A method for ceramic hot-pressing casting wax removal

By using silica as an adsorbent, the problems of powder adhesion and insufficient high-temperature resistance in ceramic hot pressing are solved, thereby improving the strength of green bodies and the stability of product quality at high temperatures. This method is suitable for ceramic hot pressing of materials such as alumina, beryllium oxide, zirconium oxide, and silicon carbide.

CN117140687BActive Publication Date: 2026-07-07宜宾红星电子有限公司

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
宜宾红星电子有限公司
Filing Date
2023-09-19
Publication Date
2026-07-07
Patent Text Reader

Abstract

The application discloses a kind of ceramic hot-pressing casting forming wax removal methods, comprising the following steps: S1, select white carbon black as adsorbent in the process of ceramic hot-pressing casting forming wax removal;S2, white carbon black is spread in the bottom of ceramic hot-pressing casting forming kiln furniture container to form white carbon black bottom layer with certain thickness;S3, the green body to be waxed is placed on white carbon black bottom layer, leave gap between green body and white carbon black bottom layer, then cover a layer of white carbon black on green body, so repeat until the kiln furniture container is filled;S4, carry out wax removal work, so that green body has certain strength;S5, after wax removal work is completed, carry out soot blowing treatment;S6, white carbon black after wax removal is recycled and sieved to be recycled.The application utilizes the porous structure of white carbon black to provide strong adsorption to completely remove paraffin wax, so that the problem of hole blockage and powder sticking does not occur, so that the green body has good strength, and damage during subsequent transfer and placement is avoided.
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