Preparation method of high-temperature alloy bar billet for thermal power generating unit valve
The invention discloses a preparation method of a high-temperature alloy bar billet for a thermal power generating unit valve, which is characterized by comprising the following steps: S1, selecting a bar billet of which the specification is phi 90mm, the carbide rating is less than or equal to grad...
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Main Authors | , , , , , , , , , |
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Format | Patent |
Language | Chinese English |
Published |
14.11.2023
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Subjects | |
Online Access | Get full text |
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Summary: | The invention discloses a preparation method of a high-temperature alloy bar billet for a thermal power generating unit valve, which is characterized by comprising the following steps: S1, selecting a bar billet of which the specification is phi 90mm, the carbide rating is less than or equal to grade 2 and the grain size is more than or equal to grade 3, and carrying out double-vacuum smelting of vacuum induction smelting and vacuum consumable remelting to obtain a cast ingot with the diameter of 490mm; s2, carrying out high-temperature homogenization heat treatment on the cast ingot in a natural gas furnace; s3, the cast ingot subjected to homogenizing heat treatment is subjected to three-heating-number blooming forging in an 80MN fast forging machine, blooming is continuous remelting, and the deformation amount of each heating number ranges from 30% to 50%; s4, the cogged blank is subjected to two-heating-number continuous remelting low-temperature drawing in an 80MN fast forging machine, and the deformatio |
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Bibliography: | Application Number: CN202310835822 |