Impact-resistant tundish dam wall

Abstract

The utility model relates to a related technical field of slag retaining wall, especially to a middle bag slag retaining wall of impact resistance, including the slag retaining wall base body, one end of the slag retaining wall base body is equipped with the buffer assembly, the inner wall of slag retaining wall base body is equipped with the circular truncated cone ring, the utility model discloses through the setting of buffer assembly, the shunt plate and the shunt hole on its surface can disperse the molten steel impact into many small streams, reduce the direct impact of molten steel to the slag retaining wall base body, prolong its life, the design of the circular truncated cone ring big end to the molten steel flow direction can guide the molten steel to enter the flow steel hole smoothly, reduce the direct impact of molten steel to the hole wall, the spiral flow guide groove in its inner wall makes the molten steel flow spirally, further disperses the impact force, thereby promotes the anti -expansion of flow steel hole, the fibre felt filled in the expansion joint of the slag retaining wall base body top has the heat -proof and buffering performance, can reduce the heat loss, can play the buffering effect when the slag retaining wall expands.

Description

Technical Field

[0001] This utility model relates to the technical field of slag retaining walls, and in particular to an impact-resistant tundish slag retaining wall. Background Technology

[0002] In the continuous casting process of steel, molten steel has a large impact force when it is poured from the ladle into the tundish. If it is difficult to effectively disperse and buffer this impact force, the slag retaining wall is easily damaged. Therefore, there is a special need for an impact-resistant tundish slag retaining wall.

[0003] A tundish retaining wall with authorization announcement number CN210280651U includes a main wall body. A first wall surface is fixedly provided on the front outer wall of the main wall body, and a second wall surface is fixedly provided on the back outer wall of the main wall body. A main reinforcing plate is fixedly provided at the top interior of the main wall body. A first lifting member and a second lifting member are fixedly connected to both ends of the top wall of the main wall body, respectively. A base plate is fixedly provided at the bottom of both the first and second lifting members. A lifting lug is fixedly connected to the top of the base plate, and a lifting lug hole is fixedly provided in the middle of the inner wall of the lifting lug. A first side wall body is fixedly provided on the left side wall of the main wall body, and a first side reinforcing plate is fixedly provided at the top interior of the first side wall body. A first steel flow port is fixedly provided at the bottom interior of the first side wall body. A second side wall body is fixedly provided on the right side wall of the main wall body. The structure is scientifically and rationally designed, has a relatively long service life, and possesses certain practical and promotional value.

[0004] However, in a type of tundish retaining wall, a single steel flow port is opened at the bottom of both the first and second side walls. When molten steel passes through the flow channel, the impact force is relatively concentrated, resulting in severe scouring of the inner wall of the retaining wall flow channel. This can easily lead to wear and deformation of the flow channel, thereby affecting the overall performance of the retaining wall.

[0005] To address the aforementioned issues, an impact-resistant tundish retaining wall is proposed. Utility Model Content

[0006] The purpose of this invention is to provide an impact-resistant tundish retaining wall to solve the problems of existing impact-resistant tundish retaining walls mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: an impact-resistant tundish retaining wall, comprising a retaining wall base, wherein a buffer component is provided at one end of the retaining wall base, and a frustum-shaped ring is provided on the inner wall of the retaining wall base;

[0008] The buffer assembly includes a flow divider plate installed on one side of the slag retaining wall base. The flow divider plate has flow divider holes on its surface and a force-bearing component at one end of the flow divider plate near the slag retaining wall base.

[0009] The frustum-shaped ring includes a spiral guide groove formed on its inner wall.

[0010] Preferably, the slag retaining wall base includes multiple sets of steel flow holes opened on its surface, and the top of the slag retaining wall base is provided with an expansion joint.

[0011] Preferably, the inner wall of the slag retaining wall base is provided with a magnesia-carbon brick reinforcing mesh, the top of the slag retaining wall base is provided with fiber felt, the top of the slag retaining wall base is provided with a zirconium slag line ceramic plate, and the inner wall of the zirconium slag line ceramic plate is provided with reinforcing ribs.

