Current stabilizer

Abstract

The utility model discloses a current stabilizer which comprises a current stabilizer body, a rear slag discharging groove is formed in a rear retaining wall of the current stabilizer body, a front slag discharging groove is formed in a front retaining wall of the current stabilizer body, a flow guide hole is formed in the front retaining wall of the current stabilizer body, and a temporary slag stopping wall is formed in the front slag discharging groove. And the top of the temporary slag stopping wall is higher than the bottom of the rear slag discharging groove. By arranging the corundum temporary slag stopping wall, steel slag can be discharged through the rear slag discharging groove, erosion to an impact area of the current stabilizer is reduced, the steel slag is prevented from directly entering a tundish to erode the tundish, the temporary slag stopping wall with the height of 120 mm collapses about 15 hours after steel pouring, the steel slag is discharged to the tundish, and the service life of the tundish is prolonged. The service life of the current stabilizer and the service life of the tundish are balanced, the expanding amount of the flow guide holes is effectively reduced, and the service life of the current stabilizer is prolonged to 30 hours.

Description

TECHNICAL FIELD

[0001] The utility model relates to metal smelting technical field, specifically a current stabilizer. BACKGROUND

[0002] The intermediate ladle current stabilizer is installed at the bottom of the impact area of the intermediate ladle and is used for stabilizing the molten steel flow in the intermediate ladle, promoting the floating of the steel slag and reducing the splashing of the molten steel. CONTENT

[0003] Therefore, the utility model wants to solve the technical problem in providing a kind of current stabilizer to avoid the collapse of the front retaining wall of current stabilizer, prolong the service life of current stabilizer.

[0004] To solve the above technical problems, the utility model provides the following technical scheme: a kind of current stabilizer, including the current stabilizer body, the rear retaining wall of the current stabilizer body is opened with rear slag discharge groove, the front retaining wall of the current stabilizer body is opened with front slag discharge groove, the front retaining wall of the current stabilizer body is opened with flow guide hole, temporary slag retaining wall is formed in the front slag discharge groove, the top of the temporary slag retaining wall is higher than the groove bottom of the rear slag discharge groove.

[0005] The height of the temporary slag retaining wall of the above-mentioned current stabilizer is 50-170mm.

[0006] The thickness of the temporary slag retaining wall of the above-mentioned current stabilizer is greater than or equal to the thickness of the front retaining wall.

[0007] The outer side wall surface of the front retaining wall is integrally formed with thickening layer, the front slag discharge groove and the flow guide hole are all through the thickening layer, and the outer side wall surface of the temporary slag retaining wall extends into the thickening layer.

[0008] The front slag discharge groove of the above-mentioned current stabilizer gradually inclines towards the direction away from the symmetry plane of the current stabilizer body from one end close to the inside of the current stabilizer body to one end away from the inside of the current stabilizer body;The number of the front slag discharge groove is two, and two front slag discharge grooves are symmetrically arranged on the front retaining wall about the symmetry plane of the current stabilizer body, and the included angle of two front slag discharge grooves is 78-98 °.

[0009] The aforementioned flow stabilizer has a body depth of 600mm; a front slag discharge groove depth of 170mm; a bottom width of 185-198mm; and a top width of 235-245mm.

[0010] In the aforementioned flow stabilizer, the liquid flow direction within the guide hole gradually tilts away from the symmetry plane of the flow stabilizer body from the inlet end to the outlet end; the liquid flow direction within the guide hole gradually tilts upward from the inlet end to the outlet end; the angle F between the axis of the guide hole and the symmetry plane of the flow stabilizer body is 39-49°; the angle G between the axis of the guide hole and the horizontal plane is 10-20°; the diameter of the guide hole is 110-130mm; and the vertical distance between the center of the outlet end of the guide hole and the bottom wall of the flow stabilizer body is 173mm.

[0011] The above-mentioned flow stabilizer has two flow guide holes, which are symmetrically arranged on the front baffle wall with respect to the body of the flow stabilizer; the distance between the outlet ends of the two flow guide holes is 835-855mm.

