Molten metal conveying system for long-life hit ladle

Abstract

The long-service-life molten metal conveying system comprises a flow stabilizer and a protection pipe, the outlet end of the protection pipe faces the flow stabilizer, molten steel flows into the flow stabilizer through the protection pipe, a flow dividing layer is arranged in the flow stabilizer, a flow dividing channel is formed in the flow dividing layer, one end of the flow dividing channel is arranged in the impact direction of the molten steel, and the other end of the flow dividing channel is arranged in the impact direction of the molten steel. The other end of the flow dividing channel penetrates out of the flow dividing layer and is communicated with fluid in the inner space of the flow stabilizer, and the steel flow enters the flow dividing channel after impacting the flow dividing layer and is dispersed into multiple strands of steel flow. According to the flow stabilizer, the flow dividing blocks matched with one another are arranged in the flow stabilizer, the flow dividing channels extending in all directions are formed, when the flow stabilizer bears molten steel impact, the steel flow can be dispersed into a plurality of small steel flows in different flow directions, the molten steel impact speed is decreased, the impact force is reduced, and molten steel slowly reaches the bottom of the flow stabilizer through the flow dividing channels; the impact force of molten steel on the bottom of the flow stabilizer can be reduced to the maximum extent, and damage to the flow stabilizer or the ladle bottom is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of refractory materials for steel production, and more specifically to a long-life molten metal transmission system in a middle package. Background Art

[0002] The steel industry is a basic industry in my country. Tundish metallurgy is an important part of the steel production process. At present, with the extension of the life of the sizing nozzle to about 70 hours and the improvement of the life of the lining refractory of the tundish, the continuous pouring time of the tundish is getting longer and longer, even up to dozens of hours, which leads to more and more serious damage to the impact area of ​​the tundish. From the current on-site situation of the impact barrel of the steel plant: even if the bottom thickness of the flow stabilizer (or impact barrel, impact plate) is thickened to about 400-500mm, deep holes will still appear in the steel-affected parts, and some even penetrate the flow stabilizer (or impact barrel, impact plate), and even the bottom of the tundish is penetrated, resulting in steel leakage accidents. Summary of the invention

[0003] Therefore, the technical problem to be solved by the present invention is to provide a long-life tundish molten metal transmission system which can improve the service life of the tundish and related structures.

[0004] To solve the above technical problems, the present invention provides the following technical solutions: a long-life molten metal transmission system in a middle package, comprising a flow stabilizer and a protective tube, the outlet end of the protective tube being arranged toward the molten steel inlet of the flow stabilizer, the molten steel flowing into the flow stabilizer through the protective tube, a diversion layer being arranged in the flow stabilizer, a diversion channel being arranged in the diversion layer, one end of the diversion channel being arranged to face the impact direction of the molten steel, the other end of the diversion channel passing through the diversion layer and being fluidly conductive with the internal space of the flow stabilizer, after the steel flow impacts the diversion layer, the steel flow enters the diversion channel and is dispersed into multiple steel flows.

[0005] In the above-mentioned long-life molten metal transmission system of the middle package, the diversion channel includes a vertical channel arranged along the height direction of the diversion layer, one end of the vertical channel faces the impact direction of the molten steel, and the other end of the vertical channel extends toward the bottom of the flow stabilizer and is in fluid communication with the internal space of the flow stabilizer;

[0006] Or the diverter channel includes a vertical channel arranged along the height direction of the diverter layer, one end of the vertical channel faces the impact direction of the molten steel, and the other end of the vertical channel extends toward the bottom of the flow stabilizer and is in fluid communication with the internal space of the flow stabilizer; and the diverter channel also includes a horizontal channel arranged along the length and / or width direction of the diverter layer, the horizontal channel is in fluid communication with the vertical channel, and at least one end of the horizontal channel passes through the diverter layer and is in fluid communication with the internal space of the flow stabilizer;

[0007] Or the diversion channel includes a curved channel, one end of which faces the impact direction of the molten steel, and the other end of which is in fluid communication with the internal space of the flow stabilizer;

[0008] The diverter layer is a single monomer, and the diverter channel is located inside the single monomer; or the diverter layer is composed of a plurality of single monomers, and the diverter channel includes a gap formed between adjacent single monomers and / or a fluid channel formed inside the single monomer.

[0009] In the above-mentioned long-life molten metal transmission system, the diverter layer includes two or more diverter blocks that cooperate with each other, and the diverter blocks are arranged on the inner bottom wall of the flow stabilizer; the surface of the diverter block has an outer protrusion extending outward, and two adjacent diverter blocks are connected to each other through the outer protrusion, and the gap formed by the support of the two adjacent diverter blocks through the outer protrusion is the diverter channel;

[0010] Or the flow dividing layer includes two or more flow dividing blocks that cooperate with each other, and the flow dividing blocks are arranged on the inner bottom wall of the flow stabilizer; the surface of the flow dividing block has an outer protrusion extending outward, and the gap formed between two adjacent flow dividing blocks is the flow dividing channel;

[0011] The diverter block is an I-shaped diverter block, a twisted I-shaped diverter block, a W-shaped diverter block, a twisted W-shaped diverter block, a four-column radial diverter block, a four-legged hollow column diverter block, a cut-angle cut-edge pyramid hole cubic diverter block, a truncated cone diverter block, a conical diverter block, a prism-shaped diverter block or a pyramid-shaped diverter block or any combination thereof; the twisted I-shaped diverter block is formed by rotating one of the horizontal lines of the I-shaped diverter with one of the vertical lines of the I-shaped diverter as the axis of rotation at an angle greater than 0 degrees and less than or equal to 90 degrees; the twisted W-shaped diverter block is formed by rotating the middle horizontal line of the W-shaped diverter with one of the vertical lines of the W-shaped diverter as the axis of rotation at an angle greater than 0 degrees and less than or equal to 90 degrees; the four-column radial diverter block includes a central connection The block comprises a central connecting block and four cylinders or frustums, one end of each cylinder or frustum is fixed to the central connecting block, and the other end is away from the central connecting block and extends in different directions; the four-legged hollow column diverter block comprises a plate-like body, four prisms fixed to one plate surface of the plate-like body, and four prisms fixed to another plate surface of the plate-like body, the free end of each prism extends in a direction away from the plate-like body, and a through hole penetrating the plate surface is opened in the center of the plate-like body; the corner-cut and edge-cut pyramid-hole cubic diverter block is a cube with four corners cut off, the edges are cut off respectively and parallel to each edge, and a frustum hole is opened on each face, and the frustum holes on the opposite faces are fluid-conducting through the small head end.

