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Correction method for heat treatment deformation of frame-class aluminum alloy casting

A technology for aluminum alloy castings and heat treatment deformation, applied in the field of heat treatment deformation correction of aluminum alloy castings, can solve problems such as poor practicability, and achieve the effects of avoiding deformation or fracture, avoiding cracking deformation, and avoiding bending deformation

Active Publication Date: 2016-04-20
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the disadvantages of poor practicability of existing heat treatment deformation control methods for aluminum alloy castings, the present invention provides a method for correcting heat treatment deformation of frame-type aluminum alloy castings

Method used

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  • Correction method for heat treatment deformation of frame-class aluminum alloy casting
  • Correction method for heat treatment deformation of frame-class aluminum alloy casting
  • Correction method for heat treatment deformation of frame-class aluminum alloy casting

Examples

Experimental program
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Effect test

Embodiment 1

[0025] In the first step, the front end 1 of the casting, the middle part 2 of the casting, and the rear end 3 of the casting are the key dimension control parts of the casting. The front end adjustable tooling 4 is installed at a distance of 810mm from the end of the front end 1 of the casting, and 620mm from the end of the rear end 3 of the casting. The rear adjustable tooling 6 is installed at the middle part of the casting 2, and the middle adjustable tooling 5 is installed at the middle part of the casting. The distance between the front adjustable tooling 4 and the rear end adjustable tooling 6 is 700mm; Forming plate 8, upper pressing plate 9, fastening bolts 10 and lower bottom plate 11, the positioning bolts 10 are used to constrain and fasten the width direction of the casting, and maintain the same fastening force of the inner and outer bolts of the casting; the upper forming plate in the adjustable tooling The shape of the inner cavity of 8 is consistent with the ou...

Embodiment 2

[0033]In the first step, the front end 1 of the casting, the middle part 2 of the casting, and the rear end 3 of the casting are the key dimension control parts of the casting. The front end adjustable tooling 4 is installed at a distance of 810mm from the end of the front end 1 of the casting, and 620mm from the end of the rear end 3 of the casting. The rear adjustable tooling 6 is installed at the middle part of the casting 2, and the middle adjustable tooling 5 is installed at the middle part of the casting. The distance between the front adjustable tooling 4 and the rear end adjustable tooling 6 is 700mm; Forming plate 8, upper pressing plate 9, fastening bolts 10 and lower bottom plate 11, the positioning bolts 10 are used to constrain and fasten the width direction of the casting, and maintain the same fastening force of the inner and outer bolts of the casting; the upper forming plate in the adjustable tooling The shape of the inner cavity of 8 is consistent with the out...

Embodiment 3

[0040] In the first step, the front end 1 of the casting, the middle part 2 of the casting, and the rear end 3 of the casting are the key dimension control parts of the casting. The front end adjustable tooling 4 is installed at a distance of 810mm from the end of the front end 1 of the casting, and 620mm from the end of the rear end 3 of the casting. The rear adjustable tooling 6 is installed at the middle part of the casting 2, and the middle adjustable tooling 5 is installed at the middle part of the casting. The distance between the front adjustable tooling 4 and the rear end adjustable tooling 6 is 700mm; Forming plate 8, upper pressing plate 9, fastening bolts 10 and lower bottom plate 11, the positioning bolts 10 are used to constrain and fasten the width direction of the casting, and maintain the same fastening force of the inner and outer bolts of the casting; the upper forming plate in the adjustable tooling The shape of the inner cavity of 8 is consistent with the ou...

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Abstract

The invention discloses a correction method for heat treatment deformation of a frame-class aluminum alloy casting. The technical problem that the practicability of an existing heat treatment deformation control method for the aluminum alloy casting is poor is solved. According to the technical scheme, before heat treatment of the aluminum alloy casting, the front end, middle portion and rear end of the casting are fixed through adjustable tools, so that the aluminum alloy casting is prevented from deforming in the solid solution and water entry process. After solid solution treatment, bending stressconcentratesin the middle area of the casting, and loads are applied to enable the middle of the casting to deform in the reverse bending stress direction. Then the aluminum alloy casting is subjected to artificial aging, the deforming area of the aluminum alloy casting restores within the size error control range under the bending stress generated by the gravity of the structure of the aluminum alloy casting, and control over the heat treatment deformation of the aluminum alloy casting is realized. Accordingly, bending deformation of the aluminum alloy casting is effectively avoided, and the aluminum alloy casting meets the mechanical performance and size requirements.

Description

technical field [0001] The invention relates to a method for correcting heat treatment deformation of an aluminum alloy casting, in particular to a method for correcting heat treatment deformation of a frame-type aluminum alloy casting. Background technique [0002] In the field of aerospace, with the deepening of the design concept of integration, integration, light weight and precision, some frame-type aluminum alloy castings with the characteristics of large size, complex shape structure, thin wall and high performance requirements are getting more and more attention. Wide range of applications. However, due to the complex structure and uneven wall thickness of such castings, large-scale shape deformation and partial complex deformation are prone to occur during heat treatment, which brings difficulties to the subsequent casting and use. Therefore, it must be carried out during the heat treatment of castings. Certain fixation and orthopedics prevent casting deformation. ...

Claims

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Application Information

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IPC IPC(8): C22F1/04
CPCC22F1/04
Inventor 李新雷介万奇杨光昱
Owner NORTHWESTERN POLYTECHNICAL UNIV
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