High-temperature alloy low-component volatility cast ingot and preparation method thereof
The invention belongs to the technical field of metallurgy, and discloses a high-temperature alloy low-component volatility cast ingot and a preparation method thereof.The preparation method comprises the steps that raw materials are sequentially added into a cleaned crucible according to a preset p...
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Format: | Patent |
Sprache: | chi ; eng |
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Zusammenfassung: | The invention belongs to the technical field of metallurgy, and discloses a high-temperature alloy low-component volatility cast ingot and a preparation method thereof.The preparation method comprises the steps that raw materials are sequentially added into a cleaned crucible according to a preset proportion; carrying out primary vacuum induction melting to obtain a primary refined material; adding metal niobium into the primary refined material and carrying out secondary vacuum induction melting to obtain a secondary refined material; adding high-purity graphite into the secondary refined material and carrying out tertiary refining to obtain a tertiary refined material; after power failure and film formation, metal prone to burning loss is added into the third-time refined material and stirred, then silicon calcium is inserted for deep deoxidation and microalloy modification, and a casting material is obtained; and casting by using the casting material to obtain a cast ingot. Through crucible treatment, raw |
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