Purified smelting process of a nickel-based superalloy rich in active elements

A technology of nickel-based superalloy and active elements, which is applied in the field of metal smelting and casting, can solve the problems of unfavorable casting quality control, unclear influence, sand sticking, etc., achieve low gas and impurity element content, uniform composition, and improve purity Effect
CN110735067BActive Publication Date: 2021-05-25INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
Publication Date
2021-05-25

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Abstract

The invention discloses a purified smelting process of a nickel-based superalloy rich in active elements, belonging to the technical field of metal smelting and casting. The process first prepares a master alloy ingot containing active elements: by weight percentage, the chemical composition of the master alloy ingot is: Cr 10-50%, Ti 5-30%, Al 0-1.0%, C 0.01-0.05% , Y 0.001~0.01%, A 0~5%, Ni is the balance; said A refers to trace elements; then use the master alloy ingot to smelt the master alloy; the principle of cutting master alloy is: do not add Cr or The elemental raw material of Ti element. The process of the invention can ensure the composition, impurities and gas requirements of the master alloy while shortening the smelting time, greatly improves the smelting efficiency and product quality of the master alloy, and has remarkable economic benefits.
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Description

technical field

[0001] The invention relates to the technical field of metal smelting and casting, in particular to a purification smelting process of a nickel-based superalloy rich in active elements. Background technique

[0002] Nickel-based superalloys are usually used to manufacture the main structural parts of gas, turbine and other engines, which need to serve in ultra-high temperature environments. In order to ensure the high temperature mechanical properties of the alloy, high content of active elements such as Cr, Ti, and Al are often added in the composition design. Among them, Cr is a high temperature oxidation resistant element, which can improve the high temperature corrosion resistance of the alloy; Ti and Al are the main constituent elements of the γ' phase, which can increase the volume fraction of the γ' strengthening phase in the alloy. However, since Cr, Ti, and Al raw materials often carry more gas elements, if they are not completely removed as much as...

Claims

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