TB13 wire rod smelting process

Abstract

The invention provides a TB13 wire rod smelting process, and belongs to the technical field of wire rod smelting, a wire rod smelting device comprises the steps that a TB13 titanium alloy raw material is loaded into a TB13 material smelting furnace, the raw material loading capacity does not exceed 80% of the volume of a furnace body, the TB13 material smelting furnace is aligned to an upper opening of a preheating closed sleeve and slowly lowered to be in preliminary contact with a smelting furnace supporting pipe, and the TB13 material smelting furnace is heated to be in a closed state; through the elastic force of a reset spring of the sealing assembly, a spring reset push plate pushes a sealing sliding plate, a preheating sealing sleeve is upwards pushed to be in sealing fit with the lower end of a preheating sealing ferrule, an opening in the upper end of the intermediate-frequency smelting furnace is sealed, residual heat in the intermediate-frequency smelting furnace is used for conducting heat preservation on a furnace body, and the TB13 material smelting furnace is put down along the inner wall of the preheating sealing sleeve; the preheating sealing sleeve is pressed by the self weight of the TB13 material melting furnace to move downwards, so that an annular notch is formed between the preheating sealing sleeve and the preheating sealing ferrule, preheating air flow in the medium-frequency melting furnace is released to the outer wall of the TB13 material melting furnace, and TB13 materials in the furnace are preliminarily preheated.

Description

Technical Field

[0001] The present invention belongs to the technical field of coil manufacturing, and particularly relates to a melting process for TB13 coils. Background Art

[0002] In the process of manufacturing coils of titanium alloy materials (such as TB13), melting is a key step. Existing technologies usually rely on traditional intermediate frequency melting furnaces for heating treatment. These devices often focus on direct heating efficiency and melting temperature control, but there are deficiencies in preheating utilization. Most traditional melting equipment lacks effective preheating recovery or utilization mechanisms, resulting in a large amount of energy consumption during the preheating process of raw materials and the melting furnace body itself before melting. This not only increases production costs but also reduces overall energy efficiency. Due to the inability to effectively utilize preheating, these systems require more energy to reach the required operating temperature at the initial startup stage, and at the same time, it will also cause relatively large temperature fluctuations, affecting the consistency of melting quality. Especially in large-scale continuous production, this defect will be more obvious, restricting the economy and environmental protection of production. Summary of the Invention

[0003] The purpose of the present invention is to provide a melting process for TB13 coils, aiming to solve the problem of insufficient preheating utilization in the existing technology. Most traditional melting equipment lacks effective preheating recovery or utilization mechanisms, resulting in a large amount of energy consumption during the preheating process of raw materials and the melting furnace body itself before melting.

[0004] To achieve the above purpose, the present invention provides the following technical solutions:

[0005] A melting process for TB13 coils, comprising:

[0006] S1. Load the TB13 titanium alloy raw materials into the TB13 material melting furnace, with the raw material loading amount not exceeding 80% of the furnace volume. Align the TB13 material melting furnace with the upper opening of the preheating closed sleeve, and slowly lower it until it is in preliminary contact with the melting furnace support pipe. Through the elastic force of the return spring of the closing component, the spring return push plate pushes the plugging slide plate to push the preheating closed sleeve upward to be in sealed cooperation with the lower end of the preheating closed ring, closing the upper opening of the intermediate frequency melting furnace, and using the residual heat in the intermediate frequency melting furnace to keep the furnace body warm;

[0007] S2. Lower the TB13 material melting furnace along the inner wall of the preheating closed sleeve. By the self-weight of the TB13 material melting furnace, the preheating closed sleeve is pressed to move downward, so that an annular gap is formed between the preheating closed sleeve and the preheating closed ring, releasing the preheating air flow in the intermediate frequency melting furnace to the outer wall of the TB13 material melting furnace to preliminarily preheat the TB13 material in the furnace;

[0008] S3. When the preheating closing sleeve slides to the lowermost end, the spring reset push plate inserts into the intermediate frequency melting furnace. At the same time, the furnace mouth closing cover presses the upper end of the upper support ring through the pressing cover plate and the sealing pressing spring. Start the intermediate frequency electromagnetic coil, operate at low power for 5 minutes first, and then increase to full power after the magnetic field stabilizes. Heat the raw materials in the TB13 material melting furnace to the molten state through electromagnetic induction, and the duration is 40 - 60 minutes.

