CN201283418Y - Seal assembly of continuous casting crystallizer - Google Patents

Abstract

The utility model discloses a continuous casting crystallizer sealing component, wherein a continuous casting crystallizer comprises a dummy bar head and dovetail grooves which are arranged on the dummy bar head, the dummy bar head comprises an outer cambered surface, oblique planes of two dovetail grooves and a steel meeting surface, and ingot drawing auxiliary slots are arranged on the dovetail grooves. The continuous casting crystallizer sealing component also comprises at least two reinforced ribs which are placed in the dovetail grooves. The continuous casting crystallizer sealing component achieves the purpose of accelerating the molten steel solidification speed in the dovetail grooves through different effects of each part, and avoids spattering cold steel into a gap between the dummy bar head and a copper plate of the crystallizer, thereby intensifying the deformation resistance strength of a primary billet shell, cast-on breakout accidents due to primary billet shell crazing are avoided, and simultaneously the continuous casting crystallizer sealing component guarantees that the sealing operation of the crystallizer is rapid, and the ingot drawing function is not affected.

Description

The continuous cast mold black box

Technical field

The utility model relates to the metallurgical continuous casting technology, relates in particular to a kind of dummy bar head device of continuous cast mold.

Background technology

Nowadays, most of continuous casting enterprise generally all adopts iron nail bits and cooling block relatively simple for structure, that cost is cheap relatively to seal.But along with the continuous development of continuous casting technology,, reduce reasons such as maintenance cost, take off the ingot shape dummy bar head automatically and begin on conticaster, to be extensive use of for simplifying casting machine equipment.Because existing needs take off the ingot lowering or hoisting gear and assist to take off the shape and the plot ratio and not needing of the dummy bar head dovetail groove of ingot and take off the dovetail groove shape and the plot ratio of the dummy bar head of ingot lowering or hoisting gear bigger difference is arranged, " R " face and the distance between the crystallizer outer arc copper coin of particularly taking off the ingot dovetail groove automatically are short partially, nascent base shell is being subjected under the pulling force effect, cause a spot of distortion easily in this position, and at the bight of dovetail groove formation stress concentration point, be easy to cause the cracking of initial solidification shell, and form the bleed-out accident of watering of opening.So this traditional sealing means has no longer adapted to requirements of actual production.

The 1450 continuous casting unit that certain steel mill went into operation in 1998, just used the dummy bar head that takes off ingot automatically, owing to having adopted traditional crystallizer sealing means to the understanding of this problem is insufficient at that time, frequent opening taken place and watered the bleed-out accident in the result, cause great economic loss, also caused the passive situation of equipment and spare part turnover.

2004, the 3# of this steel mill slab conticaster was constructed and put into operation, and this casting machine has also adopted and taken off the ingot dummy bar head automatically, and the surface configuration of this dummy bar head by day the design is very peculiar, not is suitable for traditional crystallizer sealing means.Therefore be necessary to design the novel crystallizer black box of a cover.

Summary of the invention

The purpose of this utility model provides a kind of continuous cast mold black box, reach molten steel solidification speed in the quickening dovetail groove by the different effect of various piece, avoid being splashed in the gap between dummy bar head and the copper plate of crystallizer cold steel, thereby strengthen initial solidification shell resistance to deformation intensity, prevented to open the bleed-out accident of watering, guaranteed the quick of crystallizer sealing operation simultaneously and taken off the ingot function unaffected because of what initial solidification shell cracking formed.

The purpose of this utility model is achieved in that

A kind of continuous cast mold black box, continuous cast mold comprise a dummy bar head and a dovetail groove provided thereon, and dummy bar head comprises an extrados, the steel face is met on two dovetail groove inclined-planes and, have one on the dovetail groove and help and take off the ingot groove, also comprise: at least two reinforcements are placed in the dovetail groove.

Preferably, the number of reinforcement is 2～4.

Preferably, also comprise a reinforcement, be placed on and help on the holder ingot groove.

Preferably, two sealing plates are located at the corner on dovetail groove inclined-plane, and its adjacent two edges oppositely bends, and are buckled in the meeting on steel face and the extrados of dummy bar head respectively.

Preferably, also comprise two briquettings, wear a steel wire that oppositely bends on it, briquetting is pressed on the sealing plate respectively.

Preferably, also comprise a rod iron, be horizontally set with the corner that is connected between extrados and dovetail groove.

