Pressure blank injecting, pressure drying gypsum mould and preparation method thereof

Abstract

The invention provides a pottery production used pressurized casting and pressurized drying plaster mould and the preparation method thereof. The mould includes a mould body made of the plaster material and a mould shell made of the metal material; a plurality of hollow riser vents with the diameters of 0.3-3cm are formed in the thickness of the mould body, distributed as reticulation or pectination with the distances of 3-30cm, and connected with each other; and an aeration pipe, a grouting pipe and an exhaust pipe are arranged in the mould body. The preparation method comprises the following steps: reinforcing steel bars, steel tubes and tubes with backstops are distributed as reticulation or pectination according to the shape of the mould body to be cast; the reinforcing steel bars, the steel tubes and the tubes with backstops are adjusted to be better placed in the middle of the thickness of the mould body to be cast; the prepared plaster is grouted into the case mould with the reinforcing steel bars, the steel tubes and the tubes with backstops; the reinforcing steel bars, the steel tubes and the tubes with backstops are taken out quickly when the plaster is partially cured; the hollow mould body is formed after the case mould is removed when the plaster is totally cured; and the mould body is fastened in the mould shell.

Description

technical field [0001] The invention relates to a mold and a preparation method thereof, in particular to a gypsum mold for ceramic production and a preparation method thereof. Background technique [0002] Gypsum molds are widely used in industrialized ceramics production, and a large amount of water will be absorbed in the mold every time a product is injected, and when the mold is repeatedly injected, it must wait for the mold to dry before it can be used again, otherwise, the produced The green body and fired ceramic products are easily deformed. to this end. People usually use the method of heating and baking or blowing with an electric fan to dry. Under normal weather conditions, it takes about 12 hours to heat and dry, and it takes about 24 hours to dry the mold with a fan before it can be used again. And a mold can only inject one green body every day. The disadvantage of the above-mentioned drying and traditional preparation method is that the production efficien...

AI Technical Summary

Problems solved by technology

And one mold can only inject one green body per day

The disadvantage of the above-mentioned drying and traditional methods is that the production efficiency is low

And it needs to consume more energy, and it will increase environmental pollution. At the same time, the mold is easily damaged, which affects the service life of the mold

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