Induction tundish and casting construction method based on induction tundish

Abstract

The invention relates to the field of tundishes, in particular to an induction tundish and a casting construction method based on the induction tundish. The tundish main body comprises a steel bearing chamber, a middle partition wall and a casting chamber; a flow steel structure is arranged on the middle partition wall; the steel flowing structure comprises a steel flowing pipeline arranged on the middle partition wall, and a steel flowing channel is arranged on the steel flowing pipeline. The steel bearing chamber is communicated with the casting chamber through the steel flowing channel; the middle partition wall is further provided with an air blowing structure, and the air blowing structure is used for supplying air into the steel flowing channel. Through the arrangement of the blowing structure, protective gas is introduced into the steel flowing channel before casting production, a protective gas film is formed on the inner wall of the steel flowing channel in advance, and bonding of cold steel is prevented; in addition, a stable blowing flow is kept in the casting process, after casting is finished, under the action of argon bubbles, remaining steel in the steel flowing channel can completely flow into a casting chamber, and it is guaranteed that the inner wall of the steel flowing channel is clean.

Description

Technical Field

[0001] The invention relates to the field of tundishes, in particular to an induction tundish and a casting construction method based on the induction tundish. Background Art

[0002] With the development of metallurgical casting technology, controlling the temperature of molten steel in the tundish and constant temperature casting with low superheat play an important role in improving the quality of ingots. Therefore, during the casting process, a complete set of heating devices with complete functions must be available to compensate for the temperature drop of molten steel in the tundish by an external heat source. Accurately controlling the temperature of molten steel in the tundish has become a key factor affecting the quality of castings, and the tundish induction heating device came into being.

[0003] However, the on-site operating environment of the tundish is harsh and the installation space of the thermal device is limited. In order to eliminate the heating of the tundish shell due to electromagnetic induction, the current induction heating device is mainly installed between the tundish steel chamber and the casting chamber, and effectively compensates the temperature of the molten steel in the tundish casting chamber by heating the molten steel flowing through the steel flow channel.

[0004] The refractory materials around the induction heating device are relatively complex and need to be knotted together with the permanent layer of the insulating refractory material tundish. The flow steel channel of the tundish needs to be installed synchronously with the permanent layer of the tundish to achieve subsequent multiple uses.

[0005] After the casting of the tundish is completed, the slag in the channel can easily cause the steel flow channel to be blocked, affecting subsequent use.

[0006] The existing patent; 202121675725.2 - A steel flow channel for an electromagnetic induction heating tundish does not clearly disclose the technical content for solving the above-mentioned technical problems.

[0007] Therefore, in order to improve or solve at least one of the above problems, the existing induction tundish needs to be optimized in design. Summary of the invention

[0008] The object of the present invention is to provide an induction tundish which can reduce the blockage of a steel flow channel.

[0009] In order to achieve the above object, the technical solution adopted by the present invention is:

[0010] An induction tundish, comprising a tundish body; the tundish body comprises a steel-bearing chamber, a middle partition wall and a casting chamber; the steel-bearing chamber and the casting chamber are connected via the middle partition wall;

[0011] The middle partition wall is provided with a flow steel structure; the bearing steel chamber is connected with the casting chamber through the flow steel structure;

[0012] The flow steel structure comprises a flow steel pipeline arranged on the middle partition wall, and a flow steel channel is arranged on the flow steel pipeline;

[0013] The steel bearing chamber is connected with the casting chamber through a steel flow channel;

[0014] The middle partition wall is also provided with an air blowing structure, which is used to supply air into the steel flow channel.

[0015] The middle partition wall is provided with a laying channel for arranging flow steel pipes; the inner wall of the laying channel is provided with a diffusion ring groove; the length of the diffusion ring groove is not greater than the length of the laying channel.

[0016] The flow steel pipeline is inserted into the layout channel; the inner walls at both ends of the layout channel are coated with refractory mud.

[0017] The blowing structure comprises an air inlet pipe arranged on the middle partition wall; the air inlet pipe extends close to the flow steel pipeline; the air inlet pipe is connected to an air supply mechanism; the air supply mechanism supplies air into the flow steel pipeline through the air inlet pipe.

