Electron beam welding and superplastic forming process for wing and rudder parts

Abstract

The invention relates to the technical field of superplastic forming, in particular to an electron beam welding and superplastic forming process for wing and rudder parts. The electron beam welding and superplastic forming process for the wing and rudder parts can achieve electron beam welding and superplastic compound integrated formation of hollow intensive core grid wind and rudder parts, corelayers are subjected to electron beam keyhole-mode welding instead of diffusion bonding, and accordingly the quality problem of diffusion bonding of the core layers is solved; the number of gas circuits is decreased, and the risk that the gas circuits are blocked or leak air is reduced; the complicated work of solder mask coating is avoided, the core grid dimension precision is higher, and the part forming quality is improved; and compared with superplastic forming and diffusion bonding, the forming time is shortened, the forming efficiency is improved, and the forming qualified rate is increased.

Description

technical field [0001] The invention relates to the technical field of time-frequency measurement, in particular to an electron beam welding superplastic forming process for wing and rudder parts. Background technique [0002] Aircraft wing and rudder parts are often manufactured using superplastic forming / diffusion connection technology, which can manufacture hollow dense core parts and realize lightweight and integrated wing and rudder parts. The process flow is: rationally design the size of the blank skin and core plate according to the parts, and carry out precise blanking, and pickling treatment after the core plate is milled with ventilation grooves. Apply solder resist according to the internal structure of the part, seal and weld the prepared four-layer sheet (core board / skin), put it into the mold and heat it up. After the temperature reaches the set forming temperature, run the program according to the set process parameters, and load the air pressure through the...

AI Technical Summary

Problems solved by technology

[0003] As the size of the parts increases, the number of forming air paths increases, and the intake and exhaust increase, and the superplastic forming / diffusion connection process also exposes deficiencies: (1) There are many air paths that are prone to blockage, air leakage, and cross-gas. The middle core layer The airway is easy to be poorly ventilated

(2) The quality of the diffusion connection of the core layer is difficult to guarantee, and the core layer is also prone to offset

(3) Superplastic forming / diffusion connection is easy to produce grooves on the surface of parts, which affects the surface quality of parts

(4) The entire forming cycle is relatively long, the time is about 6-8 hours, and the performance of the board is easy to decline

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