Partition plate cone body forming method for soft partition plate for double-pulse engine

A molding method and engine technology, applied in machine/engine, rocket engine device, application, etc., can solve problems such as engine explosion and can not fly out as a whole, and achieve the effect of ensuring airtight performance and ensuring overall shedding.

Active Publication Date: 2018-04-24
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

When the product is opened, the soft partition does not allow large fragments to fly out, let alone fly out as a whole, so as not to block the engine nozzle, which will cause the internal pressure of the engine to rise sharply beyond the engine burst pressure value and cause the engine to explode.

Method used

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  • Partition plate cone body forming method for soft partition plate for double-pulse engine
  • Partition plate cone body forming method for soft partition plate for double-pulse engine
  • Partition plate cone body forming method for soft partition plate for double-pulse engine

Examples

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Effect test

Embodiment 1

[0049] A method for forming a partition cone of a soft partition for a double-pulse engine, comprising the following steps:

[0050] 1) When the die is heated to 380-420°C, degrease the surface of the die at high temperature; then the surface of the die is sanded and roughened, and after cleaning, the surface of the die is sprayed with polytetrafluoroethylene. The primary coating is sintered at 420°C; after the primary coating is sintered, spray polytetrafluoroethylene on the surface of the die, and the secondary coating is sintered at 380-420°C, and the secondary coating is sintered for use;

[0051] 2) Put the inner layer of EPDM into the compression mold after step 1) pretreatment for pre-vulcanization, forming the inner layer of EPDM 5, the contour of the inner layer of EPDM 5 is separated from the product The outline of the plate cone is consistent; the pre-vulcanization temperature is 120°C, and the pre-vulcanization time is 35min. The advantages of preforming the botto...

Embodiment 2

[0057] A method for forming a partition cone of a soft partition for a double-pulse engine, comprising the following steps:

[0058] 1) When the die is heated to 380-420°C, degrease the surface of the die at high temperature; then the surface of the die is sanded and roughened, and after cleaning, the surface of the die is sprayed with polytetrafluoroethylene. The primary coating is sintered at 420°C; after the primary coating is sintered, spray polytetrafluoroethylene on the surface of the die, and the secondary coating is sintered at 380-420°C, and the secondary coating is sintered for use;

[0059] 2) Put the inner layer of EPDM into the compression mold after step 1) pretreatment for pre-vulcanization, forming the inner layer of EPDM 5, the contour of the inner layer of EPDM 5 is separated from the product The outline of the plate cone is consistent; the pre-curing temperature is 120 ° C, and the pre-curing time is 30 minutes. The advantages of preforming the bottom layer...

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PUM

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Abstract

The invention discloses a partition plate cone body forming method for a soft partition plate for a double-pulse engine. A parting surface section is embedded into the cone section end portion of a partition plate cone body. According to the forming method, inner EPDM is placed into a pressing die to be subjected to pre-sulfurization, so that inner layer pre-EPDM is formed; the inner layer pre-EPDM is placed into the pressing die, and an inner enhancement material layer, middle layer EPDM, an outer enhancement material layer and outer layer EPDM are sequentially laid on the inner layer pre-EPDM from inside to outside, so that an overall preformed part is formed; and an embedding part of the pressing die is filled with EPDM and then loaded into the pressing die, and room-temperature cold pressing and sulfidation mold releasing are carried out to form the partition plate cone body with the parting surface section. According to the method, the technology can ensure the appearance structure size and the inner quality requirement of the partition plate cone body, strength of all adhesion interfaces meets the design objective requirement, the air tight performance obtained after fiber winds around a shell can be ensured, it is ensured that when double-pulse opening is carried out, connection with the engine shell is firm and overall falling is avoided, and ablation performance duringengine run is ensured.

Description

technical field [0001] The invention belongs to the field of making soft partitions for double-pulse engines, in particular to a partition cone forming method for soft partitions for double-pulse engines. Background technique [0002] The double-pulse motor is a new technology in the field of solid rocket motors. It separates the motor into two relatively independent combustion chambers through a soft partition, and the two combustion chambers work continuously or at intervals, which can effectively realize the control and distribution of engine energy. . The soft partition plays the following roles in the dual-pulse engine casing: [0003] 1. The heat insulation and heat insulation effect of conventional engine heat insulation layer; [0004] 2. When the one-pulse engine is working, the soft partition plays the role of bearing the internal pressure of the engine; [0005] 3. During the working interval of the first and second pulse engines, the soft partition is required...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C43/14B29C43/18B29C43/32B29C35/02B29C33/56F02K9/34
CPCB29C33/56B29C35/02B29C43/146B29C43/18B29C43/32B29C2043/147B29L2031/749F02K9/34
Inventor 谭云水高李帅邓德凤
Owner 湖北三江航天江北机械工程有限公司
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