Diffusion welding process for large-area thin plate structural member

By adding flexible plates to the contact surface of the welding tool and the sheet to be welded, the welding pressure is transferred, and the problem of unwelded areas caused by concave and unevenness during welding of thin plate structural parts is solved, and the welding quality is significantly improved.

CN119747829APending Publication Date: 2025-04-04AVIC BEIJING AERONAUTICAL MFG TECH RES INST
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Patent Information

Application Number
CN202411718920.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-11-28
Publication Date
2025-04-04

AI Technical Summary

Technical Problem

During the diffusion welding process of large-area thin-plate structural parts, random and irregular unwelded areas of the surface of the plate are affected, which affects the welding quality.

Method used

A flexible plate is added to the contact surface of the welding tool and the sheet to be welded, and the welding pressure is transferred through the flexible plate to ensure that the depressions of the sheet to be welded can also come into contact with the pressure, thereby achieving comprehensive welding.

Benefits of technology

By adding flexible plates, the unwelded area is significantly reduced, the welding quality of large-area thin-plate structural parts is improved, and the high-quality manufacturing of components is ensured.

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Abstract

The invention relates to the technical field of diffusion welding, in particular to a diffusion welding process for a large-area thin-plate structural member, which comprises the following steps of: additionally arranging flexible plates on contact surfaces of an upper welding tool and a corresponding to-be-welded plate as well as a lower welding tool and the corresponding to-be-welded plate respectively; and during diffusion welding, welding pressure is transmitted to the to-be-welded plate through the flexible plate. The diffusion welding process for the large-area thin-plate structural member aims to solve the problem that random and irregular defects are generated due to the fact that the surface of a plate of the large-area thin-plate structural member is uneven.
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