[0018] The flow steel pipeline is arranged in an inclined manner; the height of one end of the flow steel pipeline in the bearing steel chamber from the horizontal plane is greater than the height of one end of the flow steel pipeline close to the distribution chamber from the horizontal plane.

[0019] The flow steel structure includes two flow steel pipelines, and the two flow steel pipelines are distributed in an eight-shaped shape.

[0020] A construction guard plate is respectively provided at both ends of the flow steel pipeline.

[0021] A casting construction method based on the induction tundish, the construction method comprising the following steps:

[0022] Step 1: Make a flow steel pipeline; install a blowing structure on the middle partition wall of the tundish body;

[0023] Step 2: After step 1 is completed, assemble the finished flow steel pipe into the layout channel corresponding to the tundish body;

[0024] Step 3: After step 2 is completed, tie a permanent layer in the steel-bearing chamber of the induction tundish and the casting chamber;

[0025] Step 4: After step 3 is completed, apply the working layer in the steel-bearing chamber and casting chamber of the induction tundish;

[0026] Step 5: After step 4 is completed, install the heating core;

[0027] Step 6: After step 5 is completed, the overall installation of the tundish is completed and can be put into subsequent use;

[0028] Step 7: Before the induction tundish starts pouring, the blowing structure first supplies a stable blowing flow rate into the tundish body;

[0029] After the induction tundish casting is completed, the casting residue of the induction tundish is turned over, the flow steel pipe is purged, construction guard plates are placed at both ends of the flow steel pipe, and the working layer of the induction tundish is coated again;

[0030] Before the next production line, the construction guard plate is removed, the induction tundish is preheated and the casting is started again.

[0031] Before the step 2 is started, the blowing structure first supplies air to purge the layout channel.

[0032] Before starting step 3, a construction guard plate is arranged at both ends of the installed flow steel pipeline.

[0033] The advantages of the present invention are:

[0034] The invention discloses an induction tundish and a casting construction method based on the induction tundish.

[0035] The induction tundish disclosed by the present invention can connect protective gas to the steel flow channel before pouring production by setting the blowing structure, form a protective gas film on the inner wall of the steel flow channel in advance, and prevent the adhesion of cold steel.

[0036] In addition, a stable blowing flow rate is maintained during the casting process. After the casting is completed, under the action of argon bubbles, the remaining steel in the steel flow channel can flow completely into the casting chamber, ensuring the cleanliness of the inner wall of the steel flow channel.

[0037] At the same time, the service life of the flow steel channel is greatly improved compared with the normal flow steel channel. The service life of the flow steel channel can be effectively recycled for more than 25 times, which is equivalent to the working life of the permanent layer of the tundish. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The following is a brief description of the contents expressed in the drawings of the present specification and the marks in the drawings:

[0039] Figure 1 It is a top view of the present invention.

[0040] Figure 2 It is a cross-sectional view of the present invention.

[0041] Figure 3 It is a cross-sectional view of the mid-stream steel pipeline of the present invention.

[0042] Figure 4 It is a schematic structural diagram of the air intake pipe of the present invention when it includes a branch air intake pipe.

[0043] The marks in the above figure are:

[0044] 1. Flow steel pipeline, 2. Casting chamber, 3. Flow steel channel, 5. Supporting steel chamber, 6. Diffusion ring groove, 7. Middle partition wall, 8. Guard plate, 9. Inlet pipe. DETAILED DESCRIPTION

[0045] The specific implementation of the present invention will be further explained in detail below by describing the optimal embodiment with reference to the accompanying drawings.

[0046] An induction tundish comprises a tundish body; the tundish body comprises a steel-bearing chamber 5, an intermediate partition wall 7 and a casting chamber 2; the steel-bearing chamber 5 is connected to the casting chamber 2 via the intermediate partition wall 7; a steel flow structure is arranged on the intermediate partition wall 7; the steel-bearing chamber 5 is connected to the casting chamber 2 via the steel flow structure; the steel flow structure comprises a steel flow pipe 1 arranged on the intermediate partition wall 7, and a steel flow channel 3 is arranged on the steel flow pipe 1; the steel-bearing chamber 5 is connected to the casting chamber 2 via the steel flow channel 3; an air blowing structure is also arranged on the intermediate partition wall 7, and the air blowing structure is used to supply air into the steel flow channel 3; the induction tundish disclosed in the present invention can connect protective gas to the steel flow channel 3 before starting casting production through the setting of the air blowing structure, so as to form a protective gas film on the inner wall of the steel flow channel 3 in advance, thereby preventing the adhesion of cold steel.

