Manufacturing method of ceramic with fine concave-convex textures and ceramic product thereof
Patent Information
- Application Number
- CN202411544326.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-31
- Publication Date
- 2025-01-21
Smart Images
Figure CN119329207A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to, in particular to, a method for manufacturing ceramics with fine concave-convex textures and a ceramic product thereof. Background Art
[0002] Ceramic products are products made by mixing, molding, drying, sintering and other processes of clay or other inorganic non-metallic materials. In the field of daily life, ceramic products come in various forms, such as plates, bowls, cups, tea sets, vases, statues, tiles, toilets, wash basins, etc.
[0003] Most common ceramic products have smooth surfaces. Some ceramic products are configured with concave and convex textures for decorative purposes. With the development of ceramic manufacturing technology, not only the appearance of ceramics has gained attention from users, but also the improvement of the touch of ceramics during use has brought better experience to users. Ceramic craftsmanship with subtle concave and convex textures such as leather textures gives ceramic products a texture, light and touch close to leather, thereby enhancing the decorative effect.
[0004] Taking leather grain as an example, the existing leather grain ceramic manufacturing processes mainly include laser printing technology, leather grain glaze technology, and compression molding technology. Laser printing technology manufactures ceramic products with leather grain through stacking manufacturing, 3D printing, laser selective sintering, laser selective melting, extrusion molding, photocuring molding and other technologies. The technology of this solution is not mature enough, the efficiency is low, the cost is high, and it is difficult to promote on a large scale. Leather grain glaze technology prepares a specific leather grain glaze, applies it to a plate-shaped blank printed with a leather grain pattern, and then burns it at high temperature to obtain a plate-shaped blank with imitation leather texture. The precise control of the firing conditions of this solution results in poor touch effect of the formed leather grain. Compression molding technology uses a mold with many irregularly distributed concave and convex surfaces to transfer the pattern to the mud material. This solution is usually only suitable for forming leather grain on the flat surface of the tile, and the mud material is easy to adhere to the mold, and the yield rate is not high.
[0005] It can be seen that the existing methods for manufacturing ceramics with fine concave-convex textures have problems such as low processing efficiency, inability to adapt to large-scale production, poor touch of the finished product, low yield rate, and inability to adapt to products with complex structures. Summary of the invention
[0006] In order to solve the problems existing in the prior art, the main purpose of the present invention is to provide a method for manufacturing ceramics with fine concave-convex textures and ceramic products thereof, which can realize the manufacture of ceramic products with textures such as leather, and realize the simulation of micron-level creases and ten-micron-level concave-convex depths, so that the ceramic texture can highly restore the touch of leather, is suitable for setting leather textures on daily-use ceramic products with complex structures, and has the characteristics of high processing efficiency, suitability for large-scale production, and high yield rate.
[0007] In order to achieve the above object, the present invention adopts the following technical solution: In a first aspect, the present invention provides a method for manufacturing a ceramic having a fine concave-convex texture, the method comprising: 1. Mold configuration: A hollow grouting mold with a grouting port is prepared, wherein the hollow grouting mold is provided with a grouting molding cavity for a ceramic product, and a fine concave-convex texture is provided inside the grouting molding cavity; (ii) Grouting into blanks: Performing a first grouting operation, injecting clay slurry into the cavity of the hollow grouting mold, pouring out excess clay slurry after a set first residence time, and waiting for the clay slurry in the cavity to solidify; Performing a second grouting, injecting porcelain mud slurry into the mold cavity of the hollow grouting mold, pouring out excess porcelain mud slurry after a set second residence time, and waiting for the porcelain mud slurry in the mold cavity to solidify; (III) Firing and forming: Firing the embryo.
[0008] Preferably, the grouting process comprises: after the second grouting, plugging the grouting port of the blank with mud, and reserving small holes in the mud; soaking the bottom and side outer wall of the hollow grouting mold in water, and taking it out after a set soaking time; inserting the air pipe into the blank through the small hole and inflating the blank, and after completion, pulling out the air pipe and plugging the small hole with mud.
[0009] Preferably, the above scheme comprises a first mold and a second mold, the first mold being provided with a mold cavity for grouting molding, the second mold being provided with a mold cavity matching the outer contour shape of the first mold, the first molds being fixed to each other as a whole to form a mold cavity for grouting molding; the outer molds being fixed to each other as a whole and wrapping the first molds therein; wherein the first mold is provided with a fine concave-convex texture, and the distance between the fine concave-convex texture in the mold cavity of the first mold and the outer surface of the corresponding first mold is the same everywhere.
