A Method for Inhibiting Buckling in Creep-Aging Forming of Aluminum Alloy Components with Complex Curvature

Abstract

The invention discloses a method for suppressing buckling in the creep aging forming of aluminum alloy components with complex curvature, which comprises first pasting and fixing a restraint plate on the peripheral position of the upper surface of the base metal aluminum alloy plate, and then attaching the restraint plate and the base metal aluminum alloy plate together Wrap it in air felt, and lay a vacuum bag to form a closed space. After vacuum treatment, put the above-mentioned treated whole and mold together into an autoclave for creep aging forming to obtain an aluminum alloy component with complex curvature. The invention considers that the stiffness of the member is insufficient during the loading process, and the buckling is suppressed by arranging a restraint plate on the load-bearing side of the member to suppress buckling, and does not need an additional device for applying blank holder force, and can be applied to hot pressing commonly used in creep aging forming In the tank device, the occurrence of buckling is effectively suppressed, and the forming quality is improved; the risk of vacuum film damage is reduced, the forming accuracy is improved, and the probability of component success is increased; at the same time, the blank holder area does not need to be reserved before sheet forming, Conducive to the near-net shape of the component.

Description

technical field [0001] The invention relates to the technical field of precise forming and manufacturing of complex curvature aluminum alloy components, in particular to a method for suppressing buckling in creep aging forming of complex curvature aluminum alloy components. Background technique [0002] Due to the complexity of the force in the forming process of sheet metal, especially thin-walled components, there will be various deformation forms. Tensile deformation and compression deformation are the main two deformation forms. In the process of large deformation, if the tension or pressure is too large, the plate will appear tensile instability or compression instability, which is specifically manifested as tensile instability leading to rupture, and compression instability as wrinkling. The root cause of wrinkling is excessive compressive stress. Unstability wrinkling, also known as buckling, is the main forming defect of thin-walled components. It is a phenomenon th...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a method for suppressing buckling in the creep aging forming of aluminum alloy components with complex curvature, so as to solve the problem that buckling and wrinkling are prone to occur in the creep aging forming process of thin-walled aluminum alloy components with complex curvature proposed in the background art

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