Tundish for discontinuous steelmaking production and production process
By optimizing the structure and process of the tundish, the problem of resource waste when the tundish has not reached its service life in discontinuous steelmaking production has been solved, realizing the secondary use of the tundish and cost reduction.
Patent Information
- Application Number
- CN202411144592.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-20
- Publication Date
- 2026-03-03
AI Technical Summary
In discontinuous steelmaking production, the working lining needs to be replaced before the tundish reaches its service life, leading to increased costs and waste of resources.
Design a tundish for discontinuous steelmaking production, including a shell, a permanent liner and a working liner. The working liner gradually decreases in size along a certain direction. The inlet of the drain channel is close to the inner wall of the receiving cavity. Combined with specific production process steps, it facilitates the discharge of molten steel, avoids solidification, and realizes the secondary use of the tundish.
By optimizing the structure and process of the tundish, the secondary use of the tundish was realized, reducing the cost of refractory materials by 50% and resource waste, and reducing production waste.
Smart Images
Figure CN121589276A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of steelmaking technology, and in particular to a tundish and production process for discontinuous steelmaking. Background Technology
[0002] The tundish is a refractory container used in the steelmaking process. It is mainly used to receive molten steel poured from the ladle and distribute it to various crystallizers through the nozzle. It has the functions of reducing the static pressure of molten steel, stabilizing the flow, removing inclusions, storing and diverting molten steel, and is crucial to improving the quality of steel and the efficiency of the continuous casting process.
[0003] In related technologies, in short-process steelmaking production in steel mills, electric arc furnace steelmaking avoids shutdowns during peak electricity consumption periods to reduce costs. The discontinuous production process results in significant waste of refractory materials for continuous casting tundishes. Refractory materials that could be continuously produced for 36 or even 48 hours or more are shut down after only a dozen hours of continuous production due to the discontinuous nature of the process.
[0004] After the tundish comes off the production line, steel mills usually discard the tundish working lining, replace the tundish nozzle seat bricks and the top nozzle, and remake the tundish working lining, which increases costs and wastes resources. Summary of the Invention
[0005] Therefore, it is necessary to provide a tundish and production process for discontinuous steelmaking production to address the problem that tundishes that have not reached their service life need to be replaced and new working liners need to be made when they are reused, which leads to increased costs and waste of resources.
[0006] In a first aspect, this application provides a tundish for discontinuous steelmaking production, employing the following technical solution:
[0007] A tundish for discontinuous steelmaking includes a shell, a permanent liner, a working liner, and a draining device. The shell includes a receiving cavity. The permanent liner is disposed within the receiving cavity and adheres to the inner wall of the receiving cavity. The working liner is disposed within the receiving cavity and adheres to the inner wall of the permanent liner. Along a first direction, the dimensions of the working liner gradually decrease in a second direction, which is perpendicular to the first direction. The draining device passes between the permanent liner and the working liner and has a built-in draining channel. The draining channel connects the receiving cavity to the outside. In the second direction, the inlet of the draining channel is closer to the inner wall of the receiving cavity than the inner wall of the working liner.
[0008] In one embodiment, the working liner includes a main body and a heightening portion, the heightening portion being connected to the side of the main body away from the permanent liner, and the size of the heightening portion gradually decreasing in the second direction along the first direction.
[0009] In one embodiment, the intermediate liner further includes an impact portion embedded between the permanent liner and the working liner, the impact portion including an impact body and a thickening layer connected to the impact body, wherein, in the second direction, the impact body is closer to the inner wall of the receiving cavity than the thickening layer.
[0010] In one embodiment, the draining component includes an inlet portion and a draining portion, the inlet portion being fitted between the permanent liner and the working liner, and the draining portion being connected to the inlet portion and extending out of the receiving cavity.
[0011] In one embodiment, the intermediate liner further includes a nozzle base embedded between the permanent liner and the working liner, the nozzle base surrounding the outside of the drain element.
[0012] In one embodiment, the intermediate package further includes a plug detachably mounted to the drain component, the plug including an insertion portion and an extension connected to the insertion portion, the insertion portion being capable of being inserted into the drain channel.
[0013] In one embodiment, after the plug is inserted into the drainage channel, in the second direction, the inlet of the drainage channel is closer to the inner wall of the receiving cavity than the plug.
[0014] Secondly, this application provides a production process for an intermediate ladle that utilizes the above-mentioned discontinuous steelmaking production, comprising the following steps:
[0015] Create a middleware package and deploy it online;
[0016] When the molten steel has finished flowing and slag begins to flow, the draining channel is blocked with a plug.
