Die steel with a high thermal diffusion coefficient and its preparation methods
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United States of America Patent
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Issued Date -
Feb 29, 2024
app pub date -
Mar 9, 2022
filing date -
Jan 18, 2022
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Abstract
A die steel with a high thermal diffusion coefficient includes 0.30-0.40 wt. % of C, 0.05-0.10 wt. % of Si, 2.50-3.40 wt. % of Mo, 0.01-0.05 wt. % of Nb, 0.30-0.50 wt. % of Co, 0.01-0.05 wt. % of RE, the rest is Fe and unavoidable impurities, wherein in the die steel, P≤0.15 wt. %, S≤0.025 wt. %. A preparation method of the die steel includes steps of melting, electroslag remelting, electroslag ingot annealing, forging, spheroidizing annealing, quenching and tempering.
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