[0010] Preferably, the mold configuration includes: A three-dimensional model of a ceramic product is established, a three-dimensional model of a first master mold with the three-dimensional model of the ceramic product as a mold cavity is established, and a second master mold with the three-dimensional model of the first master mold as a mold cavity is established, and fine concave-convex textures are set on the surfaces of the three-dimensional model of the ceramic product and the three-dimensional model of the first master mold. By using 3D printing and adopting red wax material, the three-dimensional model of the first mother mold and the three-dimensional model of the first mother mold are printed as the first mother mold and the first mother mold respectively, and the first mold and the second mold are prepared based on the first mother mold and the second mother mold.
[0011] Preferably, the mold configuration further comprises: Pouring silica gel into a mold with the first mother mold as a mold core to prepare a first silica gel mold, and pouring silica gel into a mold with the first mother mold as a mold core to prepare a second silica gel mold; Gypsum slurry is poured into the first silicone mold to prepare a first mold made of gypsum, and gypsum slurry is poured into the second silicone mold to prepare a second mold made of gypsum.
[0012] Preferably, the above scheme, the grouting forming comprises: After sealing the grouting port, place the grouting port of the hollow grouting mold downward. After the set time, place the grouting port of the hollow grouting mold upward again. After inflation is completed, place the hollow grouting mold with the grouting port facing downward for a set time, then place the hollow grouting mold with the grouting port facing upward for a set time, and then drill holes in the sealing mud to release air.
[0013] Preferably, the sintering process comprises: The green body is taken out from the hollow casting mold, and the green body is trimmed and fired to form a ceramic product, and the firing temperature is controlled between 1270 and 1290 degrees; The fired ceramic product is ground for 30 seconds to 120 seconds in a vibration grinder mixed with 0.5-1 cm first spherical abrasives and 1-1.5 cm second spherical abrasives.
[0014] Preferably, the fine concave-convex texture is arranged on the curved surface of the ceramic product, the depth of the leather texture is 20-100 microns; the resolution size of the fine concave-convex texture is 1-5 microns, and the fine concave-convex texture is preferably a leather texture.
[0015] Preferably, in the above scheme, the concentration of the ceramic mud slurry used in the first grouting is higher than the concentration of the porcelain mud slurry used in the second grouting; In the first grouting, after 5-20 minutes, pour out the excess clay slurry, then place the grouting port of the hollow grouting mold downward for 2-4 minutes, and then place it upward for 10-20 minutes; In the second grouting, after 10-25 minutes, pour out the excess porcelain mud slurry, then place the grouting port of the hollow grouting mold downward for 3-5 minutes, and then place the grouting port upward for 15-25 minutes.
[0016] In a second aspect, the present invention provides a ceramic product, including a product body, characterized in that the product body is provided with a cavity, the cavity is provided with an opening facing outward, the inner layer of the product body is composed of porcelain, the outer layer of the product is composed of pottery, and the outer surface of the outer layer is provided with a fine concave-convex texture.
[0017] Compared with the prior art, the present invention has the following beneficial effects: (1) The ceramic manufacturing method of the present invention is provided with a hollow grouting mold with fine concavoconvex textures, and then by grouting the hollow grouting mold twice and solidifying, pottery clay slurry and porcelain clay slurry are injected in sequence to form a double-layer structure ceramic product with a fusion of pottery and porcelain. The outer side of the ceramic outer layer of the ceramic product can form fine concavoconvex textures such as leather in the mold, and the porcelain inner layer of the ceramic product can fully strengthen the structure of the ceramic outer layer, so that the finally fired ceramic product not only has high strength, but also can highly restore the touch of leather. At the same time, the grouting scheme has high processing efficiency and is suitable for large-scale production, which is convenient for the promotion of ceramic products with high-quality experience such as leather texture.
[0018] (2) The ceramic manufacturing method of the present invention configures the hollow grouting mold into a first mold and a second mold, and the first mold is provided with a fine concave-convex texture, which can form a leather texture after the clay slurry solidifies. The second mold can be tightly wrapped outside the first mold, and the fine concave-convex texture of the first mold is distributed at a distance from the corresponding outer side with equal wall thickness, so that after the second grouting, the immersion of the first mold can re-infiltrate the fine concave-convex texture of the clay on the blank, so that during the subsequent inflation, the clay with the fine concave-convex texture is secondary solidified with sufficient support from the porcelain solidification layer, thereby achieving simulated micron-level creases and ten-micron-level concave-convex depth.
