Ceramic product gelcasting mold

Abstract

The invention relates to a ceramic product gelcasting mold. The mold comprises an upper mold, a lower mold and a pouring mechanism, the lower mold is arranged at the lower end of the upper mold, the pouring mechanism is arranged at the upper end of the upper mold, the upper mold comprises a cover plate, a mounting column, an upper pressing mold, a rotating motor and a connecting block, the lower mold comprises a supporting frame, a rotating frame and a lower pressing mold, the pouring mechanism comprises a pouring pipe, a main pipe body, a material placing cylinder and an uniform stirring frame, the material placing cylinder is divided into a left cylinder body and a right cylinder body, and the uniform stirring frame comprises a sleeving ring, a uniform stirring plate and a uniform stirring roller. The gelcasting work is completed in a mode that the pouring of slurry materials and putting of an initiator and a catalyst are carried out synchronously, the solidification time of the slurry materials can be effectively prolonged, the slurry materials are guaranteed to be uniformly distributed in a mold cavity, and in the pouring process, the lower mold can rotate, so that the slurry materials are driven to shake slightly, and the mold plays a role in eliminating air bubbles mixed in the slurry materials.

Description

technical field [0001] The invention relates to the technical field of ceramic product molding, in particular to a ceramic product gel injection mold. Background technique [0002] Gel injection molding is to add organic monomers, crosslinking agents, initiators, and catalysts into the ceramic slurry, inject the slurry into a non-porous membrane, and use temperature to induce the polymerization of the organic monomers to solidify to form a green body. molding process. The gel injection molding process has many advantages compared with other traditional molding processes, which has attracted widespread attention in the ceramic industry, making the technology continuously improved and applied in actual production. [0003] Although gel injection molding has its unique advantages, the following problems still exist in the gel injection molding process at present: [0004] (1) Since catalysts and initiators are mostly added to the slurry before pouring, the speed of gel format...

AI Technical Summary

Problems solved by technology

[0004] (1) Since catalysts and initiators are mostly added to the slurry before pouring, the speed of gel formation is accelerated. If the pouring speed is too slow, the slurry will solidify before reaching the designated position, and if the speed is too fast, it will cause The slurry filling is not complete, and there is a problem of material shortage in the mold cavity, which greatly affects the quality of the finished body;

[0005] (2) In order to prevent the oxygen mixed in the slurry from causing oxygen resistance during the molding process, vacuum pumping or ultrasonic vibration is used to remove oxygen several times before pouring. Both methods can effectively reduce the Oxygen content, but the slurry will still be mixed with a small amount of oxygen during the subsequent pouring process. Since the slurry has entered the mold, it is difficult to continue to eliminate oxygen

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