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Preparation method of composite material shell for embedded cable

A technology of composite materials and cables, which is applied in the field of composite material combustion chamber shell molding, can solve the problems of engine mass ratio influence, increase shell negative mass, etc., achieve the effect of simplifying laying process, reducing negative mass, and ensuring structural coordination

Active Publication Date: 2020-05-15
湖北三江航天江北机械工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The conventional cable laying technology for domestic engine combustion chamber shells is mostly the pre-embedded metal cable cover. This technology is convenient for cable replacement, maintenance, etc., but the installation of the cable cover will increase the negative mass of the shell, which will affect the engine mass ratio certain influence

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Making winding mandrels

[0047] 1a) Weigh 40kg of water, heat it to 60°C, then add 8kg of polyvinyl alcohol, and mix well to prepare the quartz sand binder;

[0048] 1b) Weighing 300kg of quartz sand, pouring the prepared quartz sand binder into the quartz sand, stirring evenly in a mixer, and preparing quartz mortar, wherein the mesh number of the quartz sand is 100-140 mesh;

[0049] 1c) Fill the quartz mortar into the sand core forming mold of the front head, the sand core forming mold of the barrel section and the sand core forming mold of the rear head respectively, and pressurize and tamp;

[0050] 1d) Put the molded quartz mortar into the furnace, raise the temperature to 120° C. and keep it warm for 15 hours to solidify the quartz mortar. After curing, the sand cake of the front head, the sand cake of the barrel section and the sand cake of the rear head are obtained in sequence through demoulding;

[0051] 1e) Assemble the sand cake of the front head, the san...

Embodiment 2

[0076] Making winding mandrels

[0077] 1a) Weigh 200kg of water, heat it to 60°C, then add 40kg of polyvinyl alcohol, and mix well to prepare the quartz sand binder;

[0078] 1b) Weigh 1500kg of quartz sand, pour the prepared quartz sand binder into the quartz sand, stir evenly in a mixer, and prepare quartz mortar, wherein the number of quartz sand meshes is 100-140 mesh;

[0079] 1c) Fill the quartz mortar into the sand core forming mold of the front head, the sand core forming mold of the barrel section and the sand core forming mold of the rear head respectively, and pressurize and tamp;

[0080] 1d) Put the molded quartz mortar into the furnace, raise the temperature to 120° C. and keep it warm for 18 hours to solidify the quartz mortar. After curing, the sand cake of the front head, the sand cake of the barrel section and the sand cake of the rear head are obtained in sequence through demoulding;

[0081] 1e) Assemble the sand cake of the front head, the sand cake of t...

Embodiment 3

[0106] Making winding mandrels

[0107] 1a) Weigh 32kg of water, heat it to 60°C, then add 8kg of polyvinyl alcohol, and mix well to prepare the quartz sand binder;

[0108] 1b) Weigh 200kg of quartz sand, pour the prepared quartz sand binder into the quartz sand, stir evenly in a mixer, and prepare quartz mortar, wherein the number of quartz sand meshes is 100-140 mesh;

[0109] 1c) Fill the quartz mortar into the sand core forming mold of the front head, the sand core forming mold of the barrel section and the sand core forming mold of the rear head respectively, and pressurize and tamp;

[0110] 1d) Put the molded quartz mortar into the furnace, raise the temperature to 110°C and keep it warm for 10 hours to solidify the quartz mortar, and after curing, remove the mold to obtain the sand cake of the front head, the sand cake of the barrel section and the sand cake of the rear head in sequence;

[0111] 1e) Assemble the sand cake of the front head, the sand cake of the barr...

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Abstract

The invention discloses a preparing method for a cable embedded composite material shell. The preparing method comprises the following steps that firstly, a heat insulation structure is manufactured;secondly, the shell is manufactured through fiber wet process winding; thirdly, cable pavement is conducted; and fourthly, demoulding is conducted. A cable cover is not needed for pavement of a cableon the shell, the passive mass of the shell is reduced, the cable pavement technology is simplified, and the machining efficiency is improved. The cable is embedded between carbon fiber composite material layers of the shell, the cable can well adapt to stress deformation of the shell, the two outermost sides of the cable are filled with light foam materials, and the structure coordination of a winding layer is guaranteed.

Description

technical field [0001] The invention relates to a method for forming a composite material combustion chamber shell, in particular to a method for preparing a composite material shell with embedded cables. Background technique [0002] The cables of the engine combustion chamber housing are used as engine signal control lines, and their material and process performance play an important role in the control system such as engine signal transmission. In order to adapt the engine control system to the new characteristics of the missile as a whole, new requirements are put forward for the cable laying of the engine case. Through the research on the winding casing cable technology, the shortcomings of high negative quality and difficult processing technology brought about by the conventional cable cover embedding scheme are solved, and a new engine casing cable embedding technology is realized. [0003] The conventional cable laying technology for domestic engine combustion chamb...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F23R3/00B29C70/30B29C70/54
CPCB29C70/30B29C70/54F23R3/002F23R2900/00018
Inventor 高李帅谭云水李天明姚桂平邓德凤
Owner 湖北三江航天江北机械工程有限公司
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