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Solid rocket engine blanking cap and manufacturing method thereof
The invention belongs to the field of ramjet engines, and discloses a blanking cap. The blanking cap is obtained by pressure casting compounding of a silicon carbide ceramic skeleton and an aluminum alloy, and a front surface of the blanking cap is provided with a hexagonal precast block obtained by cutting. The manufacturing method of the blanking cap comprises the following steps of (1) mixing silicon carbide with melted paraffin or polyvinyl alcohol according to a mass ratio of 3: (1-2.5), injecting into a mold, and pressing and firing to obtain the silicon carbide ceramic skeleton; and (2)compounding the melted aluminum alloy and the silicon carbide ceramic skeleton through die casting, and cutting the front surface to form a hexagonal precast block, and obtaining the blanking cap. The blanking cap is small in redundant mass and high in spraying stability, and an inner wall of the engine is not damaged during spraying.
本发明属于冲压发动机领域，公开了一种堵盖，由碳化硅陶瓷骨架和铝合金经压力铸造复合得到，所述堵盖的正面设置有经切割得到的六边形预制块。所述堵盖的制备方法包括以下步骤：(1)将碳化硅与融化的石蜡或聚乙烯醇以3：(1‑2.5)的质量比进行混合，注入模具中进行压制，烧制，制得碳化硅陶瓷骨架；(2)将融化的铝合金与碳化硅陶瓷骨架通过压铸进行复合，对正面进行切割形成六边形预制块，制得堵盖。所述堵盖的冗余质量小，喷出稳定性高，且喷出时不损伤发动机的内壁。
Solid rocket engine blanking cap and manufacturing method thereof
The invention belongs to the field of ramjet engines, and discloses a blanking cap. The blanking cap is obtained by pressure casting compounding of a silicon carbide ceramic skeleton and an aluminum alloy, and a front surface of the blanking cap is provided with a hexagonal precast block obtained by cutting. The manufacturing method of the blanking cap comprises the following steps of (1) mixing silicon carbide with melted paraffin or polyvinyl alcohol according to a mass ratio of 3: (1-2.5), injecting into a mold, and pressing and firing to obtain the silicon carbide ceramic skeleton; and (2)compounding the melted aluminum alloy and the silicon carbide ceramic skeleton through die casting, and cutting the front surface to form a hexagonal precast block, and obtaining the blanking cap. The blanking cap is small in redundant mass and high in spraying stability, and an inner wall of the engine is not damaged during spraying.
本发明属于冲压发动机领域，公开了一种堵盖，由碳化硅陶瓷骨架和铝合金经压力铸造复合得到，所述堵盖的正面设置有经切割得到的六边形预制块。所述堵盖的制备方法包括以下步骤：(1)将碳化硅与融化的石蜡或聚乙烯醇以3：(1‑2.5)的质量比进行混合，注入模具中进行压制，烧制，制得碳化硅陶瓷骨架；(2)将融化的铝合金与碳化硅陶瓷骨架通过压铸进行复合，对正面进行切割形成六边形预制块，制得堵盖。所述堵盖的冗余质量小，喷出稳定性高，且喷出时不损伤发动机的内壁。
Solid rocket engine blanking cap and manufacturing method thereof
一种固体火箭发动机堵盖及其制备方法
ZHAO NAN (author) / HUANG SHUO (author) / PAN HAIPING (author) / DENG HONGLUN (author) / HE LAN (author)
2020-04-21
Patent
Electronic Resource
Chinese
IPC:
B22D
CASTING OF METALS
,
Gießen von Metallen
/
C04B
Kalk
,
LIME
/
C22C
Legierungen
,
ALLOYS
/
C23C
Beschichten metallischer Werkstoffe
,
COATING METALLIC MATERIAL
/
C25D
Verfahren für die elektrolytische oder elektrophoretische Herstellung von Überzügen
,
PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS
/
F02C
Gasturbinenanlagen
,
GAS-TURBINE PLANTS
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