High-temperature bolt steel BG25Cr2MoVA and preparation method thereof

The invention discloses high-temperature bolt steel BG25Cr2MoVA and a preparation method thereof. The high-temperature bolt steel BG25Cr2MoVA comprises the following components of, by weight, 0.23-0.27% of C, 0.20-0.35% of Si, 0.54-0.62% of Mn, 0-0.015% of P, 0-0.012% of S, 1.64-1.72% of Cr, 0.28-0....

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Bibliographische Detailangaben
Hauptverfasser:	ZHANG QUN, ZHAO QIANSHUI
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ALLOYS CHEMISTRY CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS FERROUS OR NON-FERROUS ALLOYS GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS METALLURGY METALLURGY OF IRON MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OFWROUGHT-IRON OR STEEL TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Beschreibung
Zusammenfassung:	The invention discloses high-temperature bolt steel BG25Cr2MoVA and a preparation method thereof. The high-temperature bolt steel BG25Cr2MoVA comprises the following components of, by weight, 0.23-0.27% of C, 0.20-0.35% of Si, 0.54-0.62% of Mn, 0-0.015% of P, 0-0.012% of S, 1.64-1.72% of Cr, 0.28-0.32% of Mo, 0.20-0.24% of V, 0-0.15% of Ni, 0-0.15% of Cu, 0.020-0.040% of Alt, and the balance Fe and inevitable impurities. The high-temperature bolt steel BG25Cr2MoVA is high in steel purity degree, resistant to high temperature and fatigue, and stable in mechanical property. The preparation method is simple and practical, and the technology is stable. 本发明公开了种高温螺栓用钢BG25Cr2MoVA及其制备方法，其中，高温螺栓用钢BG25Cr2MoVA，按重量百分比，包括如下组分：C：0.23～0.27％，Si：0.20～0.35％，Mn：0.54～0.62％，P≤0.015％，S≤0.012％，Cr：1.64～1.72％，Mo：0.28～0.32％，V：0.20～0.24％，Ni≤0.15％，Cu≤0.15％，Alt：0.020～0.040％，余量为铁和不可避免的杂质。该高温螺栓用钢BG25Cr2MoVA钢质纯净度高，耐高温，耐疲劳，力学性能稳定，该制备方法简单，实用，工艺稳定。