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Vacuum high-pressure diffusion bonding superplastic forming gas path system and control method

A diffusion joining and superplastic forming technology, applied in welding equipment, manufacturing tools, non-electric welding equipment, etc., can solve problems such as product performance degradation, improve production efficiency, avoid product performance degradation, and shorten processing cycles.

Pending Publication Date: 2022-04-12
BEIJING HANGXING MACHINERY MFG CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Compared with the existing processing technology, it can solve the oxidation problem of titanium alloy multilayer structure diffusion bonding / superplastic forming, and avoid product performance degradation

Method used

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  • Vacuum high-pressure diffusion bonding superplastic forming gas path system and control method

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Embodiment

[0030] This embodiment provides a vacuum high-pressure diffusion connection / superplastic forming gas path system and control method. This method uses a titanium alloy four-layer structure as an example to introduce the vacuum high-pressure diffusion connection / superplastic forming method.

[0031] The specific method steps of the present embodiment are as follows:

[0032]Install titanium alloy four-layer structure vacuum high pressure diffusion bonding / superplastic forming mold. Open the vacuum chamber of the equipment, place and fix the four-layer structure vacuum high-pressure diffusion connection / superplastic forming mold on the platform of the vacuum chamber; open the upper mold of the mold, put the four-layer structure blank in the cavity of the lower mold and prepare Position, then close the upper mold.

[0033] Connect the diffusion connection / superplastic forming air line and check for air tightness. Connect the core cavity of the four-layer structure with the gas p...

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Abstract

The invention provides a vacuum high-pressure diffusion bonding / superplastic forming gas path system and a control method, and aims to realize a diffusion bonding / superplastic forming process of a titanium alloy multilayer structure in a vacuum state. Compared with an existing processing technology, the oxidation problem of diffusion bonding / superplastic forming of the titanium alloy multilayer structure can be solved, and product performance reduction is avoided. In addition, the process of removing an oxide layer in part machining is omitted, the machining period can be shortened, cost is reduced, and production efficiency is improved.

Description

technical field [0001] The invention relates to a vacuum high-pressure diffusion connection / superplastic forming air circuit system and a control method. Background technique [0002] The multilayer structure of titanium alloy can not only satisfy its own mechanical properties, but also realize the light weight and integration of the structure, and it has been used more and more in the aerospace field. The multilayer structure of titanium alloy is mainly processed by diffusion bonding / superplastic forming. Typically, the forming process is performed on an air atmosphere thermo / superplastic forming machine. During forming, despite the inert gas protection, the surface of the part is still easily oxidized and a dense oxide layer is formed after forming. It is difficult to remove the titanium alloy oxide layer after it is formed, and it will affect the mechanical properties of the product. In addition, if the process of removing the oxide layer is added later, the processing...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K20/02
Inventor 李保永刘伟秦中环姚为王彬周迎涛丁科迪何慧敏刘吉琛侯超
Owner BEIJING HANGXING MACHINERY MFG CO LTD
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