CN113896570B - Digital relief ceramic rock plate and preparation method thereof - Google Patents
Digital relief ceramic rock plate and preparation method thereof Download PDFInfo
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- CN113896570B CN113896570B CN202111128575.8A CN202111128575A CN113896570B CN 113896570 B CN113896570 B CN 113896570B CN 202111128575 A CN202111128575 A CN 202111128575A CN 113896570 B CN113896570 B CN 113896570B
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/80—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only ceramics
- C04B41/81—Coating or impregnation
- C04B41/89—Coating or impregnation for obtaining at least two superposed coatings having different compositions
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C8/00—Enamels; Glazes; Fusion seal compositions being frit compositions having non-frit additions
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/52—Multiple coating or impregnating multiple coating or impregnating with the same composition or with compositions only differing in the concentration of the constituents, is classified as single coating or impregnation
Abstract
The invention discloses a digital relief ceramic rock plate and a preparation method thereof. The preparation method comprises the following steps: applying base coat on the surface of the ceramic rock plate blank; printing a pattern on the surface of the blank body after the ground coat is applied by ink jet; positioning the ink-jet printing furnace transmutation glaze on the surface of the blank after the pattern is printed by ink-jet printing to form relief texture with crystal flower effect; applying a protective glaze on the surface of the blank after the ink-jet printing transmutation glaze; and (5) firing. The method combines the digital relief process with the transmutation glaze to develop a series of digital relief ceramic rock boards, and the board surface has strong stereoscopic impression and rich decorative effect.
Description
Technical Field
The invention relates to a digital relief ceramic rock plate and a preparation method thereof, belonging to the technical field of production and manufacturing of building ceramics.
Background
With the rapid development of the ceramic industry in the whole world and the full customization of the home decoration industry, rock plates have a hot tide all over the country, so that the rock plates in China form a situation of hundreds of years of controversy. At present, the ceramic rock plate on the die surface is mainly realized by the following processes: 1. and printing raised glaze on the surface of the plane green brick by a roller. The decoration effect of the method is relatively single, and the fineness degree is limited. 2. The engraving ink is ink-jet printed and a protective glaze is applied. Although relief engraving textures can be formed, this can result in the protective glaze peeling off. Generally, the high-temperature viscosity of the protective glaze is larger, and a higher application amount of the protective glaze is required for forming the carving texture with strong stereoscopic impression, but the transparent impression and the color difference of the protective glaze are easily caused, and the low application amount of the protective glaze can cause the shallow carving depth to influence the stereoscopic effect. 3. The mould texture is formed by pressing the traditional mould, the mould opening cost is high, and the excellent rate is low. 4. And stripping the base glaze, and spraying common glaze, wherein the carving decoration effect is single. 5. Printing the carved ink and stripping the overglaze to form the three-dimensional relief effect at a fixed position, and then carrying out ink-jet printing on the pattern and spraying the protective glaze. Although the three-dimensional relief effect can be generated, the defects are that the ink-jet printing pattern needs to be accurately aligned with the texture of the blank, otherwise, the frosting dislocation is easily generated, and in addition, the color gamut realized only by the ink-jet pattern is relatively narrow, and the transmutation effect is avoided.
Disclosure of Invention
Aiming at the problems, the invention provides a digital relief ceramic rock plate and a preparation method thereof.
In a first aspect, the invention provides a method for preparing a digital relief ceramic rock plate. The preparation method comprises the following steps:
applying base coat on the surface of the ceramic rock plate blank;
printing a pattern on the surface of the blank body after the ground coat is applied by ink jet;
positioning ink-jet printing transmutation glaze on the surface of the blank after the pattern is printed by ink-jet printing to form relief texture with crystal flower effect;
applying a protective glaze on the surface of the blank after the ink-jet printing of the transmutation glaze;
and (5) firing.
According to the preparation method, the transmutation glaze is printed in a positioning mode through a digital technology, compared with the relief texture formed by stripping the ground glaze through ink-jet printing engraving ink, the amount of the transmutation glaze is saved to a great extent, and the crystal pattern effect can be achieved in a local positioning mode. And because the firing range of the transmutation glaze is relatively narrow compared with that of the common glaze, the defect of the brick surface caused by the fluctuation of the firing system can be avoided, and the defect of the glaze surface introduced by large-area printing of the transmutation glaze is prevented by positioning the printing transmutation glaze.