[0047] In addition, a stable blowing flow rate is maintained during the casting process. After the casting is completed, under the action of argon bubbles, the remaining steel in the steel flow channel 3 can flow completely to the casting chamber 2, ensuring that the inner wall of the steel flow channel 3 is clean.

[0048] At the same time, the service life of the steel flow channel 3 is greatly improved compared with the service life of the normal steel flow channel 3. The service life of the steel flow channel 3 can be effectively recycled for more than 25 times, which is equivalent to the working life of the permanent layer of the tundish.

[0049] The induction tundish disclosed in the present invention mainly includes a tundish body; the tundish body has a tundish shell welded with 20Mn23AlV non-magnetic steel plates; then the tundish body is built into two cavities with refractory materials, namely a steel chamber 5 and a casting chamber 2; the steel chamber 5 is an area for injecting molten steel from a large ladle with a long shroud into the tundish, and its purpose is to buffer the molten steel from the large ladle after entering the tundish through the long shroud, and to provide a certain space for large particle inclusions to rise.

[0050] The other cavity is the casting chamber 2, that is, the area where the molten steel poured by each submerged nozzle flows into the crystallizer. Its purpose is to allow the heated molten steel that has passed through the flow channel 3 to have a certain residence time after entering the casting chamber 2 due to the pinching effect in the channel, so that the temperature and composition of the poured molten steel are uniform and the flow rate is stable.

[0051] In addition, the steel-bearing chamber 5 disclosed in the present invention is connected to the casting chamber 2 through an intermediate partition wall 7; a flow steel structure is provided on the intermediate partition wall 7; the flow steel structure is mainly used for the communication and connection between the steel-bearing chamber 5 and the casting chamber 2; in addition, in the present invention, the steel-bearing chamber 5 is connected to the casting chamber 2 through the flow steel structure; the flow steel structure includes a flow steel pipe 1 arranged on the intermediate partition wall 7, and a flow steel channel 3 is provided on the flow steel pipe 1; the steel-bearing chamber 5 is connected to the casting chamber 2 through the flow steel channel 3; the flow steel pipe 1 of the present invention is arranged to penetrate the intermediate partition wall 7, and a flow steel channel 3 is provided on the flow steel pipe 1, and the flow steel channel 3 is arranged to penetrate the flow steel pipe 1, so as to facilitate the subsequent flow transfer of molten steel from the steel-bearing chamber 5 to the casting chamber 2.

[0052] At the same time, a blowing structure is also provided on the middle partition wall 7 in the present invention, and the blowing structure is used to supply gas to the steel flow channel 3; the induction ladle disclosed in the present invention can connect protective gas to the steel flow channel 3 before pouring production through the setting of the blowing structure, and form a protective gas film on the inner wall of the steel flow channel 3 in advance, thereby preventing the adhesion of cold steel.

[0053] In addition, a stable blowing flow rate is maintained during the casting process. After the casting is completed, under the action of argon bubbles, the remaining steel in the steel flow channel 3 can flow completely to the casting chamber 2, ensuring that the inner wall of the steel flow channel 3 is clean.

[0054] In the present invention, the flow steel pipe 1 is made of a breathable material, that is, gas can enter, but it is required that the molten steel cannot flow out from the side of the flow steel pipe 1.

[0055] Based on the above design, the steel flow pipeline 1 disclosed in the present invention can realize the normal transfer of molten steel while also realizing the entry of gas. Under the blowing of the blowing structure, it can promote the flow of molten steel while effectively protecting the steel flow channel 3.

[0056] Furthermore, in the present invention, a laying channel for arranging the flow steel pipeline 1 is provided on the middle partition wall 7; the provision of the laying channel facilitates the arrangement and placement of the flow steel pipeline 1 on the middle partition wall 7.