[0012] Preferably, the end of the force-bearing component away from the diversion plate abuts against one end of the slag-blocking wall base to disperse the impact force on the diversion plate.

[0013] Preferably, the magnesia-carbon brick reinforcing mesh is disposed on the inner wall of the steel flow hole, the angle between the axis of the steel flow hole and the surface of the slag retaining wall base plate is 15 degrees, and the end where the molten steel flows in is lower than the end where it flows out. The frustum-shaped ring is disposed on the inner wall of the magnesia-carbon brick reinforcing mesh, and the larger end of the frustum-shaped ring faces the direction of the molten steel flow.

[0014] Preferably, one end of the zirconium slag line ceramic plate is an arc-shaped protrusion, and the end of the zirconium slag line ceramic plate away from the protrusion is cast and connected to the slag retaining wall base through reinforcing ribs. An expansion joint is provided between the zirconium slag line ceramic plate and the slag retaining wall base, and the expansion joint is filled with fiber felt.

[0015] Preferably, the buffer assembly further includes bolts, and the diversion plate is installed at one end of the slag retaining wall base by bolts.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] The impact-resistant tundish retaining wall is equipped with a buffer component. The diversion plate and its surface diversion holes can disperse the impact of molten steel into multiple small streams, reducing the direct impact of molten steel on the retaining wall substrate and extending its service life.

[0018] The design of the frustum-shaped ring with the large end facing the direction of molten steel flow can guide the molten steel to enter the flow hole smoothly, reducing the direct impact of molten steel on the hole wall. The spiral guide groove on its inner wall makes the molten steel flow in a spiral shape, further dispersing the impact force, thereby improving the resistance of the flow hole to expansion.

[0019] The fiber felt filling the expansion joint at the top of the slag retaining wall base has heat insulation and cushioning properties, which can reduce heat loss and buffer the expansion of the slag retaining wall. Attached Figure Description

[0020] Figure 1 This is a schematic cross-sectional view of the overall structure of this utility model;

[0021] Figure 2This is a schematic diagram of the structure of the buffer assembly of this utility model;

[0022] Figure 3 This utility model Figure 1 Enlarged structural diagram at point A;

[0023] Figure 4 This is a schematic diagram of the structure of the slag retaining wall base of this utility model;

[0024] Figure 5 This is a schematic diagram of the structure of the zirconium slag line ceramic plate and the reinforcing ribs of this utility model.

[0025] In the diagram: 1. Slag retaining wall base; 101. Flow steel hole; 102. Expansion joint; 2. Buffer assembly; 201. Diversion plate; 202. Diversion hole; 203. Load-bearing component; 204. Bolt; 3. Frustum-shaped ring; 301. Spiral guide channel; 4. Magnesia-carbon brick reinforcing mesh; 5. Fiber felt; 6. Zirconium slag line ceramic plate; 7. Reinforcing ribs. Detailed Implementation

[0026] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0027] Example

[0028] like Figure 1-4 As shown, the device includes a slag retaining wall base 1, a buffer assembly 2 at one end of the slag retaining wall base 1, a frustum-shaped ring 3 on the inner wall of the slag retaining wall base 1, a plurality of flow steel holes 101 opened on its surface, a flow diverting plate 201 installed on one side of the slag retaining wall base 1, a flow diverting hole 202 opened on the surface of the flow diverting plate 201, a force-bearing member 203 at one end of the flow diverting plate 201 near the slag retaining wall base 1, and a bolt 204. The frustum-shaped ring 3 includes a spiral guide groove 301 opened on its inner wall.

