Technological method for removing residual stress of arc-shaped forging

A technology of residual stress and process method, which is applied in the field of aviation machinery, can solve the problems of ineffective release of stress, difficulty in control, sensitivity to compression deformation, etc., and achieves the effect of low cost, low difficulty in operation, and elimination of residual stress

Active Publication Date: 2019-03-08
SOUTHWEST ALUMINUM GRP
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Problems solved by technology

[0003] At present, foreign countries generally adopt the method of profiling to eliminate residual stress, but large-scale stretching equipment is required, and the investment is large. In the absence of large-scale stretching equipment, when using a set of molds for cold compression of this type of forging, especially When compressing the rounded corners

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  • Technological method for removing residual stress of arc-shaped forging
  • Technological method for removing residual stress of arc-shaped forging
  • Technological method for removing residual stress of arc-shaped forging

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Embodiment Construction

[0023] In view of this, the core of the present invention is to provide a method for eliminating residual stress of arc-shaped forgings, which can not only effectively eliminate residual stress, but also has low operation difficulty and low cost.

[0024] In order to enable those skilled in the art to better understand the solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0025] The process method for eliminating the residual stress of an arc-shaped forging disclosed in the embodiment of the present invention includes: 1) performing a primary cold compression on the die forging 1; 2) performing a secondary cold compression on the die forging 1 . Through the above process method, not only the residual stress of the arc forging can be effectively eliminated, but also the operation is less difficult and the cost is low.

[0026] It should be noted that, in st...

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Abstract

The invention discloses a technological method for removing residual stress of an arc-shaped forging. The technological method comprises the step (1) of performing primary cold compression for a die forging; and the step (2) of performing secondary cold compression for the die forging. Through the above technological method, not only can the residual stress of the arc-shaped forging be removed, but also the operation difficulty is low; and the cost is low.

Description

technical field [0001] The invention relates to the technical field of aviation machinery, in particular to a process method for eliminating residual stress of arc-shaped forgings. Background technique [0002] Large T-section arc-shaped forgings are used as aircraft load-bearing structural parts, which are prone to deformation after quenching and have large residual stress, which will cause serious mechanical deformation during machining, so cold deformation is required to achieve the purpose of rectification and elimination of residual stress . [0003] At present, foreign countries generally use the method of profiling to eliminate residual stress, but large-scale stretching equipment is required, and the investment is large. In the absence of large-scale stretching equipment, when using a set of molds for cold compression of this type of forging, especially When compressing the rounded corners, the rounded corners are extremely sensitive to compression deformation, requ...

Claims

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Application Information

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IPC IPC(8): C22F1/04
CPCC22F1/04
Inventor 刘强吴道祥陈焕良李丹丹曾庆华
Owner SOUTHWEST ALUMINUM GRP
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