[0012] In the aforementioned type of flow stabilizer, a magnesia-carbon brick is provided on the inner bottom wall of the flow stabilizer body, and the gap between the magnesia-carbon brick and the inner side wall of the flow stabilizer body is filled with castable refractory.

[0013] In the aforementioned flow stabilizer, the temporary slag-blocking wall is a corundum block.

[0014] The technical solution of this utility model has achieved the following beneficial technical effects:

[0015] By setting up a temporary slag retaining wall made of corundum, steel slag can be discharged through the rear slag discharge groove, reducing erosion of the impact zone of the flow stabilizer and preventing steel slag from directly entering the tundish and eroding it. The 120 mm high temporary slag retaining wall collapses about 15 hours after steel pouring, discharging the steel slag towards the tundish, balancing the service life of the flow stabilizer and the service life of the tundish, and effectively reducing the expansion of the guide hole, thus increasing the service life of the flow stabilizer to 30 hours. Attached Figure Description

[0016] Figure 1 A three-dimensional structural diagram of the current stabilizer of this utility model;

[0017] Figure 2 A top view of the current stabilizer of this utility model;

[0018] Figure 3 This utility model Figure 2 Schematic diagram of the cross-sectional structure at point AA;

[0019] Figure 4 This utility model Figure 2a cross-sectional structure schematic view at B-B of figure 1;

[0020] Figure 5 The utility model discloses Figure 2 a cross-sectional structure schematic view at C-C of figure 1;

[0021] Figure 6 The utility model discloses Figure 2 a structure schematic view of E forward row slag groove;

[0022] Figure 7 The utility model discloses a top view structure schematic view of magnesium carbon brick;

[0023] Figure 8 The utility model discloses a symmetric plane top view structure schematic view of flow stabilizer.

[0024] The figure mark shows for: 1-flow stabilizer body;101-front retaining wall;102-retaining wall;2-back row slag groove;3-front row slag groove;4-temporarily retaining slag wall;5-thick layer;6-flow guide hole;7-magnesium carbon brick;8-symmetric plane. Specific implementation

[0025] A kind of flow stabilizer in the embodiment, please refer to Figures 1-2 , including flow stabilizer body 1, the depth of the flow stabilizer body 1 is 600 mm, back row slag groove 2 is set up on the retaining wall 102 of the flow stabilizer body 1, front row slag groove 3 is set up on the front retaining wall 101 of the flow stabilizer body 1, the front row slag groove 3 gradually inclines towards the direction away from the symmetric plane 8 of the flow stabilizer body 1 from the end close to the inside of the flow stabilizer body 1 to the end away from the inside of the flow stabilizer body 1, the quantity of the front row slag groove 3 is two, two front row slag grooves 3 are symmetrically set up on front retaining wall 101 about the symmetric plane 8 of the flow stabilizer body 1, as shown in Figure 8 , the imaginary plane of the left and right two side retaining walls of the flow stabilizer body 1 from center position is symmetric plane 8, the included angle of two front row slag grooves 3 is 78-98 °, the included angle of two front row slag grooves 3 in the embodiment is 88 °, can reduce the impact and erosion of steel slag to the corresponding wall surface of tundish.