[0019] (3) Furthermore, in the ceramic manufacturing method of the present invention, the hollow casting mold is manufactured by three-dimensional modeling and red wax 3D printing of the master mold, thereby forming a rich and diverse leather texture pattern with high definition, thereby ensuring that the leather texture on the ceramic is delicate and realistic to the touch.
[0020] (4) Furthermore, in the ceramic manufacturing method of the present invention, the concentration of the ceramic clay slurry is higher than that of the porcelain clay slurry, so that the inner and outer layers of the ceramic product are fully fused and not easy to crack. At the same time, by adjusting the solidification time of the ceramic clay slurry and the solidification time of the porcelain clay slurry, the thickness of the ceramic outer layer and the porcelain inner layer can be controlled respectively, so as to highly fit the fine concave and convex texture on the hollow grouting mold, so that the green body obtains the fine concave and convex texture with better strength.
[0021] The present invention will be further described below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 A schematic flow chart of a ceramic manufacturing method according to an embodiment of the present invention.
[0023] Figure 2 A schematic structural diagram of a three-dimensional model of a ceramic product in a ceramic manufacturing method according to an embodiment of the present invention; Figure 3A schematic structural diagram of a hollow grouting mold in a ceramic manufacturing method according to an embodiment of the present invention; Figure 4 A schematic structural diagram of a hollow grouting mold during a single grouting operation in a ceramic manufacturing method according to an embodiment of the present invention; Figure 5 A schematic structural diagram of a hollow grouting mold after one grouting in a ceramic manufacturing method according to an embodiment of the present invention; Figure 6 A schematic structural diagram of a hollow grouting mold during secondary grouting in a ceramic manufacturing method according to an embodiment of the present invention; Figure 7 A schematic structural diagram of a hollow grouting mold after secondary grouting in a ceramic manufacturing method according to an embodiment of the present invention; Figure 8 A schematic structural diagram of a hollow grouting mold during inflation in a ceramic manufacturing method according to an embodiment of the present invention; Fig. 9 A schematic structural diagram of a ceramic manufacturing method according to an embodiment of the present invention when a green body is taken out from a hollow slip casting mold.
[0024] Fig.10 A schematic diagram of the appearance of a ceramic product manufactured by the ceramic manufacturing method according to an embodiment of the present invention.
[0025] Figure numerals: 10, three-dimensional model of ceramic product; 20, fine concave-convex texture; 30, hollow slip casting mold; 31, first mold; 32, second mold; 41, pottery clay slurry; 42, porcelain clay slurry; 43, mud seal; 50, air pipe; 60, green body. DETAILED DESCRIPTION
[0026] In order to better illustrate the purpose, technical solutions and advantages of the present invention, the specific implementation methods of the present invention are further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.
[0027] like Figure 1 As shown, this embodiment is a schematic flow chart of a ceramic manufacturing method having a fine concave-convex texture 20 according to the present invention. Optionally, in the ceramic manufacturing method of this embodiment, the fine concave-convex texture 20 is configured as a leather texture, the depth of the leather texture is 20-100 microns, the resolution size of the leather texture is 1-5 microns, and the leather texture can be set on the curved surface of the ceramic product.
[0028] In detail, a method for manufacturing a ceramic having a fine concave-convex texture 20 of the present invention comprises the following steps: 1. Mold configuration: S101, establishing a three-dimensional model 10 of a ceramic product and its master mold, with a fine concave-convex texture 20 being arranged on the surface of the three-dimensional model.
[0029] Specifically, a three-dimensional model 10 of a ceramic product is established. On this basis, a three-dimensional model of a first master mold with the three-dimensional model 10 of the ceramic product as a mold cavity can be easily established, and a second master mold with the three-dimensional model of the first master mold as a mold cavity can be established. Leather textures are provided on the surfaces of the three-dimensional model 10 of the ceramic product and the three-dimensional model of the first master mold. In the three-dimensional model of the first master mold, the outer surface contour thereof is consistent with the thickness of the area corresponding to the leather texture in its mold cavity.
