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Forming method of large GH4169 alloy die forging

A GH4169, die forging technology, applied in the field of forging and forming, can solve the problems of destroying the forging flow line, difficult material filling, complex structure, etc., and achieve the effect of improving the forming quality

Inactive Publication Date: 2016-03-16
GUIZHOU ANDA AVIATION FORGING
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] The fan blade disc is one of the common parts on the aircraft. This part is large in size and complex in structure. The GH4169 alloy material used has high deformation resistance and is not easy to form. Thin, rapid temperature drop, relatively difficult material filling
At present, it can only be formed by machining, which wastes a lot of raw materials, and the damaged forging flow line reduces the mechanical properties of forgings

Method used

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  • Forming method of large GH4169 alloy die forging
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  • Forming method of large GH4169 alloy die forging

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specific Embodiment approach

[0020] The main chemical element content (percentage by weight) of the alloy is: C content≤0.08%, Cr content 17.0%~21.0%, Ni content 50.0%~55.0%, Co content≤1.0%, Mo content 2.80%~ 3.30%, Al content 0.30% ~ 0.70%, Ti content 0.75% ~ 1.15%, Nb content 4.75% ~ 5.50%, B content ≤ 0.006%, Mg content ≤ 0.01%, Mn content ≤ 0.35% , Si content ≤0.35%, P content ≤0.015%, S content ≤0.015%, Cu content ≤0.30%, Ca content ≤0.01%, Pb content ≤0.0005%, Se content ≤0.0003%, The balance is Fe.

[0021] The steps of this method are as follows:

[0022] Step 1: Prepare rectangular ring blank

[0023] Take a GH4169 alloy bar of a certain specification, put it into an electric furnace, heat it to 980°C, and keep it warm;

[0024] The bar is taken out, and after upsetting and punching, it is rolled into a rectangular ring billet.

[0025] Step 2: Prepare shaped ring blank

[0026] Return the rectangular ring billet to the furnace and heat it to 980°C; preheat the tire film to 250°C; put the r...

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Abstract

The invention discloses a forming method of a large GH4169 alloy die forging. The method comprises the following steps: heating a GH4169 alloy bar material; upsetting and punching; then rolling to obtain a rectangular ring billet; transferring the rectangular ring billet into a forming die to forge into an irregular ring billet; placing the irregular ring billet into a forming die cavity which is coated with a lubricant; driving an upper die to downwards press at the speed of being not less than 1.5mm / s, so as to form the forging. With the adoption of the method, the large GH4169 alloy die forging can be effectively formed; a shoulder part of a small head of the forging can be completely filled, and thus the forming quality of the large GH4169 alloy die forging can be improved. The method is applied to the formation of the large GH4169 alloy die forging.

Description

technical field [0001] The invention relates to a forging forming method, in particular to a forming method of a GH4169 alloy large die forging. Background technique [0002] The fan blade disc is one of the common parts on the aircraft. The part is large in size and complex in structure. The GH4169 alloy material used has high deformation resistance and is not easy to form. Thin, the temperature drops faster, and the material filling is relatively difficult. At present, it can only be formed by machining, which wastes a lot of raw materials, and destroys the forging flow line, which reduces the mechanical properties of forgings. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a preparation method of barren type to realize the forming method of large die forgings of GH4169 alloy, so as to improve the large die forgings of GH4169 alloy and ensure product quality. [0004] In order to solve the above-mentioned te...

Claims

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Application Information

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IPC IPC(8): B21J5/02B21K1/36
CPCB21J5/022B21K1/36
Inventor 斯庆阳黎汝栋夏春林苏春民李兴品
Owner GUIZHOU ANDA AVIATION FORGING
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