[0057] At the same time, a diffusion annular groove 6 is provided on the inner wall of the laying channel in the present invention; in the present invention, the diffusion annular groove 6 is equivalent to being arranged on the inner wall of the laying channel. With such an arrangement, during subsequent use, there is a gap between the inner wall of the middle partition wall 7 and the flow steel pipeline 1, forming a blowing slit, which is beneficial to ensure that the protective gas enters multiple positions in the length direction of the flow steel pipeline 1; not only the air intake volume can be guaranteed, but also the air intake position can be guaranteed.

[0058] In addition, in the present invention, the length of the diffusion ring groove 6 is not greater than the length of the layout channel; based on such a setting, the layout channel has a structure with small inner diameters at both ends and a large inner diameter in the middle; such a setting enables the layout channel to form a stepped groove structure, which is convenient for limiting the filling position of the protective gas and avoiding overflow of the protective gas.

[0059] In the present invention, the flow steel pipeline 1 is inserted into the laying channel; the inner walls at both ends of the laying channel are coated with refractory mud; based on such a setting, the arrangement and placement of the flow steel pipeline 1 is facilitated, and at the same time, the sealing of the connection between the flow steel pipeline 1 and the laying channel can be ensured.

[0060] Furthermore, the blowing structure in the present invention includes an air inlet pipe 9 arranged on the middle partition wall 7; the air inlet pipe 9 extends close to the flow steel pipeline 1; the air inlet pipe 9 is connected to a gas supply mechanism; the gas supply mechanism supplies gas into the flow steel pipeline 1 through the air inlet pipe 9; in the present invention, the air inlet pipe 9 acts as a plug-in tube, which is convenient for introducing gas from the outside of the middle partition wall 7 into the layout channel, and then into the subsequent flow steel pipeline 1; in the present invention, the air inlet pipe 9 and the flow steel pipeline 1 are distributed at intervals. In actual use, the gas enters the diffusion ring groove 6 through the air inlet pipe 9, and then enters the flow steel channel 3 through the flow steel pipeline 1; there are many types of air supply mechanisms. In theory, as long as the protective gas can be supplied to the air inlet pipe 9, argon is generally used as the protective gas in the present invention; so the air supply mechanism can use an argon tank; the argon pipe is connected to the air inlet pipe 9 through a connecting pipe, and a control valve is provided on the connecting pipe; it is convenient to control the on and off of the air supply of the blowing structure.

[0061] In the present invention, the air intake pipe includes a main air intake pipe 92, and the main air intake pipe 92 is connected to a plurality of branch air intake pipes 91; generally, one main air intake pipe 92 is connected to three branch air intake pipes 91; and the inner diameter of the middle branch air intake pipe 91 is required to be larger than the inner diameter of the branch air intake pipes 91 on both sides, and the three branch air intake pipes 91 are respectively distributed at both ends and the middle of the flow steel pipeline; such a setting can better ensure that the protective gas supplied by the air intake pipe is better arranged in the entire length direction of the flow steel pipeline, and better achieve the purpose of the present invention; that is, better realize that argon gas enters the flow steel channel, and under the action of the pressure difference, it is diffusely blown into the molten steel in the channel, which promotes the floating of inclusions and improves the purity of the molten steel, while preventing cold steel and residue from adhering to the inner wall of the flow steel channel 3, thereby extending the service life of the flow steel channel 3.

[0062] At the same time, the above design can avoid the related problems caused by excessive air intake in the middle of the flow steel pipeline, and also avoid the problem of slow gas diffusion affecting the air intake speed; overall, it is to optimize the speed of the shielding gas entering the flow steel channel and optimize the use effect of the shielding gas.

[0063] Furthermore, in the present invention, the steel flow pipe 1 is arranged at an angle; the height of one end of the steel flow pipe 1 in the steel supporting chamber 5 from the horizontal plane is greater than the height of one end of the steel flow pipe 1 close to the distribution chamber from the horizontal plane; the steel flow channel 3 is arranged at an angle, which facilitates the smooth flow of molten steel from the steel supporting chamber 5 to the casting chamber 2, and better ensures that there is no residue in the steel flow channel 3.

