodumene and 7-15 parts of a coloring agent.
5. The inner glaze layer of the ceramic double-layer crack glaze according to claim 4, wherein the color former is at least one of iron oxide, manganese oxide, copper oxide, cobalt oxide, nickel oxide, cadmium sulfide, cadmium telluride.
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| CN111423122B (en) | 2022-03-25 |
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