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Forging method for improving structure performance of TC11 alloy wheel disc-journal die forging

A TC11, microstructure and performance technology, applied in the field of material thermal processing, can solve the problem that the deformation amount of the deformation area cannot meet the requirements of low-magnification structure of forgings, and achieve the effect of improving the low-magnification structure level.

Active Publication Date: 2021-05-11
SHAANXI HONGYUAN AVIATION FORGING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a forging method for improving the microstructure and performance of TC11 alloy disc-journal die forgings, so as to solve the technical problem that the deformation amount of the partial deformation area cannot meet the requirements of the low-magnification structure of the forging

Method used

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  • Forging method for improving structure performance of TC11 alloy wheel disc-journal die forging
  • Forging method for improving structure performance of TC11 alloy wheel disc-journal die forging

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Example 1: The structure of the forging should reach grade 1-2.

[0027] The first step: Die forging first fire production:

[0028] The preform is forged after being held at 40°C for 270 minutes at the phase transition point. The heating coefficient is 0.8min / mm. After the holding time is up, the die forging production is carried out. This process needs to control key parameters such as initial forging temperature and final forging temperature, vertical size, etc. . According to previous simulation calculations, this fire can well control the deformation of the center of the forging. H forging to 200mm can control the deformation of the center within 34%, reducing the tendency of the center metal to flow too fast.

[0029] The second step: Die forging Second fire production:

[0030] After the die forging is completed, the forgings are air-cooled. After sand blowing and grinding, the second fire is produced. The preform after the first fire is forged at the phase t...

Embodiment 2

[0033] Embodiment 2: The forging structure should reach: 3-4 grades.

[0034] The first step: Die forging first fire production:

[0035] The preform is forged after being held at 40°C for 270 minutes at the phase transition point. The heating coefficient is 0.8min / mm. After the holding time is up, the die forging production is carried out. This process needs to control key parameters such as initial forging temperature and final forging temperature, vertical size, etc. . According to previous simulation calculations, this fire can well control the deformation of the center of the forging. H forging to 200mm can control the deformation of the center within 34%, reducing the tendency of the center metal to flow too fast.

[0036] The second step: Die forging Second fire production:

[0037] After the die forging is completed, the forgings are air-cooled. After sand blowing and grinding, the second fire is produced. The preform after the first fire is forged at the phase tra...

Embodiment 3

[0040] Embodiment 3: Forging structure should reach: 5-6 grades.

[0041] The first step: Die forging first fire production:

[0042] The preform is forged after being held at 40°C for 270 minutes at the phase transition point. The heating coefficient is 0.8min / mm. After the holding time is up, the die forging production is carried out. This process needs to control key parameters such as initial forging temperature and final forging temperature, vertical size, etc. . According to previous simulation calculations, this fire can well control the deformation of the center of the forging. H forging to 200mm can control the deformation of the center within 34%, reducing the tendency of the center metal to flow too fast.

[0043] The second step: Die forging Second fire production:

[0044] After the die forging is completed, the forgings are air-cooled. After sand blowing and grinding, the second fire is produced. The preform after the first fire is forged at the phase transit...

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Abstract

The invention belongs to the field of material hot working, and relates to a forging method for improving the structure performance of a TC11 alloy wheel disc-journal die forging. The method controls the deformation amount and the deformation rate of an area needing to be improved by controlling the thickness of a die rim, and the following control relations are met: when the structure of the forging is required to be 1-2 levels, the thickness of the rim is controlled to be 120-150 mm; when the structure of the forging is required to be 3-4 levels, the thickness of the rim is controlled to be 100-120 mm; and when the structure of the forging is required to be 5-6 levels, the thickness of the rim is controlled to be 70-100 mm. According to the method disclosed by the invention, the heating temperature and the forging deformation of the forging are accurately controlled, so that an expected requirement is met at one time for a structure die forging which is not easy to obtain, the macrostructure level and the structure reliability of the TC11 alloy wheel disc-journal die forging are effectively improved, and the titanium alloy forging with a good structure requirement is successfully produced.

Description

technical field [0001] The invention belongs to the field of thermal processing of materials, and in particular relates to a forging method for improving the microstructure and properties of a TC11 alloy disc-journal die forging. Background technique [0002] TC11 alloy is a titanium alloy material. TC11 is a nickel-based superalloy strengthened by aluminum, titanium, molybdenum, niobium and other elements. Durable strength and good overall performance. The alloy is widely used in the manufacture of important load-bearing parts such as turbine disks, compressor disks, deflectors, and load-bearing rings of aero-engines, and its working temperature can reach 750-800°C. For forgings with high organizational requirements and forgings that are not easy to repair after forming, different from the traditional forging method, the control of the deformation process of forging is a difficult point in the production of this material, which has an important impact on the internal struc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21J13/02B21J17/02C21D1/26C21D9/00
CPCB21J13/02B21J17/02C21D1/26C21D9/0068
Inventor 姚彦军秦卫东苏灵锐武洋斌
Owner SHAANXI HONGYUAN AVIATION FORGING
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