[0030] S102, manufacturing a master mold based on 3D printing, manufacturing a silicone mold by pouring silicone into a mold with the master mold as the core, and manufacturing a hollow grouting mold 30 by pouring gypsum slurry into the silicone mold.
[0031] Specifically, by 3D printing, the three-dimensional model of the first master mold and the three-dimensional model of the first master mold are printed as the first master mold and the second master mold respectively using red wax material, and the first mold 31 and the second mold 32 are prepared based on the first master mold and the second master mold. The red wax material can achieve a high degree of restoration of the details of the leather texture, thereby improving the accuracy at the source.
[0032] Then, silicone is poured into the mold with the first mother mold as the core to prepare a first silicone mold, and silicone is poured into the mold with the first mother mold as the core to prepare a second silicone mold; gypsum slurry is poured into the first silicone mold to prepare a first mold 31 made of gypsum material, and gypsum slurry is poured into the second silicone mold to prepare a second mold 32 made of gypsum material.
[0033] Among them, the first mold 31 and the second mold 32 form a hollow grouting mold 30, the first mold 31 is equipped with a grouting molding cavity, and the grouting molding cavity is provided with a leather texture; the second mold 32 is equipped with a cavity matching the outer contour shape of the first mold 31, and each first mold 31 is fixed to each other as a whole to form a grouting molding cavity; each outer mold is fixed to each other as a whole, and wraps each first mold 31 therein.
[0034] It is worth noting that the ceramic product is made through a three-dimensional model, and the master mold of the ceramic product is also manufactured based on the three-dimensional model and 3D printing. The master mold has a high precision and can form a realistic concave and convex leather texture, so that the concave and convex leather texture on the silicone mold and the hollow grouting mold 30 of gypsum also has a high precision, so that the concave and convex leather texture on the ceramic product has a good touch.
[0035] It is worth noting that the 3D printed master mold can be configured as one or more components, and the master mold of one or more components has a mold cavity based on the three-dimensional model of the ceramic product as a prototype, and a pouring port configured with the mold cavity. The master mold of one or more components can be made into one or more silicone molds, and the silicone mold can form a hollow gypsum grouting mold 30 with a shape and structure consistent with the master mold by pouring gypsum slurry. One or more components of the hollow gypsum grouting mold 30 also have a mold cavity based on the three-dimensional model of the ceramic product as a prototype.
[0036] It is understandable that by printing the master mold and then preparing the silicone mold, it is possible to construct a large number of hollow grouting molds 30 made of gypsum material. The more hollow grouting molds 30 there are, the higher the production efficiency.
[0037] (ii) Grouting into blanks: S201, injecting clay slurry 41 into the mold cavity of the hollow grouting mold 30, pouring out excess clay slurry 41 after a set first residence time, and waiting for the clay slurry 41 in the mold cavity to solidify.
[0038] S202, injecting porcelain mud slurry 42 into the mold cavity of the hollow slip casting mold 30, pouring out excess porcelain mud slurry 42 after a set second residence time, and waiting for the porcelain mud slurry 42 in the mold cavity to solidify.
[0039] It is worth noting that the ceramic manufacturing method of this embodiment performs two slurry injections. The first slurry injection can solidify a solidified layer of the clay slurry 41 in the mold cavity of the hollow slurry injection mold 30, and the second slurry injection can solidify a solidified layer of the porcelain clay slurry 42 on the basis of the solidified layer of the clay slurry 41. The solidified layer of the clay slurry 41 fully fits the mold cavity of the hollow slurry injection mold 30, and a leather texture can be formed. At the same time, the solidified layer of the porcelain clay slurry 42 enables the ceramic product to have a good inner surface, and can make the leather texture outside the clay solidified layer have better strength and quality.
[0040] It is worth noting that the first residence time directly determines the thickness of the solidified layer of the clay slurry 41. Similarly, the second residence time determines the thickness of the solidified layer of the porcelain clay slurry 42. In order to better form a ceramic product with a fine concave-convex texture 20, the solidified layer of the clay slurry 41 should be sufficient to cover the leather texture in the mold cavity of the hollow casting mold 30, and at the same time, a relatively coherent layer structure can be formed so that the concave-convex textures are continuous with each other. The solidified layer of the porcelain clay slurry 42 should be sufficient to cover the unevenness inside the solidified layer of the clay slurry 41, and make the ceramic product have a thickness that meets the strength requirements.