[0009] S4. Control the external elevator to drive the lifting arm of the melting furnace to finely adjust the height of the intermediate frequency melting furnace, align the discharge inclined port with the inlet of the external mold, drive the discharge drive rotating shaft to rotate through the drive motor, tilt the TB13 material melting furnace, and the molten titanium alloy liquid flows into the external mold along the discharge inclined port.

[0010] S5. After the melting is completed, turn off the intermediate frequency electromagnetic coil. Subsequently, under the action of the reset spring, the closing assembly pushes the preheating closing sleeve to move upward and reset, re - closing the intermediate frequency melting furnace, storing the waste heat in the furnace for the preheating stage of the next furnace, and forming heat recycling.

[0011] As a preferred solution of the present invention, multiple groups of the closing assemblies are provided. Each group of the closing assemblies includes a plugging cylinder groove, a plugging slide plate, a spring reset push plate, a reset spring, and a closing groove. The plugging cylinder groove is opened on the circumferential inner walls of the intermediate frequency melting furnace and the upper support ring. The plugging slide plate is slidably connected in the plugging cylinder groove. The spring reset push plate is fixedly connected to the upper end of the plugging slide plate. The closing groove is opened on the upper end of the upper support ring. The spring reset push plate is slidably connected in the closing groove. The reset spring is fixedly connected to the lower end of the spring reset push plate and the upper end of the intermediate frequency melting furnace.

[0012] As a preferred solution of the present invention, the upper support ring is fixedly connected to the upper end of the intermediate frequency melting furnace. The preheating closing ring is fixedly connected to the upper inner wall of the intermediate frequency melting furnace. The preheating closing sleeve is fixedly connected to the lower ends of multiple plugging slide plates. The intermediate frequency electromagnetic coil is arranged in the intermediate frequency melting furnace. The preheating closing sleeve is made of gradient composite ceramic material. The lower end of the preheating closing ring matches the upper end of the preheating closing sleeve. The TB13 material melting furnace is slidably connected in the preheating closing sleeve.

[0013] As a preferred solution of the present invention, a melting furnace support pipe is fixedly connected to the upper end of the TB13 material melting furnace, and a furnace mouth closing cover is fixedly connected to the upper end of the melting furnace support pipe.

[0014] As a preferred solution of the present invention, when the preheating closing sleeve slides to the lowermost end, the spring reset push plate inserts into the intermediate frequency melting furnace, and the furnace mouth closing cover closes the upper end of the upper support ring.

[0015] As a preferred embodiment of the present invention, an inclined discharge opening is provided at the upper end of the TB13 material melting furnace, and the inclined discharge opening is used to incline the titanium alloy melt.

[0016] As a preferred embodiment of the present invention, a rubber heat insulation sleeve ring is sleeved on the outer surface of the furnace mouth closing cover, a pressing cover plate is provided at the outer end of the furnace mouth closing cover, and the furnace mouth closing cover and the rubber heat insulation sleeve ring slide within the pressing cover plate.

[0017] As a preferred embodiment of the present invention, a limiting sliding groove is provided at the upper end of the pressing cover plate, a plurality of sealing pressing springs are fixedly connected between the lower inner wall of the pressing cover plate and the upper end of the furnace mouth closing cover, and a plurality of limiting sliding rods are fixedly connected to the upper end of the furnace mouth closing cover.

[0018] As a preferred embodiment of the present invention, an upper limiting block and a lower limiting block are fixedly connected to the circumferential surface of the limiting sliding rod, the upper limiting block slides at the upper end of the limiting sliding groove, and the lower limiting block slides at the upper end of the limiting sliding groove.

[0019] As a preferred embodiment of the present invention, a discharge driving rotating shaft is fixedly connected to one side end of the intermediate frequency melting furnace, a rotating shaft support sleeve ring is rotatably connected to the outer surface of the discharge driving rotating shaft, a driving motor is fixedly connected to one side end of the rotating shaft support sleeve ring, and the output end of the driving motor is fixed to the discharge driving rotating shaft.

[0020] As a preferred embodiment of the present invention, a melting furnace lifting arm is fixedly connected to one side end of the rotating shaft support sleeve ring, and the melting furnace lifting arm is connected to an external lifting mechanism.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] 1. Through the collaborative work of the preheating closed sleeve and the preheating closed sleeve ring, this design scheme can effectively utilize the preheating to keep the furnace body warm, and guide the preheating to the material when the TB13 material melting furnace moves downward to realize the preliminary preheating of the material. This design not only reduces the energy consumption required in the initial startup stage, improves the energy utilization efficiency, and is applicable to small and medium-sized steel mills or recycled metal recycling.

