30 results about "Glaze defects" patented technology

A mosaic ceramic tile and its preparation device and method, the device includes a positioning baffle, a baffle support, a conveyor belt, an inkjet printer and a screen printing machine. The steps of using the device to prepare mosaic ceramic tiles include: A. Press the ceramic powder to form adobe, and pour the bottom glaze; B. The adobe after step A is positioned through the positioning baffle; C. The adobe after step B enters the inkjet printer for light-color inkjet printing decoration to form an inkjet printing decoration area; D. The adobe after step C enters the screen printing machine for dark-color overcolor screen printing decoration to form a screen printing decoration area; E. Firing into shape. The mosaic ceramic tile prepared by using the device and method of the present invention avoids the defects of poor product integrity, easy damage, and large waste caused by the bonding and splicing of different products after water jet cutting, and also avoids the use of multiple products. The production of mosaic ceramic tiles by sub-screen printing brings about poor controllability and many glaze defects. At the same time, glaze is saved, the product has high repeatability, the design and color are easy to adjust, and the production change is fast.

The invention discloses a stripping glaze, a stripping-glaze marble ceramic tile without glaze defects and a preparation process of the marble ceramic tile. The stripping glaze comprises the followingraw materials in percentage by mass: 18-22% of potassium feldspar, 4-6% of water washed ball clay, 25-30% of quartz, 25-30% of wollastonite, 5-8% of limestone, 5-8% of zinc oxide and 10-12% of corundum powder. According to the stripping glaze used for preparing the stripping-glaze marble tile provided by the invention, the high-temperature viscosity of the stripping glaze in a high-temperature molten state is improved, and therefore the stripping-glaze marble tile without the glaze defects and of which glaze stripping effects are more vivid and natural is obtained by adopting a glaze sprayingmode.

A method for detecting glaze shrinkage defects of sanitary ceramic products is disclosed. The detection method for glaze shrinkage defects of sanitary ceramic products compares the change of the distance between the two ends of the glazed fan-shaped ring body before and after sintering with the value of the unglazed fan-shaped ring body before and after sintering. The distance between the two ends changes to evaluate the effect of glazing on the sintering shrinkage of the green body. The glaze shrinkage defect detection method of sanitary ceramic products can solve the problem of evaluating the influence of glazing on the sintering shrinkage of the ceramic body in the production process of the ceramic body. In the process, the result of deformation caused by the difference between the deformation stress of the glaze layer and the deformation stress of the body itself is used to match the effect of glazing on the sintering shrinkage of the body to a greater extent in actual production, so as to determine the glaze formula and performance and the body. The matching of the reaction of the body in the firing and heating stage, and the function of detecting the defect risk of the glaze and avoiding the risk in the glaze performance design and production stage.

The invention discloses a glazing method for reducing glaze shrinkage defects on ceramic surfaces. The glazing method comprises the following steps: 1) mixing magnesia, aluminum oxide, chromium oxide,titanium oxide and ceramic blank raw materials, grinding, and carrying out slip casting to obtain ceramic blanks; 2) coating a slurry obtained by ball-milling molybdenum silicide, tantalum silicide,glass powder, silicon boride, ethanol and carboxymethyl cellulose on the surfaces of the ceramic blanks, drying and then carrying out heat treatment; 3) immersing the ceramic blanks into a nano iron oxide dispersion liquid, taking out the ceramic blanks, and irradiating the ceramic blanksby using an ultraviolet lamp; and 4) spraying a glaze on the surfaces of the ceramic blanks for glaze sintering. According to the invention, conventional ceramic blank raw materials and glaze are improved; the surfaces of the green bodies are treated, so that sintered glaze surfaces are uniform in corrugation,high in glossiness and good in thermal stability, meanwhile, the defects of wavy lines, cracks, pinholes, even deglazing and the like of the glaze surfaces can be well eliminated, the integrity of the glaze surfaces is improved, and the product quality is obviously improved.

