A method for economical creep aging forming of large thin-walled components

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, achieve the effects of preventing deformation, satisfying fastening connections, and saving forming time

Active Publication Date: 2021-02-09
CENT SOUTH UNIV
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  • 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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  • A method for economical creep aging forming of large thin-walled components
  • A method for economical creep aging forming of large thin-walled components
  • A method for economical creep aging forming of large thin-walled components

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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. Such as 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 mille...

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Abstract

A method for economical creep aging forming of large thin-walled components, including: first cutting out two component sheets; fixing the two component sheets into a reinforcement plate, completely covering them with air felt and placing them on the mold surface, The one close to the mold surface is the first component sheet, and the one far away from the mold surface is the second component blank; paste the vacuum bag on the edge of the mold to form a closed space between the vacuum bag and the mold; vacuumize the closed space to make the reinforcing plate and the mold After the profiles approach or keep fit, put them into an autoclave for vacuum creep aging forming. After completion, separate the sheets and molds; mill off the remaining sheet of the first component sheet; and then process the second component sheet Repeat the above-mentioned vacuum creep aging forming process of the reinforced plate to complete the second component. The invention can realize the precise shape-property integrated forming of large thin-walled components, effectively suppresses the local buckling instability of weak rigidity components during creep aging forming, and can save materials and forming time at the same time.

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 Patents(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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