A kind of ceramic powder for 3D printing sanitary ware and ceramic sanitary ware production process

Abstract

The invention relates to a ceramic powder for 3D (three-dimensional) printing sanitary appliance and a ceramic sanitary appliance production process. The ceramic powder comprises, by weight, 7-9 partsof Xingtao sand, 7-9 parts of washing water aluminum sand, 2-4 parts of A-grade black clay, 12-14 parts of Jiangxi porcelain stones, 10-12 parts of pyrophyllite, 10-12 parts of flint clay and 19-21 parts of waste porcelain. A printed ceramic sample is high in strength and accuracy, the ceramic powder and water-based and oil-based resin can be uniformly mixed, solid content is high, layering is avoided, a printed ceramic product is less in defect and high in strength, energy is saved, environments are protected, and design time and cost of the ceramic sample are saved.

Description

technical field [0001] The invention relates to the technical field of 3D printing, in particular to a ceramic powder used for 3D printing sanitary ware and a production process for ceramic sanitary ware. Background technique [0002] Due to the complex shape of ceramic sanitary ware, the traditional molding method is mainly based on grouting molding. The molding process is to make ceramic powder into a fluid slurry, and then inject it into a porous mold. After the water is absorbed by the mold, it will A uniform mud layer with a certain thickness is formed, and a uniform mud layer with a certain thickness is formed at the same time during the dehydration and drying process. However, grouting molding has the following disadvantages: (1) high labor intensity, many operating procedures, and low production efficiency; (2) long production cycle, large area occupied by plaster molds; (3) high water content, low density, shrinkage Large and easily deformed when fired. (4) The mo...

AI Technical Summary

Problems solved by technology

However, grouting molding has the following disadvantages: (1) high labor intensity, many operating procedures, and low production efficiency; (2) long production cycle, large area occupied by plaster molds; (3) high water content, low density, shrinkage Large, easily deformed when fired

(4) Large mold loss

(5) Not suitable for continuous, automated and mechanized production

At present, the technologies that have been applied to ceramic 3D printing include clay extrusion method (LDM), light curing molding method (SLA, DLP) and three-dimensional inkjet printing method (3DP). The clay extrusion method is currently used to prepare traditional daily-use For ceramics such as cups, vases, etc., the performance of the ceramic powder prepared by this method is better, but because the inner diameter of the clay extrusion head is generally 0.4-4mm, undulating stripes can be seen on the surface of the product, the product precision is poor, and the performance of fine structure is not good. Large limitations; the three-dimensional inkjet printing method (3DP, that is, the powder coating method) is currently used for gypsum and coated sand products of inorganic materials, but this method does not need support, and the multi-nozzle and multi-channel design can realize the printing of various materials. Printing is the best way to realize the integration of structure and function, but because the powder in the 3DP printer is loosely spread, the density of the product is relatively low, the porosity is high, and the structural mechanical properties of ceramics are difficult to meet; the light curing molding method ( SLA, DLP) are currently mainly used for the printing of special ceramics such as alumina, zirconia, and bioceramics. It is currently the best 3D printing method for printing ceramic powders. The density can exceed 99%, the forming precision is high and generally can reach 0.02mm or higher, and the speed is fast, but at present, because the ceramic powder used is special ceramic powder such as zirconia and alumina, the cost of light-cured ceramic slurry is high , while the technology of printing with ordinary ceramic sanitary ware powder is rare, and the high plasticity of ordinary ceramic powder makes it difficult to mix with resin, the solid content is difficult to increase, and the strength of the printed product is low

[0004] Patent application number (CN 105566860A) titled "a ceramic powder for 3D photo-curing molding and its preparation method" discloses a ceramic powder for 3D photo-curing molding and printing, which is suitable for photo-curing laser Rapid prototyping, based on 3D light curing technologies such as digital light processing and curing to prepare ceramic products, the main claim is the resin formula, but the printed products are not very targeted

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