Sintering method of ceramic concentric sphere

Abstract

The invention discloses a cylinder which is prepared from two upper and lower pieces and a green material which is has the same material with a ceramic concentric sphere material and has a spherical hollow cavity. The thickness of the cylinder is thick. A ceramic concentric sphere base substrate is closely wrapped inside the cylinder, and then the cylinder together with the ceramic concentric sphere base substrate is sintered at high temperature such that the ceramic cylinder green compact and the ceramic concentric sphere base substrate can contract together during high-temperature sintering and force exerted on the whole surface of a ceramic concentric sphere is balanced so as to avoid deformation and cracking of the ceramic concentric sphere during the high-temperature sintering.

Description

technical field [0001] The invention relates to the field of handicraft manufacturing, in particular to a sintering method of ceramic concentric spheres. Background technique [0002] The ceramic concentric ball body is composed of multi-layer shell-shaped spherical ceramic layers and multi-layer shell-shaped spherical isolation layers alternately. After high-temperature firing, the powder-like isolation layer is removed, and it becomes a ceramic concentric ball that can move freely. ball. In the whole production process of the ceramic concentric sphere, after the production of the concentric sphere green body is completed, how to keep the fired ceramic concentric sphere from deforming and cracking becomes a technological problem. The more layers, the thinner the layer thickness, and the larger the spherical shape, the easier it is to cause deformation and cracking during sintering. When there are many layers, because the gap between the layers is very small, there is a sl...

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Problems solved by technology

[0003] Purpose of the invention: The technical problem to be solved by the present invention is to provide a method for sintering ceramic concentric balls without using a box and bowl for the problem of easy cracking and deformation of ceramic concentric balls during sintering

[0004] Technical solution: Aiming at the problem that ceramic concentric spheres are easy to deform and crack during high-temperature sintering, in addition to solving the problem of synchronous shrinkage of the isolation layer and the ceramic layer, it is also necessary to make the outer body of the ceramic concentric sphere body be affected when the volume changes during high-temperature sintering. Uniform force

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