KR960000296Y1 - Brick falling prevention structure of ladle - Google Patents

Abstract

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Description

Ladle hook hole edge and fall prevention structure

1 is a cross-sectional view of the present invention

2 is a detailed view of the main part of the present invention.

(a) is an enlarged view of portion “A” of FIG. 1

(b) is a side view of the support forbidden

(c) is a block diagram of the lower bracket and the support forbidden

(d) is a perspective view of FIG. 2 (c)

3 is a cross-sectional view of the ladle mechanism according to the prior art.

* Explanation of symbols for main parts of the drawings

2: cut off 4: lower bracket

5: permanent field 7: adjustment

10,11: caster ball refractory 15: body

20: now 100: ladle

The present invention relates to a lead attachment structure of the ladle rod, and more particularly, to improve the shape of the top edge used for the ladle rod, and to prevent the drop of the ladle rod from the magnesia carbonaceous lead of the slag line part. It's about structure.

In general, molten steel received from the converter is received through a ladle, and molten steel is injected into a tundish, which is a continuous casting process, through a secondary refining process (B. A. P. L. F. degassing, etc.).

In the ladle, the molten steel is transferred to the tundish through the secondary process while the molten steel stays. The ladle structure will be described in detail with reference to FIG.

The bottom portion of the ladle 100 is a permanent field castable 110, a built-in castable 120, alumina spinel-like castable 130 as a metal line portion on the wall portion, magnesia carbonaceous lead with a slag line portion on the top It consists of 140. The magnesia carbonaceous lead 140 of the slag line part is formed in a range of 600 to 700 mm in the direction of the ladle height in consideration of the slag line forming range by increasing the internal content according to the melting loss of the refractory used in the ladle according to the service life of the furnace. Done.

On the upper part of the slag line, the castable refractory 10 is used between the lower bracket 4 and the slag line 8 and the castable refractory 11 between the lower bracket 4 and the upper bracket 3. Will be used.

In the construction of the castable refractory materials 10 and 11, since the structure is conventionally not compact, the looseness occurs on the edge 8 at the time of hot disassembly attached to the ladle mouth, and the relaxation The molten steel and slag penetrates into the exposed portion, causing the roll opening and the dropping and the breaking of the shell to occur. The castable refractory 11, which is constructed between the upper bracket 3 and the lower bracket 4, is dropped and thus exposed to the shell. there is a problem.

This will be described in more detail as follows. In other words, the structure of the lead wire of the ladle lagu ball portion is a structure that flows without filling the castable refractory 10 when filling the castable refractory 10 between the slag line edge 8 and the lower bracket (4). When the castability of the castable refractory is reduced, the castable is not filled between the edge 8 of the slag line and the bracket 4, and the castable 11 between the upper bracket 3 and the lower bracket 4 is formed. ) It has a structure without proper support to support refractory material.

Therefore, in the conventional structure, the compact construction of the castable refractory materials 10 and 11 was substantially impossible.

The present invention has been devised to solve the above-described conventional problems, by densely filling a castable refractory between the slag line lead and the lower bracket to prevent the fall of the slag line lead and prevent the falling of the castable refractory. It is an object of the present invention to provide an anti-fallout structure of the ladle mechanism that can prevent the problem of frequent ladle repair.

In order to achieve the above object, the present invention, the adjusting edge is positioned on the upper surface of the slag line for the slag, while the adjusting edge is formed on one side is higher than the lower bracket while forming a curved portion and a hole in the upper surface, The support, which is inserted into the through hole of the lower bracket and inserted into the hole of the adjusting kite, has a flat body portion, a pin extending downward to the lower center thereof, and a plurality of anchor members at the upper one corner thereof with a plurality of anchor members. A plurality of pins are mounted along the circumferential direction, while the pins of the support forbidden are wound and positioned between the holes of the lower bracket, thereby providing the structure of the ladle lock part and the fall prevention structure.

Hereinafter, the present invention will be described in more detail with reference to the drawings.

