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A kind of gh4586 superalloy forging method

A technology of GH4586 and high-temperature alloy, which is applied in the field of blade forging, can solve the problems of large deformation resistance, high degree of alloying, and sensitive deformation process parameters, etc., and achieve the effect of satisfactory mechanical properties, uniform grain size, and satisfactory grain size

Active Publication Date: 2021-06-08
AECC AVIATION POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] GH4586 has high degree of alloying, high deformation resistance, and narrow deformation temperature range, so it is very difficult to form by thermal processing
In particular, the microstructure of forgings is sensitive to deformation process parameters, and abnormal structures caused by improper control of process parameters often cannot be completely eliminated by subsequent heat treatment.

Method used

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  • A kind of gh4586 superalloy forging method
  • A kind of gh4586 superalloy forging method
  • A kind of gh4586 superalloy forging method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Step 1: Surface treatment is carried out on the original bar of the superalloy, and a high-temperature-resistant glass coating is applied; the thickness of the high-temperature-resistant glass coating is 0.06 mm; the diameter of the original bar is 60 mm.

[0044] Step 2, final forging

[0045] Heat the original high-temperature alloy bar to 1135°C in an electric furnace for 54 minutes; while heating the original high-temperature alloy bar, preheat the mold base and the mold to 200°C, after the mold is heated, before the bar is placed inside the mold , spray graphite lubricant on the inner surface of the mold for lubrication, and then put the bar into the mold; then use the final forging die to forge on the electric screw press to obtain the final forging; in this embodiment, from the high temperature original bar to The deformation of the final forging is 50%.

[0046] Step 3, solution heat treatment, heating the final forging to 1070°C, keeping it warm for 4h+15min, ...

Embodiment 2

[0052] Step 1, surface-treating the original bar of the superalloy, and coating it with a high-temperature-resistant glass coating; the thickness of the high-temperature-resistant glass coating is 0.06mm; the diameter of the original bar is 50mm;

[0053] Step 2, final forging

[0054] Heat the original high-temperature alloy bar to 1120°C in an electric furnace for 40 minutes; while heating the original high-temperature alloy bar, preheat the mold base and mold to 195°C, after the mold is heated, put the bar into the mold , spray graphite lubricant on the inner surface of the mold for lubrication, and then put the bar into the mold; then use the final forging die to forge on the electric screw press to obtain the final forging; in this embodiment, from the high temperature original bar to The deformation of the final forging is 35%.

[0055] Step 3, solution heat treatment, heating the final forging to 1060°C, keeping it warm for 4h+30min, and then oil cooling to room temper...

Embodiment 3

[0058] Step 1. Surface treatment is carried out on the original bar of the superalloy, and a high-temperature-resistant glass coating is applied; the thickness of the high-temperature-resistant glass coating is 0.05 mm; the diameter of the original bar is 70 mm.

[0059] Step 2, final forging

[0060] Heat the original high-temperature alloy bar to 1090°C in an electric furnace for 70 minutes; while heating the original high-temperature alloy bar, preheat the mold base and the mold to 205°C, after the mold is heated, before the bar is put into the mold , spray graphite lubricant on the inner surface of the mold for lubrication, and then put the bar into the mold; then use the final forging die to forge on the electric screw press to obtain the final forging; in this embodiment, from the high temperature original bar to The deformation of the final forging is 40%.

[0061] Step 3, solution heat treatment, heating the final forging to 1075°C, keeping it warm for 4h+45min, and t...

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Abstract

The invention discloses a GH4586 high-temperature alloy forging method. Aiming at the GH4586 high-temperature alloy forging, the surface of the forging is firstly coated with a high-temperature-resistant glass coating to prevent the surface of the forging from being oxidized or cracked during the forging process; Forging with a press can precisely control the striking energy and the deformation of the forging, so that the forging can achieve precise deformation, high dimensional consistency, and at the same time obtain a more uniform structure, thereby obtaining good mechanical properties; and the screw press is more stable than the forging hammer , the strike energy can be strictly controlled, the streamline of the forging can be evenly distributed along the shape, and the mechanical properties have been greatly improved. In the present invention, whether it is the pre-heating of the forging or the subsequent heat treatment, heating is carried out by an electric furnace, so that the heating temperature can be accurately controlled within the range of ±10°C.

Description

【Technical field】 [0001] The invention belongs to the field of blade forging, and in particular relates to a GH4586 superalloy forging method. 【Background technique】 [0002] With the continuous advancement of aero-engine technology, aero-engine blades, as one of the key parts of the engine, have continuously improved material performance requirements. [0003] GH4586 alloy is a typical hard-to-deform nickel-based superalloy. The alloy exhibits excellent mechanical and physical properties below 650 °C, which meets the comprehensive performance requirements of aero-engine blades, and has been used to manufacture various types of high-temperature rotating parts of rocket engines. [0004] GH4586 has high degree of alloying, high deformation resistance, and narrow deformation temperature range, so it is very difficult to form by thermal processing. In particular, the microstructure of forgings is sensitive to deformation process parameters, and abnormal structures caused by i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21K3/04B21J3/00B21J1/06
CPCB21J1/06B21J3/00B21K3/04
Inventor 王鹏王周涛张卓荦蒋彦骏李娜陈康康马军刘宁
Owner AECC AVIATION POWER CO LTD
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