33results about How to "Glaze surface hardness is high" patented technology

The present invention relates to ceramic product, and is especially one kind of in-glaze color decorated daily use porcelain product and its production process. The materials for the in-glaze color decorated daily use porcelain include Longyan clay, weathered potash feldspar, Jiepai clay, potash feldspar, calcined alumina, Guizhou clay and quarztz. The production process of the in-glaze color decorated daily use porcelain product includes the steps of making biscuit, preparing glaze and in-glaze color paper, glazing the biscuit, firing biscuit, adhering the in-glaze color paper, and baking to obtain the product. The in-glaze color decorated daily use porcelain has rich bright colors, smooth and fine glaze surface, low Pb and Cd leaching out amount, high strength, and other advantages.

The invention discloses a zirconium-free spinel crystalline opaque glaze and a manufacturing method. The zirconium-free spinel crystalline opaque glaze comprises the following components in percentages by mass: 1-5% of Na2O, 1-5% of K2O, 20-25% of Al2O3, 2-6% of CaO, 7-15% of MgO, 5-8% of ZnO, 2-6% of B2O3, and the balance being SiO2. The glaze layer of the zirconium-free spinel crystalline opaque glaze precipitates (Mg,Zn)Al2O4 spinel crystal, the crystal grain size is 300-1000nm, the crystal has high scattering effects for visible light, in order to reach whiteness of common zirconium white fritted glaze, and improve hardness, wear resistance and mar-resistance of glaze. The product does not contain zircon sand and any radioactive elements, and has low cost and good milky white effects; the production technology is completely identical to the production technology of zirconium opaque fritted glaze, and the production cost is reduced.

The invention discloses an anorthite micro-crystal transparent glaze and a preparation method thereof, and relates to a ceramic-used glaze material. The anorthite micro-crystal transparent glaze comprises the following ingredients by mass percentage: 1%-5% of Na2O, 1%-5% of K2O, 12%-18% of Al2O3, 15%-20% of CaO, 2%-5% of MgO, 2%-7% of ZnO, 2%-7% of high-boron frit and the balance of SiO2. The fineness of the glaze material is less than 0.15% as the residue of a 250-mesh sieve; the preparation method comprises the following technological processes: testing raw materials, matching the raw materials, ball-milling, detection, milling out, sieving, adjusting the density of glaze slip to 1.35-1.4g / cm<3>, glazing, sintering and obtaining a finished product. A sintering system is described as follows: preserving heat at the temperature of 1,200-1,210 DEG C for 30-40min, cooling to the temperature of 860-880 DEG C and preserving heat for 30-40 min. Anorthite crystals grow on a glaze surface of the anorthite micro-crystal transparent glaze prepared by the invention, so that the hardness, wear resistance, mar-resistance and corrosion resistance of the glaze surface are improved, and the defect that scratches are easily caused on the glaze surface of the transparent glaze is overcome.

The invention belongs to the technical field of firing ceramics, in particular to a firing process for strengthening enamel bone china. Its characteristics are: after the blank is formed, it is polished smooth after biscuit firing at 780-800°C, then glazed, and then the glaze on the edge and bottom edge is removed; when loading the blank, the edge of the product with the glaze removed In the groove of the shaped pad cake, put the billets into the kiln together, and use the reduction flame for the first firing, and the firing temperature is 1330-1350°C. The shaped pad cake is made of the same mud as the product. A groove pad cake made of mud that completely matches the edge of the finished product; after firing and cooling, the porcelain is selected and graded, and the colored flowers in the glaze are pasted. Secondary firing in a weak reducing atmosphere, that is, firing the in-glaze color at the same time as the second mouth glaze firing. The strengthened enamel bone china of the invention has the characteristics of good whiteness, good translucency, good heat stability, high glaze hardness, no lead cadmium dissolution and the like.

The invention discloses a processing method of nitride ceramic glaze and relates to the field of ceramic processing. The nitride ceramic glaze is prepared by adopting a raw material which takes limestone, kaolin, silicon nitride, calcium carbonate, zirconium oxide and aluminum nitride as basic materials, and a raw material which takes borax, mica, potassium feldspar and quartz as a wear-resistingagent, has good elasticity and wear resistance and has a good melting property; the nitride ceramic glaze has no toxin and no pollution and the product performance index of the ceramic glaze is comprehensively improved. Compared with common ceramic glaze, the nitride ceramic glaze has the advantages that the rigidity of a glaze surface is improved by 38 percent, ultrahigh wear-resisting performance is realized and fatal defects that the ceramic glaze has poor wear resistance and is easy to scratch are perfectly solved.

