Method for shaping throat liner lining

Abstract

The invention discloses a forming method for throat insert lining; wherein, a clamp is arranged on the terminal of the inner core mold with the stable shape and structure, according to the inner structure of throat insert lining; the high melting point metal material sprayed coating layer is sprayed on the outer flank of the inner core mold by the art of air plasma spraying, according to the thickness demand of throat insert lining; the compatibility of the sprayed coating layer material and the inner core mold material is low; the separation of the sprayed coating layer material and the inner core mold material is easy; the outer profile of the sprayed coating layer is finish-machined, the inner core mold is separated from and the acquired sprayed coating layer is the product of throat insert lining, according to the exterior shape and structure of throat insert lining and the thickness demand of each part. The forming method for throat insert lining has the advantages of simple technology, easy manufacture, realizing the near-size forming, low raw material cost, simplifying the subsequent processing procedures, and resolving the problems of high temperature resistant thin wall irregular parts forming of difficult machining and easy broken of shaped product.

Description

Technical field [0001] The invention relates to a method for forming thin-walled special-shaped parts, in particular to a method for forming a high-temperature resistant throat lining. Background technique [0002] Solid rocket motors have higher and higher performance requirements for throat lining materials, which require lower and more stable ablation rates for throat linings. Correspondingly, zero ablation requirements under relatively low temperature conditions and low ablation requirements at higher temperatures are proposed. . In view of the above-mentioned performance requirements for throat lining materials, the use of high melting point metals and high melting point carbide ceramic materials to make solid rocket motor throat linings will be the main research direction in the future. The existing zero-ablation materials are mainly tungsten copper infiltration materials, which are produced by using powder metallurgy methods through tungsten powder compaction, sintering, a...

AI Technical Summary

Problems solved by technology

However, this method has many steps, and the formed tungsten infiltrated copper material has a high density.

If the tungsten infiltrated copper material is processed into thin-walled parts, it will not only waste material, but it is difficult to process and form, and the processed thin-walled parts are easy to break

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