[0023] 2. The separated design of the intermediate frequency melting furnace and the TB13 material melting furnace significantly improves the operation flexibility and maintenance convenience of the system. This design allows the material melting furnace to be independently loaded, unloaded, replaced or repaired without interrupting the operation of the main furnace body, greatly reducing the downtime and production interference, and improving the utilization rate and production efficiency of the overall equipment.

[0024] 3. By integrating various safety designs, such as a sealed downward pressure spring, a limiting slide bar, and upper and lower limiting blocks thereon, the stability and sealing performance of the furnace mouth closing cover during operation are ensured. These designs effectively prevent the leakage risks that may occur during the smelting process, protect the safety of operators, and reduce potential environmental pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings are used to provide a further understanding of the present invention and form a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention. In the drawings:

[0026] Figure 1 is the process flow of the present invention;

[0027] Figure 2 is the exploded view of the device structure in the present invention;

[0028] Figure 3 is the first structural sectional view of the device in the present invention;

[0029] Figure 4 is the second structural sectional view of the device in the present invention;

[0030] Figure 5 is the third structural sectional view of the device in the present invention;

[0031] Figure 6 is the exploded view of the second structural section of the device in the present invention;

[0032] Figure 7 is the third structural sectional view of the device in the present invention;

[0033] Figure 8 is the present invention Figure 3 the enlarged view of part A in;

[0034] Figure 9 is the present invention Figure 5 the enlarged view of part B in the figure;

[0035] Figure 10 is the three-dimensional view of the device structure of the present invention.

[0036] In the figure: 1. Intermediate frequency melting furnace; 2. Upper support ring; 3. Plugging cylinder groove; 4. Plugging slide plate; 5. Spring return push plate; 6. Return spring; 7. Preheating closed sleeve; 8. Preheating closed ring; 9. Intermediate frequency electromagnetic coil; 10. TB13 material melting furnace; 11. Closing groove; 12. Furnace mouth closing cover; 13. Furnace support pipe; 14. Discharge inclined opening; 15. Pressing down cover plate; 16. Rubber heat insulation ring; 17. Sealing pressing spring; 18. Limit slide bar; 19. Upper limit block; 20. Lower limit block; 21. Limit slide groove; 23. Discharge drive rotating shaft; 24. Rotating shaft support ring; 25. Drive motor; 26. Furnace lifting arm. Specific embodiments

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0038] Embodiment 1

[0039] Please refer to Figures 1 - 10 , the present invention provides the following technical solutions:

[0040] A TB13 wire rod melting process, including:

[0041] S1. Load TB13 titanium alloy raw materials such as scrap steel and alloy ingots into the TB13 material melting furnace 10, and the raw material loading amount does not exceed 80% of the furnace body volume. Align the TB13 material melting furnace 10 with the upper opening of the preheating closed sleeve 7, and slowly lower it until it is in preliminary contact with the furnace support pipe 13. Through the elastic force of the return spring 6 of the closing assembly, the spring return push plate 5 pushes the plugging slide plate 4 to push the preheating closed sleeve 7 upward until it is in sealed cooperation with the lower end of the preheating closed ring 8, closing the upper opening of the intermediate frequency melting furnace 1, and using the residual heat in the intermediate frequency melting furnace 1 to keep the furnace body warm;

[0042] S2. Lower the TB13 material melting furnace 10 along the inner wall of the preheating closed sleeve 7. Press down the preheating closed sleeve 7 by the self-weight of the TB13 material melting furnace 10, so that an annular gap is formed between the preheating closed sleeve 7 and the preheating closed ring 8, and release the preheating air flow in the intermediate frequency melting furnace 1 to the outer wall of the TB13 material melting furnace 10 to preliminarily preheat the TB13 material in the furnace;

[0043] S3. When the preheating closed sleeve 7 slides to the lowermost end, the spring return push plate 5 inserts into the intermediate frequency melting furnace 1. At the same time, the furnace mouth closing cover 12 presses the upper end of the upper support ring 2 tightly through the pressing plate 15 and the sealing pressing spring 17. Start the intermediate frequency electromagnetic coil 9 and operate it at a low power of 100 - 200 kW for 5 minutes. After the magnetic field stabilizes, increase the power to the full power of 200 - 500 kW, and heat the raw materials in the TB13 material melting furnace 10 to the molten state by electromagnetic induction for a duration of 40 - 60 minutes;

[0044] S4. Control the external elevator to drive the furnace lifting arm 26 to finely adjust the height of the intermediate frequency melting furnace 1, align the discharge inclined port 14 with the external mold inlet, drive the discharge drive rotating shaft 23 to rotate through the drive motor 25, tilt the TB13 material melting furnace 10, and let the molten titanium alloy liquid flow into the external mold along the discharge inclined port 14.