The invention relates to polycrystal intensified ceramic manufacturing technology that belongs to ceramic manufacturing technology field. It adopts common kaolin as main raw material. The main constituents of the ingot is 52-60% SiO2, 15-22% Al2O3, 15-21% MgO, 0.5-2% ZnO, 3-5% ZrO2, 0.5-3% BaO, and the other 1-3%. 3-5% Al2O3 crystal whisker and 1-2% ZrO crystal whisker are induced into the ingot, and 5-10% nm SiO2 and 1-2% ZnO are induced into glaze material. After the process of modifying the raw material, mixing and grinding, filtering to remove iron, filtering mire, drilling mire, banalitying, molding, drying, glazing, drying, sintering, checking and packaging, the common kaolin is modified to have 43-52% SiO2, 32-38% Al2O3. The invention could produce high level ceramic.

The invention discloses a method for preparing a ceramic glaze layer of a foamed ceramic thermal insulation and veneer integrated board, which belongs to the technical field of energy saving and environmental protection. The preparation method comprises the following steps: 1) cutting the foamed ceramic thermal insulation thick plate prepared by high-temperature foaming in the kiln into foamed ceramic thermal insulation veneers; The single surface of the foamed ceramic thermal insulation veneer is baked at a temperature of 220-420 °C to obtain the decorative base layer of the foamed ceramic thermal insulation veneer integrated board, and the thickness of the decorative base layer is 1.2-1.8mm; 3) Then Spray or roller coat the finishing glaze layer material on the surface of the facing base layer, and bake at a temperature of 80-220° C.; the thickness of the finishing glaze layer of the foamed ceramic thermal insulation and facing integrated board is 30-60 μm. The preparation method avoids the deformation of the ceramic thermal insulation veneer; and increases the adhesion between the decorative surface and the foamed ceramic thermal insulation substrate, and also saves energy and increases production capacity.

The invention discloses a preparation method of a ceramic glaze layer of a foamed ceramic insulating veneer integral plate, and belongs to the technical field of energy saving and environmental protection. The preparation method comprises the following steps: 1) cutting a foamed ceramic insulating thick plate prepared by high temperature foaming in a kiln into a foamed ceramic insulating single plate; 2) spraying and rolling a ceramic material of the veneer base layer on single surface of the foamed ceramic insulating single plate in the step 1), and baking at the temperature of 220-420 DEG Cto obtain a veneer base layer of the foamed ceramic insulating veneer integral plate, wherein the thickness of the veneer base layer is 1.2-1.8 mm; and 3) spraying or roll-coating the surface of the veneer base layer with a veneer glaze layer material, and baking at the temperature of 80-220 DEG C, wherein the thickness of the obtained ceramic glaze layer of the foamed ceramic insulating veneer integral plate is 30-60 [mu]m. The preparation method avoids the deformation of the ceramic insulating single plate, the adhesion force between the veneer and the foamed ceramic insulating substrate isincreased, the energy is saved and the production capacity is increased.

The invention discloses a high-permeability high-whiteness high-strength eggshell porcelain plate which is characterized by comprising the following natural ore raw materials and industrial chemical raw materials in percentage by weight: 30-35% of Longyan kaolin, 10-12% of quartz, 5-8% of aluminum oxide, 30-35% of feldspar, 4-6% of talc, 1%b of calcite, 2-5% of potassium feldspar, 1-2% of albite,8% of bone meal and 3-5% of yttrium oxide, and a product of the eggshell porcelain plate is prepared through procedures of washing, blending, ball milling, addition of 4% of external porcelain powder,deironing, filtration, slurry treatment, molding, primary drying, blank trimming, biscuiting, refining, glazing, secondary drying and glaze firing. By controlling formula and molding processors, theproblems of whiteness, transparency, glaze surface hardness and flatness of the product can be solved, and the obtained high-permeability high-whiteness high-strength eggshell porcelain plate productcan be used as decorative lamp shades in families, offices, indoor places and the like, and has wide application prospects.

A method for preparing a carbon-golden metallic luster crystalline glaze. The source and composition of the glaze are (parts by mass): 25-30 parts of MnO2 are used as crystallization agents, 0.5-1.5 parts of MoO2 and 0.5-1.5 parts of V2O5 are used as crystals Accelerator, 2-4.5 parts of CuO, 2.5-5 parts of Fe2O3, 3-7 parts of ZnO and 0.5-2.5 parts of NiO and various metal oxides are used as colorants, and other ingredients are 30-38 parts of Pingjiang Potassium Feldspar, 5-12 parts of quartz produced in Fengyang, 5-10 parts of talc powder produced in Wuxi and 5-12 parts of boron frit produced in Yixing. After the glaze slurry is prepared and applied to the biscuit body, the temperature curve of the present invention is used for glaze firing. With a charcoal gold metallic luster and iridescent effect and crystal beauty. In addition, it has low cost, high glaze hardness, good wear resistance and corrosion resistance. It is a brand-new ceramic art glaze and can be used to decorate ceramic handicrafts.