The invention discloses a bottom glaze and a preparation method thereof, a black ink-jet ceramic tile and a production method thereof. The raw material composition of the bottom glaze includes, in terms of mass fractions, 5 parts of kaolin, 33 parts of potassium feldspar, 28 parts of albite, 10 parts of quartz powder, 10 parts of zirconium silicate, 7 parts of talcum powder, and 7 parts of 965 frit; the chemical composition of the 965 frit includes: SiO 2 49.97%, Al 2 o 3 16.96%, Fe 2 o 3 0.14%, TiO 2 0.05%, CaO 12.71%, MgO 1.41%, K 2 O 4.03%, Na 2 O 12.57%, ZnO 0.37%, B 2 o 3 0.18%, BaO 0.83%, loss on ignition 0.78%. By controlling the addition of kaolin, the penetration depth of the ink is increased, the drying efficiency of the ink is improved, and the glaze avoidance defects after inkjet printing are avoided.

The invention belongs to the technical field of ceramic pigments, and in particular relates to a black pigment for ceramic inkjet printing and its preparation method and application; the parts by weight of each raw material in the black pigment are: 17-35 parts of pre-fired material, Co 3 o 4 25-36 parts for NiO, 30-45 parts for NiO, MnO 2 0-5 parts, Al 2 o 3 0‑4 parts, SrCO 3 0-3 copies, Bi 2 o 3 0‑2 parts and MoO 3 Is 0.5-1.5 part; Wherein, described calcined material is Cr 2 o 3 and Fe 2 o 3 Mixed and fired materials. Through the combination of the above-mentioned raw materials, the black pigment can solve the problems of unstable color development and glaze defects (such as color difference, yin and yang, pinholes, and white spots) after the existing black pigment is made into ink. Effectively improve the color development of black ceramic inks and reduce glaze defects.

The invention discloses a black ink-jet ceramic tile and a manufacturing method thereof. The method comprises pressing the blank to obtain a green body, putting the green body into a drying kiln for drying; The base glaze is obtained to obtain bricks; the first infrared drying is carried out on the bricks after the base glaze is applied, and the temperature is controlled at 230±20°C; the inkjet printing decoration is carried out on the surface of the bricks coated with the base glaze; the second Secondary infrared drying, and the temperature is controlled at 180±10°C; the surface of the dried bricks is fully glazed, fired in a kiln, polished, edged, waxed, and filmed to obtain finished black inkjet ceramic tiles. Through infrared drying, the drying efficiency of glaze and ink is improved, the glaze avoidance defect of dark inkjet products is solved, the labor intensity of workers is reduced, and the quality and production efficiency of black inkjet ceramic tiles are significantly improved.

The invention provides a preparation process of Nixing Jun pottery, which includes preparing a blank, molding the blank, drying the blank, decorating the blank and firing the blank. The decoration of the blank is to apply a layer of low-temperature Glaze; the low-temperature glaze is made of the following raw materials in parts by weight: 50-60 parts of quartz, 6-10 parts of calcite, 8-15 parts of borax, 8-12 parts of feldspar, 2-5 parts of spodumene, cordierite 3 to 5 parts, 1 to 3 parts of copper oxide, 3 to 5 parts of zinc oxide, 2 to 3 parts of Dongni, and 1 to 2 parts of Xini. The sintering temperature of the glaze of the present invention is compatible with the green body, and the expansion coefficient is slightly lower than that of the green body, which can effectively avoid glaze cracking, deglazing and other phenomena. The three-stage firing process can also effectively promote the formation of the intermediate layer of the blank glaze, increase its thickness and density, and make the blank glaze tightly bonded, thereby avoiding defects such as glaze cracking and deglazing.

The invention relates to a porcelain archaized brick with golden glittering effect and a preparation method of the porcelain archaized brick, 880 stamp-pad ink accounting for a large proportion in thegolden glittering glaze can provide a good printing effect, agglomeration of a glittering material is reduced, glaze defects are reduced, the antifouling property is improved, and the glaze melting effect is enhanced; a flashing material A can adjust the flashing effect of the composite glaze; a glittering material B is mainly used for adjusting the high-temperature firing temperature of the composite glaze besides adjusting the glittering effect of the composite glaze, so that complete fusion of the golden glittering glaze and the transparent polished glaze is guaranteed, the smoothness of aglaze surface is kept, and a prepared porcelain archaized brick finished product has antifouling, wear-resisting and durable properties; the porcelain archaized brick has the following characteristics that the printing glittering golden color is combined with the product color and texture, the product has more impact force in level and vision, the pattern level is richer, the texture is more natural, the stereoscopic impression is stronger, and a newly fused glazed product has more transparent three-dimensional stereoscopic impression.