[0045] S5. After the melting is completed, turn off the intermediate frequency electromagnetic coil 9. Subsequently, under the action of the return spring 6, the closing assembly pushes the preheating closed sleeve 7 to move upward and reset, re - closing the intermediate frequency melting furnace 1, storing the waste heat in the furnace for the preheating stage of the next furnace, and forming a heat recycling utilization.

[0046] In a specific embodiment of the present invention, multiple groups of the closing components are provided. Each group of the closing components includes a plugging cylinder groove 3, a plugging slide plate 4, a spring reset push plate 5, a reset spring 6, and a closing groove 11. The plugging cylinder groove 3 is opened on the circumferential inner walls of the intermediate frequency melting furnace 1 and the upper support ring 2. The plugging slide plate 4 is slidably connected in the plugging cylinder groove 3. A graphite lubricating layer is provided on the inner wall of the plugging cylinder groove 3, allowing the plugging slide plate 4 to slide smoothly at a speed of 0.1 - 0.3 m / s. The spring reset push plate 5 is fixedly connected to the upper end of the plugging slide plate 4. The closing groove 11 is opened on the upper end of the upper support ring 2. The spring reset push plate 5 is slidably connected in the closing groove 11. A displacement sensor is provided in the closing groove 11 for monitoring the sliding stroke of the spring reset push plate 5 in the closing groove 11. When the stroke reaches the set value, an activation signal for the intermediate frequency electromagnetic coil 9 is automatically triggered. During the preheating release stage of the closing component, the intermediate frequency electromagnetic coil 9 operates at a low power of 50 - 100 kW to maintain the temperature of the preheating air flow in the furnace. The reset spring 6 is fixedly connected to the lower end of the spring reset push plate 5 and the upper end of the intermediate frequency melting furnace 1. The upper support ring 2 is fixed to the upper end of the intermediate frequency melting furnace 1 to cooperate with the furnace mouth closing cover 12 to complete the sealing function of the upper opening of the intermediate frequency melting furnace 1. The material of the plugging slide plate 4 is a graphite - MoSi2 composite material, which is heat - resistant and has a low friction coefficient. The preheating closing sleeve 7 is fixed to the lower ends of multiple plugging slide plates 4 and slides up and down with the plugging slide plates 4. The intermediate frequency electromagnetic coil 9 is wound around the outer wall of the intermediate frequency melting furnace 1. The preheating closing ring 8 is fixed to the upper inner wall of the intermediate frequency melting furnace 1, and its inner diameter matches the outer diameter of the preheating closing sleeve 7 to form a sealing interface. In the initial state, the preheating closing ring 8 and the preheating closing sleeve 7 seal the inside of the intermediate frequency melting furnace 1 under the action of the reset spring 6, and use the residual heat generated by the previous melting for heat preservation. When it is necessary to melt the TB13 material, the TB13 material melting furnace 10 moves downward, pressing down the preheating closing sleeve 7. At this time, the upper opening of the intermediate frequency melting furnace 1 is closed by the furnace mouth closing cover 12. As the preheating closing sleeve 7 moves downward, the notch thereof allows the preheating in the furnace to enter the TB13 material melting furnace 10, and the preheating treatment of the material starts. Once the preheating process is completed, the intermediate frequency electromagnetic coil 9 is activated to further raise the temperature to the melting point to complete the melting of the material, saving 20% - 30% energy compared with traditional electric furnaces, and is applicable to small and medium - sized steel mills or recycled metal recovery.

[0047] Furthermore, the preheating closing sleeve 7 is made of a gradient composite ceramic material. Its lower end and the upper end of the preheating closing ring 8 are in conical surface fit to form an airtight connection under the action of the reset spring 6. When the TB13 material melting furnace 10 is pressed down, the preheating closing sleeve 7 moves downward, and an annular notch is formed between the preheating closing ring 8 and the preheating closing sleeve 7, allowing the high - temperature waste gas in the furnace to enter the outer wall of the TB13 material melting furnace 10 to preheat the coiled material.

[0048] Specifically, please refer to Figures 2 - 10, a melting furnace support pipe 13 is fixedly connected to the upper end of the TB13 material melting furnace 10, and a furnace mouth closing cover 12 is fixedly connected to the upper end of the melting furnace support pipe 13.