[0017] Inspect the cooled intermediate tundish and open the drain channel;
[0018] Preparations for going live again.
[0019] In one embodiment, the steps of creating and deploying the intermediate package include:
[0020] Fabricate the main body and wrap it around the outer wall of the drainage component;
[0021] A thickened layer with a dimension of at least 150 mm is added to the impact body in the second direction;
[0022] An extension section with a dimension of at least 80 mm is added to the main body in a second direction.
[0023] In one embodiment, the step of overhauling the cooled tundish and opening the drain channel includes:
[0024] Inspect the working lining and repair any cracked areas;
[0025] Remove the plug from the drainage channel;
[0026] Clean and inspect the drainage components;
[0027] Open the drainage channel.
[0028] The aforementioned tundish for discontinuous steelmaking production, by setting the dimensions of the working liner in the second direction to gradually decrease along the first direction, and setting the inlet of the drain channel to be closer to the inner wall of the receiving cavity than the inner wall of the working liner, allows the molten steel to flow out through the drain channel as much as possible after being injected into the receiving cavity, thereby preventing the molten steel from remaining and solidifying in the receiving cavity and blocking the drain channel, so as to facilitate the secondary use of the tundish. Attached Figure Description
[0029] Figure 1 This is a schematic diagram of the intermediate package involved in the related technology.
[0030] Figure 2 This is a schematic diagram of an intermediate package in one embodiment of this application.
[0031] Figure 3 This is a schematic diagram of the intermediate tundish after its first online casting in one embodiment of this application.
[0032] Figure 4 This is a schematic diagram of a plug in one embodiment of this application.
[0033] Attached image annotations:
[0034] 1. Shell; 11. Receiving cavity; 2. Permanent liner; 3. Working liner; 31. Main body; 32. Heightening section; 4. Drainage component; 41. Inlet section; 42. Drainage section; 5. Impact section; 51. Impact body; 52. Thickening layer; 6. Sprue base; 7. Plug; 71. Insertion section; 72. Extension section; 8. Drainage channel; 9. Steel slag; F1. First direction; F2. Second direction. Detailed Implementation
[0035] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.
[0036] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.
[0037] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0038] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0039] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0040] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intermediate element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intermediate element present. Wherein, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation. Wherein, "first direction" can be the width direction of the intermediate package, and "second direction" can be the height direction of the intermediate package.
[0041] The following is in conjunction with the appendix Figure 1-4 The embodiments of this application will be described in further detail.
[0042] In short-process steelmaking, electric arc furnaces avoid shutting down during peak electricity consumption periods to reduce costs. This discontinuous production model results in significant waste of refractory materials for continuous casting tundishes. Refractory materials that could be continuously produced for 36 or 48 hours or more are shut down after only a dozen hours of continuous production due to the discontinuous nature of the process.
[0043] See Figure 1 , Figure 1 A schematic diagram of an intermediate package involved in the related art is shown. In the related art, the actual construction of the intermediate package includes the following steps:
[0044] (1) Install the sprue seat bricks. Install the sprue seat bricks according to the positioning stop, and use intermediate ramming material to make protective brick material around the sprue seat bricks;
[0045] (2) Install the tundish impact plate. The impact plate must be installed centered on the impact position of the ladle nozzle and must not deviate from the center position by more than 50mm;
[0046] (3) Tackling the bottom of the tundish working liner 3. The bottom material of the tundish working liner 3 is introduced and compacted using a tamping device. Using the upper surface of the nozzle seat brick and the impact plate as a reference, the excess dry material of the working liner 3 is scraped and removed, and then tamped flat. Specifically, the dry material of the working liner 3 should not be lower than the reference surface of the tundish bottom to prevent damage to the nozzle seat brick and impact plate during tundish jig vibration, and to further compact the bottom of the tundish. A small amount of water can be sprayed before tamping to improve the tamping effect and enhance the smoothness of the inner wall of the working liner 3.
[0047] (4) Place the tundish jig (a jig with a complete steel shell at the bottom) into the tundish working liner 3 pack wall material for forming. When placing the tundish jig, it must be placed strictly within the limit pin and must not be offset. Fill the outer perimeter of the tundish jig with the tundish working liner 3 pack wall material and vibrate to compact it.
[0048] (5) Bake and shape, remove from the mold, and complete the production of intermediate bun working liner 3.
[0049] After the tundish with the above-mentioned structural design is taken off the production line after a period of use, the molten steel inside is difficult to completely drain. After cooling, it solidifies into cold steel, which is difficult to clean. Therefore, even if the tundish has not reached the end of its service life, after it is taken off the production line, each steel plant will discard the tundish working liner 3, replace the tundish nozzle seat bricks and the upper nozzle, and remake the tundish working liner 3, which will increase costs and waste resources.
