Method for continuously refining high-temperature alloy return scraps through electron beams
An electron beam refining and superalloy technology, applied in the direction of improving process efficiency, can solve the problems of low utilization rate, the purity of returned alloy ingots cannot reach new materials, and resource waste.
Inactive Publication Date: 2021-05-07
DALIAN UNIV OF TECH
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Problems solved by technology
In terms of the control of impurities and inclusions, the purity of the returned alloy ingots in my country has not yet reached the level of new materials, resulting in a low utilization rate of the current superalloy returned materials, resulting in a serious waste of resources
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[0051] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.
[0052] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is only some embodiments of the present invention, but not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and in no way taken as limiting the invention, its application or uses. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordina...
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The invention provides a method for continuously refining high-temperature alloy return scraps through electron beams. The method comprises the following steps of S1, pretreating high-temperature alloy raw materials; and S2, continuously purifying the high-temperature alloy return scraps through electron-beam refining, and obtaining a high-purity FGH4096 high-temperature alloy cast ingot. According to the method for continuously refining the high-temperature alloy return scraps through the electron beams disclosed by the invention, the high-temperature alloy return scraps are purified by adopting an electron-beam refining means, a melt is fully subjected to degassing reaction by utilizing a high-temperature and high-vacuum environment, small-size inclusions in the melt are dissolved by utilizing local large overheating in the electron-beam refining process, decomposition of large-size inclusions on the surface of the melt is achieved through the bombardment effect of the high-energy electron beams, and a high-purity high-temperature alloy return scrap ingot blank is obtained through casting; and on the basis, continuous refining and purification of the high-temperature alloy return scraps are realized through repeated feeding, refining and casting processes.
Description
technical field [0001] The invention relates to a method for continuously refining high-temperature alloy return materials with electron beams. Background technique [0002] Superalloy materials are widely used in aerospace, petrochemical, industrial gas turbines and other fields. The annual demand for superalloys in my country is huge, and the annual demand for cast superalloys alone is as high as 5,000 tons. During the preparation of high-temperature alloys, a large amount of return materials in the form of risers, runners, and scrap parts will be produced. For example, the yield rate of deformed alloys prepared by the traditional double-link process is not higher than 60%, while the casting single The weight of the final part of crystal alloy is only about 30% of the raw material, and the rest is in the form of returned material. These returned materials usually have more inclusions than new materials, and the content of harmful impurity elements (O, N, S, etc.) is high...
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Login to View More IPC IPC(8): C22C1/02C22B7/00C22B9/22
CPCC22B7/003C22B9/228C22C1/02Y02P10/20
Inventor 谭毅游小刚常凯王以霖王轶农
Owner DALIAN UNIV OF TECH