The ladle lug portion to which the edge and the fall prevention structure according to the present invention is applied is connected to the upper bracket 3 and the lower bracket 4 to the steel bar 2 as in the prior art, and the permanent field 5 and Quasi-permanent field 6 is formed, the caster ball for metal line 9, which is a built-in refractory in contact with molten steel and slag, the lead for slag line 8, and the adjusting lead 7 on it. A castable refractory 10 is formed between the edge 7 and the lower bracket 4, and a castable 11 refractory is formed between the lower bracket 4 and the upper bracket 3.

The kite and fall prevention structure of the present invention is equipped with a support forbidden (20) to compensate for the structural weakness of the adjusting lead 7 and the castable refractory (10) (11), and adjusts so that the support (20) is settled The curved surface 7 and the hole 7b are formed in the upper surface of the edge 7.

In addition, the adjustment edge 7 is formed as the height of one side upper surface 7c is higher than the lower bracket 4, as shown in (c) and (d) of FIG. It is located between 2).

And the support forbidden 20 has a flat body portion 15 to form an arc-shaped curved surface as shown in (b) of Figure 2, the lower center of the body portion 15 of the circular rod shape A pin 14 is formed, and a plurality of anchor members 16 are formed at one upper edge of the body portion 15, while the pin 14 is connected to the body portion 15. The wool 17 is attached.

In this support 20, the pin 14 portion passes through the through hole 18 of the lower bracket 4, and is inserted into the hole 7b of the adjusting lead 7, and the lower end of the body portion 15 is lowered. The upper surface of the bracket 4, where the through hole 18 of the lower bracket 4 is larger than the diameter of the pin 14 to accommodate expansion of the refractory and the hole 18 Between the pin 14 and the wool (woo1) 17 is located.

A plurality of such supporting prohibitions 20 are mounted on the ladle roller portion as shown in FIG. 2D along the circumferential direction.

The present invention configured as described above is when the castable refractory 11 between the upper bracket 3 and the lower bracket 4 and the castable refractory 10 between the adjusting lead 7 and the lower bracket 4 are filled. First, a plurality of support tabs 20 are mounted on the adjusting lead 7 and the lower bracket 4, and when the castable refractory 10 is filled, the upper surface of the adjusting lead 7 forms a curved portion 7a. Since the one side surface 7c is higher than the lower bracket 4, a concave space may be formed, so that the castable refractory 10 may be densely packed.

In addition, even when the castable refractory 11 is constructed, the anchor member 16 on the support forbidden 20 is inserted into the castable refractory 11 to greatly increase the attachment area, thereby preventing dropping out.

As described above, according to the present invention, it is possible to prevent operation of the ladle steel due to molten steel and slag penetration and prevent ladle repair due to the prevention of lead, dropout, and loosening during the current dismantling work with the ladle fitting. There is.

In addition, since it is possible to prevent the exposure of the lower bracket 4 by preventing the lower bracket 4 from being exposed by having a shape that makes the height of the adjusting lead 7 which is a release twisted wire lower than the lower bracket 4, It is effective to prevent accidental ladle accident.

Claims (1)

In the joint attachment structure of the ladle rod part, The adjusting edge 7 is located on the upper surface of the slag line edge 8, and the adjusting edge 7 forms a curved portion 7a and a hole 7b on the upper side thereof, and one side surface 7c has a lower portion. The support forbidden 20, which is formed higher than the bracket 4 and is inserted into the through hole 18 of the lower bracket 4 and inserted into the hole 7b of the adjustment edge 7, has a flat body portion 15. And a pin 14 extending downwardly to the lower center thereof, and a plurality of anchor members 16 are mounted at one upper corner thereof, and a plurality of them are mounted along the circumferential direction of the ladle mechanism. The pin 14 of the) is a wool 17 is wound around the structure of the ladle opening and the fall prevention structure, characterized in that located between the holes 18 of the lower bracket (4).