Preferably, the chemical composition of the transmutation glaze comprises: by mass percent, siO 2 ：40～45％、Al 2 O 3 :14 to 18%, alkaline earth metal oxide: 23 to 29%, alkali metal oxide: 2.5-4.5% of ZrO 2 :5.0 to 7.0%, F:2.0 to 3.0 percent. Controlling the chemical composition of the transmutation glaze within the above range can ensure that the glaze has a suitable height under the existing firing systemWarm viscosity, can produce a mutual fusion of transmutation-like effects.
Preferably, the specific gravity of the transmutation glaze is 1.60-1.80 g/cm 3 The application amount is 100 to 400g/m 2 。
Preferably, the chemical composition of the ground glaze comprises, by mass percent: siO 2 2 ：55～60％、Al 2 O 3 :21 to 24%, alkaline earth metal oxide: 0.2 to 1%, alkali metal oxide: 6.0 to 8.0 percent of ZrO 2 ：6.0～10.0％。
Preferably, the specific gravity of the ground glaze is 1.25-1.40 g/cm 3 The application amount is 300-650 g/m 2 。
Preferably, the chemical composition of the protective glaze comprises: by mass percent, siO 2 ：43～48％、Al 2 O 3 :21 to 23%, alkaline earth metal oxide: 13 to 16%, alkali metal oxide: 4.0 to 6.0%, znO:5.0 to 6.0 percent.
Preferably, the specific gravity of the protective glaze is 1.20-1.30 g/cm 3 The application amount is 150 to 200g/m 2 。
Preferably, the melting start temperature of the transmutation glaze is 1080-1130 ℃; the initial melting temperature of the protective glaze is 1100-1150 ℃; preferably, the initial melting temperature difference of the transmutation glaze and the protective glaze is controlled to be 20-50 ℃.
Preferably, the maximum firing temperature is 1180-1220 ℃, and the firing period is 60-180 minutes.
In a second aspect, the present invention provides a digital relief ceramic rock plate obtained by any one of the above preparation methods. The specification of the digital relief ceramic rock plate can be 600-1800 mm wide, 1200-9000 mm long and 6-20 mm thick.
Drawings
FIG. 1 is a flow chart of the preparation of a digital embossed ceramic rock plate;
FIG. 2 is a file effect diagram of an ink jet printed transmutation glaze for a digital embossed ceramic rock plate;
fig. 3 is a plate surface effect diagram of the digital relief ceramic rock plate.
Detailed Description
The present invention is further illustrated by the following examples, which are to be construed as merely illustrative, and not a limitation of the present invention. Unless otherwise specified, each percentage means a mass percentage.
The following is an exemplary description of the method for preparing the digital relief ceramic rock plate according to the present invention.
Preparing a ceramic rock plate blank. The ceramic rock plate blank may be prepared by dry press forming. The chemical composition of the ceramic rock plate blank is not limited, and the ceramic rock plate blank formula commonly used in the field can be adopted. In some embodiments, the ceramic rock plate blank has a chemical composition comprising: by mass percent, siO 2 ：62～67％、Al 2 O 3 :20 to 25%, alkaline earth metal oxide: 0.2 to 2.0%, alkali metal oxide: 4.0 to 7.0 percent. For example, the chemical composition of the ceramic rock plate blank includes: by mass percent, siO 2 ：62～67％、Al 2 O 3 ：20～25％、Fe 2 O 3 ：0.06～0.10％、TiO 2 ：0.1～0.5％、CaO：0.1～0.5％、MgO：0.1～1.0％、K 2 O：2.0～3.0％、Na 2 O: 2.5-3.5%, loss on ignition: 4.5 to 6.5 percent.
The ceramic rock plate blank is dried. Drying in a drying kiln may be used. The drying time can be 1-1.5 h, and the moisture of the dried blank is controlled within 0.3-0.5 wt%.
And applying base coat on the surface of the dried blank. The function is to cover the base color and flaws of the blank body and promote the color development of the ink-jet pattern.
