CN200960548Y - Continuous casting bakie - Google Patents

Abstract

The utility model discloses a pouring basket with an anti-block ring, used in continuous casting, comprising a basket cover, a rod, an upper nozzle with an inlet mounted with the anti-block ring with round section. And the upper face of the anti-block ring is wave shaped as best. Since the anti-block ring baffles the basket cover and the foreigner material fallen from the basket wall into the nozzle, in the roasting process, and the steel casting area eliminates the point check of immersion nozzle half hour before the pouring basket is boiled in the roasting process, to reduce the labor strength and avoid the nozzle being crack caused by the temperature reduction of the immersion nozzle. The anti-block ring has low cost, easy installment, and simple maintenance, with effectively improved normal application rate of the immersion nozzle to support safe steel production.

Description

The continuous casting tundish

Technical field

The utility model relates to a kind of continuous casting tundish.

Background technology

The continuous casting tundish is the in-line cuboid, and places, the mouth of a river high in the middle of the bottom, both sides are minimum.Tundish has played and has received the molten steel that ladle flows into, the effect of injecting molten steel to crystallizer in continuous casting production process; Played the molten steel shunting, reduced the impact of molten steel, removed the effect of field trash in the molten steel crystallizer; Be to realize the indispensable visual plant of sequence casting.

During continuous casting tundish quick baking (gas flow is big), the coating fireproof coating in the tundish comes off, clad waters material feeding, the refractory material of slag weir plate explosion flows in the tundish in the mouth of a river on the lowest part, in the SN slide hole.The stoving time overtime, iron oxide on the tundish clad is flowed in the filling pipe end by high temperature melting, both of these case all can influence the cured effect of exhausting formula submersed nozzle, causes submersed nozzle to water steel initial stage fracture abnormal off-line at tundish, has a strong impact on the ordinary production of watering steel.These are main causes of submersed nozzle abnormal off-line.

The utility model content

The purpose of this utility model mainly is to flow into the deficiency that filling pipe end causes the submersed nozzle abnormal off-line easily according to the cast in the continuous casting tundish of the prior art, iron oxide fusing back, provide a kind of and can prevent effectively that cast, iron oxide fusing back in the continuous casting tundish from flowing into filling pipe end, reduces the continuous casting tundish of submersed nozzle abnormal off-line rate.

For realizing above purpose, the utility model is achieved through the following technical solutions:

The continuous casting tundish comprises clad, stopper, and filling pipe end, the filling pipe end porch is placed with anti-blocking circle, and anti-blocking ring cross-section is circular, and anti-blocking circle highly is 1-10 centimetre.

Preferably, described anti-blocking circle internal diameter is greater than the filling pipe end diameter.

Preferably, described anti-blocking circle upper surface is a waveform.

Continuous casting tundish of the present utility model: because anti-blocking circle has stopped that in the tundish bake process foreign material that clad and Bao Bi fall enter the mouth of a river, water the steel operation area also cancelled submersed nozzle in bake process, the centre unwrap water before halfhour spot check, alleviated operative employee's labour intensity, the submersed nozzle temperature drop causes opening the possibility of watering the mouth of a river, back cracking when having stopped owing to spot check.

Not only cost is low for the anti-blocking circle of tundish upper nozzle, good looking appearance, and easy for installation, safeguard simply, effectively improve the normal function rate of tundish submersed nozzle, for solid foundation has been established in the safe operation of STEELMAKING PRODUCTION.

Description of drawings

Fig. 1 is the structural representation of the utility model continuous casting tundish;

Fig. 2 is the structure chart of anti-blocking circle.

The specific embodiment

Below in conjunction with accompanying drawing specific embodiment of the utility model is done a detailed description:

Referring to Fig. 1, Fig. 2, continuous casting tundish, comprise clad 1, stopper 5, filling pipe end 2, filling pipe end 2 porch are equipped with anti-blocking circle 3, anti-blocking circle 3 cross sections are circular, anti-blocking circle 3 highly is 10 centimetres, and anti-blocking circle 3 height can be selected different height as required, and anti-blocking circle 3 internal diameters are greater than filling pipe end 2 diameters, the upper surface of anti-blocking circle 3 is distributed with a plurality of protruding 4, and making anti-blocking circle upper surface is waveform.

During installation, stopper 5 moves apart the filling pipe end inlet, and anti-blocking circle 3 is installed in filling pipe end 2 porch before clad 1 sealing, can prevent during baking that foreign material from falling into filling pipe end, and when molten steel injected tundish, anti-blocking circle 3 come-ups clogged filling pipe end with stopper 5.

The formulation of anti-blocking circle installation requirement and relevant job requirements is the come-up that helps anti-blocking circle, answers following operation:

1. will be after the coated coating health, coating is installed anti-blocking circle by the wet back that becomes dry;

2. to aim at horn ring center, the mouth of a river;

3. anti-blocking circle lower edge will be close to coating and not clung by coating

4. the unavailable anti-blocking circle that crackle is arranged.

5. guarantee that stopper shaven head and filling pipe end use tight when closing at stopper, not going out cast-in-place steel opens automatic outflow molten steel phenomenon when watering and (opens and water as long as molten steel takes place to flow out automatically, the steel stream vortex that the anti-blocking circle in the mouth of a river will be produced is held, the anti-blocking circle in the mouth of a river just can not float, and flows into crystallizer in molten steel casting).

6. want standard pocket block place horn mouth size dimension, promptly can not be big, can not be little.Horn mouth is excessive, and anti-blocking circle is put in the horn mouth, and the coating that is inflated easily blocks, and causes anti-blocking circle not float; Horn mouth is too small, influences the stopper operation, causes the stopper head to ride over the horn mouth place easily and can not close steel stream, loses the effect that steel is watered in stopper control, therefore requires to use when the coating operation particular manufacturing craft.

Make the anti-blocking circle of water nozzle, the submersed nozzle accident rate obviously reduces (less than below 2%) direct economic benefit: submersed nozzle accident rate 5% before improving is an example with Baoshan Iron and Steel Group's use amount, and annual submersed nozzle installation was 5968 in 05 year, 2500 yuan of every mouth of a river average unit prices, reduce consuming:

5968 * (5%-2%) * 2500=447600 unit.

The tundish that anti-blocking circle has been installed is tested, and experimental result is as follows:

Date	Middle Bale No.	Time	Steel grade	Connect and water the stove number	Stream number
						2004.11.6	17	11:13~16:02	AN	6	1st
2005.2.27	10	11:00~14:19	AP	5	2st
						2005.2.28	11	10:12~15:06	AP	7	1st、2st
2005.8.14	8	10:51~18:03	AP	10	1st、2st

From above four times experimental result, the casting reflection is normal, and anti-blocking circle does not have cracking and opens and water non-rising phenomenon in experimentation; Clean no-sundries in the mouth of a river.The wherein preceding contrast of carrying out the submersed nozzle cured effect twice, the baking situation indifference at two mouths of a river.

Embodiment in the utility model only is used for the utility model is described, and does not constitute the restriction to the claim scope, and other substituting of being equal in fact that those skilled in that art can expect are all in the utility model protection domain.

Claims (3)

1. the continuous casting tundish comprises clad, stopper, and filling pipe end is characterized in that, and the filling pipe end porch is placed with anti-blocking circle, and anti-blocking ring cross-section is circular, and anti-blocking circle highly is 1-10 centimetre.

2. continuous casting tundish according to claim 1 is characterized in that, described anti-blocking circle internal diameter is greater than the filling pipe end diameter.

3. continuous casting tundish according to claim 1 is characterized in that, described anti-blocking circle upper surface is a waveform.

Images