[0050] Therefore, this application addresses the problem in related technologies that when tundishes that have not reached their service life are reused, it is necessary to replace and manufacture new working liners 3, which leads to increased costs and waste of resources. This application provides a new tundish and production process for discontinuous steelmaking production.
[0051] Combination Figure 2 As shown, Figure 2 The diagram shows a schematic of an tundish in one embodiment of this application. In some embodiments, the tundish includes a shell 1, and a receiving cavity 11 for holding molten steel is formed inside the shell 1. A permanent liner 2 and a working liner 3 are sequentially laid in the receiving cavity 11. Along the first direction F1, the dimensions of the working liner 3 gradually decrease in the second direction F2, that is, the thickness of the working liner 3 gradually decreases along the first direction F1, forming a guide surface.
[0052] Specifically, along the first direction F1, the receiving cavity 11 is sequentially provided with an impact part 5 and a draining part 4. The impact part 5 is embedded between the permanent liner 2 and the working liner 3, and its top surface is flush with the inner wall of the working liner 3, for receiving molten steel poured into the tundish. The draining part 4 passes through the permanent liner 2 and the working liner 3 and has a built-in draining channel 8, which connects the receiving cavity 11 to the outside to drain the molten steel in the tundish.
[0053] In this embodiment, the impact part 5 must be installed centered at the impact position of the ladle nozzle and must not deviate from the center by more than 50mm to ensure the safety of the impact zone after the molten steel has drained completely during the first use and during the second use. In the second direction F2, the inlet of the drain channel 8 is closer to the inner wall of the receiving cavity 11 than the inner wall of the working liner 3, so that the inlet of the drain channel 8 can connect to the lowest point of the inner wall of the working liner 3 to smoothly drain the molten steel in the receiving cavity 11.
[0054] Continue reading Figure 2As shown, the working liner 3 includes a main body 31 and an extension portion 32 added above the main body 31. Along the first direction F1, the size of the extension portion 32 gradually decreases in the second direction F2. In this embodiment, the main body 31 can be manufactured using the same method as the intermediate ladle working liner 3 in the related art. By adding the extension portion 32 to the main body 31 and configuring the extension portion 32 to gradually decrease in height along the first direction F1, the aforementioned guide surface can be formed at the bottom of the receiving cavity 11 to ensure the smooth discharge of molten steel and avoid the situation where molten steel accumulates in the receiving cavity 11 or even solidifies into cold steel that is difficult to remove.
[0055] The impact section 5 includes an impact body 51 and a thickened layer 52 connected to the impact body 51. In the second direction F2, the impact body 51 is closer to the inner wall of the receiving cavity 11 than the thickened layer 52, in order to improve the corrosion resistance of the impact section 5. This ensures that the impact section 5 is always higher than the inlet of the drain channel 8, which is beneficial for the complete flow of molten steel. The impact body 51 can be an impact plate in related technologies.
[0056] In this embodiment, the draining component 4 includes an inlet portion 41 and a draining portion 42 arranged sequentially along the second direction F2, and the inlet portion 41 and the draining portion 42 together form the aforementioned draining channel 8. The inlet portion 41 is embedded between the permanent liner 2 and the working liner 3, and the draining portion 42 is connected to the inlet portion 41 and extends out of the receiving cavity 11 to form a water outlet.
[0057] In some other embodiments, the intermediate liner also includes a nozzle base 6, which surrounds the drain element 4. See also... Figure 2 As shown, the nozzle base 6 is specifically arranged around the liquid inlet section 41 and embedded between the permanent liner 2 and the working liner 3, thereby effectively preventing the nozzle base 6 from cracking due to the cooling of the tundish after the first use.
[0058] Combination Figure 3 and Figure 4 As shown, Figure 3 This diagram illustrates the first casting of the tundish in one embodiment of this application. Figure 4 A schematic diagram of a plug in one embodiment of this application is shown. In some embodiments, the intermediate liner further includes a plug 7 for sealing the drainage channel 8. The plug 7 includes an insertion portion 71 and an extension portion 72 connected to the insertion portion 71. Both the insertion portion 71 and the extension portion 72 can be made of reinforcing steel. In this embodiment, the insertion portion 71 can specifically be made of Q235 steel (carbon structural steel), and the extension portion 72 can specifically be made of threaded reinforcing steel. The two can be connected by welding.