The ground glaze comprises the following chemical components in percentage by mass: siO 2 2 ：55～60％、Al 2 O 3 :21 to 24%, alkaline earth metal oxide: 0.2 to 1%, alkali metal oxide: 6.0 to 8.0 percent of ZrO 2 :6.0 to 10.0 percent. For example, the chemical composition of the under-glaze may include, in mass percent: siO 2 2 ：55～60％、Al 2 O 3 ：21～24％、Fe 2 O 3 ：0.16～0.46％、TiO 2 ：0.15～0.25％、CaO：0.1～0.3％、MgO：0.1～0.3％、K 2 O：4.0～5.0％、Na 2 O：2.0～3.0％、ZrO 2 : 6.0-10.0%, loss on ignition: 3.0 to 4.0 percent.
The application mode of the ground coat is glaze spraying. The specific gravity of the ground glaze is 1.25-1.40 g/cm 3 The application amount is 300-650 g/m 2 . The temperature of the green body discharged from the drying kiln is higher, and the glazing parameters of the ground coat are controlled in the range, so that the board surface can be smoother after glaze spraying, and the subsequent relief effect can be highlighted. If the application amount of the ground coat is less than 300g/m 2 In addition, the temperature is higher before the green brick is sprayed with glaze, the glaze dries too fast on the board surface, and atomized liquid drops form an uneven rough effect on the brick surface after glaze spraying. The application amount of the ground coat is more than 650g/m 2 The glaze dries too slowly on the plate surface, and the vibration generated in the operation process of the glaze line equipment easily causes local glaze flowing to cause uneven glaze surface.
And (4) carrying out ink-jet printing on the surface of the blank body after the ground coat is applied. The color and pattern of the ink jet printed pattern are adaptively changed depending on the design effect.
And positioning the ink-jet printing transmutation glaze on the surface of the blank after the pattern is printed by ink-jet printing to form the relief texture with the crystal flower effect. This provides a relief effect to the layout while also increasing the aesthetic appeal of the layout. The positioning finger can adjust the transmutation glaze file for digital printing according to the actual requirements and the texture adaptability of the ink-jet printing pattern so as to realize the corresponding local decoration effect. Selecting a file for digital printing according to the pattern texture is a known operation in the art, is not an innovative point of the technical scheme, and is not described herein again. Fig. 2 shows the generation of a transmutation glaze printed file from which the desired texture is extracted according to the ink-jet printed pattern, achieving a digital relief transmutation decorative effect at a specific location.
The chemical composition of the transmutation glaze comprises the following components: by mass percent, siO 2 ：40～45％、Al 2 O 3 :14 to 18%, alkaline earth metal oxide: 23 to 29%, alkali metal oxide: 2.5-4.5% of ZrO 2 :5.0 to 7.0%, F:2.0 to 3.0 percent. The transmutation glaze is prepared by mixing SiO 2 、Al 2 O 3 Other flux is controlled within the range, so that the glaze material has proper high-temperature viscosity under the prior firing system, and mutual fusion can be generatedSimilar to the transmutation effect.
In some embodiments, the chemical composition of the transmutation glaze includes: by mass percent, siO 2 ：40～45％、Al 2 O 3 ：14～18％、Fe 2 O 3 ：0.1～0.5％、TiO 2 ：0.1～0.5％、CaO：14～16％、MgO：4.5～6.5％、K 2 O：1.0～2.0％、Na 2 O：1.5～2.5％、ZrO 2 :5.0 to 7.0%, baO:4.5 to 6.5%, F: 2.0-3.0%, loss on ignition: 3.0 to 5.0 percent.
The transmutation glaze incorporates zirconia by using zirconium silicate. The zirconium silicate and other compositions of the transmutation glaze are fused with each other, particularly the compositions which form an amorphous phase and influence the high-temperature viscosity of the transmutation glaze, so that the transmutation effect is similar. And coloring oxides can be added into the transmutation glaze to carry out color decoration, so that different colors can be formed after the transmutation glaze is fired. Colored oxides include, but are not limited to, coO, cuO, mnO, niO, and the like.
The number of printing channels of the ink-jet printing transmutation glaze is preferably 2-3, so that better printing state and application amount are ensured.
