Method for improving strength of ceramic body

Abstract

The invention discloses a method for improving the strength of a ceramic body. The method comprises the steps: taking ceramic body raw materials, crushing, proportionally mixing and ball-milling to prepare slurry; adjusting the water content of the slurry to 60-70%, and then standing for precipitation; taking three fourths precipitate on the upper layer for later use; preparing the residual precipitate at the lower layer into briquettes, firing at the temperature of 900-950 DEG C for 0.5-1 hour, and then crushing into sintered crushed powder again; and taking part of the sintered crushed powder with the separated upper-layer precipitate,mixing, performing wet grinding to obtain green body slurry, adjusting the water content of the prepared slurry to 20-25%, injecting the slurry into a mold, molding, taking out, and drying. The slurry is precipitated to layer coarse and fine particles, and the upper-layer fine material is made into a blank, so as to be beneficial to enhancing the fineness and quality of porcelain. The lower-layer coarse material is made into sintered broken powder to be mixed with the blank slurry, so that the fluidity of the blank slurry can be improved, the watercontent of the slurry is reduced, the shrinkage of the blank in the drying process is reduced, the strength of the blank can be effectively improved, cracking of the blank in demolding, drying and firing processes is avoided, and the damage rate is reduced.

Description

technical field [0001] The invention relates to a method for making ceramics, in particular to a method for improving the strength of a ceramic body. Background technique [0002] Jun porcelain originated in the Eastern Han Dynasty. It is one of the five famous kiln porcelains in the Song Dynasty. Famous for its unique kiln transformation art, it has the reputation of "gold is priceless and Jun porcelain is priceless" and "a family with a lot of money is not as good as a piece of Jun porcelain". However, when making Jun porcelain, although the current technology has made great progress, there are still some defects. In the production process of Jun porcelain, from material selection to firing finished products, there are dozens of production processes. Carelessness will also lead to the wastage of previous efforts, which is why the output of Junci has been extremely low. [0003] In the process of making porcelain, especially for large-sized ceramics, due to the large size...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the defect that the green body is easy to crack and provide a method for improving the strength of the ceramic green body