[0012] In the above-mentioned long-life molten metal transmission system, an enhanced impact plate is arranged on the inner bottom wall of the flow stabilizer, and the diverter block is arranged on the surface of the enhanced impact plate; the diverter block is diffusely distributed on the inner bottom wall of the flow stabilizer with the enhanced impact plate as the center; there is a gap between the diverter block located on the outermost side and the inner vertical wall surface of the flow stabilizer.

[0013] The above-mentioned long-life molten metal transmission system in the middle package, the reinforced impact plate is an impregnation reinforced impact plate, a vacuum impregnation reinforced impact plate, a vacuum impregnation and then pressure-strengthening reinforced impact plate, a heat treatment and vacuum impregnation and then pressure-strengthening reinforced impact plate; inorganic impregnation or organic impregnation is adopted, and the inorganic impregnation uses alumina sol, chromium oxide sol, zirconium oxide sol, spinel sol, silicon oxide sol or a composite inorganic sol of two or more of the above; preferably, the composite inorganic sol is alumina-chromium oxide Composite sol, chromium oxide-zirconia composite sol or magnesium aluminum spinel sol, the mass ratio of chromium oxide to zirconium oxide in the chromium oxide-zirconia composite sol is (1-2): (2-4); the strengthening impact plate is impregnated with the alumina-chromium oxide composite sol, and chromium oxide and alumina are infinitely dissolved at high temperature to form spinel chrome corundum; the organic matter is impregnated with one or two or more of asphalt, tar, anthracene oil or resin, and the resin is epoxy resin or phenolic resin; the strengthening impact plate is processed and manufactured by a floating workbench;

[0014] When preparing the reinforced impact plate and / or the diverter block, toughening nano powder is added to strengthen its microstructure. The amount of toughening nano powder used is 0-3% of the mass of the reinforced impact plate and / or the diverter block. The particle size of the toughening nano powder is less than or equal to 100 nanometers. The toughening nano powder is selected from magnesium oxide powder, α-alumina powder, zirconium dioxide powder or silicon dioxide powder; the particle size of the α-alumina powder is greater than 0 and less than or equal to 30 nanometers, so that the toughness of the reinforced impact plate and the diverter block is increased by more than 40%.

[0015] In the above-mentioned long-life middle bag molten metal transmission system, a protrusion is arranged on the inner side vertical wall of the flow stabilizer; at least one side wall steel outlet is opened on the side wall of the protection tube, and 0-3 bottom steel outlets are opened on the bottom of the protection tube; the total number of the side wall steel outlets and the bottom steel outlets is greater than or equal to 2, and the equivalent circular diameter of the total area of ​​the side wall steel outlets and the bottom steel outlets is 20-400mm.

[0016] In the above-mentioned long-life mid-bag molten metal transmission system, an edge diversion layer is arranged on the inner bottom wall of the flow stabilizer near the inner vertical wall, and the thickness of the edge diversion layer gradually decreases in the direction from the outside of the flow stabilizer to the center of the flow stabilizer, and the slope ratio of the edge diversion layer is less than 1:1.25.

[0017] In the above-mentioned long-life mid-package molten metal transmission system, the edge diversion layer includes more than two central fixed plates and support columns, the four corners of the central fixed plate are vertically fixedly connected with support columns, a through hole is opened in the center of the central fixed plate, a groove is opened on the side wall of the central fixed plate between two adjacent support columns, the support columns on two adjacent central fixed plates are fitted and connected to each other, and the direction of the support columns intersects with the bottom wall of the flow stabilizer.

[0018] In the above-mentioned long-life middle-package molten metal transmission system, a steel outlet is provided on the side wall of the protection tube.

[0019] The above-mentioned long-life mid-package molten metal transmission system, the flow stabilizer includes a bottom plate, a U-shaped inner frame and a U-shaped outer frame, the U-shaped inner frame and the U-shaped outer frame are both arranged on the bottom plate, a first opening is provided on one end of the U-shaped inner frame, a second opening is provided on one end of the U-shaped outer frame, the end of the U-shaped inner frame with the first opening is inserted into the U-shaped outer frame from the second opening, a first flow steel channel is formed between the side wall of the U-shaped outer frame and the side wall of the U-shaped inner frame, a flow steel hole is provided on the side wall of the U-shaped inner frame, the flow steel hole is fluidically connected with the first flow steel channel, a second flow steel channel is provided between the end of the U-shaped inner frame with the first opening and the vertical surface of the U-shaped outer frame, and the second flow steel channel is fluidically connected with the first flow steel channel.

[0020] The above-mentioned long-life molten metal transmission system of the package, the U-shaped inner frame includes a first inner side wall, a second inner side wall and a third inner side wall, the first inner side wall and the second inner side wall are two opposite side walls, the third inner side wall is sealed with the first end of the first inner side wall and the first end of the second inner side wall respectively, and the first opening is located between the second end of the first inner side wall and the second end of the second inner side wall; the U-shaped outer frame includes a first outer side wall, a second outer side wall and a third outer side wall, the first outer side wall and the second outer side wall are two opposite side walls, the third outer side wall is sealed with the first end of the first outer side wall and the first end of the second outer side wall respectively, and the second opening is located between the second end of the first outer side wall and the second end of the second outer side wall; the first flow steel is formed between the first inner side wall and the first outer side wall and / or between the second inner side wall and the second outer side wall The steel flow channel is provided on the first inner side wall and / or the second inner side wall. On the plane perpendicular to the flow direction of the molten steel in the first steel flow channel, the angle between the axis of the steel flow hole and the horizontal line is 15-25°; on the top plane passing through the steel flow hole, the axis of the steel flow hole is perpendicular to the flow direction of the molten steel in the first steel flow channel; the second steel flow channel is provided between the second end of the second inner side wall and / or the second end of the first inner side wall and the third outer side wall; the tops of the first inner side wall, the second inner side wall and the third inner side wall are all provided with convex edges connected to each other and extending toward the U-shaped inner frame, the portion of the third outer side wall located between the first inner side wall and the second inner side wall is provided with a convex edge extending toward the third inner side wall, and the two ends of the convex edge on the third outer side wall are respectively connected to the convex edge on the first inner side wall and the convex edge on the second inner side wall.