[0059] Specifically, after the first online casting of the tundish, the raised part 32 of the working liner 3 and the raised layer of the impact part 5 will be eroded to varying degrees. When the operator starts to flow the slag 9 after the molten steel in the tundish has flowed out, the operator inserts the insertion part 71 of the plug 7 into the drain channel 8 along the second direction F2 to achieve the fitting and sealing of the drain channel 8.
[0060] In this embodiment, after the plug 7 is inserted into the drain channel 8, in the second direction F2, the inlet of the drain channel 8 is closer to the inner wall of the receiving cavity 11 than the insertion part 71 of the plug 7. That is, the insertion part 71 can pass through the permanent liner 2 and the working liner 3 in sequence along the second direction F2 and extend into the receiving cavity 11, so that the operator can quickly locate the position of the plug 7 after the steel slag 9 solidifies.
[0061] Furthermore, in this application, the insertion portion 71 of the plug 7 ensures that the slag 9 in the middle of the plug does not flow down, and the length of the plug 7 is increased so that the plug 7 is exposed above the surface of the slag 9, which facilitates the opening of the drainage channel. At the same time, no molten steel remains in the receiving cavity 11, and the contact surface of the plug 7 is only the slag 9, which does not damage the plug 7, allowing the plug 7 to be reused multiple times, which helps to further reduce production costs.
[0062] Combination Figures 1 to 4 As shown, in some embodiments, this application also provides a production process for an intermediate ladle used in discontinuous steelmaking production as shown in any of the above embodiments, the production process specifically including the following steps:
[0063] S1: Create a middleware package and deploy it online.
[0064] S2: When the molten steel has finished flowing and the slag begins to flow, the drain channel 8 is blocked with the plug 7.
[0065] S3: Inspect the cooled intermediate tundish and open the drain channel 8.
[0066] S4: Preparations for going live again.
[0067] Specifically, step S1 includes the following steps:
[0068] S11: Fabricate the main body 31 and wrap the outer wall of the drainage component 4;
[0069] S12: A thickened layer 52 with a dimension of at least 150 mm is added to the impact body 51 in the second direction F2;
[0070] S13: An extension portion 32 with a dimension of at least 80 mm is added to the main body portion 31 in the second direction F2.
[0071] Step S3 specifically includes the following steps:
[0072] S31: Inspect working lining 3 and repair any cracked areas;
[0073] S32: Remove plug 7 from drainage channel 8;
[0074] S33: Clean and inspect drain fitting 4;
[0075] S34: Open drainage channel 8.
[0076] Specifically, in step S11, the drain component 4 and the nozzle base 6 are wrapped between the working liner 3 and the permanent liner 2, which effectively prevents the seat brick and the upper nozzle of the nozzle base 6 from cracking due to the cooling of the tundish after the first use, so that the drain component 4 and the nozzle base 6 can still be used normally when used for the second time.
[0077] It is understandable that, without increasing the thickness of the tundish bottom, the tundish nozzle base 6 area will be higher than other bottom areas after it is put into use because the impact and corrosion resistance of the tundish nozzle base 6 and the upper nozzle are better than that of the working lining 3. This will result in the molten steel not being able to flow out completely.
[0078] Therefore, in step S12, a thickening layer 52 is added to the impact body 51 after normal construction, and the thickening layer 52 is set to be at least 150mm, which helps to increase the thickness of the ladle bottom to facilitate the discharge and complete flow of molten steel. Furthermore, in step S13, a heightening portion 32 with a thickness of at least 80mm is added to the main body 31 of the working liner 3 after normal construction to increase the corrosion resistance of the working liner 3, so that the working liner 3 can withstand the corrosion of molten steel used in the next operation.
[0079] In step S2, when continuous casting production stops, the draining channel 8 of the draining component 4 is sealed with the plug 7 after ensuring that the molten steel in the tundish has completely drained and slag begins to flow. This process requires operability in continuous casting production. After the tundish is cooled, there is a certain amount of slag remaining at the bottom, and a thin layer of slag adheres to the ladle wall. Because the tundish has already undergone one casting, the refractory material of the working lining 3 has a certain thickness of sintered layer, which will generate shrinkage cracks during cooling. Therefore, the basis for the secondary use of the tundish is to ensure that the molten steel has completely drained while retaining a certain thickness of slag 9 after casting.
[0080] In this embodiment, firstly, the molten steel should be completely drained to ensure that there is no shrinkage of the cooled molten steel during tundish cooling, thus preventing damage to the bottom of the tundish. Secondly, the complete draining of the molten steel ensures that the nozzle orifice of the nozzle base 6 can be reconnected without damage. Finally, leaving a certain thickness of slag 9 helps to slow down the temperature drop of the nozzle seat bricks and upper nozzle of the nozzle base 6, preventing cracking of the nozzle seat bricks and upper nozzle due to rapid cooling, which would damage the nozzle seat bricks and upper nozzle and affect secondary use.