The specific gravity of the transmutation glaze is 1.60-1.80 g/cm 3 . The control of the specific gravity of the devitrified glaze within the above range is mainly in consideration of the state of the inkjet printing. Glaze with too high specific gravity dries too fast and is easy to agglomerate at a spray head to influence printing. Glaze is easy to drip when the specific gravity is too low, namely, the viscosity of the glaze is reduced due to higher moisture content, and when the negative pressure of the spray head reaches the upper limit, the viscosity is too low, so that the glaze drips out of the spray head. The application amount of the transmutation glaze is 100-400 g/m 2 . The application amount of the transmutation glaze is too low, and the transmutation effect is not obvious. However, the (local) application amount of the transmutation glaze is too high, and the glaze material easily flows to the area where the transmutation glaze is not needed in the melting process, so that the plate surface decoration is not fine.
The relief effect is formed by positioning the ink-jet printing and applying the kiln-transmutation glaze so as to promote the difference of the stacking thickness of the glaze at different positions. The melting starting temperature of the transmutation glaze is preferably 1080-1130 ℃. The initial melting temperature and the high-temperature viscosity (the initial melting temperature influences the high-temperature viscosity) of the transmutation glaze cannot be too low, otherwise, the flowing glaze is easy to appear, and the relief effect is not three-dimensional. The specific gravity and the application amount of the transmutation glaze are relatively high, and the relief and crystal flower effects are more obvious.
The ink for ink-jet printing is not suitable for the invention, mainly because the main component of the ink for transmutation is zinc oxide, and the zinc oxide is usually used as a nucleating agent and is difficult to form crystal flowers under the condition of not matching with the zinc-titanium glaze. And the application amount of the transmutation ink is generally low, so that the three-dimensional relief decoration cannot be formed. Although there may be some transmutation effect by conventional showering or spraying crystalline glaze, the local positioning relief effect as in the present invention cannot be achieved due to full-scale glazing.
And applying protective glaze on the surface of the blank after ink-jet printing and transmutation glaze. The aim is to protect the pattern from abrasion and to provide excellent anti-soiling properties.
The chemical composition of the protective glaze comprises: by mass percent, siO 2 ：43～48％、Al 2 O 3 :21 to 23%, alkaline earth metal oxide: 13 to 16%, alkali metal oxide: 4.0 to 6.0%, znO:5.0 to 6.0 percent. In some embodiments, the chemical composition of the protective glaze comprises: in terms of mass percent, siO 2 ：43～48％、Al 2 O 3 ：21～23％、Fe 2 O 3 ：0.1～0.5％、TiO 2 ：0.1～0.5％、CaO：12.5～13.5％、MgO：1.0～2.0％、K 2 O：0.8～1.3％、Na 2 O:3.5 to 4.5%, znO: 5.0-6.0%, loss on ignition: 5.5 to 6.5 percent.
The initial melting temperature of the protective glaze is 1100-1150 ℃. Preferably, the initial melting temperature difference between the transmutation glaze and the protective glaze is controlled to be between 20 and 50 ℃, so that the crystal patterns and the relief effect generated by the transmutation glaze can be prevented from being weakened by the protective glaze on the upper layer.
The protective glaze is applied in a glaze spraying manner. The specific gravity of the protective glaze is 1.20-1.30 g/cm 3 The application amount is 150 to 200g/m 2 . Too high an application amount of the protective glaze can affect the transmutation and the relief stereoscopic effect. The main reason is that the firing temperature and high-temperature viscosity of the protective glaze are high, the excessive protective glaze can be mutually interwoven with the transmutation glaze at the lower layer in the firing process to influence the crystal pattern effect of transmutation, and in addition, the excessive protective glaze can be mutually interwoven with the transmutation glaze at the lower layer in the firing process to further influence the crystal pattern effect of the transmutationThe external excessive protective glaze can also reduce the thickness difference of glaze layers at the positions where the locally deposited transmutation glaze and the non-deposited transmutation glaze are deposited because the glaze materials are mutually fused, so that the relief texture is weakened or the stereoscopic impression is lost.
And drying the blank body after the protective glaze is applied. Either electric drying or hot air oven drying may be used. The drying temperature is 100-150 ℃, and the moisture of the dried blank is controlled within 0.9 wt%.
And (5) firing. The maximum firing temperature can be 1180-1220 ℃, and the firing period can be 60-180 minutes.
According to the preparation method of the digital relief ceramic rock plate, the local relief texture effect is obtained by digitally positioning and printing the transmutation glaze, so that transmutations with different colors are formed, and the decorative effect is rich. In some embodiments, the ceramic slates have a surface gloss of 8 to 50 degrees.