[0021] The above-mentioned long-life molten metal transmission system in the middle package, the diverter block is an impregnation-strengthened diverter block, a vacuum-impregnated-strengthened diverter block, a vacuum-impregnated and then pressurized-strengthened diverter block, a heat-treated and then vacuum-impregnated and then pressurized-strengthened diverter block; inorganic impregnation or organic impregnation is adopted, and the inorganic impregnation uses alumina sol, chromium oxide sol, zirconium oxide sol, spinel sol, silicon oxide sol or a composite inorganic sol of two or more of the above; preferably, the composite inorganic sol is alumina-chromium oxide composite The invention discloses a composite sol, a chromium oxide-zirconia composite sol or a magnesium aluminum spinel sol, wherein the mass ratio of chromium oxide to zirconium oxide in the chromium oxide-zirconia composite sol is (1-2): (2-4); after the strengthening impact plate is impregnated with the alumina-chromium oxide composite sol, chromium oxide and alumina are infinitely dissolved at high temperature to form spinel chrome corundum; the organic matter is impregnated with one or two or more of asphalt, tar, anthracene oil or resin, and the resin is epoxy resin or phenolic resin; the strengthening diverter block is manufactured by adopting a floating workbench.

[0022] The technical solution of the present invention achieves the following beneficial technical effects:

[0023] 1. When molten steel flows into the flow stabilizer from a higher position, the gravitational potential energy is almost completely converted into kinetic energy, and it will impact the bottom of the ladle at a relatively high speed. When the conventional flow stabilizer is strengthened, a dense thickening layer is generally installed at the bottom of the flow stabilizer. This design will rapidly reduce the high-speed steel flow rate to a stationary state. The thickening layer needs to withstand a very large impact force. Even if it is thickened to hundreds or even hundreds of millimeters, it is still difficult to resist the impact force of the molten steel. The present invention, by arranging mutually cooperating diversion blocks in the flow stabilizer to form a diversion channel extending in all directions, can disperse the steel flow into several small steel flows with different flow directions when subjected to the impact of molten steel, slow down the impact speed of the molten steel, reduce the impact force, and slowly reach the bottom of the flow stabilizer through the diversion channel, which can minimize the impact force of the molten steel on the bottom of the flow stabilizer, reduce damage to the flow stabilizer or the bottom of the ladle, and increase the service life. In addition, the diversion channel composed of multiple diversion blocks has a good energy storage effect, which can unload the impact energy of the steel flow, reduce the force of the molten steel splashing back to impact the protection tube, and correspondingly increase the service life of the protection tube.

[0024] 2. By arranging an outer convex portion on the diversion block and inserting the outer convex portion into the diversion channel, the molten steel is further refined when passing through the diversion channel, which is beneficial to further reduce the impact force of the molten steel.

[0025] 3. The protection tube has multiple steel outlets, which disperses the impact points on the centering package (impact barrel, flow stabilizer / impact plate), thus weakening the destructive effect and increasing the life of the impact barrel, flow stabilizer / impact plate.

[0026] 4. A protrusion is set on the vertical side wall of the flow stabilizer. When the impact plate is used to the limit, the protective sleeve can be tilted to impact the side wall, thereby reducing and extending the life of the flow stabilizer and even the middle package.

[0027] 5. The diverter block and impact plate are impregnated with inorganic sol / organic matter. The inorganic sol particles / organic matter fill the internal gaps, making the material structure denser and significantly improving the impact resistance.

[0028] 6. When preparing the materials of the diverter block and the impact plate, nano powders are introduced to fill the pores of the material and improve the microstructure. The introduction of non-agglomerated 0-30 nanometer α-alumina can increase the toughness by more than 40%.

[0029] 7. The floating workbench pressurization method is used to form the impact plate, which solves the problem of large-area refractory material forming and improves the density of large-area refractory materials of the impact plate.

[0030] 8. The double U-shaped inner and outer frames have a reverse sleeve-shaped structure flow stabilizer, which allows the steel to flow through the inner wall holes and the channel between the second end of the inner wall and the third outer wall and then enter the flow channel between the inner and outer walls. This flow field is not only conducive to the separation of slag and steel, but more importantly, it makes the liquid smoother, thereby reducing the impact on the package and extending the life of the middle package.

[0031] The double U-shaped inner and outer frame reverse sleeve structure flow stabilizer in the present invention breaks through the conventional closed flow stabilizer design, adopts a double-wall structure, and is designed as two stacked wall surfaces. This design not only opens up two parallel first flow field improvement channels, but also optimizes fluid dynamics. In addition, by reducing the dead zone volume inside the flow stabilizer, it effectively promotes the floating of inclusions in molten steel and improves the quality of the casting. The flow field flows smoothly, has little impact on the flow stabilizer and the tundish, and improves the service life of the flow stabilizer and the tundish. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 A schematic cross-sectional structure diagram of the present invention;

[0033] Figure 2 A schematic diagram of the structure of the twisted king-shaped shunt block in Example 1 of the present invention;

[0034] Figure 3 A schematic diagram of the structure of multiple prismatic flow diverter blocks cooperating with each other in Example 1 of the present invention;

[0035] Figure 4 A schematic diagram of the structure of an I-shaped shunt block in Example 2 of the present invention;

[0036] Figure 5 A schematic diagram of the structure of the diversion block in Embodiment 3 of the present invention;

[0037] Figure 6 A schematic diagram of the structure of the side center fixed plate or the four-legged hollow column diverter block in the present invention;

[0038] Figure 7 A schematic diagram of the structure of the edge diversion layer in the present invention;

[0039] Figure 8 A schematic diagram of a triangular pyramid-shaped flow diversion block in the present invention;

[0040] Fig. 9 A schematic diagram of the structure of the flow stabilizer in the present invention;

[0041] Fig.10 A schematic diagram of the structure of the Wang-shaped diverter block in the present invention;

[0042] Fig.11 A schematic diagram of the structure of an I-shaped diverter block in the present invention;

[0043] Fig.12The diverter block in Example 3 of the present invention is a schematic diagram of the structure of a four-column radial diverter block;

[0044] Fig.13 A schematic diagram of injecting molten steel into a tundish through the long-life tundish molten metal transmission system of the present invention;

[0045] Fig.14 A schematic diagram of the structure of the four-legged hollow column diverter block in the present invention;

[0046] Fig.15 A schematic structural diagram of a cubic diverter block with cut corners and pyramid holes in the present invention.

