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A method of electron beam refining superalloy to promote desulfurization

An electron beam refining and superalloy technology, which is applied in the field of electron beam refining superalloy to promote desulfurization, can solve problems such as erosion, and achieve the effects of reducing impurity content, promoting high-purity production, and reducing manufacturing costs.

Active Publication Date: 2022-02-11
DALIAN UNIV OF TECH
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Problems solved by technology

The invention mainly utilizes the means of electron beam refining to desulfurize the high-temperature alloy, utilizes the characteristics of high vacuum and high temperature in the beam spot area of ​​electron beam refining, and strengthens the degassing reaction of S impurity elements; utilizes water-cooled copper crucible in the refining process without pollution Solve the problem of corrosion of crucible refractories in traditional crafts such as VIM; use the density difference between inclusions and melt and the special induced solidification mechanism of electron beams to promote the migration and enrichment of inclusions, and solve the ultra-purification of superalloy base metals question

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  • A method of electron beam refining superalloy to promote desulfurization
  • A method of electron beam refining superalloy to promote desulfurization

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[0046] 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.

[0047] 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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Abstract

The invention provides a method for promoting desulfurization by electron beam refining superalloys, comprising the following steps: S1, pretreatment of superalloy raw materials; S2, electron beam refining and purification of superalloys to obtain high-purity FGH4096 superalloy ingots. The invention utilizes the means of electron beam refining to desulfurize the high-temperature alloy, utilizes the characteristics of high vacuum and high temperature in the beam spot area of ​​electron beam refining, and strengthens the degassing reaction of S impurity elements; utilizes water-cooled copper crucible in the refining process without pollution Features, solve the problem of erosion of crucible refractory materials in traditional crafts such as VIM; utilize the density difference between inclusions and melt and the special induced solidification mechanism of electron beams to promote the migration and enrichment of inclusions, and solve the problem of ultra-purification of superalloy base metals .

Description

technical field [0001] The invention relates to a method for accelerating desulfurization of high-temperature alloys refined by electron beams. Background technique [0002] Superalloy materials are widely used in aerospace and other fields, and are important materials for manufacturing hot-end components in aerospace and other fields, such as modern aero-engines, industrial gas turbines and other key hot-end components (such as turbine blades, turbine disks, combustion chambers, etc.). Due to long-term extreme working environments such as high temperature, high speed, and high stress, there are extremely high requirements for high-temperature strength, creep, and fatigue properties of materials. The level of research and application is an important indicator of a country's comprehensive strength in material science. However, S impurity elements in superalloys tend to form low-melting eutectics, which reduce the plasticity of the material, and are also prone to segregation, ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B9/22C22C1/03
CPCC22B9/228C22C1/023C22C1/03Y02P10/25
Inventor 谭毅李毅李鹏廷游小刚
Owner DALIAN UNIV OF TECH
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