Method for solving cracking problem during sintering of ceramic concentric spheres

Abstract

The invention discloses a method for solving the cracking problem during sintering of ceramic concentric spheres. The method is characterized in that: in order to keep synchronous contraction of a separating layer of the ceramic concentric spheres and a ceramic layer during the process of high-temperature sintering, powdered organic matters such as sawdust and the like which can be burned off and volatilize at high temperature are introduced into the high-temperature resistant material of the separating layer in proportion such that the introduced part of the powdered organic matters are burned off and volatilize during the high-temperature sintering process of the ceramic concentric spheres so as to lead to volume contraction of the separating layer at high temperature, and the contraction rate of the separating layer is basically consistent with that of the ceramic layer contracted during sintering process so as to avoid cracking of the ceramic concentric spheres because the ceramic layer contracts instead of the separating layer during the high-temperature sintering process.

Description

technical field

[0001] The invention relates to the field of handicraft manufacturing, in particular to a method for solving the sintering cracking of ceramic concentric spheres. Background technique

[0002] Traditional concentric spheres are generally made of ivory and other materials. The production of this kind of concentric sphere must be carved inward layer by layer with the method of hollow carving, and each layer is separated into a shell-shaped spherical surface, so that each layer can move. The more layers, the more difficult it is, and the higher the hardness of the material. , the greater the brittleness, the more difficult it is to process. Materials such as ceramics cannot be processed into concentric spheres by the above method. The ceramic material has good plasticity when it is green. Using the plasticity and ease of processing of the raw material of the ceramic green body, it is easier to realize the processing of concentric spheres by layer-by-layer proce...

Images