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Machining method of GH4169 disc and shaft integrated forged piece

A technology of GH4169 and processing method, applied in the field of alloy forging, can solve the problems such as forgings with complex shapes that cannot be used for forging

Inactive Publication Date: 2021-05-18
贵阳安大宇航材料工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, forging only by drawing and elongating can not be applied to forging some forgings with complex shapes.

Method used

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  • Machining method of GH4169 disc and shaft integrated forged piece
  • Machining method of GH4169 disc and shaft integrated forged piece
  • Machining method of GH4169 disc and shaft integrated forged piece

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A processing method for a GH4169 disc-shaft integrated forging, the specific method is as follows:

[0024] 1. Blanking: The raw material of GH4169 alloy bar is blanked according to the corresponding specifications to obtain the blank before forging.

[0025] 2. Machining flat end face: For the blanked GH4169 alloy bar, the two end faces of the blanked GH4169 alloy bar are exposed to the minimum amount, and the tolerance of flatness and verticality after the end face is ±0.5mm.

[0026] 3. One-time heating: Round both ends of the billet to R20mm, and wrap asbestos with a thickness of 60mm on any end of the billet. The length of the billet wrapped is 380mm. Heat it to 850°C for heat preservation, and then heat to 1040°C for heat preservation.

[0027] Further, for the heat preservation, the heat preservation time is calculated by the effective thickness of the blank × 0.6 min.

[0028] 4. Combined forging:

[0029] a. Tire mold forging: After preheating the tire mold, ...

Embodiment 2

[0034] A processing method for a GH4169 disc-shaft integrated forging, the specific method is as follows:

[0035] 1. Blanking: The raw material of GH4169 alloy bar is blanked according to the corresponding specifications to obtain the blank before forging.

[0036] 2. Machining flat end face: For the blanked GH4169 alloy bar, the two end faces of the blanked GH4169 alloy bar are exposed to the minimum amount, and the tolerance of flatness and verticality after the end face is ±0.5mm.

[0037] 3. One-time heating: Round both ends of the billet to R25mm, and wrap asbestos with a thickness of 70mm at any end of the billet. The length of the billet wrapped is 385mm. Heat it to 850°C for heat preservation, and then heat to 1040°C for heat preservation.

[0038] Further, for the heat preservation, the heat preservation time is calculated by the effective thickness of the blank × 0.6 min.

[0039] 4. Combined forging:

[0040] a. Tire mold forging: After preheating the tire mold, ...

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Abstract

The invention belongs to the field of alloy forging, and particularly relates to a machining method of a GH4169 disc and shaft integrated forged piece. By adopting a forging mode of combining loose tooling forging with free forging, the eccentricity condition of a disc and a shaft is obviously weakened, the deformation of the forged piece is basically uniform, the brinell hardness of the forged piece can reach 438 at the room temperature after solid solution and aging heat treatment, the percentage elongation after fracture reaches 19.0%, the percentage reduction of area reaches 34%, material utilization rate of the forged piece is increased, and the risk of size scrap is basically eliminated.

Description

technical field [0001] The invention belongs to the field of alloy forging, and in particular relates to a processing method for a GH4169 disc-shaft integrated forging. Background technique [0002] Nickel-based alloys refer to a class of alloys that have comprehensive properties such as high strength and certain oxidation and corrosion resistance at high temperatures of 650-1000 °C. According to the main performance, it is subdivided into nickel-based heat-resistant alloys, nickel-based corrosion-resistant alloys, nickel-based wear-resistant alloys, nickel-based precision alloys and nickel-based shape memory alloys. [0003] GH4169 is a precipitation-strengthened nickel-based superalloy, which has good comprehensive properties in the temperature range of -253 to 650 °C, and its yield strength below 650 °C ranks first among deformed superalloys, and has good fatigue resistance, radiation resistance, and anti-corrosion properties. Oxidation, corrosion resistance, and good pr...

Claims

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Application Information

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IPC IPC(8): B21J5/00B21J1/06
CPCB21J5/002B21J1/06
Inventor 任永海李泽东郑禄鹏李志瑶何冰梁宇程治
Owner 贵阳安大宇航材料工程有限公司
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