Homogenization Manufacturing Method of Inconel718 Alloy Disc Forging

A manufacturing method and technology of alloy discs, which are applied in the field of forging, can solve problems such as inability to purchase directly, and achieve the effect of improving plasticity and good organizational properties

Active Publication Date: 2020-09-04
中国第二重型机械集团德阳万航模锻有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, forgings of the above size cannot be directly purchased in the market, so it is necessary to forge a bar of a certain size into a forging of the above size. 3.6. Forged bars of this specification cannot be directly purchased in the market. The grain size of forged bars is ≥6.0. Only ingot bars can be purchased in the market. Ingot bars The grain size of the material is 0-1

Method used

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  • Homogenization Manufacturing Method of Inconel718 Alloy Disc Forging
  • Homogenization Manufacturing Method of Inconel718 Alloy Disc Forging
  • Homogenization Manufacturing Method of Inconel718 Alloy Disc Forging

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] 1. The initial forging temperature of blank 1 is 1000°C, and the final forging temperature is 920°C; the amount of upsetting and elongating deformation is 30% to 50%;

[0054] 2. Heat treatment: First, heat the formed forging to 960°C, keep it in the furnace for 1-2 hours, then air-cool the forging to room temperature after it comes out of the furnace, then heat the forging to 710°C, keep it in the furnace for 7-9 hours, then heat the forging with The cooling rate of 50°C / h is cooled to 610°C with the furnace, and the forgings are air-cooled after being kept in the furnace for 7-9 hours.

[0055] Machining the outer surface of the forging into image 3 The structure shown in the figure, A~M in the figure refers to the detection surface of different positions of the forging, for image 3 Surfaces A to M in the table were subjected to contact ultrasonic testing, and the testing results were as follows:

[0056] Detection surface B~L; clutter level: φ0.5-16dB; reached th...

Embodiment 2

[0061] 1. The initial forging temperature of blank 1 is 1050°C, and the final forging temperature is 930°C; the amount of upsetting and elongating deformation is 30% to 50%;

[0062] 2. Heat treatment: First, heat the formed forging to 970°C, keep it in the furnace for 1 to 2 hours, then air cool the forging to room temperature after it comes out of the furnace, then heat the forging to 720°C, keep it in the furnace for 7 to 9 hours, then heat the forging with The cooling rate of 55°C / h is cooled to 620°C with the furnace, and the forgings are air-cooled after being kept in the furnace for 7-9 hours.

[0063] Machining the outer surface of the forging into image 3 The structure shown in the figure, A~M in the figure refers to the detection surface of different positions of the forging, for image 3 Surfaces A to M in the table were subjected to contact ultrasonic testing, and the testing results were as follows:

[0064] Detection surface B~L; clutter level: φ0.5-16dB; reac...

Embodiment 3

[0069] 1. The initial forging temperature of blank 1 is 1100°C, and the final forging temperature is 920°C; the amount of upsetting and elongating deformation is 30% to 50%;

[0070] 2. Heat treatment: First, heat the formed forging to 980°C, keep it in the furnace for 1 to 2 hours, then air cool the forging to room temperature after it comes out of the furnace, then heat the forging to 730°C, keep it in the furnace for 7 to 9 hours, then heat the forging with The cooling rate of 60°C / h is cooled to 630°C with the furnace, and the forgings are air-cooled after being kept in the furnace for 7-9 hours.

[0071] Machining the outer surface of the forging into image 3 The structure shown in the figure, A~M in the figure refers to the detection surface of different positions of the forging, for image 3 Surfaces A to M in the table were subjected to contact ultrasonic testing, and the testing results were as follows:

[0072] Detection surface B~L; clutter level: φ0.5-16dB; reac...

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Abstract

The invention relates to the technical field of forging and provides a uniform manufacturing method for an Incone1718 alloy plate forge piece. The method comprises the following steps: heating a blankto an initial forging temperature and upsetting the blank, wherein the upsetting deformation is 30-50%; returning the blank to a furnace and heating the blank to the initial forging temperature and drawing out the blank, wherein the drawing deformation is 30-50%; at least upsetting and drawing out the blank repeatedly once; then forging and forming the blank; thermally treating the formed forge piece by way of solid solution plus aging, wherein the initial forging temperature of each heating number is 1000-1100 DEG C and the finish forging temperature of each heating number is greater than orequal to 920 DEG C. By uniform forging through upsetting and drawing for many times, the blank can be forged fully, as-cast structures are broken and porous defects inside are forged; the Laves phasecan be reduced, so that the plasticity of the Incone1718 alloy is improved; by controlling the initial forging temperature, the finish forging temperature and deformation of forging of each heating number, separation out of delta phases in the Incone1718 alloy in grain boundary and in the crystals is promoted, so that the grains are refined.

Description

technical field [0001] The invention relates to the technical field of forging, in particular to a homogenized manufacturing method of an Inconel718 alloy disc forging. Background technique [0002] Gas turbine is a new generation of power plant after steam turbine and internal combustion engine. It is a manifestation of a country's comprehensive strength and is of great significance to protecting national defense and energy security, improving energy structure and achieving sustainable environmental development. At present, the gas-fired units developed in my country are all designed abroad, and most of the key components are imported from abroad, especially the unit rotor and high-temperature stainless steel forgings. Due to the technical blockade of foreign companies, there has been no breakthrough in the localization and independent research of materials and key forgings for a long time. It has become a serious bottleneck in the development of gas-fired units in my countr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22F1/10
CPCC22F1/10
Inventor 刘洋谢静袁士翀廖佳周文武
Owner 中国第二重型机械集团德阳万航模锻有限责任公司
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