Preparation method of steel for automobile engine rotor

• Main Authors: QI FENG, KAN KAI, ZHANG QUN
• Format: Patent
• Language: Chinese; English
• Published: 26.03.2024
• Subjects: ALLOYS; CASTING; CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES; CHEMISTRY; FERROUS OR NON-FERROUS ALLOYS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS; METALLURGY; METALLURGY OF IRON; MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; PERFORMING OPERATIONS; POWDER METALLURGY; PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OFWROUGHT-IRON OR STEEL; TRANSPORTING; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS

The invention discloses a preparation method of steel for an automobile engine rotor, and belongs to the technical field of special steel preparation. The steel for the automobile engine rotor comprises the following components in percentage by weight: 0.23%-0.27% of C, 0.20%-0.35% of Si, 0.42%-0.60% of Mn, less than or equal to 0.015% of P, less than or equal to 0.010% of S, 1.52%-1.70% of Cr, less than or equal to 0.25% of Ni, 0.26%-0.33% of Mo, 0.16%-0.25% of V, less than or equal to 0.15% of Cu and the balance of iron and inevitable impurities, and a steel bar for the automobile engine rotor is produced and manufactured by adopting an electric furnace + LF + VD + continuous casting smelting process, a rolling process and a heat treatment process. The indexes such as mechanical property, high hardness and high steel purity of finished steel of the steel bar for the automobile engine rotor are guaranteed, the surface quality level of the steel bar for the automobile engine rotor is guaranteed, the high-end