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Molding method for influence of thermal material system on internal structure of high-temperature alloy forge piece

A technology of superalloy and forming method, applied in the field of forging hot processing, can solve the problems of unqualified physical and chemical forgings, scrapped forgings, etc., and achieve the effect of improving the qualification rate and improving the internal structure.

Pending Publication Date: 2022-03-11
SHAANXI HONGYUAN AVIATION FORGING
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Especially for multi-fired free forgings after adding billet-making steps, in order to ensure that the final heat treatment meets the test requirements of the final physical and chemical results of the forgings, it is responsible for the physical and chemical failure of the forgings, resulting in the scrapping of the forgings

Method used

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  • Molding method for influence of thermal material system on internal structure of high-temperature alloy forge piece

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Experimental program
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Embodiment

[0041] (1) Design process: the grain size required for forgings is required to be grade 4 → bar for forging → sawing to the length required by the process → determine the forging plan (forging deformation is 20%-25%) → change forging → forming Forging → heat treatment (determine the heat treatment system is 1085 ℃, heat preservation 70min,) → physical and chemical (determination of grain size).

[0042] (2) The production batch number is 2020-08-1245; the forging method is determined to be 20%-25% of the deformation per fire; the following process requirements specification blank: Φ190mm×130mm;

[0043] (3) Put the bar into the furnace at ≤700°C and keep it at 700±50°C for 0.3min / mm~0.4min / mm to raise the temperature to 1120±50°C with the furnace, and the heat preservation coefficient is 0.4min / mm. After the forging is kept warm for the set time , Immediately out of the furnace, upsetting and punching on the free forging hammer until forging to ~Φ230×Φ80±5×80±2, while controll...

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Abstract

The invention belongs to the field of forging hot working, and relates to a forming method for influence of a hot material system on internal structures of high-temperature alloy forgings. The method comprises the following steps: determining a grain size requirement required by a forge piece; according to the grain size requirement, the corresponding deformation amount of each heating number, the thermal material system and the cooling mode are selected; and carrying out heat treatment on the forge piece according to the corresponding deformation of each heating number, the hot material system and the cooling mode.

Description

technical field [0001] The invention belongs to the field of forging thermal processing, and relates to a forming method in which the internal structure of a superalloy forging is influenced by a thermal material system. Background technique [0002] GH4099 is a nickel-based high-temperature alloy material, which is comprehensively strengthened with cobalt, tungsten, aluminum, and titanium elements. , the alloy has a stable structure, and has satisfactory cold and hot forming and welding process performance, and is suitable for high-temperature plate load-bearing welded structural parts such as aero-engine combustors and afterburners. Due to its excellent comprehensive performance, it has been widely used in aviation, aerospace and other fields, and is one of the most widely used high-temperature alloy materials in foreign aero-engines. [0003] Since GH99 alloy forgings have different requirements on the internal structure, the requirements for the thermal material system ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21J1/06B21J17/00B21K29/00B21J5/00B21J5/08B21J5/10C21D9/00
CPCB21J1/06B21J17/00B21K29/00B21J5/002B21J5/08B21J5/10C21D9/0068
Inventor 秦卫东姚彦军朱斌畅继荣
Owner SHAANXI HONGYUAN AVIATION FORGING
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