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A Whole Welding Method of Complicated Rectangular Nozzle

A rectangular nozzle and welding method technology, applied in welding equipment, manufacturing tools, auxiliary devices, etc., can solve the problems of unguaranteed brazing surface sealing, difficult tooling clamping, high tooling requirements, and reduce brazing. Difficulty, reduce processing difficulty, increase the effect of brazing area

Active Publication Date: 2021-08-06
XIAN YUANHANG VACUUM BRAZING TECH
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Problems solved by technology

[0003] Due to the special diffusion-convergence structure of the rectangular nozzle throat section, part of the welding surface is a curved surface, and the overall brazing of the rectangular nozzle requires high tooling, which is difficult to clamp and process, and the sealing of the brazing surface is not good. to guarantee

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  • A Whole Welding Method of Complicated Rectangular Nozzle
  • A Whole Welding Method of Complicated Rectangular Nozzle
  • A Whole Welding Method of Complicated Rectangular Nozzle

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Embodiment Construction

[0028] The present invention will be described in further detail below in conjunction with the accompanying drawings, which are explanations rather than limitations of the present invention.

[0029] A method for integrally welding complex rectangular nozzles, comprising the following steps:

[0030] (1) According to the design requirements of the complex rectangular nozzle to be processed, vacuum brazing is carried out after it is manufactured separately according to the four-part assembly; wherein, the four-part assembly includes a symmetrical left assembly 6 and a right assembly 7, and The symmetrical upper assembly 8 and the lower assembly 9; the left assembly 6 and the right assembly 7 both include a first stainless steel substrate 1 and a first copper plate 2 with a cooling channel 5 on one side; the upper assembly 8 and the lower assembly 9 both include A second stainless steel substrate 3 with a curved surface and a second copper plate 4 that can be bonded to it, and a...

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Abstract

The invention discloses a method for integrally welding complex rectangular nozzles, which comprises the following steps: according to the design requirements of the complex rectangular nozzles to be processed, vacuum brazing is carried out after manufacturing the complex rectangular nozzles according to four-part assemblies; the four-part assemblies include Symmetrical left and right components, as well as symmetrical upper and lower components; the first stainless steel substrate is covered with foil-shaped solder, and the side of the first copper plate provided with cooling channels faces the foil-shaped solder, The left and right components are vacuum-brazed after being pressed by tooling; the curved surface of the second stainless steel substrate is used as the joint surface, and foil-shaped solder is spread on it, and then the second copper plate is pasted with the curved surface facing the foil Shaped brazing material, vacuum brazed upper and lower components after pressing with tooling; assemble each component into a rectangular structure, lay paste solder at the connection seam, and vacuum braze the overall assembly of the rectangular nozzle after pressing. The present invention adopts partial processing and brazing and then overall brazing, which reduces the difficulty of processing.

Description

technical field [0001] The invention belongs to the technical field of aerospace equipment and relates to an integral welding method for complex rectangular nozzles. Background technique [0002] The divergence-convergence structure of the nozzle is used in high-speed or hypersonic vehicles and wind tunnel tests in the aerospace field. In the state of hypersonic flight, the throat section of the diffuser-convergent structural part of the rectangular nozzle needs to withstand the harsh working conditions of high pressure and high temperature exceeding 2100 °C; in order to improve the diffusion-convergent structural part of the rectangular nozzle under high temperature and high pressure The service life of the cooling system is generally designed with a complex active cooling structure composed of stainless steel and copper alloy with many thin-walled channels. [0003] Due to the special diffusion-convergence structure of the rectangular nozzle throat section, part of the we...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K1/008B23K3/08
Inventor 任耀文李淑芳任军任轩王凯
Owner XIAN YUANHANG VACUUM BRAZING TECH
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