[0047] The reference numerals in the figure are represented as follows: 1- flow stabilizer; 2- protective tube; 3- diversion layer; 4- diversion channel; 5- vertical channel; 6- horizontal channel; 7- reinforced impact plate; 8- edge diversion layer; 81- central fixing plate; 82- support column; 83- through hole; 84- groove; 9- steel outlet; 10- diversion block; 101- outer convex part; 11- protrusion; 12- bottom plate; 13- U-shaped inner frame; 14- first inner wall; 15- second inner wall; 16- third inner wall; 17- U-shaped outer frame; 18- first outer wall; 19- second outer wall; 20- third outer wall; 21- first opening; 22- second opening; 23- first flow steel channel; 24- flow steel hole; 25- second flow steel channel; 26- convex edge. DETAILED DESCRIPTION

[0048] Example 1

[0049] The long-life molten metal transmission system in this embodiment is as follows: Figure 1 As shown, it includes a flow stabilizer 1 and a protection tube 2, the outlet end of the protection tube 2 is arranged toward the flow stabilizer 1, a steel outlet 9 is opened on the side wall of the protection tube 2, 2-4 steel outlets 9 are arranged on the side of the protection tube 2, and the bottom of the protection tube 2 is in a closed state. In some other embodiments, the bottom of the protection tube 2 can also be provided with a steel outlet 9.

[0050] like Figure 1 As shown, the molten steel flows into the flow stabilizer 1 through the protective tube 2. A diverter layer 3 is provided in the flow stabilizer 1. A diverter channel 4 is opened in the diverter layer 3. One end of the diverter channel 4 is arranged to face the impact direction of the molten steel, and the other end of the diverter channel 4 passes through the diverter layer 3 and is fluidly connected with the internal space of the flow stabilizer 1. After the steel flow impacts the diverter layer 3, it enters the diverter channel 4 and is dispersed into multiple steel flows.

[0051] The diverter channel 4 includes a vertical channel 5 arranged along the height direction of the diverter layer 3, one end of the vertical channel 5 faces the impact direction of the molten steel, and the other end of the vertical channel 5 extends toward the bottom of the flow stabilizer 1 and is fluidly connected with the flow stabilizer 1. The vertical channel 5 can be arranged parallel to the height direction of the diverter layer 3, or it can have a certain angle relative to the height direction of the diverter layer 3.

[0052] The diverter channel 4 further includes a horizontal channel 6 arranged along the length and / or width direction of the diverter layer 3, the horizontal channel 6 is arranged in the diverter layer 3 and / or between the diverter layer 3 and the flow stabilizer 1; the horizontal channel 6 is fluidically connected to the vertical channel 5, and at least one end of the horizontal channel 6 passes through the diverter layer 3 and is fluidically connected to the flow stabilizer 1. The horizontal channel 6 is arranged in the horizontal direction, or has a certain angle with the horizontal direction.

[0053] like Figure 2-3 As shown, the diverter layer 3 includes more than two diverter blocks 10 that cooperate with each other. The diverter blocks 10 are arranged on the inner bottom wall of the stabilizer 1; the surface of the diverter block 10 has an outwardly extending convex portion 101, and two adjacent diverter blocks 10 are connected to each other through the convex portion 101. The gap formed by the support of the two adjacent diverter blocks 10 through the convex portion 101 is the diverter channel 4. The shape of the diverter block 10 in this embodiment is as follows Figure 2 The twisted Wang-shaped shunt block shown in the figure (the twisted Wang-shaped shunt block is formed by rotating 90 degrees from the middle horizontal line of the Wang character with the vertical line of the Wang character as the rotation axis), the two ends of the shunt block 10 are provided with convex parts 101, and they are parallel to each other, and the middle part of the shunt block 10 is also provided with a convex part 101, and the convex parts 101 at both ends of the shunt block 10 and the convex parts 101 in the middle part of the shunt block 10 are arranged perpendicular to each other, as shown in FIG. Figure 3 As shown, a plurality of prismatic diverter blocks 10 are combined and arranged to form a diverter layer 3 of an integrated structure, and have diverter channels 4 with different directions, which can play a role in diverting and reducing impact force. When specifically arranged, the diverter blocks 10 are arranged in two or more layers to play a better diverting role. Of course, this embodiment can also adopt Fig.10 The W-shaped diverter block shown.

[0054] like Figure 1 As shown, a strengthening impact plate 7 is arranged on the inner bottom wall of the flow stabilizer 1 , and the diverter block 10 is arranged on the surface of the strengthening impact plate 7 .

[0055] The reinforced impact plate 7 can be selected from an impregnated reinforced impact plate, a vacuum impregnated reinforced impact plate, a vacuum impregnated reinforced impact plate followed by pressurized reinforced impact plate, a heat treated reinforced impact plate followed by vacuum impregnated impact plate followed by pressurized reinforced impact plate; inorganic impregnation or organic impregnation is adopted, and the inorganic impregnation uses alumina sol, chromium oxide sol, zirconium oxide sol, spinel sol, silicon oxide sol or a composite inorganic sol of two or more of the above; the composite inorganic sol is preferably an alumina-chromium oxide composite sol, a chromium oxide-oxygen composite sol, a spinel sol, a silicon oxide sol or a composite inorganic sol of two or more of the above; The reinforced impact plate is impregnated with alumina-chromium oxide composite sol or magnesium aluminum spinel sol, and the mass ratio of chromium oxide to zirconium oxide in the chromium oxide-zirconium oxide composite sol is (1-2): (2-4); the reinforced impact plate is impregnated with alumina-chromium oxide composite sol, and chromium oxide and alumina are infinitely dissolved at high temperature to form spinel chromium corundum; the organic matter is impregnated with one or two or more of asphalt, tar, anthracene oil or resin, and the resin is epoxy resin or phenolic resin; the reinforced impact plate 7 of this embodiment is processed and manufactured using a floating workbench;

[0056] The diverter block is an impregnation-strengthened diverter block, a vacuum-impregnated-strengthened diverter block, a vacuum-impregnated and then pressurized-strengthened diverter block, or a heat-treated and vacuum-impregnated and then pressurized-strengthened diverter block; inorganic or organic impregnation is used, and the inorganic impregnation uses alumina sol, chromium oxide sol, zirconium oxide sol, spinel sol, silicon oxide sol, or a composite inorganic sol of two or more of the above; preferably, the composite inorganic sol is alumina-chromium oxide composite sol, chromium oxide-oxygen composite sol, or alumina-chromium oxide composite sol. The invention discloses a zirconium oxide composite sol or magnesium aluminum spinel sol, wherein the mass ratio of chromium oxide to zirconium oxide in the chromium oxide-zirconium oxide composite sol is (1-2): (2-4); after the strengthening impact plate is impregnated with the alumina-chromium oxide composite sol, chromium oxide and alumina are infinitely dissolved at high temperature to form spinel chrome corundum; the organic matter is impregnated with one or two or more of asphalt, tar, anthracene oil or resin, and the resin is epoxy resin or phenolic resin; the strengthening diverter block is manufactured by adopting a floating workbench.