[0041] Specifically, in the first grouting, after 5-20 minutes, pour out the excess clay slurry 41, then place the hollow grouting mold 30 with the grouting port facing downward for 2-4 minutes, and then place it with the grouting port facing upward for 10-20 minutes; in the second grouting, after 10-25 minutes, pour out the excess clay slurry 42, then place the hollow grouting mold 30 with the grouting port facing downward for 3-5 minutes, and then place it with the grouting port facing upward for 15-25 minutes. Thus, the texture of the prepared ceramic product is more uniform.
[0042] It can be understood that in this embodiment, the composition of the ceramic mud 41 is different from that of the porcelain mud 42. The ceramic mud 41 can be added with a pigment component, so that the color of the fired ceramic is closer to the designed leather texture background color, and the composition of the porcelain mud 42 can make the ceramic product as a whole have sufficient hardness, and the inner cavity of the product has good use quality. At the same time, after injecting the porcelain mud 42, the ceramic mud 41 can be activated again, so that the ceramic mud 41 and the porcelain mud 42 can be more fully combined with each other during the solidification process and the firing process.
[0043] It can be understood that in this embodiment, the concentration of the ceramic mud 41 used in the first grouting is higher than the concentration of the porcelain mud 42 used in the second grouting. The low concentration of porcelain mud 42 will activate the surface layer of the ceramic mud 41, so that the porcelain mud solidification layer is fully integrated into the ceramic mud solidification layer, so that the inner and outer layers of the ceramic product after firing are like an integrated structure.
[0044] S203, after the second grouting, the grouting port of the blank 60 is sealed with mud, and a small hole is reserved in the mud. The grouting port of the hollow grouting mold 30 is placed downward. After a set time, the grouting port of the hollow grouting mold 30 is placed upward again, and then the bottom and side outer wall of the hollow grouting mold 30 are immersed in water and taken out after the set immersion time.
[0045] It is worth noting that, in the ceramic manufacturing method of the present embodiment, after the second slurry injection, the first mold 31 can be removed from the second mold 32, and the fine concavo-convex texture 20 of the first mold 31 is distributed at a distance from the corresponding outer side and is configured with equal wall thickness. Only the first mold 31 is immersed, and water can evenly penetrate into the fine concavo-convex texture 20 through the outer side of the first mold 31 to reactivate the solidified clay. During the subsequent inflation, with the full support of the porcelain solidification layer, the clay with the fine concavo-convex texture 20 solidifies for the second time, repairing the cracks of the first solidification, so that the green body 60 fully plasticizes the details of the fine concavo-convex texture 20.
[0046] S204, after the first mold 31 is soaked, the air pipe 50 is inserted into the blank 60 through the small hole and the blank is inflated. After completion, the air pipe 50 is pulled out and the small hole is blocked with mud. After completion of the inflation, the grouting port of the hollow grouting mold 30 is placed downward for a set time, and then the grouting port of the hollow grouting mold 30 is placed upward for a set time, and then a hole is punched in the blocking mud to release air.
[0047] It is worth noting that, in this embodiment, the inflation can apply pressure toward the inner wall of the mold cavity to the solidified layers of the clay slurry 41 and the porcelain clay slurry 42, and cooperate with the clay reactivated by immersion in water, so that the solidified layer of the clay slurry 41 can better fit the fine concave-convex texture 20 on the mold cavity of the hollow slip casting mold 30. At the same time, the inflation can also make the solidified layers of the clay slurry 41 and the porcelain clay slurry 42 better fused, and make the ceramic embryo body have sufficient strength as a whole.
[0048] It is worth noting that, in this embodiment, the sealed blank 60 is inflated, the solidified layers of the pottery mud 41 and the porcelain mud 42 still have a certain tangential fluidity, and the direction of the grouting port of the hollow grouting mold 30 is adjusted so that the gaps in the solidification process are better filled, so that the fine concave-convex texture 20 can be shaped in a manner closer to the shape of the mold cavity. Before the final solidification of the blank 60, the gas in the blank 60 is discharged in advance, so that the blank 60 can be prevented from cracking.
[0049] It is understandable that when inflating, the grouting port of the hollow grouting mold 30 is placed downward for 2.5-3.5 hours, and then the grouting port of the hollow grouting mold 30 is placed upward for 2.5-3.5 hours. The duration of the inflation seal can be extended or shortened depending on the situation.
