大型复杂型面包覆套成型工艺探究

Investigation on large complex bread covering and forming process

摘要

包覆套为固体火箭发动机内的重要零件，其外形尺寸、型面结构由发动机燃烧室尺寸及构所决定。大尺寸的包覆套因超出普通成型设备的工作范围，无法以传统的成型工艺进行生产，且传统工艺中，所使用的大型模具成本也较高。本文通过开展方案论证，形成了一种长尺寸、大直径、复杂型面包覆套成型工艺新思路。通过合理划分预成型件结构，巧妙设计新结构成型模具，并根据长期的数据统计，选取合理的收缩系数，最终采用普通设备完成大型复杂型面的包覆套成型生产，节省了大型复杂模具的制造成本，也为大型包覆套产品成型工艺深入研究提供了技术基础。

Abstract

The cladding is an important component in solid rocket engines, and its external dimensions and surface structure are determined by the size and structure of the engine combustion chamber. Large size wrapping sleeves cannot be produced using traditional molding processes due to their exceeding the working range of ordinary molding equipment, and the cost of large molds used in traditional processes is also relatively high. This article presents a new approach to the molding process of large-sized, large-diameter, and complex bread covers through the demonstration of the proposed plan. By reasonably dividing the structure of the preform, cleverly designing a new structure forming mold, and selecting a reasonable shrinkage coefficient based on long-term data statistics, the production of large and complex surface coating sleeves was finally completed using ordinary equipment, saving the manufacturing cost of large and complex molds and providing a technical basis for in-depth research on the forming process of large coating sleeve products.

关键词

包覆套 / 成型工艺 / 探究

Key words

wrapping sleeve / Forming process / explore

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