Si-KILLED STEEL WIRE EXCELLENT IN FATIGUE CHARACTERISTIC AND SPRING USING THE SAME

PROBLEM TO BE SOLVED: To provide a Si-killed steel wire further excellent in a fatigue characteristic and a spring.SOLUTION: There is a Si-killed steel containing a specific chemical composition and in which 80% in the number contains a specific CaO-AlO-SiO-based inclusion, and an average compositio...

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Hauptverfasser:	SAKAI HIROAKI, OTA HIROMI, SUGIMURA TOMOKO, TAI TAKAFUMI, ONODA HIROYUKI, YOSHIDA YASUMASA
Format:	Patent
Sprache:	eng
Schlagworte:	ALLOYS BLASTING CHEMISTRY ENGINEERING ELEMENTS AND UNITS FERROUS OR NON-FERROUS ALLOYS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING LIGHTING MEANS FOR DAMPING VIBRATION MECHANICAL ENGINEERING METALLURGY METALLURGY OF IRON PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OFWROUGHT-IRON OR STEEL SHOCK-ABSORBERS SPRINGS THERMAL INSULATION IN GENERAL TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FERROUS METALS WEAPONS
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Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a Si-killed steel wire further excellent in a fatigue characteristic and a spring.SOLUTION: There is a Si-killed steel containing a specific chemical composition and in which 80% in the number contains a specific CaO-AlO-SiO-based inclusion, and an average composition of the CaO-AlO-SiO-based inclusion satisfying (3A) satisfies (3B). (3A) MnO+AlO+SiO≥80% and MnO>CaO when CaO+AlO+SiO+MgO+MnO is standardized as 100%. (3B) MnO:10 to 70%, AlO:3 to 50%, and SiO:20 to 75% when CaO+AlO+SiO+MgO+MnO is standardized as 100%.