Continuous casting method for steel billets

• Main Authors: YAO YULEI, PENG HEPING, QIAO WEN
• Format: Patent
• Language: Chinese; English
• Published: 26.06.2013
• Subjects: CASTING; CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES; PERFORMING OPERATIONS; POWDER METALLURGY; TRANSPORTING

The invention relates to a continuous casting method for steel billets. The continuous casting method for the steel billets comprises the following steps. Crystallizer casting powder is added to a crystallizer, molten steel in a plurality of tundishes is injected into the crystallizer in sequence, and a continuous casting billet is pulled and rectified, wherein the molten steel in the tundishes is injected into the crystallizer under the condition that the pulling speed of the continuous casting fillet is larger than 0.8m/min. In the process of tundish changing and stopping injecting the molten steel into the crystallizer, the pulling speed of continuous casting is lowered to zero. After 2-5 seconds passes, pulling and rectifying are restarted with the pulling speed of 0.3-0.4m/min, and circulation is performed 2-4 times in such a way. Thus, the continuous casting billet is pulled to a tundish changing position, the crystallizer is taken out from large slag crust produced at the tundish changing position, and