IMMERSION NOZZLE FOR CONTINUOUS CASTING

• Main Authors: IIBOSHI HIROAKI, SHIRAGAMI TAKAYUKI, SATO TAKAHIRO
• Format: Patent
• Language: English
• Published: 18.12.2001
• Edition: 7
• Subjects: CASTING; CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES; PERFORMING OPERATIONS; POWDER METALLURGY; TRANSPORTING

PROBLEM TO BE SOLVED: To provide an immersion nozzle for continuous casting in order to obtain a cast slab excellent in surface and inner qualities by optimizing the fluidity of molten steel in a mold when the steel is continuously cast. SOLUTION: In the immersion nozzle for pouring the molten steel into the mold, the immersion nozzle for continuous casting, is formed as a structure having two spouting hole parts at right and left sides arranged at the side surfaces near the lower end of the nozzle and connecting with between the spouting holes at the bottom part by opening as a slitting state and arranges a rib in the orthogonal direction to the spouting and in the horizontal direction between both spouting holes or in the slit in the inner wall of the nozzle. Thus, the generation of stuck material on the spouting holes of the nozzle can be reduced, and the inner inclusion in the cast slab and the surface defect can be reduced by forming stable plug flow in the mold.