Method for improving continuous casting slab quality

The invention relates to a method for improving continuous casting slab quality and belongs to the technical field of continuous casting pouring. The superheat degree of a tundish is controlled to be 10-25 DEG C; tundish filling operation is performed for the tundish, the tonnage of the tundish is c...

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Bibliographic Details
Main Authors ZHANG LIWEI, ZHENG ZHANXIANG, CAO LEI, WANG GUOLIAN, XIE CUIHONG, QIN DENGPING, ZHONG JINGBO, SUN SHUNYI, WANG ZHENMING
Format Patent
LanguageEnglish
Published 30.09.2015
Subjects
CASTING
CASTING OF METALS
CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
PERFORMING OPERATIONS
POWDER METALLURGY
TRANSPORTING
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Summary:The invention relates to a method for improving continuous casting slab quality and belongs to the technical field of continuous casting pouring. The superheat degree of a tundish is controlled to be 10-25 DEG C; tundish filling operation is performed for the tundish, the tonnage of the tundish is controlled to be 41-45 t; the constant speed of a continuous casting machine is controlled to be 0.9-1.1 m/min; and the liquid level fluctuation of a crystallizer is controlled to be within +/-5 mm. The method has the advantages that the surface quality and internal quality of continuous casting slabs are improved; the slag entrapment in the crystallizer caused by the low liquid level of the tundish is effectively avoided, the content of continuous casting slab impurities is reduced, and the flaw detection pass rate is improved.
Bibliography:Application Number: CN20151334656