[0026] As Figures 1-3As shown, the temporary slag retaining wall 4 is formed in the front slag discharge groove 3, the temporary slag retaining wall 4 is corundum material, the corundum material is filled into the front slag discharge groove 3, the thickness of the corundum material is the same as the thickness of the front retaining wall 101, a corundum block is formed, the top of the temporary slag retaining wall 4 is higher than the groove bottom of the rear slag discharge groove 2, the depth of the front slag discharge groove 3 is 170 mm, the height of the temporary slag retaining wall 4 is 50-170 mm, and the thickness of the temporary slag retaining wall is greater than or equal to the thickness of the front retaining wall; in other embodiments, the height of the temporary slag retaining wall 4 is selected as 170 mm, that is, the temporary slag retaining wall 4 completely fills the front slag discharge groove 3, and the front slag discharge groove 3 is completely blocked, in actual use, the two flow guide holes 6 are slightly expanded in diameter, the flow stabilizer has good slag retaining effect, but because the corundum material of the front retaining wall slag discharge port collapses too late, the steel slag stays in the flow stabilizer for too long, which causes the side retaining wall of the overflow port of the flow stabilizer to be eroded to the permanent layer, and there is a certain safety hazard; in other embodiments, the height of the temporary slag retaining wall 4 is selected as 50 mm, the temporary slag retaining wall 4 in the front slag discharge groove 3 collapses at 13 h of steel pouring, the side retaining wall of the overflow port is eroded normally, the residual thickness is 50-60 mm, and the safety hazard is eliminated, but the two flow ports are obviously expanded in diameter; in the embodiment, the height of the temporary slag retaining wall 4 is 120 mm, which can balance the erosion condition of the impact area and the expansion degree of the two flow guide holes 6, the temporary slag retaining wall 4 of the corundum material of the front retaining wall 101 of the optimized flow stabilizer collapses at about 15 h of steel pouring, the two flow guide holes 6 are slightly expanded in diameter after being taken offline, the flow stabilizer has good slag retaining effect, and the service life of the original flow stabilizer is improved from 24 hours to 30 hours.

[0027] As shown in Figure 6 The bottom width of the front slag discharge groove 3 is 185-198 mm, and the top width of the front slag discharge groove 3 is 235-245 mm, in the embodiment, the bottom width of the front slag discharge groove 3 is 190 mm, and the top width is 240 mm, in the actual manufacturing process, the size of the front slag discharge groove 3 can be kept within the tolerance range.

[0028] As shown in Figures 1-2 The front retaining wall 101 of the flow stabilizer body 1 is provided with a flow guide hole 6, and the liquid flow direction in the flow guide hole 6 gradually inclines away from the symmetry plane 8 of the flow stabilizer body 1 from the liquid inlet end to the liquid outlet end; as shown in Figures 3-4As shown, the liquid flow direction in the flow guide hole 6 gradually inclines upward from the liquid inlet end to the liquid outlet end; the angle F between the axis of the flow guide hole 6 and the symmetry plane 8 of the flow stabilizer body 1 is 39-49°; the angle G between the axis of the flow guide hole 6 and the horizontal plane is 10-20°; the diameter of the flow guide hole 6 is 110-130mm; the vertical distance between the axis of the liquid outlet end of the flow guide hole 6 and the inner bottom wall of the flow stabilizer body 1 is 173mm; the number of the flow guide holes 6 is two, the angle between the axes of the two flow guide holes 6 is 78-98°, and the two flow guide holes 6 are symmetrically arranged on the front baffle wall 101 with respect to the symmetry plane 8 of the flow stabilizer body 1; the hole distance of the liquid outlet ends of the two flow guide holes 6 is 835-855mm. The angle and diameter of the flow guide hole 6 on the front baffle wall 101 have greater influence on the flow field structure of the casting area and less influence on the flow field structure of the impact area. Increasing the angle between the two flow guide holes 6 can improve the problem of serious wall erosion in the casting area, but will affect the temperature of the intermediate flow field in the tundish, causing the temperature of the intermediate flow field in the tundish to be lower than that of the flow field on both sides. Reducing the angle between the two flow guide holes 6 can cause the tundish to avoid serious erosion. In the embodiment, the angle between the axes of the two flow guide holes 6 is 88°, the diameter of the flow guide hole 6 is 120mm, and the angle G between the axis of the flow guide hole 6 and the horizontal plane is 10°. This can not only maximize the improvement of the problem of serious wall erosion in the tundish, but also improve the temperature balance of each flow.

[0029] As shown in Figure 1 , Figure 3 , the thickened layer 5 is integrally formed on the outer side wall surface of the front baffle wall 101, and the front slag discharge groove 3 and the flow guide hole 6 penetrate through the thickened layer 5. By arranging the thickened layer 5, the ability of the flow stabilizer to resist impact erosion can be improved, and the service life of the flow stabilizer can be improved.

