Method for controlling surface cracks and slag inclusion of high-carbon alloy steel continuous casting slab

• Main Author: SONG JINGXIN
• Format: Patent
• Language: Chinese; English
• Published: 05.04.2024
• Subjects: ALLOYS; CASTING; CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES; CHEMISTRY; FERROUS OR NON-FERROUS ALLOYS; METALLURGY; PERFORMING OPERATIONS; POWDER METALLURGY; TRANSPORTING; TREATMENT OF ALLOYS OR NON-FERROUS METALS

The invention discloses a method for controlling surface cracks and slag inclusion of a high-carbon alloy steel continuous casting sheet billet. The method mainly solves the technical problems of surface cracks and slag inclusion of an existing high-carbon alloy steel continuous casting sheet billet. According to the technical scheme, the method for controlling the surface cracks and slag inclusion of the high-carbon alloy steel continuous casting sheet billet comprises the steps that (1) in the continuous casting process, the thickness of the continuous casting sheet billet ranges from 200 mm to 250 mm, the width of the continuous casting sheet billet ranges from 800 mm to 1600 mm, and a CaO-SiO2-Al2O3-Na2O-CaF2-B2O3 multi-element slag system is adopted as crystallizer casting powder; (2) in the continuous casting process, the pulling speed of a continuous casting machine is 0.3-1.5 m/min, and the superheat degree of tundish molten steel is 5-30 DEG C; and (3) in the continuous casting process, vibration par