CN200970632Y

CN200970632Y - Top water gas circular bricks for continuous casting powring ladle

Info

Publication number: CN200970632Y
Application number: CN 200620044414
Authority: CN
Inventors: 施建平; 汪宁; 郑国平; 谢玉红; 刘国强
Original assignee: Baoshan Iron and Steel Co Ltd
Current assignee: Baoshan Iron and Steel Co Ltd
Priority date: 2006-07-31
Filing date: 2006-07-31
Publication date: 2007-11-07
Anticipated expiration: 2016-07-31

Abstract

This utility model relates to a upper water mouth fence brick which is used on the continuous casting pouring box in metallurgy industry, which adopts the integral molding structure with basic plate shape, one hole is provided in the middle, two ends incline upwards, which are contacted with upper water mouth and surrounding fire-resisting material construction structure, and one steel structural frame with one hole in the center is also included, which is installed in the seat brick region of permanent layer. Because the structural support effect of this utility model fence brick is obvious, the replacement of upper water mouth won't influence the inside lining brick structure of pouring box, when the hidden danger of looseness of pouring box inside lining structure is eliminated, the maintenance time of pouring box is greatly shortened, the cost of proof materials is reduced much.

Description

The continuous casting tundish upper nozzle encloses brick

Technical field

The utility model relates to the technical field of continuous casting tundish, relates in particular to a kind of filling pipe end that uses and enclose brick on the continuous casting tundish.

Background technology

Baosteel 1450 continuous casting technological transformation project tundish submersed nozzles are changed (being called for short " quick change ") project fast and were formally put into production at the beginning of 2004 11 months.According to the quick-replaceable former design of submersed nozzle, what adopt in the outer of tundish upper nozzle periphery ramming mass is brick structure, tundish uses once back (being generally 7～8 stoves), because of changing parts and tundish must overturn 180 ° in unsetting anti-unit construction position, the masonry construction that its peripheral refractory material forms takes place to become flexible even come off because of losing inner support, to such an extent as to this anti-material in two positions average life is less than 15 stoves, refractory consumption rises significantly and tundish repairing amount obviously increases, and is once having influence on the coupling of online volume of the circular flow of tundish and continuous casting production demand.When this structure uses the back to disintegrate at tundish at every turn, because filling pipe end and peripheral ramming mass must be replaced, the cavity structure that forms makes the brickwork construction of outer occur inwardly subsiding because of losing to support, basically each tundish of changing all needs to carry out the replacing building construction of outer refractory brick, difficulty of construction is big, repair cycle, long defective was difficult to avoid, when refractory material, cost of labor all rise, each repairing all produces destruction to the compactness of middle ladle-lining, and the security that tundish uses when continuous-casting steel pouring descends gradually.

Summary of the invention

The purpose of this utility model provides and a kind ofly can improve the anti-material life-span of tundish outer, waters the continuous casting tundish upper nozzle that the work of tundish long-life provides support under the condition and encloses brick for height connects.

The utility model utilizes the structure of annular prefabricated section to replace original brickwork construction, at filling pipe end, when ramming mass is changed, continuation provides support brick liner on every side, effectively prevent the loosening of brickwork construction, need constantly dig the harmful effect of repairing because of loosening, melting loss refractory material cost, tundish inner lining structure compactness to eliminate this zone brick.

The purpose of this utility model is achieved in that

A kind of continuous casting tundish upper nozzle encloses brick, its structure that is formed in one, be basic tabular, the centre has a hole, both ends are inclined upwardly, fit with filling pipe end and refractory material masonry construction on every side thereof, the described brick that encloses comprises that also a centre has the steel structure frame in a hole, places permanent layer brick cup zone.