The present invention will be described in further detail with reference to examples. It is also to be understood that the following examples are illustrative of the present invention and are not to be construed as limiting the scope of the invention, and that certain insubstantial modifications and adaptations of the invention by those skilled in the art may be made in light of the above teachings. The specific process parameters and the like of the following examples are also only one example of suitable ranges, i.e., those skilled in the art can select the appropriate ranges through the description herein, and are not limited to the specific values exemplified below.
Example 1
The preparation method of the digital relief ceramic rock plate comprises the following steps:
step 1, preparing a ceramic rock plate blank through dry pressing;
step 2, drying the blank for 1-1.5 h, wherein the water content of the dried blank is 0.3-0.5 wt%;
step 3, spraying base glaze on the surface of the dried blank; the chemical composition of the ground glaze comprises: by mass percent, siO 2 ：55～60％、Al 2 O 3 ：21～24％、Fe 2 O 3 ：0.16～0.46％、TiO 2 ：0.15～0.25％、CaO：0.1～0.3％、MgO：0.1～0.3％、K 2 O：4.0～5.0％、Na 2 O：2.0～3.0％、ZrO 2 : 6.0-10.0%, loss on ignition: 3.0 to 4.0 percent; the specific gravity of the ground coat is 1.25-1.40 g/cm 3 The application amount is 300-650 g/m 2 ；
Step 4, ink-jetting and printing patterns on the surface of the blank body after the ground glaze is sprayed;
step 5, ink-jet printing of the transmutation glaze on the surface of the blank after ink-jet printing of the pattern; the chemical composition of the transmutation glaze comprises: in terms of mass percent, siO 2 ：40～45％、Al 2 O 3 ：14～18％、Fe 2 O 3 ：0.1～0.5％、TiO 2 ：0.1～0.5％、CaO：14～16％、MgO：4.5～6.5％、K 2 O：1.0～2.0％、Na 2 O：1.5～2.5％、ZrO 2 :5.0 to 7.0%, baO:4.5 to 6.5%, F: 2.0-3.0%, loss on ignition: 3.0 to 5.0 percent; the specific gravity of the transmutation glaze is 1.60-1.80 g/cm 3 The application amount is 100 to 400g/m 2 ；
Step 6, spraying protective glaze on the surface of the blank after the ink-jet printing transmutation glaze; the chemical composition of the protective glaze comprises: by mass percent, siO 2 ：43～48％、Al 2 O 3 ：21～23％、Fe 2 O 3 ：0.1～0.5％、TiO 2 ：0.1～0.5％、CaO：12.5～13.5％、MgO：1.0～2.0％、K 2 O：0.8～1.3％、Na 2 O:3.5 to 4.5%, znO: 5.0-6.0%, loss on ignition: 5.5 to 6.5 percent; the specific gravity of the protective glaze is 1.20-1.30 g/cm 3 The application amount is 150-200 g/m 2 ；
Step 7, drying the blank body sprayed with the protective glaze, wherein the drying temperature is 100-150 ℃, and the moisture of the dried blank body is controlled within 0.9 wt%;
step 8, sintering, wherein the maximum sintering temperature is 1220 ℃, and the sintering period is 60-120 minutes;
and 9, edging, grading, packaging and warehousing.
Figure 3 shows that the digital relief ceramic rock plate has the fambe crystal flower decoration and the three-dimensional relief texture.
