Molding method of nickel base high-temperature alloy low-allowance blades

A technology of nickel-based superalloy and forming method, which is applied in the field of forging, can solve the problems of large die forging blade allowance, high machining cost, and large material consumption, so as to improve productivity, reduce machining allowance, and save metal materials Effect

Inactive Publication Date: 2017-11-21
SHAANXI HONGYUAN AVIATION FORGING
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  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing die forging blades have a relatively large margin, large material consumption, and high machining costs; in order to solve the above problems, we usually use the forging method of small margin blades, and the tolerance margin of small margin blades (semi-precision forged blades) The

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  • Molding method of nickel base high-temperature alloy low-allowance blades

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Embodiment Construction

[0019] 1. Preliminary basic research

[0020] On the basis of computer simulation, the actual production test results under the cooperation of the shape geometric parameters and thermal processing parameters of billet extrusion, pre-forging and final forging are studied respectively.

[0021] 2. Extrusion, pre-forging size, shape design

[0022] On the basis of determining the basic forging parameters, the size and shape of extrusion and pre-forging can be designed and adjusted by computer simulation technology.

[0023] 3. Small allowance forging of nickel-based superalloy blades

[0024] According to the characteristics of the small margin blade forging of nickel-based superalloy blades in the factory, the final forging die is reasonably designed.

[0025] 4. Formulation of heat treatment process for nickel-based superalloy small margin blades

[0026] For the heat treatment scheme of nickel-based superalloy small margin blades, in view of the comparison with the previous...

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Abstract

Nickel-based superalloys have good hot workability and superior gold comprehensive properties, and can be used in the production of high-strength disc forgings. The present invention proposes a forming method of nickel-based superalloy blades with small margins, vibrating light decoration, special extrusion die and fire for extrusion die forging, etc., which can increase the material utilization rate to more than 60-70% , which saves the cost and should reach the level that the grain size difference between the tenon and the blade body is less than or equal to 2 levels. To a certain extent, the forming method can make up for the mass production of blades with small margins of nickel-based superalloys.

Description

technical field [0001] The invention belongs to the technical field of forging, and relates to a forming method of a nickel-base superalloy small margin blade. Background technique [0002] With the development of domestic forging technology, more and more small blades are processed with small allowances. These products have extremely high requirements on surface quality, shape and size. However, the existing die forging blades have relatively large margins, large material consumption, and high machining costs; in order to solve the above problems, we usually use the forging method of small margin blades, and the tolerance margin of small margin blades (semi-precision forged blades) The amount is about 1 / 3 of ordinary die forgings; mass ratio (ratio of forging mass to finished parts): die forgings are about 3, while small margin blades are 1.2-1.7; surface roughness can reach Ra1.6-3.2; Percentage of surface to be machined: 60% to 80% for die forgings, and <30% for forgi...

Claims

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Application Information

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IPC IPC(8): B21J5/00B21J5/02B21J1/00B21J1/02B21J3/00B21K29/00B21K3/04
CPCB21J5/00B21J1/00B21J1/02B21J3/00B21J5/02B21K3/04B21K29/00
Inventor 段辉秦卫东
Owner SHAANXI HONGYUAN AVIATION FORGING
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