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Economical creep aging forming method of large thin-wall component

A technology of creep aging forming and thin-walled components, which is applied in the field of thin-walled component manufacturing, can solve problems such as buckling instability of large thin-walled components, and achieve the effects of preventing deformation, reducing weight, and saving materials

Active Publication Date: 2020-05-26
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a large thin-walled component economical creep aging forming method to solve the problem of local buckling instability in the bending creep aging forming process of large thin-walled components proposed in the background technology

Method used

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Embodiment 1

[0027] The invention provides a large-scale thin-walled component economical creep aging forming method, which is described by taking a large-scale thin-walled double-curvature component as an example.

[0028] S1. First, cut out the factory-made aluminum alloy sheet stock with a thickness of 5 mm and a brand name of 2219, and cut out two component sheet materials 1 including the component expansion body 11, preferably two pieces with an upper bottom of 743 mm and a lower bottom of 743 mm. Isosceles trapezoidal plate with a height of 1419mm and a height of 1394mm. like figure 1 shown. Mark the area of ​​the component expansion body 11 in the two component sheets 1, and reserve a circle of 50 mm wide outer grid area 112 inward along the edge of the area of ​​the component expansion body 11. For the external grid area 112 of the component expansion The area is milled to form a thinned area 111 of 2 mm thickness by 3 mm. The side of the component plate 1 that has been milled i...

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Abstract

The invention discloses an economical creep aging forming method of a large thin-wall component. The economical creep aging forming method comprises the steps that two component plates are firstly cutout; the two component plates are fixed to form a reinforcing plate, and the reinforcing plate is completely covered by ventilated felt and then placed on a mold surface, specifically, the first component plate is close to the mold surface, and the second component plate is away from the mold surface; a vacuum bag is pasted on the edge of a mold to make the vacuum bag and the mold form a closed space; the closed space is vacuumized to make the reinforcing plate approach or keep fit with the mold surface, then the reinforcing plate and the mold are put into a hot-pressing tank to be subjectedto vacuum creep aging forming, and each component plate is separated from the mold after the vacuum creep aging forming is finished; the allowance plate of the first component plate is milled off; andthe process of the vacuum creep aging forming of the reinforcing plate is repeatedly performed on the second component plate to finish a second component. According to the economical creep aging forming method, the precise shape-property integrated forming of the large thin-wall component can be realized, the local buckling instability condition of a component with weak rigidity in the creep aging forming process is effectively inhibited, and meanwhile, the material and the forming time can be saved.

Description

technical field [0001] The invention relates to the technical field of thin-walled component manufacturing, in particular to a large thin-walled component-saving creep aging forming method. Background technique [0002] Thin-walled components with large complex curved surfaces are widely used in the aerospace industry, and their quality and performance directly affect the reliability of related products. In order to obtain the excellent formability of the hyperbolic thin-walled member at the same time, the creep aging forming technology of formability co-manufacturing has been developed at home and abroad. Creep age forming technology is mainly based on material creep and aging properties, which is safe, repeatable and capable of meeting formability requirements when producing wall panel parts. First of all, the workpiece is elastically deformed by a certain loading method at room temperature, and this deformation is maintained; then it is put into the heating equipment tog...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D31/00
CPCB21D31/005
Inventor 湛利华彭南辉喻吉望
Owner CENT SOUTH UNIV
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