Ceramic shell rapid drying method and device as well as ceramic shell

Abstract

The invention discloses a ceramic shell rapid drying method, belonging to the technical field of precision casting. The invention can ensure the quality of a ceramic shell and realize the rapid drying of the ceramic shell simultaneously when the ceramic shell has a complex structure. The method comprises the following steps of: a, placing the ceramic shell to be dried in a sealed cavity; b, vacuumizing the sealed cavity under the premise of controlling the ceramic shell to stay in a constant temperature state, and reducing the temperature of part of air in the sealed cavity within preset time so as to condensing moisture in the sealed cavity; c, carrying out vacuum deflation on the sealed cavity so that the state of the sealed cavity changes back to the ordinary pressure state; and d, judging whether the ceramic shell is dried, if so, terminating the step; and if not, turning to the step b. During the steps, the steps b, c, d need to be preformed repeatedly, in order to dry the ceramic shell. The method avoids excessive drying of some part by vacuum deflation of the seal chamber.

Description

technical field [0001] The invention relates to precision casting technology, in particular to a quick drying method and device for pottery shells, and pottery shells. Background technique [0002] Compared with the traditional casting process, precision casting is a casting method that can obtain relatively accurate shape and high casting precision. The process of precision casting is as follows: firstly, a wax mold is made, which is consistent with the size and shape of the product to be cast, and then a pottery shell is formed on the surface of the made wax pattern, and then the pottery shell is dewaxed processing (melting the wax pattern inside it and removing it), and finally, pouring metal materials into the dewaxed pottery shell, and after the metal material is cooled and solidified, the pottery shell is broken and removed, and the obtained casting is the required casting. product. [0003] In the above process, the production of pottery shells is very important, an...

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Problems solved by technology

This method can also increase the drying speed of the ceramic shell. However, when this method is used, the hygroscopic material adsorbed on the surface of the ceramic shell must be completely removed before the next step of slurry soaking is carried out. Moreover, when the casting structure is complex and has holes, the hygroscopic material is not easy to bury. in, unable to work

[0009] It can be seen from the above that the drying method of the ceramic shell in the prior art cannot not only ensure the quality of the ceramic shell but also realize the rapid drying of the ceramic shell when the structure of the ceramic shell is complex.

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