[0064] In addition, in the present invention, the height of one end of the flow steel pipe 1 in the steel bearing chamber 5 from the horizontal plane is greater than the height of the end of the flow steel pipe 1 close to the distribution chamber from the horizontal plane; based on this design, the gravity of the molten steel itself can be used to ensure the flow of the molten steel.

[0065] In actual design, the inclination angle of the flow steel pipeline 1 relative to the horizontal plane is 4°.

[0066] Furthermore, the steel flow structure in the present invention includes two steel flow pipes 1, and the two steel flow pipes 1 are distributed in an eight-shaped shape; based on such a configuration, it is convenient for the molten steel to diffuse better in the casting chamber 2.

[0067] Furthermore, in the present invention, a construction guard plate 8 is respectively provided at both ends of the flow steel pipeline 1; the setting of the construction guard plate 8 plays a good sealing role, which is essentially equivalent to a cover plate structure, avoiding contamination of the flow steel channel 3 when knotting the permanent layer of the intermediate ladle or applying the working layer of the intermediate ladle.

[0068] A casting construction method based on the induction tundish, the construction method comprising the following steps:

[0069] Step 1: Make a flow steel pipeline 1; install a blowing structure on the middle partition wall 7 of the tundish body;

[0070] Step 2: After step 1 is completed, the manufactured flow steel pipe 1 is assembled into the layout channel corresponding to the tundish body;

[0071] Step 3: After step 2 is completed, a permanent layer is tied in the steel-bearing chamber 5 of the induction tundish and the casting chamber 2;

[0072] Step 4: After step 3 is completed, apply the working layer in the steel-bearing chamber 5 and the casting chamber 2 of the induction tundish;

[0073] Step 5: After step 4 is completed, install the heating core;

[0074] Step 6: After step 5 is completed, the overall installation of the tundish is completed and can be put into subsequent use;

[0075] Step 7: Before the induction tundish starts pouring, the blowing structure first supplies a stable blowing flow rate into the tundish body;

[0076] After the induction tundish casting is completed, the casting residue of the induction tundish is turned over, the flow steel pipeline 1 is purged, and construction guard plates 8 are placed at both ends of the flow steel pipeline 1, and the induction tundish working layer is coated again;

[0077] Before the next online operation, the construction guard plate 8 is removed, the induction tundish is preheated and the casting is started again online.

[0078] The present invention is based on the above construction method, which not only facilitates the installation of the flow steel pipeline 1 on the tundish body, but also facilitates the subsequent use of the induction tundish through the above design.

[0079] Furthermore, before starting step 2 in the present invention, the blowing structure first supplies air to purge the laying channel; based on this design, it is possible to avoid the presence of debris in the laying channel that affects the normal laying of the flow steel pipeline 1.

[0080] Furthermore, before starting step 3 described in the present invention, a construction guard plate 8 is arranged at both ends of the installed flow steel pipeline 1; the setting of the construction guard plate 8 plays a good sealing role, which is essentially equivalent to a cover plate structure, avoiding contamination of the flow steel channel 3 when knotting the permanent layer of the intermediate ladle or applying the working layer of the intermediate ladle.

[0081] specific:

[0082] The present invention discloses an induction tundish structure, which is mainly intended to solve the problem of the steel flow channel 3 being blocked by the adhesion of excess steel and excess slag during the recycling process, thereby affecting the service life of the permanent layer of the tundish, and to achieve the service life of the steel flow channel 3 of the induction heating tundish being equivalent to the service life of the permanent layer of the tundish.

[0083] In the present invention, the middle partition wall 7 is built of flow steel bricks. In addition, an argon blowing channel is provided on the middle partition wall 7, and an air inlet pipe 9 is filled in the argon blowing channel. Argon is connected to the air inlet pipe 9 to realize the introduction of argon into the flow steel channel 3.

[0084] When installing the flow steel brick, the channel hole of the flow steel channel 3 is designed to have an inclination of 4° from the steel bearing chamber 5 to the casting chamber 2. The inner cavity diameter is designed to be 4 to 6 mm larger than the two ends, and a circle of 2 to 3 mm slits is formed on the outer line of the flow steel channel 3.

