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Quasi-temperature isostatic pressing forming method and die

A technology of warm isostatic pressing and forming molds, applied in molds, ceramic molding machines, mold auxiliary parts, etc., can solve problems affecting sample molding quality, mold damage, etc., to avoid internal stress, avoid temperature gradients, and good air permeability Effect

Active Publication Date: 2021-07-27
XIAN XINGUI CERAMIC COMPOSITE MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems existing in the prior art, the purpose of the present invention is to provide a quasi-thermal isostatic pressing molding method and mold, which can avoid damage to the mold caused by the presence of gas in the sample raw material or the generation of gas during the molding process , Problems that affect the quality of sample molding

Method used

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  • Quasi-temperature isostatic pressing forming method and die
  • Quasi-temperature isostatic pressing forming method and die
  • Quasi-temperature isostatic pressing forming method and die

Examples

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Embodiment

[0082] The quasi-thermal isostatic pressing molding of 3D self-sealing layered CNT paper / resin-based composite material (see patent 201910114419.2 for the preparation technology of the composite material preform sample) is taken as an example to illustrate the assembly and use of the mold.

[0083] (1) Assembly mold

[0084] to combine Figure 1a-1e as well as Figure 2a-2f , first assemble the mold. The lower layer of the inner mold 2 is packed into the cavity of the female mold from the lower surface of the female mold 1-1 of the outer mold 1. In addition to the central silica gel in the lower layer of silica gel, a first compensation layer 3-1 with the same area as the upper surface of the remaining 4 silica gels (such as Figure 2c and 2d ). Then put the middle layer of the inner mold 2 into it, the middle layer is divided into 9 pieces, the central piece of silica gel is taken out, and 4 pieces of the remaining 8 pieces of silica gel are in contact with the first cav...

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Abstract

The invention discloses a quasi-temperature isostatic pressing forming method and a die. An outer die comprises a female die and male dies arranged at the two ends of the female die, the female die is of a transparent cylinder structure, exhaust holes are evenly and symmetrically formed in the wall face of the female die, and a cavity defined by the female die and the male dies is filled with an inner die; a first cavity used for containing a sample is formed in the inner die, the first cavity is in a cuboid shape, the inner die comprises a plurality of inner die blocks, the inner die blocks comprise contact inner die blocks and supporting inner die blocks, and the orthographic projection range from each face of the first cavity to the inner wall face of the outer die is provided with the contact inner die blocks used for making contact with the surface of the sample; and the sizes of the contact inner die blocks corresponding to the two opposite faces in the first cavity are the same, and the area, outside the contact inner die blocks, of an inner cavity of the outer die is filled with the supporting inner die blocks. According to the quasi-temperature isostatic pressing forming method and the die, through reasonable arrangement of the component structure, uniform and compact forming of a green body is achieved, the quasi-temperature isostatic pressing forming method and the die are suitable for the conditions with and without gas product discharging in the forming process, and the application range is wide.

Description

technical field [0001] The invention belongs to the field of new material moulds, and in particular relates to a quasi-thermal isostatic pressing forming method and a mould. Background technique [0002] Isostatic pressing technology is an advanced technology that uses the products in the closed high-pressure container to form under the state of uniform high-pressure pressure in all directions. Compared with one-way or two-way pressure forming, isostatic pressing has many advantages. The products formed by isostatic pressing have a high density, which is generally 5% to 15% higher than that of one-way and two-way compression molding; moreover, the density of compacts formed by isostatic pressing is uniform. Or two-way pressing, there will be uneven density distribution of the green compact. [0003] The traditional working principle of isostatic pressure is Pascal's principle. In a sealed container, the static pressure generated by the external force acting on the static l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B28B3/00B28B7/00
CPCB28B3/003B28B7/0097B28B7/0008
Inventor 蔡艳芝任璇璇李璇李阳黄少华刘婷婷
Owner XIAN XINGUI CERAMIC COMPOSITE MATERIAL CO LTD
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