[0049] In this embodiment: The melting furnace support pipe 13 is welded to the upper end of the TB13 material melting furnace 10, and the furnace mouth closing cover 12 is fixed to the top of the melting furnace support pipe 13. When the TB13 material melting furnace 10 descends to the lowest position, the furnace mouth closing cover 12 presses against the upper end face of the upper support ring 2 through the rubber heat insulation sleeve ring 16 to form a seal, ensuring that the furnace is in a sealed state when melting the coil raw materials.

[0050] For details, please refer to Figures 2 - 10 , when the preheating closing sleeve 7 slides to the lowermost end, the spring return push plate 5 is inserted into the intermediate frequency melting furnace 1, and the furnace mouth closing cover 12 closes the upper end of the upper support ring 2.

[0051] In this embodiment: When the preheating closing sleeve 7 moves downward, a circumferential gap is formed between its outer wall and the preheating closing ring 8. The high-temperature exhaust gas enters the annular channel between the outer wall of the TB13 material melting furnace 10 and the inner wall of the preheating closing sleeve 7 through the gap to perform composite heating on the coil. At the same time, the furnace mouth closing cover 12 realizes pressure compensation for the upper end of the furnace mouth closing cover 12 by pressing down the cover plate 15 and the sealing compression spring 17, avoiding seal failure caused by thermal expansion.

[0052] For details, please refer to Figures 2 - 10 , a discharge inclined port 14 is provided at the upper end of the TB13 material melting furnace 10, and the discharge inclined port 14 is used to incline the titanium alloy melt.

[0053] In this embodiment: A discharge inclined port 14 is provided on the upper side wall of the TB13 material melting furnace 10, and the inclination angle is 30°. After melting is completed, the TB13 material melting furnace 10 is rotated by the driving motor 25, and the titanium alloy melt is poured along the discharge inclined port 14 into the external mold to achieve directional discharging.

[0054] For details, please refer to Figures 2 - 10 , a rubber heat insulation sleeve ring 16 is sleeved on the outer surface of the furnace mouth closing cover 12, a pressing down cover plate 15 is provided at the outer end of the furnace mouth closing cover 12, and the furnace mouth closing cover 12 and the rubber heat insulation sleeve ring 16 slide within the pressing down cover plate 15.

[0055] In this embodiment: The rubber heat insulation sleeve ring 16 is made of fluororubber, sleeved on the outer surface of the furnace mouth closing cover 12, and forms an elastic seal with the inner wall of the pressing down cover plate 15. The stiffness coefficient of the sealing compression spring 17 is, and it realizes self-adaptive pressing through the limit sliding groove 21 and the limit sliding rod 18 in the high-temperature environment.

[0056] For details, please refer to Figures 2 - 10, a limiting chute 21 is provided at the upper end of the pressing cover plate 15. A plurality of sealing pressing springs 17 are fixedly connected between the lower inner wall of the pressing cover plate 15 and the upper end of the furnace mouth closing cover 12. A plurality of limiting sliding rods 18 are fixedly connected to the upper end of the furnace mouth closing cover 12.

[0057] In this embodiment: When the device is not started, the furnace mouth closing cover 12 is in a closed state. The pressing cover plate 15 applies pressure to the sealing pressing springs 17, pressing the furnace mouth closing cover 12 tightly against the upper opening of the intermediate frequency melting furnace 1 to ensure complete sealing. At this time, the upper limiting block 19 on the limiting sliding rod 18 is located at the upper limit position of the limiting chute 21.

[0058] Specifically, please refer to Figures 2 - 10 , an upper limiting block 19 and a lower limiting block 20 are fixedly connected to the circumferential surface of the limiting sliding rod 18. The upper limiting block 19 slides on the upper end of the limiting chute 21, and the lower limiting block 20 slides on the upper end of the limiting chute 21.

[0059] In this embodiment: The upper limiting block 19 and the lower limiting block 20 are fixed on the circumferential surface of the limiting sliding rod 18 to limit the up and down movement range of the furnace mouth closing cover 12. When the furnace mouth closing cover 12 is in a closed state, the upper limiting block 19 is located at the upper limit position of the limiting chute 21 to prevent the furnace mouth closing cover 12 from moving down excessively. When the furnace mouth closing cover 12 is in an open state, the lower limiting block 20 is located at the lower limit position of the limiting chute 21 to prevent the furnace mouth closing cover 12 from rising excessively.