The invention relates to a far-infrared autogeneous glazed bone china with high utilization of desert materials and a preparation process thereof, which comprises the following raw materials in weight percentage: sand grains taken from desert: 50%-60%; pyrophyllite: 10%-20% ; Purple wood knot: 8%~15%; Coal gangue: 10%~18%; Magnesium-based bentonite: 2%~4%; Potassium feldspar: 4%~8%; Albite feldspar: 4%~8%; Spodumene: 2%~5%; zirconium silicate: 3%~5%; wollastonite: 4%~6%; the production process of the bone china includes the following steps: formula ingredients, ball milling, sieving, Iron removal, pressure filtration, first mud refining, second mud refining and finalized firing; the autogenous glazed bone china prepared by the invention has good toughness and high strength, good thermal stability, and is suitable for rapid cooling and rapid drying. In a hot environment, it has better emissivity and wide frequency spectrum.

The invention relates to a method for firing a domestic porcelain, in particular to the method for firing high-grade domestic porcelains, such as bowels and cups. The method comprises the following steps of: 1, drying a finished body, placing the body into a kiln to perform biscuit firing at the low temperature of 800 to 900 DEG C, and polishing the biscuit-fired body to smooth; 2, glazing the biscuit-fired body and removing glaze at the mouth rim and foot of the product; 3, directly placing the product on a refractory slab in a reversing way for primary high-temperature glaze firing; and 4, turning the product over, cleaning and partially glazing the mouth rim of the product, placing the product into the kiln again in an erecting way for secondary high-temperature glaze firing, and cooling the product to obtain the finished product. Compared with the conventional low-temperature biscuit-firing high-temperature glaze-firing method or high-temperature biscuit-firing low-temperature glaze-firing method, the method is convenient to operate, ensures the light weight and high superior quality rate of the fired finished product, and is very applied to the production of various high-grade domestic porcelain products, such as the bowels and the cups.

The invention belongs to the technical field of preparation of jun porcelain glaze, and particularly relates to copper-based golden red glaze and a preparation method thereof.The copper-based golden red glaze is prepared from, by weight, 48%-50% of melilite, 16%-20% of white feldspar, 16%-18% of calcite, 8%-10% of quartz, 2%-4% of copper ore, 2%-4% of ZnO, 0.5%-1.5% of SnO2 and 0.4%-0.6% of CuO; the preparation method of the copper-based golden red glaze comprises the following steps: (1) burdening: weighing various raw materials according to the proportion; (2) preparing glaze slip: adding various raw materials into a ball mill, and adding water for ball milling to obtain the glaze slip; (3) glazing: uniformly stirring the glaze slip, and putting a green body which is subjected to biscuit firing and has a clean surface into the glaze slip for glaze dipping; and (4) firing: firing the glazed green body in a kiln. The prepared copper-based golden red glaze is full in glaze color, good in glossiness, high in artistic ornamental value, high in glaze surface hardness, free of cracks, high in yield, low in raw material price and simple in preparation process, large-scale production can be achieved, and the commercial value of the copper-based golden red glaze is improved.

The invention relates to a refractory coating material and a preparation method thereof. The main raw material weight ratio of the coating material is: lepidolite 35-55%, potassium feldspar 5-15%, talcum powder 10-20%, soft clay 15-25%, activated alumina powder 3-7%, quartz powder 5-10%. When preparing this coating material, add sodium carboxymethyl cellulose + 0.3-1.0%, water glass solution + 3-7%, water + 30-40%, stir the above mixture into a uniform slurry, smear or spray On the lining material of the furnace door, after drying, it can be obtained by firing at 1200°C to 1300°C for 4 to 12 hours. The invention provides a coke oven door refractory coating material with remarkable anti-carbonization effect and long-term durability and its preparation method. The coating material is close to the matrix material in composition and has similar thermal expansion performance, so it is not easy to use in use. Flaking can be pre-fired in advance or directly form a glaze during use, which reduces the labor intensity of workers and environmental pollution during carbon removal.

The present invention relates to ceramic product, and is especially one kind of in-glaze color decorated daily use porcelain product and its production process. The materials for the in-glaze color decorated daily use porcelain include Longyan clay, weathered potash feldspar, Jiepai clay, potash feldspar, calcined alumina, Guizhou clay and quarztz. The production process of the in-glaze color decorated daily use porcelain product includes the steps of making biscuit, preparing glaze and in-glaze color paper, glazing the biscuit, firing biscuit, adhering the in-glaze color paper, and baking to obtain the product. The in-glaze color decorated daily use porcelain has rich bright colors, smooth and fine glaze surface, low Pb and Cd leaching out amount, high strength, and other advantages.