Micro-alloying martensite stainless steel for blades of water turbine and manufacturing method thereof

The invention relates to a micro-alloying martensite stainless steel for blades of a water turbine, the main chemical compositions of which comprise: less than or equal to 0.03 wt% of C, 10-15 wt% of Cr, 2.0-6.0 wt% of Ni, 0.5-1.1 wt% Mo, 0.04-0.20 wt% of V, 0.01-0.06wt% of N, 0.08-0.50wt% of Si, 0....

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Bibliographische Detailangaben
Hauptverfasser:	SUN SHUHUA, ZHENG YANGZENG, WANG ZHENHUA, LV ZHIQING, FU WANTANG, ZHANG YACAI
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 TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Beschreibung
Zusammenfassung:	The invention relates to a micro-alloying martensite stainless steel for blades of a water turbine, the main chemical compositions of which comprise: less than or equal to 0.03 wt% of C, 10-15 wt% of Cr, 2.0-6.0 wt% of Ni, 0.5-1.1 wt% Mo, 0.04-0.20 wt% of V, 0.01-0.06wt% of N, 0.08-0.50wt% of Si, 0.2-0.8 wt% of Mn, and the rest of Fe and inevitable trace impurity elements. The manufacturing method of the stainless steel comprises the following steps: high-quality scrap steel, chromium iron, ferronickel, ferromolybdenum, silicon iron, ferromanganese and vanadium nitrogen alloy are added to an electric arc furnace, a smelting temperature is 1500 to 1700 DEG C, then VOD refining is carried out, and a refining temperature is 1500 to 1700 DEG C; the molten steel is cast into a casting under a temperature of 1500 to 1700 DEGC, the casting is uniformly annealed under a temperature of 1100 to 1200 DEG C for 12 to 24 hours, stays warm under a temperature of 1000 to 1100 DEG C, and then is air-cooled to the room temper