A Forming Technology of Superplastic Deformation/Diffusion Connection for Wavy Hollow Skin Structure Parts

Abstract

The invention provides a forming technology of superplastic deformation / diffusion connection of corrugated hollow skin structure parts, belonging to the technical field of material forming. The specific steps are: according to the final shape of the part, cut two plates of the same size and the same mask as the plates, remove the oil and scale on the surface of the plates, cut the two plates according to the shape of the mask, and align and seal them. , and then put it into the integrated forming mold, after going through the vacuum and temperature environment, the mold is closed, after the temperature and argon environment complete the diffusion connection, carry out the superplastic forming of the hollow rib grid, take out the integrated forming mold, and put The formed parts are taken out from the mold and cut to obtain parts with a wavy hollow skin structure. The invention completes the three steps of overall bending, overall diffusion connection and superplastic forming in one process flow, which can effectively reduce the number and time of working in high-temperature areas, thereby greatly reducing material performance loss.

Description

Technical field [0001] The present invention belongs to the field of material forming technology, a wave-shaped hollow skin structure part of the superplastic deformation / diffusion connection of the forming technology. Background [0002] At present, the main method of manufacturing three-dimensional curved skin structure is to first realize the bending step of the precast blank in the bending die, obtain the final desired skin shape, and then remove it from the bending die, and then put it into the superplastic molding mold to achieve subsequent diffusion and superplastic molding steps. The disadvantage of this method is that the forming process needs to work in the high temperature zone many times, which damages the performance of the material. Based on this, the present invention innovatively proposes bending / diffusion / expansion integrated superplastic deformation / diffusion connection forming technology, reducing the number of times the plate works in the high temperat...

AI Technical Summary

Problems solved by technology

Existing plastic forming methods have obvious limitations in the manufacture of thin-walled hollow components with complex profiles, weight reduction, and thin-walled hollow components of the new generation of high-tech equipment, which has become one of the bottlenecks in the manufacture of new equipment. Therefore, research on key technologies for new forming is imminent

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