Preferably, comprise that also a pair of rigidity compresses angle square, be located at the transition corner of meeting steel face and extrados respectively.

Preferably, comprise that also 2～4 are helped splashproof web plate with fixed attention, are pressed on rigidity respectively and compress on the angle square.

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

1 accelerates dovetail groove and helps the condensation intensity of taking off the inner molten steel of ingot groove, avoids the bleedout accident to take place.And its sealing operation is convenient and swift, standardization is strong.The weight ratio prior art of seal is slightly light.

2 effectively control the influence degree that the dummy bar head body is subjected to the molten steel thermal stress, thus the service life of improving dummy bar head.Avoid watering the economic loss that the bleed-out accident causes because of opening.

3 fixing iron nail bits, the iron nail bits avoid spreading under flow into dovetail groove, the volume of the splendid attire molten steel of raising dovetail groove inside.

4 not only can improve the condensation rate of molten steel, can effectively control simultaneously molten steel in the degree of opening when watering of splashing.

Description of drawings

Fig. 1 is a dovetail groove reinforcement stereogram of the present utility model.

Fig. 2 is that dovetail groove reinforcement of the present utility model is installed profile.

Fig. 3 takes off ingot groove reinforcement stereogram for of the present utility model helping.

Fig. 4-1 and 4-2 are of the present utility model two symmetrical sealing plate stereograms.

Fig. 5-1 and 5-2 are of the present utility model two symmetrical briquetting stereograms.

Fig. 6 compresses the angle square stereogram for two symmetries of the present utility model.

Fig. 7 is the splashproof web plate stereogram with fixed attention that helps of the present utility model.

Fig. 8 is the three-dimensional explosive view of the light section black box of embodiment 1.

Fig. 9 is the installation diagram of Fig. 8.

Figure 10 is the three-dimensional explosive view of the big section black box of embodiment 2.

Figure 11 is the installation diagram of Figure 10.

Among the figure, 1 dummy bar head, 2 dovetail grooves, 3 sealing plates, 4 briquettings, 5 rod irons, 6 help with fixed attention splashproof web plate, and 7 compress angle square, 8 dovetail groove reinforcements, 9 help and take off ingot groove reinforcement, 10 extrados, 11 steel wires, 12 counterweights, 13 help and take off the ingot groove, 14 dovetail groove inclined-planes, 15 meet the steel face.

The specific embodiment

Embodiment 1

As Fig. 8, shown in 9, the crystallizer black box of present embodiment comprises sealing plate 3, briquetting 4, and rod iron 5 helps splashproof web plate 6 with fixed attention, compresses angle square 7, and dovetail groove reinforcement 8 helps and takes off ingot groove reinforcement 9 etc.Open when watering actual, when dummy bar head 1 insert slab caster mould inside calibrated altitude and static after, the operative employee can begin dummy bar head 1 is carried out the assembly seal approach successively, and is as follows respectively:

As Fig. 1, shown in 2, the dovetail groove 2 inner reinforcements 8 that look like to cooperate with its shape of placing at dummy bar head 1, concrete placement quantity can be set according to the width of dummy bar head 1, adopting 2 for the less dummy bar head 1 of width specifications gets final product, dummy bar head 1 for big section can adopt 4, adopts 2 reinforcements 8 in the present embodiment.The purpose of placing reinforcement 8 is to improve the condensation intensity of dovetail groove 2 inner molten steel, avoids the bleedout accident to take place.

As Fig. 4-1,4-2,5-1, shown in the 5-2,14 corner areas are placed two sealing plates 3 respectively on the dovetail groove inclined-plane of dummy bar head 1, and sealing plate 3 belongs to zinc coated sheet, by forming the shape of sealing plate 3 after shearing, the bending, its purpose avoids molten steel to flow in the gap of dummy bar head 1 dovetail groove inclined-plane 14 and copper plate of crystallizer, reduces and causes the bleedout risk.Also comprise two briquettings 4 simultaneously, be equipped with bending steel wire 11 on the briquetting 4, the steel wire 11 by bending is supported on the surface of the steel face 15 of meeting of dummy bar head 1 and dovetail groove 2 respectively and is close proximity on the surface of sealing plate 3.Its objective is that to avoid molten steel temperature too high so that burn the sealing plate 3 of thinner thickness in injection process, influence sealing effectiveness.In addition, sealing plate 3 and compact heap 4 can effectively protect dummy bar head 1 body to be subjected to the influence degree of molten steel thermal stress, the service life of effectively improving dummy bar head 1.

