MOLD FLUX FOR CONTINUOUSLY CASTING STEEL

PROBLEM TO BE SOLVED: To avoid the generation of surface defect on a cold-rolled plate caused by the entrapment of mold powder and to prevent the generation of breakout and misalarm of the breakout caused by the shortage of lubrication, in a continuous casting of a steel. SOLUTION: The mold flux for...

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Bibliographische Detailangaben
Hauptverfasser: YAMAUCHI AKIRA, ISHIKAWA SAWAO, MITSUMUNE TAKAHIRO, KISHIMOTO YASUO
Format: Patent
Sprache:eng
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Zusammenfassung:PROBLEM TO BE SOLVED: To avoid the generation of surface defect on a cold-rolled plate caused by the entrapment of mold powder and to prevent the generation of breakout and misalarm of the breakout caused by the shortage of lubrication, in a continuous casting of a steel. SOLUTION: The mold flux for continuously coasting the steel is the one, in which the solidified temp. is 1100-1250 deg.C and a basicity index B defined with the equation is satisfied in the range of 1.7-2.2 and Al2 O3 is contained in the range of 4-10 wt.%. Then, the casting speed in the continuous casting is made to >=1.5 m/min.