Forming mold and method of planar ceramic target material

Abstract

The invention discloses a forming mold and method of a planar ceramic target material. The forming mold comprises a steel mold, flexible mold sleeves and a flexible plate. The steel mold comprises anupper steel cover and a lower steel cover. The upper steel cover and the lower steel cover are installed and combined to form an empty cavity. The flexible mold sleeves are mounted at the two ends ofthe steel mold and is in sealing fit with the steel mold. The flexible plate is formed by combining an upper rubber plate and a lower rubber plate and is arranged in the empty cavity of the steel mold. A cavity formed between the upper rubber plate, the lower rubber plate and the flexible mold sleeves serves as a powder filling cavity. The shore hardness of the flexible mold sleeves is 40-90, andthe shore hardness of the flexible plate is 20-60. The forming mold conducts cold isostatic pressing molding on granulation powder, a smooth ceramic target material green body with the regular size can be obtained, and the high-compactness target material can be obtained through sintering. The procedure of oil press molding is omitted in the ceramic material production process, input of equipmentand an oil press mold is reduced, and the risk that the ceramic target material green body cracks during transportation is also reduced.

Description

technical field [0001] The invention relates to the technical field of ceramic target forming, in particular to a forming die and method for a planar ceramic target. Background technique [0002] At present, the molding methods of ceramic rotating target body mainly include extrusion method, in-situ colloidal solidification molding, grouting molding and cold isostatic pressing molding. Extrusion, in-situ colloidal solidification molding and grouting molding can all be formed in near-net dimensions, and have certain advantages in making special-shaped parts. However, the green body obtained by the extrusion method contains a large amount of organic matter and water, which is difficult to sinter and compact; in-situ colloidal solidification molding also contains a large amount of organic matter and water, which is easy to crack when large-sized molding is dried, and it is difficult to obtain ultra-high Density; grouting molding has strict requirements on powder particle size ...

AI Technical Summary

Problems solved by technology

However, the green body obtained by the extrusion method contains a large amount of organic matter and water, which is difficult to sinter and compact; in-situ colloidal solidification molding also contains a large amount of organic matter and water, which is easy to crack when large-sized molding is dried, and it is difficult to obtain ultra-high Density; grouting molding has strict requirements on powder particle size and distribution, slurry and porous mold, and the drying control of green body is strict, which makes the technology difficult

[0003] At present, all the cold isostatic pressing methods are used for one-time molding by a hydraulic press, and then secondary molding by a cold isostatic pressing machine to obtain a green target. However, this molding method has the following disadvantages: 1) process It is cumbersome and needs to be molded first and then cold isostatic pressing; 2) Although the size of the green body after molding is regular, the density uniformity of the green body is poor. Equally, the target material will be bent, deformed or cracked; 3) The strength of the green body after one-time molding is not high, and it is particularly prone to cracking during handling; 4) The hydraulic press equipment used for cold isostatic pressing And molds are expensive, and the production process takes time, labor, electricity, etc.; 5) Currently, the molds used for forming are generally square, and it is difficult to make special-shaped molds. Special-shaped targets can only be cut later, and there will be more scraps waste

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