[0050] (III) Firing and forming: S301, after complete solidification, take out the green body 60 from the hollow grouting mold 30, and form a ceramic product after trimming and firing. The firing temperature is controlled between 1270 and 1290 degrees.
[0051] It is worth mentioning that this firing temperature can ensure that both the outer layer of pottery clay solidification layer and the inner layer of porcelain clay solidification layer are well fired, not easy to crack, and have a high yield rate.
[0052] S302, grinding the fired ceramic product for 30 seconds to 120 seconds in a vibration grinder mixed with a first spherical abrasive of 0.5-1 cm and a second spherical abrasive of 1-1.5 cm.
[0053] It is worth noting that in this embodiment, the first spherical abrasive of 0.5-1 cm and the second spherical abrasive of 1-1.5 cm are different in size and can be fully dispersed in the vibration grinder. The first spherical abrasive of 0.5-1 cm and the second spherical abrasive of 1-1.5 cm can provide a sufficiently large curved surface, and only the larger protrusions in the leather texture are polished during vibration, while retaining the fine folds, thereby simulating a complex feel of partial smoothness and partial roughness.
[0054] In summary, the ceramic manufacturing method according to the embodiment of the present invention: On the one hand, a hollow grouting mold 30 with fine concavoconvex textures 20 is provided, and then the hollow grouting mold 30 is grouted twice and solidified, and then pottery mud 41 and porcelain mud 42 are injected in sequence to form a double-layer structure ceramic product with a fusion of pottery and porcelain. The outer side of the ceramic outer layer of the ceramic product can form a fine concavoconvex texture 20 such as leather in the mold, and the porcelain inner layer of the ceramic product can fully strengthen the structure of the ceramic outer layer, so that the finally fired ceramic product not only has a higher strength, but also can highly restore the touch of leather; On the other hand, the hollow grouting mold 30 is configured as a first mold 31 and a second mold 32. The fine concavo-convex texture 20 of the first mold 31 can form a leather texture after the clay slurry 41 solidifies. The second mold 32 can be tightly wrapped outside the first mold 31. The fine concavo-convex texture 20 of the first mold 31 is distributed at a distance from the corresponding outer side and is configured with equal wall thickness, so that after the second grouting, the immersion of the first mold 31 can re-infiltrate the fine concavo-convex texture 20 of the clay on the blank 60, so that during the subsequent inflation, the clay with the fine concavo-convex texture 20 is secondarily solidified with sufficient support from the porcelain solidification layer, thereby achieving simulated micron-level creases and a concavo-convex depth of ten microns.
[0055] On the whole, it has the characteristics of high-quality leather texture touch experience, high yield rate, high processing efficiency, and large-scale production and promotion.
[0056] It is worth noting that the above-mentioned ceramic products can be daily-use products such as plates, bowls, cups, tea sets, vases, etc., which have a curved surface structure. It is difficult to form fine concave-convex textures 20 on the surface in traditional ceramic manufacturing methods.
[0057] like Figures 2 to 9 , is a physical schematic diagram of a ceramic manufacturing method according to a specific embodiment of the present invention. The steps of the ceramic manufacturing method are: Establish as Figure 2 A three-dimensional model 10 of a ceramic product is shown, the ceramic product is a cup, and a leather texture is provided on the side outer wall of the cup. Figure 2The three-dimensional model of the cup can be used to establish a first master mold with the three-dimensional model of the cup as the mold cavity, and a second master mold with the first master mold as the mold cavity. The first master mold is provided with a leather texture.
[0058] Not shown in the figure is that after the printed first master mold and the second master mold are trimmed to a certain extent, the printed first master mold and the second master mold are placed in a casting box and poured with silicone. Then, the silicone molds for preparing the first master mold and the second master mold are poured with gypsum slurry through the silicone molds, and after solidification, the first mold 31 and the second mold 32 made of gypsum are obtained. The hollow grouting mold 30 including the first mold 31 and the second mold 32 is as shown in FIG. Figure 3 As shown, the first mold 31 is provided with a leather texture.
[0059] like Figure 4 As shown, clay slurry 41 is injected into the hollow casting mold 30 and solidified after 5-20 minutes.
