Wheel steel preparation method, wheel steel and wheel
The invention discloses a wheel steel preparation method which comprises the following steps that refined molten steel is subjected to continuous casting to obtain a continuous casting billet, and the continuous casting billet comprises, by weight, 0.10%-0.12% of C, 0.24%-0.27% of Si, 1.80%-1.85% of...
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Format: | Patent |
Sprache: | chi ; eng |
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Zusammenfassung: | The invention discloses a wheel steel preparation method which comprises the following steps that refined molten steel is subjected to continuous casting to obtain a continuous casting billet, and the continuous casting billet comprises, by weight, 0.10%-0.12% of C, 0.24%-0.27% of Si, 1.80%-1.85% of Mn, smaller than or equal to 0.015% of P, smaller than or equal to 0.003% of S, 0.08%-0.12% of V, 0.052%-0.056% of Nb, 0.26%-0.28% of Cr, 0.025%-0.035% of Als, 0.010%-0.014% of N and the balance Fe and inevitable impurities; austenite in the continuous casting billet is homogenized, and alloy elements in the continuous casting billet are dissolved; two-stage rolling is carried out, the first-stage rolling enables the austenite to be recrystallized, and the second-stage rolling is that rolling is carried out in an austenite non-recrystallization area so as to refine the austenite; and after the second-stage rolling is finished, cooling is conducted, a bainite structure is generated in the cooling process, and a sec |
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