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Heat treatment method and device for reducing internal residual stress of gh4096 alloy thin-wall disc ring

An internal residual stress, thin-walled disk technology, applied in heat treatment furnaces, heat treatment equipment, quenching devices, etc., can solve the problems of reducing the cooling rate of the workpiece, reducing the material properties, etc., to reduce the barrier, improve the cooling uniformity, and solve the deformation problem. Effect

Active Publication Date: 2021-12-03
AECC SICHUAN GAS TURBINE RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The GH4096 alloy forgings mainly generate internal residual stress during the cooling process after solution treatment. In order to reduce the internal residual stress, it is necessary to improve the consistency of the cooling rate of each part of the workpiece after solid solution, but only air cooling will reduce the cooling rate of the workpiece and reduce the Material properties

Method used

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  • Heat treatment method and device for reducing internal residual stress of gh4096 alloy thin-wall disc ring
  • Heat treatment method and device for reducing internal residual stress of gh4096 alloy thin-wall disc ring
  • Heat treatment method and device for reducing internal residual stress of gh4096 alloy thin-wall disc ring

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Effect test

Embodiment 1

[0027] figure 1 Schematic diagram of the device structure of the present invention, as figure 1 As shown, this embodiment provides a device for reducing the internal residual stress of the GH4096 alloy thin-walled disk ring, and the device includes a platform base 1, a slewing support 2, a rotary table 3, a reducer 5, a motor 6, and a fan 7 , Fan bracket 8, control panel 9, spraying device 11.

[0028] The slewing support 2 is located above the platform base 1 and is connected to the platform base 1 in rotation; the motor 6 is fixed on the platform base 1, and the output end of the motor 6 is connected to the reducer 5; the reducer 5 is connected to the slewing support 2 to drive the slewing support 2 to rotate ; The upper end of the slewing support 2 is provided with a rotary table 3, and the rotary table 3 is used to support the workpiece 4.

[0029] The fan 7 is installed on the fan bracket 8 and is controlled by the control panel 9; the air inlet of the fan 7 is provided...

Embodiment 2

[0034] This embodiment provides a method for reducing the internal residual stress of the GH4096 alloy thin-walled disk ring, using the above-mentioned device, and the method includes:

[0035] The workpiece 4 is subjected to solution treatment in a heat treatment furnace, the heat treatment temperature is 1050°C-1080°C, and the holding time is 2-6 hours; the workpiece 4 is a GH4096 alloy;

[0036] Take the workpiece 4 out of the heat treatment furnace and fix it on the rotary table 3; the control panel 9 controls the fan 7 to start; The liquid is sprayed at the air inlet to cool the workpiece 4 by gas mist.

[0037] Further, the method includes: the time between taking the workpiece 4 out of the heat treatment furnace and starting the fan 7 does not exceed 90 seconds; the rotation speed of the workpiece during cooling is controlled at 10-20 rpm; when the surface temperature of the workpiece drops to 200 When the temperature is below ℃, the control panel 9 controls the fan 7 ...

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Abstract

The invention provides a heat treatment method and device for reducing internal residual stress of a GH4096 alloy disc ring forging, the device includes a platform base (1), a slewing support (2), a rotary table (3), a reducer (5), a motor (6 ), fan (7), fan support (8), control panel (9), spraying device (11). It can improve the uniformity of the workpiece cooling process, ensure the consistency of the process, and make the performance of the workpiece after heat treatment more stable and the residual stress lower.

Description

technical field [0001] The invention belongs to the technical field of metal heat treatment, and relates to a heat treatment method and device for reducing internal residual stress of a GH4096 alloy thin-walled disk ring. Background technique [0002] Disks and rings are usually used as high-speed rotating parts, such as aero-engine disks and wheels, etc. These parts have very high requirements on the uniformity of performance. In order to control the quenching residual stress of parts, more and more parts blanks require air cooling at present, and higher requirements are put forward for the precise control of cooling uniformity and wind speed. At present, the commonly used air cooling device usually places the workpiece on the platform and the fan in parallel, and the workpiece is cooled by the horizontal wind blown by the fan. This cooling method causes the heat treatment workpiece to cool faster on the side facing the workpiece, while the side facing away from the fan is ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22F1/10C21D9/40C21D9/00C21D1/667C21D1/62C22C19/05
CPCC21D1/62C21D1/667C21D9/0068C21D9/40C22C19/056C22F1/002C22F1/10Y02P10/20
Inventor 白云瑞钟燕田伟郭会明吴晨李佳佳刘砚飞付锐何健
Owner AECC SICHUAN GAS TURBINE RES INST
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