Comparative example 1
The preparation method of the ceramic rock plate comprises the following steps:
step 1, preparing a ceramic rock plate blank through dry pressing;
step 2, drying the blank for 1-1.5 h, wherein the water content of the dried blank is 0.3-0.5 wt%;
step 3, spraying base glaze on the surface of the dried blank; the ground glaze comprises the following chemical components: by mass percent, siO 2 ：55～60％、Al 2 O 3 ：21～24％、Fe 2 O 3 ：0.16～0.46％、TiO 2 ：0.15～0.25％、CaO：0.1～0.3％、MgO：0.1～0.3％、K 2 O：4.0～5.0％、Na 2 O：2.0～3.0％、ZrO 2 : 6.0-10.0%, loss on ignition: 3.0 to 4.0 percent; the specific gravity of the ground coat is 1.25-1.40 g/cm 3 The application amount is 300 to 650g/m 2 ；
Step 4, ink-jet printing patterns on the surface of the blank body after the ground coat is sprayed;
step 5, sequentially applying first transmutation glaze and second transmutation glaze on the surface of the blank after the pattern is printed by ink jet; the application modes of the first transmutation glaze and the second transmutation glaze are both ink-jet printing; the chemical composition of the first transmutation glaze comprises: by mass percent, siO 2 ：48～55％、Al 2 O 3 ：9.0～13％、Fe 2 O 3 ：0.1～0.5％、TiO 2 ：3.0～7.0％、CaO：4.0～7.0％、MgO：1.0～2.0％、K 2 O：4.0～5.0％、Na 2 O:3.0 to 4.0%, znO:9.0 to 12.0%, baO: 1.5-2.5%, loss on ignition: 5.5 to 6.5 percent; the specific gravity of the first transmutation glaze is 1.60-1.80 g/cm 3 The application amount is 100 to 400g/m 2 (ii) a The chemical composition of the second transmutation glaze comprises: by mass percent, siO 2 ：45～50％、Al 2 O 3 ：8.0～12.0％、Fe 2 O 3 ：0.1～0.5％、TiO 2 ：8.0～12.0％、CaO：4.0～7.0％、MgO：1.0～2.0％、K 2 O：3.0～4.0％、Na 2 O：3.0～4.0％、ZnO：10.0～14.0％、ZrO 2 : 3.0-5.0%, loss on ignition: 2.5 to 4.5 percent; the specific gravity of the second transmutation glaze is 1.60-1.80 g/cm 3 The application amount is 100 to 400g/m 2 ；
Step 6, spraying protective glaze on the surface of the blank body after the first transmutation glaze and the second transmutation glaze are applied; the chemical composition of the protective glaze comprises: in terms of mass percent, siO 2 ：43～48％、Al 2 O 3 ：21～23％、Fe 2 O 3 ：0.1～0.5％、TiO 2 ：0.1～0.5％、CaO：12.5～13.5％、MgO：1.0～2.0％、K 2 O：0.8～1.3％、Na 2 O:3.5 to 4.5%, znO: 5.0-6.0%, loss on ignition: 5.5 to 6.5 percent; the specific gravity of the protective glaze is 1.20-1.30 g/cm 3 The application amount is 150-200 g/m 2 ；
Step 7, drying the blank body sprayed with the protective glaze at the drying temperature of 100-150 ℃, and controlling the moisture of the dried blank body within 0.9 wt%;
step 8, sintering, wherein the maximum sintering temperature is 1220 ℃, and the sintering period is 60-120 minutes;
and 9, edging, grading, packaging and warehousing.
Due to Al of the first transmutation glaze and the second transmutation glaze 2 O 3 The content is low, the content of other fluxing agents is high, and the relief effect of the brick surface after firing is not obvious.
Comparative example 2
The preparation method of the ceramic rock plate comprises the following steps:
step 1, preparing a ceramic rock plate blank through dry pressing;
step 2, drying the blank for 1-1.5 h, wherein the water content of the dried blank is 0.3-0.5 wt%;
step 3, spraying base coat on the surface of the dried blank; the chemical composition of the ground glaze comprises: in terms of mass percent, siO 2 ：55～60％、Al 2 O 3 ：21～24％、Fe 2 O 3 ：0.16～0.46％、TiO 2 ：0.15～0.25％、CaO：0.1～0.3％、MgO：0.1～0.3％、K 2 O：4.0～5.0％、Na 2 O：2.0～3.0％、ZrO 2 : 6.0-10.0%, loss on ignition: 3.0 to 4.0 percent; the specific gravity of the ground coat is 1.25-1.40 g/cm 3 The application amount is 300-650 g/m 2 ；
Step 4, ink-jet printing patterns on the surface of the blank body after the ground coat is sprayed;
