A kind of ceramic matrix composite material grid reinforcement component forming mold and preparation method thereof

Abstract

The invention relates to a forming mold and a preparation method of a ceramic-based composite material grid reinforcement component. The mold comprises a female mold, a male mold, a skin forming sliding block, a rib plate forming pressing strip and a rib plate forming sliding block. According to the technical scheme of the mold and the preparation method, uniform and sufficient forming pressure can be provided for a prepreg in the forming process; the prepreg can be greatly contracted in the thickness direction of a rib plate in the forming process; it is guaranteed that the component is uniformly pressed at all positions in the forming process, and the forming defects of the component are avoided, damage to fibers at the reinforcement structure caused by shearing of the prepreg through the mold in the forming process is avoided, the integral forming of the component is realized; and meanwhile, the forming position and the thickness of the grid rib plate are guaranteed through formingline by line, the forming quality of the component is effectively improved while the size of the component is ensured.

Description

technical field [0001] The invention relates to a ceramic-based composite material grid-reinforced member forming mold and a preparation method thereof, belonging to the technical field of composite material forming and manufacturing. [0002] technical background [0003] Due to its high temperature oxidation resistance, low density and other characteristics, ceramic matrix composites have important applications in aerospace and other fields, and have become one of the most popular materials concerned by relevant research institutes at home and abroad. All breakthroughs will have a significant impact on the development of aerospace and related application fields. At present, GE Company of the United States has established a relatively mature production line and realized the mass production of ceramic matrix composite components, which has greatly promoted the application of ceramic matrix composite materials in aero-engines. At present, ceramic matrix composites have import...

AI Technical Summary

Problems solved by technology

At present, the molding method of resin-based composite reinforced wallboard structure mostly adopts autoclave molding, but due to the characteristics of fibers and slurry used in ceramic matrix composite materials, autoclave molding has a certain degree of influence on the near-net shape of components. At the same time, the molding pressure of ceramic matrix composites is relatively high, and the requirements for the molding pressure of the autoclave are relatively high, which leads to a substantial increase in the requirements for the comprehensive performance of the equipment.

At present, in the domestic research on the use of prepreg molding components, the application scale of prepreg molding components of ceramic matrix composite materials is relatively small, and there are few reports on the forming method of this reinforced component; the preparation of typical ceramic matrix composite materials abroad The structure is relatively simple, and there are few reinforced components, so there are few reports on the use of silicon carbide fiber prepregs to form prefabricated ceramic matrix composite reinforced components.

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