Device for producing GH4169 nickel-based superalloy

Abstract

The invention provides a device for producing a GH4169 nickel-based superalloy. An ingot mold is mounted in a centrifugal barrel in an ingot mold chamber; the ingot mold and the centrifugal barrel rotate synchronously; the device further comprises an annular magnetic field generator, a parallel magnetic field generator and a traveling wave magnetic field generator. A coil group A of the annular magnetic field generator is sleeved outside the ingot mould; a first coil assembly B and a second coil assembly B of the parallel magnetic field generator are oppositely arranged on the outer side of the coil assembly A; a first coil assembly C of the traveling wave magnetic field generator is located above the coil assembly A, and a second coil assembly C is located below the coil assembly A. When the device is used for continuously acting on the melt in the solidification process of the melt, relative movement can be generated between liquid metal, then dendritic crystal arms are broken, broken and proliferated, and the purpose of refining crystal grains is achieved; and meanwhile, alloy elements can be more uniformly distributed in liquid metal, and the ingot casting quality is guaranteed.

Description

technical field [0001] The invention relates to the technical field of nickel-based superalloy production devices, in particular to a device for producing GH4169 nickel-based superalloy. Background technique [0002] GH4169 alloy has good strength, excellent creep and fatigue resistance at high temperature, and also has good processing and welding performance, so that it is widely used in the field of aerospace and nuclear industry, giving full play to its high temperature strength performance , to ensure the life and safety of the equipment. [0003] At present, in the process of producing GH4169 alloy by the traditional casting method, when the metal dendrite grows up, due to the rich Nb and Ti elements between the branches and the poor Nb and Ti elements in the branches, it is easy to occur component segregation and Coarse dendrites lead to defects in the alloy, such as white spots, black spots, carbide segregation, etc., which affect the quality of the alloy ingot, and ...

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Problems solved by technology

[0003] At present, in the process of producing GH4169 alloy by the traditional casting method, when the metal dendrite grows up, due to the rich Nb and Ti elements between the branches and the poor Nb and Ti elements in the branches, it is easy to occur component segregation and Coarse dendrites lead to defects in the alloy, such as white spots, black spots, carbide segregation, etc., which affect the quality of the alloy ingot, and then have a negative impact on the subsequent finished products, resulting in uneven structure and performance of the product

[0004] In the casting process, the most important cause of defects is the uneven temperature of the melt during solidification and the uneven distribution of alloying elements in the melt. Therefore, in order to improve this defect, centrifugal stirring, electromagnetic stirring and Ultrasonic vibration and other processing methods, however, due to the heavy weight of the melt, it is easy to generate a vortex in the center of the melt when centrifugal stirring is used, resulting in poor mixing of the melt; when electromagnetic stirring is used in melt stirring, it will The skin effect is generated, which makes the intensity of action low and the uniformity of the magnetic field distribution poor, which leads to incomplete stirring. Therefore, the application of this stirring method is also extremely limited

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