step 5, ink-jet printing of the transmutation glaze on the surface of the blank after ink-jet printing of the pattern; the chemical composition of the transmutation glaze comprises the following components: by mass percent, siO 2 ：40～45％、Al 2 O 3 ：14～18％、Fe 2 O 3 ：0.1～0.5％、TiO 2 ：0.1～0.5％、CaO：14～16％、MgO：4.5～6.5％、K 2 O：1.0～2.0％、Na 2 O：1.5～2.5％、ZrO 2 :5.0 to 7.0%, baO:4.5 to 6.5%, F: 2.0-3.0%, loss on ignition: 3.0 to 5.0 percent; the specific gravity of the transmutation glaze is 1.60-1.80 g/cm 3 The application amount is 100 to 400g/m 2 ；
Step 6, spraying protective glaze on the surface of the blank after the ink-jet printing transmutation glaze; the chemical composition of the protective glaze comprises: by mass percent, siO 2 ：48～55％、Al 2 O 3 ：13～15％、Fe 2 O 3 ：0.1～0.5％、TiO 2 ：0.1～0.5％、CaO：9.0～12.0％、MgO：2.5～3.5％、K 2 O：2.0～3.0％、Na 2 O:2.0 to 3.0%, znO:2.0 to 3.0%, baO: 3.0-5.0%, loss on ignition: 6.5 to 8.5 percent; the specific gravity of the protective glaze is 1.20-1.30 g/cm 3 The application amount is 150 to 200g/m 2 ；
Step 7, drying the blank body sprayed with the protective glaze at the drying temperature of 100-150 ℃, and controlling the moisture of the dried blank body within 0.9 wt%;
step 8, sintering, wherein the maximum sintering temperature is 1220 ℃, and the sintering period is 60-120 minutes;
and 9, edging, grading, packaging and warehousing.
The relatively low-temperature protective glaze in the comparative example has a certain fluxing action on the transmutation glaze, so that the transmutation glaze is partially melted and flows out of the grain boundary, and the fineness is poor. And the surface gloss of the ceramic rock plate after firing is 85-90 degrees, the surface gloss is higher, people have a very bright feeling, and the artistic aesthetic feeling is reduced.
Claims (7)
1. A preparation method of a digital relief ceramic rock plate is characterized by comprising the following steps:
applying base glaze on the surface of the ceramic rock plate blank;
printing a pattern on the surface of the blank body after the ground coat is applied by ink jet;
positioning the ink-jet printing furnace transmutation glaze on the surface of the blank after the pattern is printed by ink-jet printing to form relief texture with crystal flower effect; the chemical composition of the transmutation glaze comprises: by mass percent, siO 2 ：40～45%、Al 2 O 3 :14 to 18%, alkaline earth metal oxide: 23 to 29%, alkali metal oxide: 2.5-4.5% of ZrO 2 :5.0 to 7.0%, F:2.0 to 3.0 percent; the specific gravity of the transmutation glaze is 1.60-1.80 g/cm 3 The application amount is 100 to 400g/m 2 ；
Applying a protective glaze on the surface of the blank after the ink-jet printing transmutation glaze; the chemical composition of the protective glaze comprises: by mass percent, siO 2 ：43～48%、Al 2 O 3 :21 to 23%, alkaline earth metal oxide: 13 to 16%, alkali metal oxide: 4.0 to 6.0%, znO:5.0 to 6.0 percent; the specific gravity of the protective glaze is 1.20-1.30 g/cm 3 The application amount is 150 to 200g/m 2 ；
And (5) firing.
2. The method according to claim 1, characterized in that the chemical composition of the under-glaze comprises: the weight percentage is as follows: siO 2 2 ：55～60%、Al 2 O 3 :21 to 24%, alkaline earth metal oxide: 0.2 to 1%, alkali metal oxide: 6.0 to 8.0 percent of ZrO 2 ：6.0～10.0%。
3. The method according to claim 1, wherein the ground glaze has a specific gravity of 1.25 to 1.40g/cm 3 The application amount is 300 to 650g/m 2 。
4. The preparation method according to claim 1, wherein the melting start temperature of the transmutation glaze is 1080-1130 ℃; the initial melting temperature of the protective glaze is 1100-1150 ℃.
5. The method according to claim 4, characterized in that the difference between the onset temperatures of the transmutation glaze and the protective glaze is controlled to be 20-50 ℃.
6. The process according to claim 1, wherein the maximum firing temperature is 1180 to 1220 ℃ and the firing period is 60 to 180 minutes.
7. The digital relief ceramic rock plate obtained by the production method according to any one of claims 1 to 6.
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