[0057] When preparing the reinforced impact plate 7 and / or the diverter block 10, toughening nano powder is added to strengthen its microstructure. The amount of toughening nano powder is 0-3% of the mass of the reinforced impact plate 7 and / or the diverter block 10. The particle size of the toughening nano powder is less than or equal to 100 nanometers. The toughening nano powder is selected from magnesium oxide powder, α-alumina powder, zirconium dioxide powder or silicon dioxide powder; the particle size of α-alumina powder is greater than 0 and less than or equal to 30 nanometers, so that the toughness of the reinforced impact plate 7 and the diverter block 10 is increased by more than 40%.

[0058] When manufacturing the reinforced impact plate 7, ultrafine powder is introduced to fill the pores, and its microstructure is strengthened by adding nano powder, the amount of nano powder added is 0-3wt.%, the particle size of the nano powder is greater than 0 nanometers and less than or equal to 100 nanometers, and the nano powder is chromium oxide powder, aluminum oxide powder, magnesium oxide powder, zirconium dioxide powder or silicon dioxide powder. After being formed by the manufacturing equipment, the reinforced impact plate 7 is impregnated and strengthened, and the reinforced impact plate 7 is impregnated and strengthened by placing it in a vacuum environment, impregnating the reinforced impact plate and then pressurizing it, or heating the reinforced impact plate and placing it in a vacuum environment and then impregnating it and then pressurizing it. The reinforced impact plate 7 is pressurized and formed by a floating workbench. Impregnation strengthening uses inorganic impregnation strengthening, such as aluminum oxide sol, chromium oxide sol, zirconium oxide sol or silicon oxide sol; it can also use organic impregnation strengthening, such as asphalt impregnation, tar impregnation, anthracene oil impregnation, resin impregnation, epoxy resin impregnation or phenolic resin impregnation. The porosity of the impact plate 7 can be reduced, the strength and thermal shock resistance can be improved, and the service life thereof can be increased.

[0059] The diverter block 10 is diffusely distributed on the inner bottom wall of the flow stabilizer 1 with the enhanced impact plate 7 as the center; there is a gap between the diverter block 10 located on the outermost side and the inner wall surface of the flow stabilizer 1, and a protrusion 11 is provided on the inner wall of the flow stabilizer 1.

[0060] like Figure 1 As shown, an edge diversion layer 8 is provided on the inner bottom wall of the flow stabilizer 1 near the inner vertical wall, and the thickness of the edge diversion layer 8 gradually decreases in the direction from the outside of the flow stabilizer 1 to the center of the flow stabilizer 1, and the slope ratio of the edge diversion layer 8 is less than 1:1.25.

[0061] like Figure 6-7 As shown, the edge diversion layer 8 includes more than two central fixing plates 81 and support columns 82. The four corners of the central fixing plate 81 are vertically fixedly connected with support columns 82. A through hole 83 is provided in the center of the central fixing plate 81. A groove 84 is provided on the side wall of the central fixing plate 81 between two adjacent support columns 82. The support columns 82 on two adjacent central fixing plates 81 are fitted and connected to each other, and the direction of the support columns 82 intersects with the bottom wall of the flow stabilizer 1. The support columns 82 fit the inner bottom wall of the flow stabilizer 1, and multiple central fixing plates 81 are arranged to gradually extend toward the inner vertical wall surface of the flow stabilizer 1 until they are connected to the inner vertical wall surface. In actual use, more than two layers of central fixing plates 81 can be stacked. By setting an inclined edge diversion layer 8, the molten steel flows toward the edge diversion layer 8 after impacting the diversion layer 3. The protruding support column 82 can disperse the steel flow. At the same time, the inclined state can increase the contact area with the steel flow and facilitate the molten steel to pass through the through hole 83 and the groove 84, thereby reducing the impact force on the edge of the flow stabilizer.

[0062] In this embodiment, if Fig. 9As shown, the flow stabilizer 1 includes a bottom plate 12, a U-shaped inner frame 13 and a U-shaped outer frame 17, the U-shaped inner frame 13 and the U-shaped outer frame 17 are both arranged on the bottom plate 12, one end of the U-shaped inner frame 13 has a first opening 21, one end of the U-shaped outer frame 17 has a second opening 22, one end of the U-shaped inner frame 13 with the first opening 21 is inserted into the U-shaped outer frame 17 from the second opening 22, a first flow steel channel 23 is formed between the side wall of the U-shaped outer frame 17 and the side wall of the U-shaped inner frame 13, a flow steel hole 24 is opened on the side wall of the U-shaped inner frame 13, the The flow steel hole 24 is fluidly connected with the first flow steel channel 23, and a second flow steel channel 25 is provided between one end of the U-shaped inner frame 13 having the first opening 21 and the vertical surface of the U-shaped outer frame 17, and the second flow steel channel 25 is fluidly connected with the first flow steel channel 23; specifically, the U-shaped inner frame 13 includes a first inner side wall 14, a second inner side wall 15 and a third inner side wall 16, the first inner side wall 14 and the second inner side wall 15 are two opposite side walls, and the third inner side wall 16 is respectively sealed and connected with the first end of the first inner side wall 14 and the first end of the second inner side wall 15, and the first opening 21 is located at The U-shaped outer frame 17 includes a first outer wall 18, a second outer wall 19 and a third outer wall 20, wherein the first outer wall 18 and the second outer wall 19 are two opposite side walls, and the third outer wall 20 is sealed and connected to the first end of the first outer wall 18 and the first end of the second outer wall 19 respectively, and the second opening 22 is located between the second end of the first outer wall 18 and the second end of the second outer wall 19; between the first inner wall 14 and the first outer wall 18 and / or between the second inner wall 15 and the third outer wall 20 The first steel flow channel 23 is formed between the second outer side walls 19, and the first inner side wall 14 and / or the second inner side wall 15 are provided with the steel flow hole 24. On a plane perpendicular to the flow direction of the molten steel in the first steel flow channel 23, the angle between the axis of the steel flow hole 24 and the horizontal line is 15-25°; on a top view plane passing through the steel flow hole 24, the axis of the steel flow hole 24 is perpendicular to the flow direction of the molten steel in the first steel flow channel 23; the second steel flow channel 25 is provided between the second end of the second inner side wall 15 and / or the second end of the first inner side wall 14 and the third outer side wall 20;The tops of the first inner side wall 14, the second inner side wall 15 and the third inner side wall 16 are all provided with flanges 26 connected to each other and extending toward the inside of the U-shaped inner frame 13, and the portion of the third outer side wall 20 between the first inner side wall 14 and the second inner side wall 15 is provided with a flange 26 extending toward the third inner side wall 16, and the two ends of the flange 26 on the third outer side wall 20 are respectively connected to the flange 26 on the first inner side wall 14 and the flange 26 on the second inner side wall 15.;

