3D printing preparation method for gel injection mold of ceramic gradient materials

Abstract

The invention discloses a preparation method for gel injection molding 3D printing of ceramic gradient materials. The specific method includes the following steps: the establishment of a three-dimensional model is firstly modeled by computer modeling software, and then the built three-dimensional model is "partitioned" into thicknesses It is a section of 50-120 μm, that is, a slice, so as to guide the printer to print layer by layer; the raw material ratio of the ceramic gradient material is calculated according to the composition design requirements of the ceramic gradient material, and the component distribution ratio of different positions of the ceramic gradient structure is calculated as a variable Input the computer to control the powder feeding ratio at different positions during printing; set the printing parameters, set the printing speed to 0.2~0.5m / s, print resolution 60~100μm, and the powder feeding amount to 0.1~5mm 3 / s. The present invention adopts 3D printing technology as an additive preparation method, which saves raw materials and avoids waste compared with traditional techniques.

Description

technical field [0001] The invention relates to the technical field of ceramic gradient material molding, in particular to a method for preparing a ceramic gradient material by gel injection molding 3D printing. Background technique [0002] Ceramic functionally graded materials combine the characteristics of high temperature resistance and corrosion resistance of ceramic materials with the characteristics of continuous change of components and controllable performance of functionally graded materials, and have important application value in the fields of national defense, military, biomedicine, and mechanical processing. Especially with the rise of hypersonic aircraft, there is an urgent need for high-temperature resistant and high-strength multi-functional ceramic materials, and different parts of certain parts are required to have different properties. However, it is difficult for general homogeneous materials to meet this requirement. Therefore, functionally graded mater...

AI Technical Summary

Problems solved by technology

Compared with the traditional wet forming process, it has the advantages of easy forming of large-sized parts with complex shapes, uniform green body components, high strength, and fewer defects. The uniformity of the ceramic slurry will affect the quality of the finished material when the uniformity is poor, so the uniformity of the preparation of the ceramic slurry needs to be improved. At the same time, the molding speed of the rubber material is slow and the production efficiency is low.