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 forming method of a thin-walled special-shaped part, in particular to a forming method of a high-temperature-resistant throat liner lining. Background technique [0002] The performance requirements of solid rocket motors for throat lining materials are getting higher and higher, and throat linings are required to have a lower and more stable ablation rate. Correspondingly, the requirements for zero ablation at relatively low temperatures and low ablation at higher temperatures are put forward . In view of the above performance requirements for throat lining materials, the use of high melting point metals and high melting point carbide ceramic materials to make solid rocket engine throat linings will be the main direction of research in the future. The existing zero-ablation materials are mainly tungsten-infiltrated copper materials, which are produced by powder metallurgy through tungsten powder pressing, sintering, copper-...

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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