Cold isostatic compaction mould for multi-channel filter elements and method for producing multi-channel filter elements made of intermetallic compounds

Abstract

The invention discloses a cold isostatic compaction mould for multi-channel filter elements and a method for producing multi-channel filter elements made of intermetallic compounds by using the mould. The mould comprises an external rubber sleeve and a plurality of core rods, wherein the two ends of the external rubber sleeve are sealed, and the core rods are axially inserted and fixed in the external rubber sleeve from an end of the external rubber sleeve; each core rod is composed of a supporting tube and an internal expanding sleeve sleeved on the supporting tube; and the wall of the supporting tube sleeved with the internal expanding sleeve is provided with a plurality of through holes, at least one end of each core rod is an opening end communicated with the outside of the mould. Because the external rubber sleeve and the internal expanding sleeve extrude powder simultaneously in the process of cold isostatic compaction, the pressure can be evenly applied on the whole internal and external surfaces of a product, so that the density of the product is evener, and the internal quality of the product is higher; and in the process of demoulding, the external rubber sleeve and the internal expanding sleeve are simultaneously separated from the surface of the product, which is more beneficial for demoulding. The mould disclosed by the invention is applicable for the forming of various materials such as ceramic powder, metal powder or intermetallic compound materials. By using the method disclosed by the invention, multi-channel filter elements made of intermetallic compoundscan manufacture by cold isostatic compaction.

Description

technical field [0001] The invention relates to a cold isostatic pressing forming technology of a multi-channel filter core, in particular to a cold isostatic pressing forming mold of a multi-channel filter core and a method for producing an intermetallic compound multi-channel filter core by using the mold. Background technique [0002] There are currently no multi-channel filter elements made of intermetallic compounds on the market. The reason is that, with the existing filter element manufacturing technology, it is only possible to use the isostatic pressing method to make the intermetallic compound into a multi-channel filter element, and there is currently no mold suitable for isostatic pressing of the multi-channel filter element. Practically speaking, if those skilled in the art want to develop a mold for isostatic pressing of a multi-channel filter element, the mold is designed to include an outer mold and a plurality of core rods installed in the outer mold. Shoul...

AI Technical Summary

Problems solved by technology

However, the above structure alone is not enough to satisfy the requirement

Because the pressure medium will exert extremely high pressure on the mold during isostatic pressing, so each slender mandrel will be squeezed by the surrounding powder and bend, resulting in the mandrel not being able to be demolded

Since this problem cannot be solved at present, it also limits the production of multi-channel filter elements of intermetallic compounds

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