Hollow ceramic die and forming method of hollow ceramic component

Abstract

The invention relates to a hollow ceramic die which is provided with a cavity, one end of the cavity is provided with a pouring portion with a pouring port, the other end of the cavity is provided with an air inlet portion with an air inlet, and an air valve is arranged at the air inlet. The invention further relates to a forming method of hollow ceramic through the hollow ceramic die. The hollow ceramic die is simple in structure, residual stress of a blank body can be reduced effectively, and the manufactured hollow ceramic blank body is mellow and full; meanwhile, the precision hollow ceramic products such as spiral hollow ceramic blank bodies which can not be manufactured through conventional methods can be manufactured; the hollow ceramic component manufactured through the forming method of the hollow ceramic component has high precision, the forming method can be applied to the field of precision ceramics, the blank manufacturing period is shortened, the production efficiency is improved, and production raw materials are saved.

Description

technical field [0001] The invention relates to the field of ceramic molds, in particular to a hollow ceramic mold and a method for forming a hollow ceramic component. Background technique [0002] In the prior art, there are generally two manufacturing methods for hollow ceramic components with relatively complex shapes, such as a section of elbow, a section of spiral elbow, a section of Y-shaped elbow, or other ceramic components with irregular channels. One is to use the traditional method of grouting and dehumidification of plaster molds to form channels, which is suitable for ceramic components that do not require high molding precision; the other method is to use some organic materials to make connections according to the shape of channels Core parts, use core pulling to fix the connecting parts in the finished mold, and then inject ceramic slurry to make the green body. Before firing, the connecting core parts are eroded by physical or chemical methods to make the req...

AI Technical Summary

Problems solved by technology

For the first method, the shape of the embryo body can be controlled more precisely, but the accuracy of the inner cavity cannot be controlled. When used to connect other components, the fit cannot be achieved. Although the accuracy requirements can be achieved by internal grinding and polishing, the internal grinding And the polishing method is not suitable for components that need to be connected with screws; for the second method, it can be easily applied to ceramic components with simple shapes, but for ceramic components with complex shapes, this method is limited due to the limited number of cores that can be set. , the connecting core cannot be stably fixed in the finished mold, so the ceramic component made cannot be used due to the large deviation between the inner cavity and the design requirements. The air in the cavity is trapped in the embryo, resulting in defects in the manufactured ceramic components

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