[0063] The double-wall structure is adopted, and the single wall is changed into two stacked walls. This design not only opens up two parallel first flow field improvement channels, but also improves the flow field by optimizing fluid dynamics, thus improving the flow performance of molten steel. In addition, by reducing the dead zone volume inside the flow stabilizer, it effectively promotes the floating of inclusions in the molten steel, while reducing the impact of the molten steel, further extending the service life of the tundish system.

[0064] The tops of the first inner wall 14 and the second outer wall 15 are gradually inclined from the third inner wall 16 to the third outer wall 20 , the tops of the first outer wall 31 and the second outer wall 32 are flush with the top of the first inner wall 21 , and the height of the third inner wall 16 is greater than the height of the third outer wall 20 .

[0065] Example 2

[0066] The long-life molten metal transmission system in this embodiment is different from that in Embodiment 1 in that: Figure 4 The twisted I-shaped shunt block shown in the figure (the twisted I-shaped shunt block is formed by rotating one of the horizontal sides of the I-shaped shunt block 90 degrees with one of the vertical sides of the I-shaped shunt block as the rotation axis), the two ends of the shunt block 10 are provided with protruding parts 101, the protruding parts 101 are perpendicular to the shunt block 10, and the protruding parts 101 at both ends are arranged perpendicular to each other. In some other embodiments, the protruding parts 101 at both ends of the shunt block 10 can also be parallel to each other. Of course, this embodiment can also adopt the following method: Fig.11 The I-shaped diverter block shown.

[0067] Example 3

[0068] The long-life molten metal transmission system in this embodiment is different from that in Embodiment 1 in that: Figure 5 As shown, the surface of the diverter block 10 is provided with convex portions 101 in a scattered manner in the spatial direction. As a special case, it is also possible to adopt Fig.12 The four-column radial diverter block shown (the four-column radial diverter block includes a central connecting block and four cylinders or frustums, one end of each cylinder or frustum is fixed to the central connecting block, and the other end is away from the central connecting block and extends in different directions).

[0069] Example 4

[0070] The long-life molten metal transmission system in this embodiment is different from that in Embodiment 1 in that: Figure 8 As shown, the shape of the diverter block 10 is a triangular pyramid, each corner of the diverter block 10 forms an outer protrusion 101, and each corner of the diverter block 10 is provided with a plane formed by cutting.

[0071] Example 5

[0072] The long-life molten metal transmission system in this embodiment is different from that in Embodiment 1 in that the diverter block can also be made of Figure 6 or Fig.14 The four-legged hollow column diverter block shown includes a plate-like body, four prisms or prisms fixed to one surface of the plate-like body, and four prisms fixed to the other surface of the plate-like body. The free end of each prism or prism extends in a direction away from the plate-like body, and a through hole penetrating the plate surface is opened in the center of the plate-like body.

[0073] Example 6

[0074] The long-life molten metal transmission system in this embodiment is different from that in Embodiment 1 in that the diverter block can also be made of Fig.15 The cut-corner and cut-edge pyramidal hole cubic diverter block shown in the figure is a cube with four corners cut off, the edges are cut off parallel to each edge, and a frustum hole is opened on each face, and the frustum holes on the opposite faces are fluid-conducting through the small head end, and the large head end of the frustum hole is on the surface of the cube.

[0075] Example 7

[0076] The long-life molten metal transmission system of the present embodiment is different from that of the first embodiment in that the diverter blocks are composed of twisted I-shaped diverter blocks, twisted W-shaped diverter blocks, four-column radial diverter blocks and cut-angle and cut-edge pyramid hole cubic diverter blocks in a number ratio of 3:5:2:1. Specifically, the cut-angle and cut-edge pyramid hole cubic diverter blocks are arranged in the bottom layer, and the twisted I-shaped diverter blocks, twisted W-shaped diverter blocks and four-column radial diverter blocks are mixed and placed in the upper layer; the twisted I-shaped diverter block is an I-shaped one of the horizontal parts rotating with one of the vertical parts of the I-shaped as the axis of rotation. The twisted Wang-shaped shunt block is formed by rotating the middle horizontal line of the Wang character 90 degrees with the vertical line of the Wang character as the axis of rotation; the four-column radial shunt block includes a central connecting block and four frustums, the large end of each frustum is fixed to the central connecting block, and the small end is away from the central connecting block and extends in different directions; the corner-cut and edge-cut pyramidal hole cubic shunt block is a cube with four corners cut off, the edges are cut off parallel to each edge, and a frustum hole is opened on each face, and the frustum holes on the opposite faces are fluid-conducting through the small end. The combination of the diverter blocks in this embodiment can not only achieve the purpose of "large impact and large diversion, small impact and fine diversion" for molten steel, but also prevent molten steel from splashing and effectively promote the floating of small-size inclusions; this is because: the twisted I-shaped diverter blocks, the twisted W-shaped diverter blocks and the four-column radial diverter blocks are mixed and placed on the upper layer, and the diverter channels formed between the diverter blocks have the characteristics of large cross-sectional area and high connectivity in all directions, so that the molten steel with a large impact force entering the flow stabilizer can be quickly "unloaded" to become molten steel with a smaller impact force. The molten steel with a smaller impact force flows downward to the cubic diverter block with cut-angle and cut-edge pyramid holes. The large head end of the frustum hole is located on the surface and the frustum hole on the opposite side is connected through the small head end fluid, so that the drainage and throttling of the molten steel can be achieved, thereby dispersing the molten steel with a smaller impact force into trickles.

[0077] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the claims of this patent application.

