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A method for manufacturing a composite material launch vehicle engine casing

A technology for engine casings and launch vehicles, used in applications, household appliances, household components, etc., can solve problems such as damage to the thermal insulation rubber surface of products, collapse, gypsum cracks, etc., to reduce weight, facilitate molding and demoulding, and operate strong effect

Active Publication Date: 2021-03-16
JIANGSU XINYANG NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the all-metal split mandrel, because the metal splits are in direct contact with the product, a little carelessness in the release mode will damage the inner heat-insulating rubber surface of the product; and the full-gypsum mandrel is too thick because the plaster mandrel is too thick, if the shell size is large The internal moisture is not easy to dissipate, and the gypsum may crack when the product is pressurized and solidified, and serious collapse will occur

Method used

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  • A method for manufacturing a composite material launch vehicle engine casing
  • A method for manufacturing a composite material launch vehicle engine casing
  • A method for manufacturing a composite material launch vehicle engine casing

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0032] like Figure 1-4 Shown is a manufacturing method for composite launch vehicle motor casings, the mandrel device used in it includes a mandrel 2 arranged on a pair of support bases 1, and the mandrel 2 is sleeved to clamp the split assembly 6 The big end clamping assembly 3 and the small end clamping assembly 4 at both ends; the big end clamping assembly 3 includes a large end bushing 31 and a big end locking flange 32 sleeved on the mandrel 2, the big end bushing 31 cooperates with the big-end locking flange 32 to clamp and fix one end of the split component 6 through bolts; the small-end clamping component 4 includes a small-end bushing 41 and a small-end locking flange sleeved on the mandrel 2 42. The small-end bushing 41 cooperates with the small-end locking flange 42 to clamp and fix the other end of the split assembly 6 through bolts. The split assembly 6 is provided with 16 petals, and several split assemblies 6 are assembled around the mandrel 2 Into a spherical...

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Abstract

The invention discloses a manufacturing method for a composite launch vehicle engine shell. The manufacturing method comprises the following steps: (1) mold assembly is conducted, specifically, a coremold device is assembled; (2) a gypsum layer is smeared, specifically, gypsum is evenly smeared on the surface of a section assembly, and extra gypsum is scraped through a scraping plate assembly, and a molded surface is obtained; (3) a product is paved with a layer, specifically, the surface of the gypsum is paved with the layer, and after solidification, the product is obtained; and (4) the product is demolded, specifically, as for the core mold device in the product, a core mold is dismantled according to the sequence of a large-end shaft sleeve, a small-end shaft sleeve, a core shaft, a connecting rod, a large-end locking flange, a small-end locking flange, a large-end section, a middle section and a small-end section. The product is easy to demold, and the inner surface of the product is not damaged.

Description

technical field [0001] The invention relates to a shell of a rocket engine, in particular to a core mold device. Background technique [0002] The launch vehicle motor casing is used to load gunpowder. It has high requirements for the internal shape and size of the product. The internal shape and size affect the filling of the gunpowder and the performance of the rocket. Therefore, the internal shape of the product must be guaranteed. Surface and size have always been a key. [0003] In the past, the launch vehicle engine shells were all made of stamped metal materials. Now that there are composite materials with specific strength, specific modulus, light weight and designability, we need to reconsider the use of composite materials for launch vehicle engine shells. How the material is manufactured. [0004] For the molding of composite launch vehicle engine shells, there are now all-metal split mandrel molding and all-gypsum mandrel molding. For the all-metal split mandr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C70/32B29C70/54B29L31/30
CPCB29C70/32B29C70/54B29L2031/3097
Inventor 郭传航杨恒汤伟张彬
Owner JIANGSU XINYANG NEW MATERIALS CO LTD