LF refining method of 1215MS high-sulfur free-cutting steel

• Main Authors: ZHOU XIAOLONG, XU YOUSHUN, LI LI, XUN ZHONGZHONG, LIU ZHILONG, HUANG HANZHE, CHEN WENGEN, ZENG LINGYU, MA HUAN, ZHU YONG, ZHAO JIANCHENG, WANG GUAN, LUO HUANXIN, CHEN BO
• Format: Patent
• Language: Chinese; English
• Published: 16.04.2024
• Subjects: CHEMISTRY; METALLURGY; METALLURGY OF IRON; PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OFWROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS

The invention discloses an LF (Ladle Furnace) refining method of 1215MS high-sulfur free-cutting steel. According to the LF refining method for the 1215MS high-sulfur free-cutting steel, the adding amount of the deoxidizing agent is calculated according to the oxygen content sampled in the argon station, the oxygen content sampled in the LF station and the oxygen content sampled in the LF sample 1, the oxygen content of the 1215MS high-sulfur free-cutting steel in the LF refining process is accurately controlled, and meanwhile the oxygen content of the 1215MS high-sulfur free-cutting steel in the LF refining process is accurately controlled according to the oxygen content sampled in the argon station and the oxygen content sampled in the LF station. And the adding amount of the lime and the fluorite is calculated, the slag alkalinity in the LF refining process of the 1215MS high-sulfur free-cutting steel is precisely controlled, and finally the purposes of controlling the free oxygen content of molten steel a