Claims

1. A long-life molten metal transmission system for a middle package, comprising a flow stabilizer (1) and a protection tube (2), wherein the outlet end of the protection tube (2) is arranged toward the molten steel inlet of the flow stabilizer (1), and the molten steel flows into the flow stabilizer (1) through the protection tube (2), characterized in that: A diverter layer (3) is arranged in the flow stabilizer (1), and a diverter channel (4) is arranged in the diverter layer (3). One end of the diverter channel (4) is arranged to face the impact direction of the molten steel, and the other end of the diverter channel (4) passes through the diverter layer (3) and is fluidly connected with the internal space of the flow stabilizer (1). After the steel flow impacts the diverter layer (3), it enters the diverter channel (4) and is dispersed into multiple steel flows.

2. A long-life tundish molten metal transmission system according to claim 1, characterized in that: The diversion channel (4) comprises a vertical channel (5) arranged along the height direction of the diversion layer (3), one end of the vertical channel (5) faces the impact direction of the molten steel, and the other end of the vertical channel (5) extends toward the bottom of the flow stabilizer (1) and is in fluid communication with the internal space of the flow stabilizer (1); Alternatively, the diverter channel (4) comprises a vertical channel (5) arranged along the height direction of the diverter layer (3), one end of the vertical channel (5) faces the impact direction of the molten steel, and the other end of the vertical channel (5) extends toward the bottom of the flow stabilizer (1) and is fluidically connected to the internal space of the flow stabilizer (1); and the diverter channel (4) further comprises a horizontal channel (6) arranged along the length and / or width direction of the diverter layer (3), the horizontal channel (6) is fluidically connected to the vertical channel (5), and at least one end of the horizontal channel (6) passes through the diverter layer (3) and is fluidically connected to the internal space of the flow stabilizer (1); Or the diversion channel (4) comprises a curved channel, one end of which faces the impact direction of the molten steel, and the other end of which is in fluid communication with the internal space of the flow stabilizer (1); The diversion layer (3) is a single body, and the diversion channel (4) is located inside the single body; Alternatively, the flow-dividing layer (3) is composed of a plurality of monomers, and the flow-dividing channel (4) includes gaps formed between adjacent monomers and / or fluid channels formed inside the monomers.

3. A long-life tundish molten metal transmission system according to any one of claims 1-2, characterized in that: The flow dividing layer (3) comprises two or more mutually cooperating flow dividing blocks (10), wherein the flow dividing blocks (10) are arranged on the inner bottom wall of the flow stabilizer (1); the surface of the flow dividing block (10) has an outwardly extending convex portion (101), two adjacent flow dividing blocks (10) are connected to each other via the convex portion (101), and a gap formed by the support of the two adjacent flow dividing blocks (10) via the convex portion (101) is the flow dividing channel (4); Alternatively, the flow dividing layer (3) comprises two or more flow dividing blocks (10) that cooperate with each other, wherein the flow dividing blocks (10) are arranged on the inner bottom wall of the flow stabilizer (1); the surface of the flow dividing block (10) has an outwardly extending outer protrusion (101), and the gap formed between two adjacent flow dividing blocks (10) is the flow dividing channel (4); The diverter block (10) is an I-shaped diverter block, a twisted I-shaped diverter block, a W-shaped diverter block, a twisted W-shaped diverter block, a four-column radial diverter block, a four-legged hollow column diverter block, a cut-angle cut-edge pyramid hole cubic diverter block, a truncated cone-shaped diverter block, a conical diverter block, a prism-shaped diverter block or a pyramid-shaped diverter block or any combination thereof; the twisted I-shaped diverter block is formed by rotating one of the horizontal lines of the I-shaped diverter with one of the vertical lines of the I-shaped diverter as a rotation axis at an angle greater than 0 degrees and less than or equal to 90 degrees; the twisted W-shaped diverter block is formed by rotating the middle horizontal line of the W-shaped diverter with one of the vertical lines of the W-shaped diverter as a rotation axis at an angle greater than 0 degrees and less than or equal to 90 degrees; the four-column radial diverter block includes a central connecting block and four cylinders or frustums, one end of each cylinder or frustum is fixed to the central connecting block, and the other end is away from the central connecting block and extends in different directions; the four-legged hollow column diverter block includes a plate-like body, four prisms or prisms fixed to one plate surface of the plate-like body, and four prisms fixed to another plate surface of the plate-like body, the free end of each prism or prism extends in a direction away from the plate-like body, and a through hole penetrating the plate surface is opened in the center of the plate-like body; the corner-cut and edge-cut pyramidal hole cubic diverter block is a cube with four corners cut off, the edges are cut off respectively and parallel to each edge, and a frustum hole is opened on each face, and the frustum holes on the opposite faces are fluid-conducting through the small head end.

4. A long-life tundish molten metal transmission system according to claim 3, characterized in that: The inner bottom wall of the flow stabilizer (1) is provided with a reinforced impact plate (7), and the diverter block (10) is provided on the surface of the reinforced impact plate (7); the diverter block (10) is diffusely distributed on the inner bottom wall of the flow stabilizer (1) with the reinforced impact plate (7) as the center; and there is a gap between the diverter block (10) located at the outermost side and the inner vertical wall surface of the flow stabilizer (1).

5. A long-life tundish molten metal transmission system according to claim 4, characterized in that: The reinforced impact plate (7) is an impregnation reinforced impact plate, a vacuum impregnation reinforced impact plate, a vacuum impregnation reinforced impact plate, and a heat treatment and vacuum impregnation reinforced impact plate, and a pressure strengthened impact plate; the inorganic impregnation is carried out by inorganic impregnation or organic impregnation, and the inorganic impregnation uses alumina sol, chromium oxide sol, zirconium oxide sol, spinel sol, silicon oxide sol, or a composite inorganic sol of two or more of the above; the composite inorganic sol is preferably alumina-chromium oxide composite sol, chromium oxide- Zirconia composite sol or magnesium aluminum spinel sol, the mass ratio of chromium oxide to zirconium oxide in the chromium oxide-zirconia composite sol is (1-2): (2-4); the strengthening impact plate is impregnated with the alumina-chromium oxide composite sol, and the chromium oxide and the alumina are infinitely dissolved at high temperature to form spinel chromium corundum; the organic matter is impregnated with one or two or more of asphalt, tar, anthracene oil or resin, and the resin is epoxy resin or phenolic resin; the strengthening impact plate (7) is manufactured by using a floating workbench; When preparing the reinforced impact plate (7) and / or the diverter block (10), toughening nano powder is added to strengthen its microstructure. The amount of toughening nano powder used is 0-3% of the mass of the reinforced impact plate (7) and / or the diverter block (10). The particle size of the toughening nano powder is less than or equal to 100 nanometers. The toughening nano powder is selected from magnesium oxide powder, α-alumina powder, zirconium dioxide powder or silicon dioxide powder. The particle size of the α-alumina powder is greater than 0 and less than or equal to 30 nanometers, so that the toughness of the reinforced impact plate (7) and the diverter block (10) is increased by more than 40%.

