A welding method for a pintle injector

A welding method and injector technology, which is applied in welding equipment, metal processing equipment, manufacturing tools, etc., can solve problems such as the inability to meet the welding requirements of pintle injectors, and achieve good high-temperature bearing performance and weld seam tightness The effect of a good, quality connection

Active Publication Date: 2020-08-25
HUBEI SANJIANG AEROSPACE GRP HONGYANG ELECTROMECHANICAL
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AI Technical Summary

Problems solved by technology

[0005] The invention provides a welding method for a pintle injector, which solves or partially solves the technical problem that the common welding method in the prior art cannot meet the welding requirements of the pintle injector, and realizes the welding method for the pintle injector. Welding of injectors containing a large number of high-temperature alloys and stainless steel components, all kinds of weld joints have good air tightness, high-temperature bearing performance, and provide practical and reliable injectors for liquid rocket engines.

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  • A welding method for a pintle injector
  • A welding method for a pintle injector
  • A welding method for a pintle injector

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Embodiment Construction

[0066] The embodiment of the present application provides a welding method for a pintle injector, which solves or partially solves the technical problem that the ordinary fusion welding method in the prior art cannot meet the welding requirements of the pintle injector. The welding work of the ignition mechanism is completed by welding; the welding work of the ignition mechanism and the atomization chamber is completed by vacuum brazing; the welding work of the wire mesh mechanism is completed by resistance spot welding; the welding work of the pipeline mechanism is completed by argon arc welding; Welding of injectors containing a large number of high-temperature alloys and stainless steel components, all kinds of welded joints have good air tightness and high-temperature bearing performance, and provide practical and reliable injector technical effects for liquid rocket engines.

[0067] This application provides a welding method for a pintle injector. The pintle injector incl...

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Abstract

The invention relates to a welding method for a pintle injector, comprising: completing the welding work of the ignition mechanism by laser welding; completing the welding work of the ignition mechanism and the atomization chamber by vacuum brazing; completing the wire mesh mechanism by resistance spot welding The welding work of the pipeline mechanism is completed by argon arc welding. The welding method of the pintle injector uses different welding processes for different parts, so that the complex structure of the pintle injector forms a firm connection, ensuring high-quality connections between high-temperature alloy components and stainless steel components. The weld seam is well sealed and can withstand high pressure.

Description

technical field [0001] The invention relates to the technical field of composite welding, in particular to a welding method for a pintle injector. Background technique [0002] Compared with solid fuel engines, liquid fuel engines have adjustable thrust, high energy conversion rate, and large thrust-to-weight ratio. The use of hydrogen-oxygen propellants is green and safe, and is suitable for the development of space research, commercial aerospace and other projects. The increase of the rocket's thrust-to-weight ratio index means that the requirements for its structural reliability and performance stability have been improved. The thrust chamber, as the core component of the liquid fuel engine, is a device that realizes energy conversion and generates thrust. The requirements for its size, shape and position accuracy, and welded structure performance reliability are further improved. [0003] The thrust chamber of a liquid fuel engine needs to work under harsh conditions su...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K31/02
CPCB23K31/02
Inventor 刘巨锋王涛峰王维新唐众民李宝华
Owner HUBEI SANJIANG AEROSPACE GRP HONGYANG ELECTROMECHANICAL
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