Production method of low-titanium bearing steel

The invention relates to a production method of low-titanium bearing steel. The steel comprises the following chemical components in percentage by weight: 0.95%-1.05% of C, 0.15%-0.35% of Si, 0.25%-0.45% of Mn, 1.40%-1.65% of Cr, less than or equal to 0.025% of P, less than or equal to 0.020% of S,...

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Bibliographische Detailangaben
Hauptverfasser: JU YINJUN, ZENG FANZHENG, CHEN JUN, WANG XINMING, LIN DAN, LUO JINGXIAN
Format: Patent
Sprache:chi ; eng
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Beschreibung
Zusammenfassung:The invention relates to a production method of low-titanium bearing steel. The steel comprises the following chemical components in percentage by weight: 0.95%-1.05% of C, 0.15%-0.35% of Si, 0.25%-0.45% of Mn, 1.40%-1.65% of Cr, less than or equal to 0.025% of P, less than or equal to 0.020% of S, less than or equal to 0.0015% of Ti and the balance of Fe and inevitable impurities. A BOF + LF + VD + CC smelting technology is adopted, converter end point C is larger than or equal to 0.15%, slag is stopped by a sliding plate, alloy is added in the tapping process, and low-alkalinity slag charge larger than or equal to 3 kg per ton of steel is added after the converter; low-alkalinity slag is manufactured through an LF, deoxidation operation is not conducted in the smelting process, slagging-off operation is conducted after Ti is sampled to be smaller than or equal to 0.0008%, and it is guaranteed that slagging-off is clean After slagging-off, aluminum wires are fed for deoxidation, it is ensured that Al in molt