6. A long-life molten metal transmission system according to any one of claims 1-2, characterized in that: A protrusion (11) is provided on the inner vertical wall of the flow stabilizer (1); at least one side wall steel outlet (9) is provided on the side wall of the protection tube (2), and 0 to 3 bottom steel outlets are provided on the bottom of the protection tube (2); the total number of the side wall steel outlets (9) and the bottom steel outlets is greater than or equal to 2, and the equivalent circular diameter of the total area of ​​the side wall steel outlets (9) and the bottom steel outlets is 20 to 400 mm.

7. A long-life molten metal transmission system according to any one of claims 1 to 3, characterized in that: An edge diversion layer (8) is provided on the inner bottom wall of the flow stabilizer (1) at a position close to the inner vertical wall. In the direction from the outer side of the flow stabilizer (1) to the center of the flow stabilizer (1), the thickness of the edge diversion layer (8) gradually decreases, and the slope ratio of the edge diversion layer (8) is less than 1:1.

25.

8. A long-life molten metal transmission system according to claim 7, characterized in that: The edge splitter layer (8) comprises more than two central fixing plates (81) and support columns (82); the four corners of the central fixing plate (81) are vertically fixedly connected with support columns (82); a through hole (83) is provided at the center of the central fixing plate (81); a groove (84) is provided on the side wall of the central fixing plate (81) between two adjacent support columns (82); the support columns (82) on two adjacent central fixing plates (81) are fitted and connected to each other, and the direction of the support columns (82) intersects with the bottom wall of the flow stabilizer (1).

9. A long-life molten metal transmission system according to claim 1, characterized in that: The flow stabilizer (1) comprises a bottom plate (12), a U-shaped inner frame (13) and a U-shaped outer frame (17); the U-shaped inner frame (13) and the U-shaped outer frame (17) are both arranged on the bottom plate (12); one end of the U-shaped inner frame (13) has a first opening (21); one end of the U-shaped outer frame (17) has a second opening (22); the end of the U-shaped inner frame (13) having the first opening (21) is inserted into the U-shaped outer frame (17) through the second opening (22); A first steel flow channel (23) is formed between the side wall of the U-shaped outer frame (17) and the side wall of the U-shaped inner frame (13); a steel flow hole (24) is provided on the side wall of the U-shaped inner frame (13); the steel flow hole (24) is fluidly connected to the first steel flow channel (23); a second steel flow channel (25) is provided between one end of the U-shaped inner frame (13) having a first opening (21) and the vertical surface of the U-shaped outer frame (17); the second steel flow channel (25) is fluidly connected to the first steel flow channel (23).

10. A long-life molten metal transmission system according to claim 9, characterized in that: The U-shaped inner frame (13) comprises a first inner side wall (14), a second inner side wall (15) and a third inner side wall (16), wherein the first inner side wall (14) and the second inner side wall (15) are two opposite side walls, and the third inner side wall (16) is sealed to the first end of the first inner side wall (14) and the first end of the second inner side wall (15), respectively, and the first opening (21) is located between the second end of the first inner side wall (14) and the second end of the second inner side wall (15); the U-shaped outer frame (17) comprises a first outer side wall (18), a second outer side wall (19) and a third outer side wall (16). The first outer wall (18) and the second outer wall (19) are two opposite side walls, the third outer wall (20) is sealedly connected to the first end of the first outer wall (18) and the first end of the second outer wall (19), respectively, and the second opening (22) is located between the second end of the first outer wall (18) and the second end of the second outer wall (19); the first flow steel channel (23) is formed between the first inner wall (14) and the first outer wall (18) and / or between the second inner wall (15) and the second outer wall (19), and the first The inner wall (14) and / or the second inner wall (15) are provided with the steel flow hole (24); on a plane perpendicular to the direction of molten steel flowing in the first steel flow channel (23), the angle between the axis of the steel flow hole (24) and the horizontal line is 15 to 25 degrees; on a top view plane passing through the steel flow hole (24), the axis of the steel flow hole (24) is perpendicular to the direction of molten steel flowing in the first steel flow channel (23); the second end of the second inner wall (15) and / or the second end of the first inner wall (14) and the third outer wall (20) have the second steel flow channel (25). ); the tops of the first inner side wall (14), the second inner side wall (15) and the third inner side wall (16) are all provided with convex edges (26) which are connected to each other and extend inwardly of the U-shaped inner frame (13); the portion of the third outer side wall (20) located between the first inner side wall (14) and the second inner side wall (15) is provided with a convex edge (26) which extends in the direction of the third inner side wall (16); the two ends of the convex edge (26) on the third outer side wall (20) are respectively connected to the convex edge (26) on the first inner side wall (14) and the convex edge (26) on the second inner side wall (15).

11. The long-life tundish molten metal transmission system according to claim 3, characterized in that: The diverter block (10) is an impregnation-strengthened diverter block, a vacuum-impregnated-strengthened diverter block, a vacuum-impregnated and then pressurized-strengthened diverter block, or a heat-treated and then vacuum-impregnated and then pressurized-strengthened diverter block; inorganic impregnation or organic impregnation is used, and the inorganic impregnation uses alumina sol, chromium oxide sol, zirconium oxide sol, spinel sol, silicon oxide sol, or a composite inorganic sol of two or more of the above; preferably, the composite inorganic sol is alumina-chromium oxide composite sol, chromium oxide-oxygen composite sol, or alumina-chromium oxide composite sol. The invention discloses a zirconium oxide composite sol or magnesium aluminum spinel sol, wherein the mass ratio of chromium oxide to zirconium oxide in the chromium oxide-zirconium oxide composite sol is (1-2): (2-4); after the strengthening impact plate is impregnated with the alumina-chromium oxide composite sol, chromium oxide and alumina are infinitely dissolved at high temperature to form spinel chrome corundum; the organic matter impregnation uses one or two or more of asphalt, tar, anthracene oil or resin, and the resin is epoxy resin or phenolic resin; the strengthening diverter block (10) is manufactured by adopting a floating workbench.

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