[0030] As shown in Figure 3 , the magnesium-carbon bricks 7 are arranged on the inner bottom wall of the flow stabilizer body 1. The number of the magnesium-carbon bricks 7 is three, and the three magnesium-carbon bricks 7 are stacked. The gap between the magnesium-carbon bricks 7 and the inner side wall surface of the flow stabilizer body 1 is filled with castable, which is the same material as the material of the flow stabilizer body 1.

[0031] Obviously, the above embodiments are only examples for clear illustration, and are not intended to limit the embodiments. Based on the above description, other different forms of changes or variations can be made by those skilled in the art. Here, all the embodiments cannot be exhausted, and the obvious changes or variations derived therefrom are still within the protection scope of the claims of the present patent application.

Claims

1. A flow stabilizer, comprising a flow stabilizer body (1), wherein a rear slag discharge groove (2) is provided on the rear baffle wall (102) of the flow stabilizer body (1), a front slag discharge groove (3) is provided on the front baffle wall (101) of the flow stabilizer body (1), and a flow guide hole (6) is provided on the front baffle wall (101) of the flow stabilizer body (1), characterized in that, A temporary slag-blocking wall (4) is formed inside the front slag discharge groove (3), and the top of the temporary slag-blocking wall (4) is higher than the bottom of the rear slag discharge groove (2).

2. A current stabilizer according to claim 1, characterized in that, The height of the temporary slag retaining wall (4) is 50-170mm.

3. A current stabilizer according to any one of claims 1-2, characterized in that, The thickness of the temporary slag retaining wall (4) is greater than or equal to the thickness of the front retaining wall (101).

4. A current stabilizer according to claim 3, characterized in that, The outer side wall of the front retaining wall (101) is integrally formed with a thickened layer (5), the front slag discharge groove (3) and the guide hole (6) both penetrate the thickened layer (5), and the outer side wall of the temporary slag retaining wall (4) extends into the thickened layer (5).

5. A current stabilizer according to any one of claims 1-2, characterized in that, The front slag discharge groove (3) gradually slopes away from the inside of the stabilizer body (1) from one end close to the inside of the stabilizer body (1) towards the direction away from the symmetry plane (8) of the stabilizer body (1); there are two front slag discharge grooves (3), and the two front slag discharge grooves (3) are symmetrically opened on the front baffle (101) about the symmetry plane (8) of the stabilizer body (1), and the included angle between the two front slag discharge grooves (3) is 78-98°.

6. A current stabilizer according to any one of claims 1-2, characterized in that, The depth of the stabilizer body (1) is 600mm; the depth of the front slag discharge groove (3) is 170mm; the bottom width of the front slag discharge groove (3) is 185-198mm; and the top width of the front slag discharge groove (3) is 235-245mm.

7. A current stabilizer according to any one of claims 1-2, characterized in that, The liquid flow direction in the guide hole (6) gradually tilts away from the symmetry plane (8) of the stabilizer body (1) from the inlet end to the outlet end; the liquid flow direction in the guide hole (6) gradually tilts upward from the inlet end to the outlet end; the angle F between the axis of the guide hole (6) and the symmetry plane (8) of the stabilizer body (1) is 39-49°; the angle G between the axis of the guide hole (6) and the horizontal plane is 10-20°; the diameter of the guide hole (6) is 110-130mm; the vertical distance between the axis of the outlet end of the guide hole (6) and the inner bottom wall of the stabilizer body (1) is 173mm.

8. A current stabilizer according to any one of claims 1-2, characterized in that, The number of the flow guide holes (6) is two, and the two flow guide holes (6) are symmetrically arranged on the front baffle (101) about the symmetry plane (8) of the flow stabilizer body (1); the hole spacing of the liquid outlet end of the two flow guide holes (6) is 835-855mm.

9. A current stabilizer according to any one of claims 1-2, characterized in that, Magnesium carbon bricks (7) are provided on the inner bottom wall of the stabilizer body (1), and the gap between the magnesium carbon bricks (7) and the inner side wall of the stabilizer body (1) is filled with castable material.

10. A current stabilizer according to any one of claims 1-2, characterized in that, The temporary slag retaining wall (4) is a corundum block.

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