Full-process processing method applicable to heat-treatment-enhanced aluminum alloy

Abstract

The invention belongs to the technical field related to the preparation of aviation and spaceflight large thin-wall components, and discloses a full-process processing method applicable to a heat-treatment-enhanced aluminum alloy. The method comprises the following steps that (1) after a weld joint of an aluminum alloy plate material is cleaned and polished, laser welding and splicing are carriedout on the aluminum alloy plate material in an annealed state by using laser, wherein the wavelength of the laser is 1.07 nm, and the power of the laser is 3.5 kW; (2) solution treatment and dual-stage aging treatment are sequentially carried out on the welded aluminum alloy plate material subjected to welding treatment so as to obtain a semi-finished product of a thin-wall component, wherein thefirst stage of the dual-stage aging treatment is kept at 140 DEG C for 2 hours, and the secondary stage of the dual-stage aging treatment is kept at 180 DEG C for 6 hours; and (3) plastic deformationprocessing is carried out on the semi-finished product by means of electromagnetic forming so as to obtain the thin-wall component. The full-process processing method simplifies the technology, improves the precision, has good flexibility, and is easy to implement.

Description

technical field [0001] The invention belongs to the related technical field of aerospace large-scale thin-walled components, and more specifically relates to a whole-process processing method suitable for heat-treatable and strengthened aluminum alloys. Background technique [0002] At present, in the field of aerospace, with the increasing demand for carrying capacity, the requirements for large-scale and lightweight vehicles are also increasing. So far, for various aluminum alloys including rocket tanks The manufacture of large thin-walled components remains a major challenge. [0003] In view of the existing application technology, the article "Spinforming of Friction Stir WeldedAA2219 Circular Blanks for ARIANE 5 Main Stage Tank Bulkheads" introduces the manufacturing method of the dome structure of the fuel tank used in the Ariane 5 launch vehicle, and its process includes welding , preforming, forming, heat treatment and other steps, through the reasonable regulation ...

AI Technical Summary

Problems solved by technology

The processing method is dedicated to solving the problems of difficulty in forming and difficulty in controlling the quality of parts caused by the mutual influence of heat treatment, welding and plastic forming processes in the production of large thin-walled aerospace components that can be strengthened by heat treatment. And for the manufacture of large thin-walled components, the problems of cost and process difficulty brought by traditional forming methods, and then under the controllable cost and process environment, large-scale thin-walled parts that meet the design requirements can be manufactured

Images