Vacuum arc remelting 3D model for controlling segregation of high-temperature alloy and control method

A technology for vacuum arc remelting and high-temperature alloys, which is applied in the fields of electrical digital data processing, design optimization/simulation, chemical process analysis/design, etc., and can solve problems such as alloy segregation that is difficult to control

Active Publication Date: 2022-01-28
BEIJING CISRI GAONA TECH +5
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] In order to solve the problem that the domestic vacuum arc remelting 3D model is difficult to control the alloy segregation in actual production, this application provides a vacuum arc remelting 3D model and control method to control the segregation of superalloys

Method used

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  • Vacuum arc remelting 3D model for controlling segregation of high-temperature alloy and control method
  • Vacuum arc remelting 3D model for controlling segregation of high-temperature alloy and control method
  • Vacuum arc remelting 3D model for controlling segregation of high-temperature alloy and control method

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Embodiment 1

[0141] In this embodiment, the vacuum arc remelting treatment is performed on the superalloy GH4169 with a diameter of 508 mm.

[0142] At present, when domestic enterprises remelt superalloy GH4169 with a diameter of 508mm in vacuum arc, the melting rate fluctuates within the range of 3.0±0.05 kg / min; the flow rate of cooling circulating water fluctuates within the range of 700-800 L / min. Therefore, in this embodiment, both the cooling circulating water flow rate and the melting rate are taken as intermediate values, that is, the cooling circulating water is set to 750L / min, and the melting rate is set to 3.0kg / min. By knowing the melting rate, the metal melting rate can be reversed. The rising rate of the pool liquid level, and the interface heat transfer coefficient of the overall model can be calculated through the cooling water flow rate and helium pressure, combined with internal empirical formulas or constants, combined with the macroscopic model of solidification heat t...

Embodiment 2

[0145] The difference between this embodiment and the foregoing embodiment 1 is that the melting rate is set at 3.5 kg / min.

Embodiment 3

[0147] The difference between this embodiment and the above-mentioned embodiment 1 is that the melting rate is set to 4.0 kg / min.

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Abstract

The invention relates to the field of vacuum arc remelting, and discloses a vacuum arc remelting 3D model for controlling segregation of a high-temperature alloy and a control method, and the vacuum arc remelting 3D model comprises a solidification heat transfer macroscopic model of the vacuum arc remelting high-temperature alloy, a solidification cast ingot microscopic model and a smelting process parameter model; the control method comprises the following steps: step A, establishing a vacuum arc remelting 3D model; step B, simulating process parameters; step C, simulating a smelting process; and D, smelting high-temperature alloy. Based on the vacuum arc remelting 3D model, the vacuum-tight vacuum arc remelting smelting process can be converted into visual operation, and the macro-microstructure of the solidified cast ingot can be visually represented; relatively proper smelting process parameters of the vacuum arc remelting high-temperature alloy are formulated, so that the alloy segregation is reduced, and the metallurgical quality is improved; theoretical basis and engineering guidance are provided for adjustment and matching of smelting process parameters and control of solidification cast ingot structures and smelting quality.

Description

technical field [0001] The application relates to the field of vacuum arc remelting, more specifically, it relates to a 3D model of vacuum arc remelting and a control method for controlling the segregation of superalloys. Background technique [0002] At present, superalloys play a pivotal role in national defense construction and national economic development, and are indispensable key materials for advanced ground gas turbines, aerospace engines and other high-end manufacturing industries. Superalloys are gradually developing in the direction of large size and high alloying, and need to add more than ten kinds of strengthening elements such as Al, Ti, Nb, Co, Mo, Cr, W, Re, etc. to ensure that the alloy has suitable high temperature strength and excellent resistance to corrosion. High-temperature oxidation or corrosion performance and good structural stability, but the strengthening elements used will also easily lead to segregation of the alloy due to low homogenization, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/23G16C20/10G16C60/00G16C10/00C22B9/20C22C1/02G06F113/08G06F119/08G06F119/14
CPCG06F30/23G16C20/10G16C60/00G16C10/00C22B9/20C22C1/02G06F2119/08G06F2113/08G06F2119/14
Inventor 曲敬龙陈正阳谷雨杜金辉杨树峰毕中南杨玉军田沛玉赵斌安腾孔豪豪王迪段方震史玉亭孟令胜
Owner BEIJING CISRI GAONA TECH
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