Method for controlling magnesium content in high-temperature alloy

By using NiMg-MoO3-C-Mo composite alloy balls with similar density during the smelting of high-temperature alloy, the problem of magnesium volatility and low yield is solved, and the precise control of magnesium content and the improvement of high-temperature alloy performance is achieved.

CN119710335APending Publication Date: 2025-03-28FUJIAN ZHOUKAI NEW MATERIALS CO LTD
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Patent Information

Application Number
CN202411952611.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-27
Publication Date
2025-03-28

AI Technical Summary

Technical Problem

During the smelting of high-temperature alloys, magnesium is easy to volatilize and has low yield, making it difficult to accurately control the magnesium content.

Method used

During the vacuum induction melting process, NiMg-MoO3-C-Mo composite alloy balls with a density similar to that of the metal liquid can be added to the metal liquid, so that it settles rapidly and decomposes at high temperatures to prevent magnesium from volatilizing and improves the yield of magnesium.

Benefits of technology

It effectively improves the yield of magnesium, avoids magnesium volatility, ensures accurate control of magnesium content in high-temperature alloys, and improves the performance of the alloy.

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Abstract

The invention discloses a method for controlling the content of magnesium in a high-temperature alloy, and belongs to the technical field of special metallurgy. The scheme comprises the following steps: performing vacuum induction melting on each raw material according to the component requirements of the smelted high-temperature alloy; niMg-MoO3-C-Mo composite alloy balls are added into the vacuum induction molten metal liquid, smelting continues to be carried out, and alloying treatment of Mg is carried out; the ratio of the density of the NiMg-MoO3-C-Mo composite alloy balls to the density of the molten metal is 1.05-1.10, the NiMg-MoO3-C-Mo composite alloy balls comprise inner-layer pellets and Mo powder wrapping the inner-layer pellets, and raw materials of the inner-layer pellets comprise MoO3, C and NiMg alloy; the molten metal subjected to Mg alloying treatment is poured into a consumable electrode; and the consumable electrode is subjected to electroslag remelting, so that an electroslag ingot is obtained. According to the scheme, the NiMg-MoO3-C-Mo composite alloy balls with the density larger than that of the high-temperature molten metal are put into the high-temperature molten alloy, and the yield of Mg in the smelting process is effectively increased.
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