[0060] like Figure 5 As shown, pour out the excess clay slurry 41 in the hollow grouting mold 30, then place the hollow grouting mold 30 with the grouting port facing downward for 3 minutes, and then place the hollow grouting mold 30 with the grouting port facing upward for 10-20 minutes, at which time a clay solidification layer is formed in the mold cavity of the hollow grouting mold 30.
[0061] like Figure 6 As shown, the porcelain mud slurry 42 is injected into the hollow slip casting mold 30 having the clay solidification layer, and then solidified for 5-20 minutes.
[0062] like Figure 7 As shown, pour out the excess porcelain mud slurry 42 in the hollow slip casting mold 30, then place the hollow slip casting mold 30 with the slip casting port facing downward for 3 minutes, and then place the hollow slip casting mold 30 with the slip casting port facing upward again. At this time, a porcelain mud solidification layer is formed in the pottery mud solidification layer of the hollow slip casting mold 30.
[0063] A mud seal 43 is set on the pouring port of the hollow grouting mold 30, and a small hole is reserved in the mud seal 43. The hollow grouting mold 30 is first turned upside down for 3 minutes, and then the hollow grouting mold 30 is turned upside down for 3 minutes. The second mold 32 is disassembled, and the first mold 31 is retained. The first mold 31 is placed in a pool and soaked for 15 to 20 minutes to allow water to fully penetrate into the first mold 31.
[0064] Further, if Figure 8As shown, the air pipe 50 is inserted into the blank 60 through the small hole and inflated into the blank. After completion, the air pipe 50 is pulled out, and the small hole on the mud seal 43 is quickly sealed with mud. After the inflation is completed, the grouting port of the hollow grouting mold 30 is placed downward for 3 hours, and then the grouting port of the hollow grouting mold 30 is placed upward for 3 hours, and then a hole is punched in the plugging mud to release air.
[0065] like Fig. 9 As shown, finally, after the green body 60 is completely solidified, the green body 60 is taken out from the hollow grouting mold 30, the cup mouth of the green body 60 is trimmed, and the green body 60 is fired at 1270 to 1290 degrees to finally form a ceramic cup with leather grain on the outer wall.
[0066] refer to Fig.10 , is a ceramic cup manufactured by the ceramic manufacturing method according to the specific embodiment of the present invention. The ceramic cup has a cavity, and the cavity has an opening facing outward. The ceramic cup has an inner layer composed of porcelain, the inner layer is a white inner wall, and is glazed. The ceramic cup also has an outer layer composed of pottery, and the outer layer is a beige outer wall. The inner wall of the ceramic cup is fine and uniform and has high strength. The outer wall of the ceramic cup has a leather texture with uneven depth and irregular shape, specifically, there are many larger and smoother protrusions, and there are fine wrinkles with micron-level resolution between the protrusions, forming a realistic leather texture and a realistic touch.
[0067] The above embodiments mainly describe the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.
[0068] The above embodiments mainly describe the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.
Claims
1. A method for manufacturing a ceramic having a fine concave-convex texture (20), characterized in that: The ceramic manufacturing method comprises:
1. Mold configuration: A hollow grouting mold (30) with a grouting port is prepared, wherein the hollow grouting mold (30) is provided with a grouting molding cavity for a ceramic product, and a fine concave-convex texture (20) is provided inside the grouting molding cavity; (ii) Grouting into blanks: Performing a first grouting operation, injecting a clay slurry (41) into a mold cavity of a hollow grouting mold (30), pouring out excess clay slurry (41) after a set first residence time, and waiting for the clay slurry (41) in the mold cavity to solidify; Performing a second grouting process, injecting a porcelain mud slurry (42) into the mold cavity of the hollow grouting mold (30), pouring out excess porcelain mud slurry (42) after a set second residence time, and waiting for the porcelain mud slurry (42) in the mold cavity to solidify; (III) Firing and forming: Firing the embryo.
2. A method for manufacturing a ceramic having a fine concave-convex texture (20) according to claim 1, characterized in that: The grouting process comprises: after the second grouting, the grouting port of the blank (60) is blocked with mud, and a small hole is reserved in the mud; the bottom and the side outer wall of the hollow grouting mold (30) are immersed in water and taken out after a set immersion time; the air pipe (50) is inserted into the blank (60) through the small hole and air is inflated into the blank, and after completion, the air pipe (50) is withdrawn and the small hole is blocked with mud.