As shown in Figure 8, be connected the rod iron 5 that an appropriate length is placed in the corner between dummy bar head 1 extrados 10 and dovetail groove 2, and sprinkle a certain amount of iron nail bits at the exposed region of dummy bar head 1, exposed region does not comprise dovetail groove 2 zones.The purpose of rod iron 5 is that the iron nail bits under avoiding spreading flow into dovetail groove 2 easily, guarantees the volume of the splendid attire molten steel of dovetail groove 2 inside.

As Fig. 6, shown in 9, to place a pair of rigidity at the steel face of meeting 15 of dummy bar head 1 with the transition corner area of extrados 10 and compress angle square 7, malleation is above the iron nail bits.Its objective is to compress the iron nail bits, avoid the iron nail bits to flow into dovetail groove 2, can quicken the condensation rate of molten steel and protect the dummy bar head surface simultaneously.

As Fig. 7,9 place 2～4 and help splashproof web plate 6 with fixed attention in the symmetry of meeting on the steel face 15 of dummy bar head 1, and its effect not only can improve the condensation rate of molten steel, can effectively control molten steel simultaneously in the degree of opening when watering of splashing.Also comprise some counterweights 12, be located to help and coagulate on the splashproof web plate 6 that splashproof web plate 6 comes off to be used to prevent to help with fixed attention.

At this moment, dummy bar head 1 has sealed and has finished, and can begin to water steel production.

Embodiment 2

As Figure 10, shown in 11,, adopt 4 reinforcements 8 to cooperate and be located at (each two of two sides on the dovetail groove 2 when the specifications section of dummy bar head 1 during greater than 1900mm, spacing between the reinforcement 8 is controlled at 450～550mm, and this value can suitably change with the size of dovetail groove 2 length).

Simultaneously, take off ingot groove 13, need this moment to help to take off to place one ingot groove 13 in and help and take off ingot groove reinforcement 9 (Fig. 3), its objective is and quicken to help the molten steel acceleration condensation of taking off ingot groove 13 inside at this owing to offer to help at the middle part of big section dummy bar head 1.

The structure of the remaining component of present embodiment and embodiment 1 is identical, does not repeat them here.

Those of ordinary skill in the art will be appreciated that, above embodiment is used for illustrating the utility model, and be not to be used as qualification of the present utility model, as long as in connotation scope of the present utility model, to the variation of the above embodiment, modification all will drop in claims scope of the present utility model.

Claims (8)

1. continuous cast mold black box, continuous cast mold comprises a dummy bar head (1) and a dovetail groove (2) provided thereon, dummy bar head (1) comprises an extrados (10), steel face (15) is met on two dovetail groove inclined-planes (14) and, having one on the dovetail groove (2) helps and takes off ingot groove (13), it is characterized in that also comprising: at least two reinforcements (8) are placed in the dovetail groove (2).

2. continuous cast mold black box as claimed in claim 1 is characterized in that: the number of reinforcement (8) is 2～4.

3. continuous cast mold black box as claimed in claim 2 is characterized in that also comprising: a reinforcement (9) is placed on to help and takes off on the ingot groove (13).

4. as any described continuous cast mold black box of claim 1-3, it is characterized in that also comprising: two sealing plates (3), be located at the corner of dovetail groove inclined-plane (14), its adjacent two edges oppositely bends, and is buckled in respectively on the steel face of meeting (15) and extrados (10) of dummy bar head (1).

5. continuous cast mold black box as claimed in claim 4 is characterized in that also comprising: two briquettings (4), wear a steel wire (11) that oppositely bends on it, and briquetting (4) is pressed on respectively on the sealing plate (3).

6. continuous cast mold black box as claimed in claim 4 is characterized in that also comprising: a rod iron (5) is horizontally set with the corner that is connected between extrados (10) and dovetail groove (2).

7. continuous cast mold black box as claimed in claim 5 is characterized in that also comprising: a pair of rigidity compresses angle square (7), is located at the transition corner of meeting steel face (15) and extrados (10) respectively.

8. continuous cast mold black box as claimed in claim 6 is characterized in that also comprising: 2～4 are helped splashproof web plate (6) with fixed attention, are pressed on rigidity respectively and compress on the angle square (7).

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