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A 3D model and control method for vacuum arc remelting to control superalloy segregation

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

Active Publication Date: 2022-04-29
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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  • A 3D model and control method for vacuum arc remelting to control superalloy segregation
  • A 3D model and control method for vacuum arc remelting to control superalloy segregation
  • A 3D model and control method for vacuum arc remelting to control superalloy segregation

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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

This application relates to the field of vacuum arc remelting, and discloses a vacuum arc remelting 3D model and a control method for controlling the segregation of superalloys. An ingot micro model and a smelting process parameter model; the control method includes the following steps: Step A, establishing a 3D model of vacuum arc remelting; Step B, simulating process parameters; Step C, simulating a smelting process; and Step D, melting a superalloy. This application is based on the 3D model of vacuum arc remelting, which can transform the vacuum-tight vacuum arc remelting smelting process into a visual operation, and can intuitively characterize the macro-microstructure of the solidified ingot, and formulate a more suitable vacuum arc remelting superalloy It provides a theoretical basis and engineering guidance for the adjustment and matching of smelting process parameters, the control of solidified ingot structure 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 Patents(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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