[0029] It should be noted that in this embodiment, the diversion plate 201 is installed at one end of the slag retaining wall base 1 by bolts 204. When molten steel is injected from the ladle into the tundish and impacts the slag retaining wall, it first contacts the diversion plate 201. The diversion holes 202 evenly distributed on the diversion plate 201 will disperse the molten steel into multiple smaller streams, thereby dispersing the impact force of the molten steel. At the same time, after the diversion plate 201 is impacted by the molten steel, the force-bearing component 203 at the end of the diversion plate 201 near the slag retaining wall base 1 will... The impact force is further dispersed and transmitted to the slag retaining wall base 1, ensuring the stability of the diversion plate 201. After being dispersed by the diversion hole 202, the molten steel enters the frustum-shaped ring 3 on the inner wall of the slag retaining wall base 1. Since the large end of the frustum-shaped ring 3 faces the direction of the molten steel flow, it can better guide the molten steel to flow smoothly into the steel flow hole 101, reducing the direct impact of the molten steel on the hole wall. The spiral guide groove 301 opened on the inner wall of the frustum-shaped ring 3 guides the molten steel to flow in a spiral shape, further dispersing the impact force of the molten steel.

[0030] Among them, the steel flow hole 101 on the surface of the slag retaining wall base 1 is the channel for molten steel to pass through the slag retaining wall. The magnesia-carbon brick reinforcing mesh 4 set on the inner wall of the steel flow hole 101 enhances the structural strength of the steel flow hole 101, which can withstand the high temperature and scouring of the molten steel. The angle between the axis of the steel flow hole 101 and the plate surface of the slag retaining wall base 1 is 15 degrees, and the end where the molten steel flows in is lower than the end where it flows out. This inclined design is conducive to the smooth flow of molten steel.

[0031] like Figure 1 , 4 As shown in Figure 5, the top of the slag retaining wall base 1 is provided with an expansion joint 102, the inner wall of the slag retaining wall base 1 is provided with a magnesia-carbon brick reinforcing mesh 4, the top of the slag retaining wall base 1 is provided with a fiber felt 5, the top of the slag retaining wall base 1 is provided with a zirconium slag line ceramic plate 6, and the inner wall of the zirconium slag line ceramic plate 6 is provided with reinforcing ribs 7.

[0032] It should be noted that in this embodiment, the zirconium slag line ceramic plate 6 is located at the top of the slag retaining wall base 1. This part is in direct contact with the high-temperature molten slag. The zirconium slag line ceramic plate 6 has good erosion resistance. One end is designed as an arc-shaped boss to facilitate the dispersion of the impact force of the molten slag and reduce damage to the ceramic plate. The reinforcing rib 7 casts and connects the zirconium slag line ceramic plate 6 to the slag retaining wall base 1, which enhances the connection strength between the ceramic plate and the base and makes the entire slag retaining wall structure more stable. The fiber felt 5 filled inside the expansion joint 102 at the top of the slag retaining wall base 1 has good heat insulation and buffering performance and plays a buffering role when the slag retaining wall expands.

[0033] Working principle of this utility model:

[0034] Refer to the instruction manual appendix Figure 1-5The diversion plate 201 is installed at one end of the slag retaining wall base 1 by bolts 204. When molten steel is injected from the ladle into the tundish and impacts the slag retaining wall, it first contacts the diversion plate 201. The diversion holes 202 evenly distributed on the diversion plate 201 will disperse the molten steel into multiple smaller streams, thereby dispersing the impact force of the molten steel. At the same time, after the diversion plate 201 is impacted by the molten steel, the force-bearing component 203 at the end of the diversion plate 201 close to the slag retaining wall base 1 will further disperse and transmit the impact force to the slag retaining wall base 1, ensuring the stability of the diversion plate 201. The molten steel dispersed by the diversion holes 202 enters the frustum-shaped ring 3 on the inner wall of the slag retaining wall base 1. Since the large end of the frustum-shaped ring 3 faces the direction of molten steel flow, it can better guide the molten steel to smoothly enter the steel flow hole 101, reducing the direct impact of the molten steel on the hole wall. The spiral guide groove 301 opened on the inner wall of the frustum-shaped ring 3 guides the molten steel to flow in a spiral shape, further dispersing the impact force of the molten steel.