[0085] The flow steel pipeline 1 adopts permeable refractory material to prefabricate the flow steel channel 3, and the indicators of the permeable refractory material are (Al2O3% ≥ 89, Cr2O3% ≥ 3.0, SiO2% ≥ 3, apparent porosity% ≤ 16.0, bulk density g / cm3 ≥ 3.0, and normal temperature compressive strength MPa1500℃ ≥ 150.0).

[0086] Baffles are respectively made at the steel-bearing chamber 5 end of the steel flow pipeline 1 and the casting chamber 2 end to prevent refractory materials or other debris from adhering to the inner wall of the steel flow channel 3 during the installation of steel flow bricks and the repair of refractory materials in the tundish.

[0087] The present invention relates to the technical field of metallurgical continuous casting. In the tundish flow field of the continuous casting process, for the channel through which molten steel flows under the heating effect of a plasma heating device, the refractory material of the channel is compositely designed and connected to an argon blowing system. Argon gas passes through a steel flow channel 3 and is diffusely blown into the molten steel in the channel under the action of a pressure difference, which promotes the floating of inclusions and improves the purity of the molten steel, while preventing cold steel and residue from adhering to the inner wall of the steel flow channel 3, thereby extending the service life of the steel flow channel 3.

[0088] The present invention designs the steel flow channel 3 to be inclined at a 4° angle, connects argon gas through the air inlet, the argon gas flows to the channel slit, and then flows into the molten steel inside the channel through the air permeable channel to promote the circulation of molten steel and prevent steel slag from blasting the inner wall of the channel.

[0089] The steel flow channel 3 is designed to be inclined downward by 4°. At the end of casting, the molten steel in the tundish steel chamber 5 can flow completely to the casting chamber 2, thereby improving the billet forming rate of smelting and casting.

[0090] By connecting the argon blowing system in the integral flow steel brick, the flow of molten steel is promoted and the flow steel channel 3 is effectively protected.

[0091] The innovative composite design of the refractory material of the steel flow channel 3 allows the incoming argon gas to diffuse and distribute on the inner wall of the steel flow channel 3, thereby promoting the floating of inclusions and preventing steel slag from adhering to the inner wall of the steel flow channel 3.

[0092] By adopting the above steel flow channel 3, argon gas is connected to the air inlet pipe 9 before production, and an argon gas film is formed on the inner wall of the channel in advance, which prevents the cold steel from sticking and ensures the effect of diffuse argon blowing in the entire channel. A stable argon blowing flow rate is maintained during the casting process. After the casting is completed, under the action of argon bubbles, the remaining steel in the channel can flow completely to the casting chamber 2, ensuring the cleanliness of the inner wall of the channel and the argon blowing effect. The service life of the steel flow channel 3 is greatly improved compared with the service life of the normal steel flow channel 3. The service life of the steel flow channel 3 can be effectively recycled for more than 25 times, which is equivalent to the working life of the permanent layer of the tundish.

[0093] Specific implementation steps:

[0094] (1) Flow steel channel 3 breathable refractory material indicators: Al 2O3% ≥ 89, Cr2O3% ≥ 3.0, SiO2% ≥ 3, apparent porosity % ≤ 16.0, bulk density g / cm3 ≥ 3.0, room temperature compressive strength MPa1500℃ ≥ 150.0.

[0095] (2) Connect the air inlet pipe 9 to the flow steel in advance, and clean the steel channel of the flow steel brick and the channel of the air inlet pipe 9; install the flow steel channel 3 to the integral flow steel brick,

[0096] (3) Apply appropriate refractory mud on both ends of the steel flow channel 3 installed on the steel flow brick, place the steel retention channel, and ensure that the width of the slit is 2 to 3 mm

[0097] (4) Install the integral flow steel bricks, place baffles 8 at both ends of the flow steel channel 3, tie the permanent layer of the tundish, and after the permanent layer of the tundish is demoulded and dried, connect the gas inlet to the gas test.