The utility model makes it compared with prior art owing to adopted above-mentioned technical scheme, has following advantage and good effect:

After having adopted the utility model continuous casting tundish upper nozzle to enclose brick, because it is obvious to enclose the support structure effect of brick, filling pipe end does not produce any influence to the brick structure of middle ladle-lining in changing, after having adopted the well behaved aluminium zirconium of anti-molten steel scouring material, reached service life more than 220 stoves, when eliminating the loosening hidden danger of tundish inner lining structure, shortened tundish maintenance time greatly, the cost of anti-the material is also reduced significantly.

Description of drawings

Fig. 1 is the structural representation that the utility model filling pipe end encloses brick;

Fig. 2 is the plane of Fig. 1;

Fig. 3 is that the utility model filling pipe end encloses the position view of brick at tundish.

The specific embodiment

As Fig. 1, Fig. 2, shown in Figure 3, the structure of utilizing the utility model filling pipe end to enclose brick replaces original brickwork construction continuous casting tundish upper nozzle and encloses brick, the utility model filling pipe end encloses brick 1 structure that is formed in one, be basic tabular, the centre has a square hole 2, and both ends 3 are inclined upwardly, and fits with filling pipe end and refractory material masonry construction on every side thereof, enclose brick 1 and comprise that also a centre has the steel structure frame in a hole, places in the permanent layer brick cup zone.The utility model encloses brick and adopts the aluminium zirconium material that can reach the high life, at filling pipe end, when ramming mass is changed, continues brick liner is on every side provided support, and has prevented the loosening of brickwork construction effectively.Before improved tundish is built by laying bricks or stones, lay special-purpose steel construction square frame in permanent layer brick cup zone, require that circular hole exposes fully on the tundish iron-clad; Bag is after permanent layer is finished at the end, and brick cup and enclose the brick position and put the utility model filling pipe end and enclose brick on former requires the hole essentially concentric with iron-clad, enclose between brick and the permanent layer and use high-alumina chamotte, brickwork joint require with working lining build by laying bricks or stones standard (≤2mm); Enclose between brick and filling pipe end and use ramming mass, require from dividing three layers of ramming closely knit; Requirement coating covers around filling pipe end during the coating construction, manually smears coating is seamlessly transitted to filling pipe end.

The utility model filling pipe end encloses brick, and to change standard as follows:

Must change when 1, the crackle that encloses the brick top and bottom occurring running through;

2, enclose in the brick bore edges and unusual melting loss occurs or peel off, the degree of depth is greater than half of operation thickness;

3, unusual with operational layer brick seam crossing melting loss.

After adopting the utility model filling pipe end to enclose brick, when tundish is changed parts and upset, because of enclosing brick, the utility model filling pipe end is not subjected to change of external conditions to keep self structure stable, masonry construction to the periphery provides the good supporting effect simultaneously, no matter tundish overturns in any angle, whole tundish masonry construction can both keep tight, eliminated the loosening defective of bringing low, that the repairing amount is big of receiving a mandate of masonry construction, whole anti-material of building the zone by laying bricks or stones also is increased to present about 250 stoves service life thus, obtains good economic benefit.Result of the test shows, wrap this technology of having used 71 between merely hitting, reached 227 stoves the average life of tundish, successfully solved safety, cost problem that former design may bring for production smoothly, in time satisfied the requirement of continuous casting production the tundish turnover.

Though the utility model is illustrated hereinbefore according to preferred embodiment of the present utility model, but this does not represent that scope of the present utility model is confined to above-mentioned structure, those skilled in the art can be developed the equivalent substitution structure that at an easy rate after reading above-mentioned explanation, and these equivalent alternative structure are also within the scope that this case requires.

Claims

1. a continuous casting tundish upper nozzle encloses brick, it is characterized in that: its structure that is formed in one, be basic tabular, and the centre has a hole, and both ends are inclined upwardly, and fit with filling pipe end and refractory material masonry construction on every side thereof.

2. continuous casting tundish upper nozzle as claimed in claim 1 encloses brick, it is characterized in that: the described brick that encloses comprises that also a centre has the steel structure frame in a hole, places permanent layer brick cup zone.