METHOD FOR CONTINUOUSLY CASTING STEEL

• Main Authors: KIYOSE AKITO, TEFUN MAKOTO, FUKUDA ATSUSHI
• Format: Patent
• Language: English
• Published: 19.03.1996
• Edition: 6
• Subjects: CASTING; CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES; PERFORMING OPERATIONS; POWDER METALLURGY; TRANSPORTING

PURPOSE: To provide a continuous casting method for steel producing a high quality cast slab having little crack on the surface layer and little inclusion and bubble. CONSTITUTION: Electromagnetic stirring developing circular flow in the horizontal direction to the molten steel in a mold is impressed and also, the direction spouting flow 6 of the molten steel from an immersion nozzle is made into the direction which does not pass through the center axis of the immersion nozzle and the parallel direction to the long sides 1a of the mold in the case of seeing from the upper part of the mold 1. Further, the directions of the circular flow of the molten steel near a meniscus in the mold by the electromagnetic stirring and the spouting flow from the immersion nozzle are made mutually in the reverse direction at the same long side 1a of the mold seeing from the upper part of the mold. By this method, the cast slab having little crack on the surface layer and little inclusion and bubble can be produced, and a grinding and cleaning in the production process can be omitted and also, the product yield is improved.