[0035] Among them, the steel flow hole 101 on the surface of the slag retaining wall base 1 is the channel for molten steel to pass through the slag retaining wall. The magnesia-carbon brick reinforcing mesh 4 set on the inner wall of the steel flow hole 101 enhances the structural strength of the steel flow hole 101, which can withstand the high temperature and scouring of the molten steel. The angle between the axis of the steel flow hole 101 and the plate surface of the slag retaining wall base 1 is 15 degrees, and the end where the molten steel flows in is lower than the end where it flows out. This inclined design is conducive to the smooth flow of molten steel.

[0036] The zirconium slag line ceramic plate 6 is located at the top of the slag retaining wall base 1. This part is in direct contact with the high-temperature molten slag. The zirconium slag line ceramic plate 6 has good erosion resistance. One end is designed as an arc-shaped boss to facilitate the dispersion of the impact force of the molten slag and reduce damage to the ceramic plate. The reinforcing ribs 7 are cast and connected to the zirconium slag line ceramic plate 6 and the slag retaining wall base 1, which enhances the connection strength between the ceramic plate and the base and makes the entire slag retaining wall structure more stable. The fiber felt 5 filled inside the expansion joint 102 at the top of the slag retaining wall base 1 has good heat insulation and buffering properties and plays a buffering role when the slag retaining wall expands.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An impact-resistant tundish retaining wall, comprising a retaining wall substrate (1), characterized in that: One end of the slag retaining wall base (1) is provided with a buffer component (2), and the inner wall of the slag retaining wall base (1) is provided with a frustum-shaped ring (3); The buffer assembly (2) includes a diversion plate (201) installed on one side of the slag retaining wall base (1), the surface of the diversion plate (201) is provided with diversion holes (202), and the end of the diversion plate (201) near the slag retaining wall base (1) is provided with a force-bearing member (203). The frustum-shaped ring (3) includes a spiral guide groove (301) on its inner wall.

2. The impact-resistant tundish retaining wall according to claim 1, characterized in that: The slag retaining wall base (1) includes multiple sets of steel flow holes (101) opened on its surface, and the top of the slag retaining wall base (1) is provided with an expansion joint (102).

3. The impact-resistant tundish dam according to claim 1, wherein: The inner wall of the slag retaining wall base (1) is provided with a magnesia-carbon brick reinforcing mesh (4), the top of the slag retaining wall base (1) is provided with a fiber felt (5), the top of the slag retaining wall base (1) is provided with a zirconium slag line ceramic plate (6), and the inner wall of the zirconium slag line ceramic plate (6) is provided with reinforcing ribs (7).

4. The impact-resistant tundish dam according to claim 1, wherein: The end of the force-bearing component (203) away from the diversion plate (201) abuts against one end of the slag retaining wall base (1) to disperse the impact force for the diversion plate (201).

5. The impact-resistant tundish retaining wall according to claim 3, characterized in that: The magnesia-carbon brick reinforcing mesh (4) is located on the inner wall of the steel flow hole (101). The angle between the axis of the steel flow hole (101) and the plate surface of the slag retaining wall base (1) is 15 degrees, and the end of the molten steel inflow is lower than the end of the outflow. The frustum-shaped ring (3) is located on the inner wall of the magnesia-carbon brick reinforcing mesh (4), and the large end of the frustum-shaped ring (3) faces the direction of the molten steel flow.

6. The impact-resistant tundish retaining wall according to claim 3, characterized in that: The zirconium slag line ceramic plate (6) has an arc-shaped protrusion at one end. The end of the zirconium slag line ceramic plate (6) away from the protrusion is connected to the slag retaining wall base (1) by a reinforcing rib (7). An expansion joint (102) is provided between the zirconium slag line ceramic plate (6) and the slag retaining wall base (1), and the expansion joint (102) is filled with fiber felt (5).

7. The impact-resistant tundish dam according to claim 1, wherein: The buffer assembly (2) also includes bolts (204), and the diversion plate (201) is installed at one end of the slag retaining wall base (1) by bolts (204).

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