CN201735774U

CN201735774U - Device for eliminating continuous casting tundish bottom eddy

Info

Publication number: CN201735774U
Application number: CN2010202365924U
Authority: CN
Inventors: 邢贵彬; 那廷权; 李泽林
Original assignee: Angang Steel Co Ltd
Current assignee: Angang Steel Co Ltd
Priority date: 2010-06-25
Filing date: 2010-06-25
Publication date: 2011-02-09
Anticipated expiration: 2020-06-25

Abstract

The utility model relates to the field of continuous casting, in particular to a device for eliminating continuous casting tundish bottom eddy; the device is characterized in that: eddy-eliminating firebricks are arranged at the shoulders of upper nozzle bricks of the tundish; the eddy-eliminating firebricks are arranged in radial direction relative to the nozzle. Compared with the prior art, the device for eliminating continuous casting tundish bottom eddy has the benefits: by changing tundish bottom structure, a flow filed of the tundish bottom liquid steel is changed, thereby effectively preventing the liquid steel eddy with slag from being dragged in a crystallizer on one hand, on the other hand, halt casting caused by that the liquid level of next pot tundish is lower than the critical liquid level is avoided during pot exchange. In addition, the liquid level of halt casting of the tundish is reduced. Slag dragging does not be worried owing to the halt casting of low liquid level, thereby improving metal yield.

Description

A kind of device of eliminating eddy current at the bottom of the continuous casting tundish bag

Technical field

The utility model relates to the continuous casting field, relates in particular to a kind of device of eliminating eddy current at the bottom of the continuous casting tundish bag.

Background technology

Because continuous casting tundish bag primary coat skinning loam height is concordant with pocket block, molten steel is in low liquid level and has very big kinetic energy in tundish, in the process that flows into crystallizer, because sudden change of flow speed, follow-up molten steel can not in time add to the centre, produces vortex phenomenon inevitably, very easily causes molten steel volume slag, also be unfavorable for simultaneously the steel inclusion come-up, cause scum silica frost above the molten steel to be involved in crystallizer and make strand the many problems of inclusion defect occur.

Summary of the invention

The purpose of this utility model provides a kind of device of eliminating eddy current at the bottom of the continuous casting tundish bag, and the vortex phenomenon when solving the low liquid level of tundish molten steel makes strand the many problems of inclusion defect occur.

For achieving the above object, the utility model is achieved through the following technical solutions:

A kind of device of eliminating eddy current at the bottom of the continuous casting tundish bag is characterized in that the brick cup shoulder is provided with the whirlpool refractory brick that disappears on middle water containing opening, and this whirlpool refractory brick that disappears radially is provided with respect to the mouth of a river.

Compared with prior art, the beneficial effects of the utility model are: by changing structure of ladle bottom, changed the flow field of molten steel at the bottom of the tundish bag, can effectively avoid molten steel eddy current volume slag to bring crystallizer on the one hand, improve slab quality, can avoid on the other hand in changing jar process, owing to wrapping liquid level subcritical liquid level in evening, the last machine of next jar is forced to disconnected watering, also can further reduce tundish and stop watering liquid level, needn't worry that low liquid level stops watering to cause the volume slag, improve recovery rate of iron.

Description of drawings

Fig. 1 is the utility model structural representation.

Among the figure: the 1-brick cup 4-mouth of a river 5-bag end refractory brick under the brick cup 3-mouth of a river that disappears on the refractory brick 2-mouth of a river, whirlpool

The specific embodiment

Below in conjunction with accompanying drawing the specific embodiment of the present utility model is described further:

See Fig. 1, a kind of device of eliminating eddy current at the bottom of the continuous casting tundish bag, brick cup 2 shoulders are provided with the whirlpool refractory brick 1 that disappears on middle water containing opening, and this whirlpool refractory brick 1 that disappears radially is provided with respect to the mouth of a river 4.General pocket block is a up-down structure, be embedded with the mouth of a river 4 on the mouth of a river under the brick cup 2 and the mouth of a river in the middle of the brick cup 3, at the bottom of the continuous casting tundish bag on the refractory brick 5 the coating height concordant with brick cup 2 on the mouth of a river, by changing structure of ladle bottom, changed the flow field of molten steel at the bottom of the tundish bag, the mutual collision effect of flowing that stops owing to the whirlpool refractory brick 1 that disappears with steel, molten steel flows into rotation no longer at a high speed in the tundish process, avoided the generation of eddy current, can effectively avoid molten steel eddy current volume slag to bring crystallizer on the one hand, improved slab quality, can avoid on the other hand in changing jar process, be forced to disconnected watering, also can further reduce tundish and stop watering liquid level owing to the last machine of next jar wraps liquid level subcritical liquid level in evening, needn't worry that low liquid level stops watering and cause the volume slag, improve recovery rate of iron.

Claims

1. a device of eliminating eddy current at the bottom of the continuous casting tundish bag is characterized in that the brick cup shoulder is provided with the whirlpool refractory brick that disappears on middle water containing opening, and this whirlpool refractory brick that disappears radially is provided with respect to the mouth of a river.