Design method of corrugated billet for increasing surface deformation of hard-to-deform alloy die forgings

A wave-shaped and die-forging technology is applied in the field of wave-shaped blank design to increase the surface deformation of hard-to-deform alloy die forgings, and can solve the problems of inconsistent performance in the central part and dead zone of surface deformation.

Active Publication Date: 2021-09-14
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] It is a difficult problem in actual production to solve the problem of inconsistency between the dead zone of surface deformation and the performance of the central part of traditional die forgings

Method used

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  • Design method of corrugated billet for increasing surface deformation of hard-to-deform alloy die forgings
  • Design method of corrugated billet for increasing surface deformation of hard-to-deform alloy die forgings
  • Design method of corrugated billet for increasing surface deformation of hard-to-deform alloy die forgings

Examples

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Effect test

example 1

[0028] Example 1: Use step 1 of this method to determine the deformation of GH4169 alloy. Through the die forging physical test in the range of 15-70% deformation, the relationship between the properties of the alloy and the deformation parameters is obtained, and the deformation of the die forging deformation to meet the required performance is determined. The quantity needs to be ≥0.35; step 2 is the wave-shaped blank design. On the basis of the design of the die forging principle, the upper and lower end surfaces of the blank are designed to be wave-shaped, and the wave-shaped height dimensions h1 and h2 are 10% of the total height of the blank. B is set at 90°, and the wavy shape is distributed in a continuous form; in step 3, the deformation amount is calculated, and the finite element simulation is carried out on the die forging process of the designed wavy shape blank. The equivalent deformation of the central part exceeds 1; the blank size is modified and determined in ...

example 2

[0029] Example 2: Using step 1 of this method to determine the deformation of the GH4169 alloy, through the die forging physical test in the range of 15-70% deformation, the relationship between the properties of the alloy and the deformation parameters is obtained, and the deformation of the required performance is determined. The quantity needs to be ≥0.35; step 2 is the wave-shaped blank design. On the basis of the die forging principle design, the upper and lower end surfaces of the blank are designed to be wave-shaped, and the wave-shaped height dimensions h1 and h2 are 15% of the total height of the blank. B is set at 60°, and the wavy shape is distributed in a continuous form; the calculation of deformation in step 3 is to carry out finite element simulation on the die forging process of the designed wavy blank, and the deformation of different parts of the blank can be obtained from the post-simulation processing process, and the surface part and The equivalent deformat...

example 3

[0030]Example 3: Using step 1 of this method to determine the deformation of the GH4169 alloy, through the die forging physical test in the range of 15-70% deformation, the relationship between the properties of the alloy and the deformation parameters is obtained, and the deformation that the die forging deformation reaches the required performance is determined The quantity needs to be ≥0.35; step 2 is the wave-shaped blank design. On the basis of the design of the die forging principle, the upper and lower end surfaces of the blank are designed to be wave-shaped, and the wave-shaped height dimensions h1 and h2 are 15% of the total height of the blank. B is set at 120°, and the wavy shape is distributed in a continuous form; in step 3, the deformation amount is calculated, and the finite element simulation is carried out on the die forging process of the designed wavy shape blank. The equivalent deformation of the central part is more than 1; the blank size is modified and de...

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Abstract

The invention relates to a wave-shaped blank design method for increasing the deformation of the surface layer of a difficult-to-deform alloy die forging. The deformation amount required under the alloy die forging condition is determined based on the performance requirements of the difficult-to-deform alloy die forging. The shape design of the wave-shaped blank, and then the die forging simulation of the wave-shaped blank is carried out, the deformation of different parts is calculated, and the size of the wave-shaped blank is corrected by comparing the calculation results of the deformation, and finally a reasonable wave-shaped blank is determined. This design method can change the deformation of the surface part of the hard-to-deform alloy die forging, and obtain the same performance of the surface part and the center part, which has the value of popularization and application in forging production.

Description

technical field [0001] The invention belongs to the field of forging processing of hard-to-deform alloys, and relates to a design method for a wave-shaped blank that increases the deformation of the surface layer of a hard-to-deform alloy die forging. Background technique [0002] During the die forging forming process of difficult-to-deform alloy forgings, due to the large contact area between the surface of the blank and the die, the surface of the blank will cool down severely and the frictional resistance will be large. In the deformation dead zone, dynamic recrystallization is difficult to occur, the grains are not easy to refine, and the performance is often unqualified. At present, before the die forging of difficult-to-deform alloys is produced, lubricants are generally evenly coated on the surface of the billet to reduce the temperature drop and friction coefficient, so as to improve the fluidity during the alloy die forging process. Although the existing technolog...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21J5/02G06F30/17G06F30/23G06F111/10
CPCB21J5/02G06F30/17G06F30/23G06F2111/10
Inventor 赵张龙曹澜川徐文馨郭鸿镇
Owner NORTHWESTERN POLYTECHNICAL UNIV
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