Flow control device for tundish in special-shaped billet continuous casting machine

Abstract

The invention provides a flow control device of a shaped blank continuous caster tundish, and belongs to the technical field of shaped blank continuous caster tundish process in ferrous metallurgy. The device comprises a current stabilizer 1, a baffle 2 and a slag retaining dam 3, the current stabilizer 1 is composed of an outer shell 7, a base plate 9 and an inner chamber wall 8; the baffle 2 is an integrative arc structure, two sides of the baffle are equipped with a trapezoidal groove 6, and upper edge of the baffle is 120-150mm higher than the current stabilizer; the slag retaining dam 3 is arranged at a middle position between two water gaps 4 of a middle casting flow and the baffle 2 of the trapezoidal groove 6 in a reverse V shape. The device optimizes liquid steel flow field in the shaped blank tundish, promotes floating foreign matter elimination, realizes even distribution of liquid steel temperature, reduces breakout casting pause and casting blank defect which are caused by high temperature of the intermediate flow; the service life of the tundish is up to 36 hours, molten steel remainders in the tundish and increase of casting blank waste head and scrap end are reduced, yield of the shaped blank is further enhanced, and the yield is up to more than 99.7%.

Description

technical field [0001] The invention relates to a flow control device for a tundish of a profiled billet continuous casting machine, which belongs to the technical field of profiled billet continuous casting tundish technology in iron and steel metallurgy. Background technique [0002] With the advancement of continuous casting technology, the tundish has changed from a traditional simple container to a reactor with metallurgical functions. It is not only used as a storage and distributor for molten steel, but also optimizes the flow field of molten steel by setting up a tundish flow control device. , has the metallurgical function of promoting the floating and removal of inclusions, reducing inclusions inside the slab, and changing the shape of inclusions. Due to the particularity of the section, the special-shaped billet continuous casting machine is a new continuous casting process integrating round billet, square billet and slab. The tundish has different process charact...

AI Technical Summary

Problems solved by technology

The defect is that there are several shunt holes on its side, which is beneficial to improve the service life, but loses the effect of promoting the floating of inclusions

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