3. A method for manufacturing a ceramic having a fine concave-convex texture (20) according to claim 2, characterized in that: The hollow grouting mold (30) comprises a first mold (31) and a second mold (32), wherein the first mold (31) is provided with a grouting molding cavity, and the second mold (32) is provided with a cavity matching the outer contour shape of the first mold (31), and each of the first molds (31) is fixed to each other as a whole to form a grouting molding cavity; each of the outer molds is fixed to each other as a whole and wraps each of the first molds (31) therein; wherein the first mold (31) is provided with a fine concave-convex texture (20), and the distance between the fine concave-convex texture (20) in the cavity of the first mold (31) and the outer surface of the corresponding first mold (31) is the same everywhere.
4. A method for manufacturing a ceramic having a fine concave-convex texture (20) according to claim 3, characterized in that: The mold configuration includes: A three-dimensional model (10) of a ceramic product is established, a three-dimensional model of a first master mold with the three-dimensional model (10) of the ceramic product as a mold cavity is established, and a second master mold with the three-dimensional model of the first master mold as a mold cavity is established, and fine concave-convex textures (20) are provided on the surfaces of the three-dimensional model (10) of the ceramic product and the three-dimensional model of the first master mold, By using 3D printing and adopting red wax material, the three-dimensional model of the first mother mold and the three-dimensional model of the first mother mold are printed as the first mother mold and the second mother mold respectively, and the first mold (31) and the second mold (32) are prepared based on the first mother mold and the second mother mold.
5. A method for manufacturing a ceramic having a fine concave-convex texture (20) according to claim 4, characterized in that: The mold configuration also includes: Pouring silica gel into a mold with the first mother mold as a mold core to prepare a first silica gel mold, and pouring silica gel into a mold with the first mother mold as a mold core to prepare a second silica gel mold; Gypsum slurry is poured into the first silicone mold to prepare a first mold (31) made of gypsum, and gypsum slurry is poured into the second silicone mold to prepare a second mold (32) made of gypsum.
6. A method for manufacturing a ceramic having a fine concave-convex texture (20) according to claim 2, characterized in that: The grouting forming comprises: After the grouting port is blocked, the grouting port of the hollow grouting mold (30) is placed downward, and after a set time, the grouting port of the hollow grouting mold (30) is placed upward again. After the inflation is completed, the hollow grouting mold (30) is placed with the grouting port facing downward for a set time, and then the hollow grouting mold (30) is placed with the grouting port facing upward for a set time, and then holes are punched on the plugging mud material to release air.
7. A method for manufacturing a ceramic having a fine concave-convex texture (20) according to claim 1, characterized in that: The firing molding comprises: The green body (60) is taken out from the hollow casting mold (30), and the green body (60) is trimmed and fired to form a ceramic product, and the firing temperature is controlled between 1270 and 1290 degrees; The fired ceramic product is ground for 30 seconds to 120 seconds in a vibration grinder mixed with 0.5-1 cm first spherical abrasives and 1-1.5 cm second spherical abrasives.
8. The method for manufacturing a ceramic having a fine concave-convex texture (20) according to claim 1, characterized in that: The fine concavo-convex texture (20) is arranged on the curved surface of the ceramic product, the depth of the leather texture is 20-100 micrometers; the resolution size of the fine concavo-convex texture (20) is 1-5 micrometers, and the fine concavo-convex texture (20) is preferably a leather texture.
9. A method for manufacturing a ceramic having a fine concave-convex texture (20) according to claim 1, characterized in that: The concentration of the ceramic mud slurry (41) used in the first grouting is higher than the concentration of the porcelain mud slurry (42) used in the second grouting; In the first grouting, after 5-20 minutes, pour out the excess clay slurry (41), then place the hollow grouting mold (30) with the grouting port facing downward for 2-4 minutes, and then place it with the grouting port facing upward for 10-20 minutes; In the second grouting, after 10-25 minutes, pour out the excess porcelain mud slurry (42), then place the hollow grouting mold (30) with the grouting port facing downward for 3-5 minutes, and then place it with the grouting port facing upward for 15-25 minutes.
10. A ceramic product, comprising a product body, characterized in that: The product body is provided with a cavity, the cavity is provided with an opening facing outward, the inner layer of the product body is made of porcelain, the outer layer of the product is made of pottery, and the outer surface of the outer layer is provided with fine concave-convex textures (20).