[0081] In step S31, after the tundish has cooled to about 50°C, the operator enters the tundish when it is accessible. The operator inspects the working liner 3 of the tundish and repairs any cracks in the working liner 3 using a finer piece of the tundish working liner 3 material.
[0082] In step S32, the upper end of the plug 7 exposed on the surface of the steel slag 9 is located in the intermediate ladle, and the upper end of the plug 7 is gently tapped downward with a hammer to make the plug 7 exit the drainage channel.
[0083] In step S33, use a steel rod to clean the sprue seat bricks of the sprue base 6 and the steel slag 9 on the upper end face of the sprue. Check whether the sprue and sprue seat bricks are damaged. If they are damaged, replace them. If they are not damaged, continue to use them.
[0084] In step S34, steel slag 9 is cleaned from the drainage channel with a steel rod to ensure that the drainage channel is unobstructed.
[0085] In step S4, the intermediate packages that are determined to be ready for re-entry after inspection in step S3 are replaced with blind flanges and injected with diversion sand. Other preparatory processes for re-entry are completed, and then the packages are sent to the online baking station for pre-use baking, so that they can be put back into production.
[0086] This application aims to reuse tundishes that have not reached their service life without increasing costs and materials. This solution can reduce the cost of refractory materials for tundishes used in this type of production by 50% and reduce resource waste.
[0087] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0088] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.
Claims
1. A tundish for discontinuous steelmaking production, characterized in that, The intermediate package includes: The housing includes a receiving cavity; A permanent liner is disposed within the receiving cavity and conforms to the inner wall of the receiving cavity; A working liner, disposed within the receiving cavity and conforming to the inner wall of the permanent liner, wherein the dimensions of the working liner gradually decrease along a first direction, and the second direction is perpendicular to the first direction; and A draining component is disposed between the permanent liner and the working liner and has a built-in draining channel. The draining channel is used to connect the receiving cavity to the outside. In the second direction, the inlet of the draining channel is closer to the inner wall of the receiving cavity than the inner wall of the working liner.
2. The tundish for discontinuous steelmaking production according to claim 1, characterized in that, The working liner includes a main body and a heightening section. The heightening section is connected to the side of the main body away from the permanent liner. Along the first direction, the size of the heightening section gradually decreases in the second direction.
3. The tundish for discontinuous steelmaking production according to claim 1, characterized in that, The intermediate liner also includes an impact portion embedded between the permanent liner and the working liner. The impact portion includes an impact body and a thickening layer connected to the impact body. In the second direction, the impact body is closer to the inner wall of the receiving cavity than the thickening layer.
4. The tundish for discontinuous steelmaking production according to claim 1, characterized in that, The draining component includes a draining part and a draining part. The draining part is fitted between the permanent liner and the working liner, and the draining part is connected to the draining part and extends out of the receiving cavity.
5. The tundish for discontinuous steelmaking production according to claim 1, characterized in that, The intermediate liner also includes a nozzle base embedded between the permanent liner and the working liner, the nozzle base surrounding the outside of the drain element.
6. The tundish for discontinuous steelmaking production according to claim 1, characterized in that, The intermediate package also includes a plug detachably mounted on the drain component, the plug including an insertion portion and an extension portion connected to the insertion portion, the insertion portion being capable of being inserted into the drain channel.
7. The tundish for discontinuous steelmaking production according to claim 6, characterized in that, After the plug is inserted into the drainage channel, in the second direction, the inlet of the drainage channel is closer to the inner wall of the receiving cavity than the plug.
8. A production process using an intermediate ladle as described in any one of claims 1-7 for discontinuous steelmaking, characterized in that, The production process includes: Create a middleware package and deploy it online; When the molten steel has finished flowing and slag begins to flow, the draining channel is blocked with a plug. Inspect the cooled intermediate tundish and open the drain channel; Preparations for going live again.
9. The production process according to claim 8, characterized in that, The steps for creating and deploying the intermediate package include: Fabricate the main body and wrap it around the outer wall of the drainage component; A thickened layer with a dimension of at least 150 mm is added to the impact body in the second direction; An extension section with a dimension of at least 80 mm is added to the main body in a second direction.
10. The production process according to claim 8, characterized in that, The steps of overhauling and cooling the intermediate tundish and opening the drainage channel include: Inspect the working lining and repair any cracked areas; Remove the plug from the drainage channel; Clean and inspect the drainage components; Open the drainage channel.