[0098] (5) After the working layer of the tundish is coated, the heating core is installed, the baffle is removed, and the tundish is preheated as a whole and put into use.

[0099] (6) Before starting the casting process, connect argon to the air inlet and maintain a stable argon blowing flow until the tundish is completely cast.

[0100] (7) After the casting of the tundish is completed, the remaining casting in the tundish is turned over, the steel flow channel 3 is purged, baffles are placed at both ends of the steel flow channel 3, and the working layer of the tundish is coated. The baffles are removed before going online, and the tundish is preheated and used again.

[0101] Obviously, the specific implementation of the present invention is not limited to the above-mentioned methods. As long as various non-substantial improvements are made using the method concept and technical solution of the present invention, they are all within the protection scope of the present invention.

Claims

1. An induction tundish, characterized in that: The tundish body comprises a steel-bearing chamber, a middle partition wall and a casting chamber; the steel-bearing chamber and the casting chamber are connected via the middle partition wall; The middle partition wall is provided with a flow steel structure; the bearing steel chamber is connected to the casting chamber through the flow steel structure; the flow steel structure comprises a flow steel pipeline arranged on the middle partition wall, and the flow steel pipeline is provided with a flow steel channel; The steel bearing chamber is connected with the casting chamber through a steel flow channel; The middle partition wall is also provided with an air blowing structure, which is used to supply air into the steel flow channel.

2. The induction tundish according to claim 1, characterized in that: The middle partition wall is provided with a laying channel for arranging flow steel pipes; the inner wall of the laying channel is provided with a diffusion ring groove; the length of the diffusion ring groove is not greater than the length of the laying channel.

3. The induction tundish according to claim 2, characterized in that: The flow steel pipeline is inserted into the layout channel; the inner walls at both ends of the layout channel are coated with refractory mud.

4. An induction tundish according to any one of claims 1 to 3, characterized in that: The blowing structure comprises an air inlet pipe arranged on the middle partition wall; the air inlet pipe extends close to the flow steel pipeline; the air inlet pipe is connected to an air supply mechanism; the air supply mechanism supplies air into the flow steel pipeline through the air inlet pipe.

5. The induction tundish according to claim 1, characterized in that: The flow steel pipeline is arranged in an inclined manner; the height of one end of the flow steel pipeline in the bearing steel chamber from the horizontal plane is greater than the height of one end of the flow steel pipeline close to the distribution chamber from the horizontal plane.

6. The induction tundish according to claim 1, characterized in that: The flow steel structure includes two flow steel pipelines, and the two flow steel pipelines are distributed in an eight-shaped shape.

7. The induction tundish according to claim 1, characterized in that: A construction guard plate is respectively provided at both ends of the flow steel pipeline.

8. A casting construction method based on the induction tundish according to any one of claims 1 to 7, characterized in that: The construction method comprises the following steps: Step 1: Make a flow steel pipeline; install a blowing structure on the middle partition wall of the tundish body; Step 2: After step 1 is completed, assemble the finished flow steel pipe into the layout channel corresponding to the tundish body; Step 3: After step 2 is completed, tie a permanent layer in the steel-bearing chamber of the induction tundish and the casting chamber; Step 4: After step 3 is completed, apply the working layer in the steel-bearing chamber and casting chamber of the induction tundish; Step 5: After step 4 is completed, install the heating core; Step 6: After step 5 is completed, the overall installation of the tundish is completed and can be put into subsequent use; Step 7: Before the induction tundish starts pouring, the blowing structure first supplies a stable blowing flow rate into the tundish body; After the induction tundish casting is completed, the casting residue of the induction tundish is turned over, the flow steel pipe is purged, construction guard plates are placed at both ends of the flow steel pipe, and the working layer of the induction tundish is coated again; Before the next production line, the construction guard plate is removed, the induction tundish is preheated and the casting is started again.

9. The casting construction method of the induction tundish according to claim 8 is characterized in that: Before the step 2 is started, the blowing structure first supplies air to purge the layout channel.

10. The casting construction method of the induction tundish according to claim 8, characterized in that: Before starting step 3, a construction guard plate is arranged at both ends of the installed flow steel pipeline.

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