[0060] Specifically, please refer to Figures 2 - 10 , a discharge driving rotating shaft 23 is fixedly connected to one side end of the intermediate frequency melting furnace 1. A rotating shaft support ring 24 is rotatably connected to the outer surface of the discharge driving rotating shaft 23. A driving motor 25 is fixedly connected to one side end of the rotating shaft support ring 24. The output end of the driving motor 25 is fixed to the discharge driving rotating shaft 23.

[0061] In this embodiment: The discharge driving rotating shaft 23 is connected to an external hydraulic lifting mechanism through the furnace lifting arm 26. The driving motor 25 drives the discharge driving rotating shaft 23 to rotate, causing the TB13 material melting furnace 10 to rotate around the rotating shaft support ring 24, and tilting the molten titanium alloy liquid through the discharge inclined opening 14 to ensure accurate pouring of the molten liquid into the mold.

[0062] Specifically, please refer to Figures 2 - 10 , a furnace lifting arm 26 is fixedly connected to one side end of the rotating shaft support ring 24. The furnace lifting arm 26 is connected to an external lifting mechanism.

[0063] In this embodiment: When not started, the smelting furnace body is in the basic position, ready to receive raw materials or start the heating process. When the position of the smelting furnace needs to be adjusted, the control system sends a signal to the external lifting mechanism, and the external lifting mechanism starts according to the instruction, pushing or pulling the furnace lifting arm 26, and then driving the rotating shaft support ring 24 and the intermediate frequency smelting furnace 1 connected thereto to move up and down together. This design enables flexible adjustment of the height of the smelting furnace even during the smelting process for discharging or feeding materials.

[0064] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A TB13 disk smelting process, characterized in that: include: S1. Load TB13 titanium alloy raw materials (such as scrap steel, alloy ingots) into the TB13 material melting furnace (10), with the raw material loading amount not exceeding 80% of the furnace volume. Align the TB13 material melting furnace (10) with the upper opening of the preheating sealing sleeve (7), and slowly lower it until it is in preliminary contact with the furnace support tube (13). Through the elastic force of the reset spring (6) of the sealing component, the spring reset push plate (5) pushes the blocking slide plate (4), and the preheating sealing sleeve (7) is pushed up to seal with the lower end of the preheating sealing ring (8), so as to close the upper opening of the medium frequency melting furnace (1), and use the residual heat in the medium frequency melting furnace (1) to keep the furnace body warm; S2, lowering the TB13 material melting furnace (10) along the inner wall of the preheating closed sleeve (7), and pressing the preheating closed sleeve (7) downward by the dead weight of the TB13 material melting furnace (10), so that an annular gap is formed between the preheating closed sleeve (7) and the preheating closed sleeve ring (8), releasing the preheating airflow in the medium frequency melting furnace (1) to the outer wall of the TB13 material melting furnace (10), and preliminarily preheating the TB13 material in the furnace; S3. When the preheating sealing sleeve (7) slides to the lowermost end, the spring reset push plate (5) is inserted into the medium frequency melting furnace (1). At the same time, the furnace mouth sealing cover (12) presses the upper end of the upper support ring (2) through the lower pressure cover plate (15) and the sealing lower pressure spring (17). The medium frequency electromagnetic coil (9) is started and first runs at low power (100-200kW) for 5 minutes. After the magnetic field is stabilized, it is increased to full power (200-500kW). The raw materials in the TB13 material melting furnace (10) are heated to a molten state by electromagnetic induction, and the duration is 40-60 minutes. S4, control the external lift to drive the furnace lifting arm (26) to fine-tune the height of the medium frequency melting furnace (1), so that the discharge bevel (14) is aligned with the external mold entrance, and the discharge drive shaft (23) is driven to rotate by the drive motor (25), so that the TB13 material melting furnace (10) is tilted, and the molten titanium alloy liquid flows into the external mold along the discharge bevel (14). S5. After the smelting is completed, the medium frequency electromagnetic coil (9) is closed, and then under the action of the reset spring (6), the sealing component pushes the preheating sealing sleeve (7) upward and resets, and the medium frequency smelting furnace (1) is reclosed, and the residual heat in the furnace is stored until the preheating stage of the next furnace, forming a heat recycling process.

2. A TB13 disk smelting process according to claim 1, characterized in that: The sealing components are provided with a plurality of groups, and each group of the sealing components comprises a sealing tube groove (3), a sealing slide plate (4), a spring return push plate (5), a return spring (6) and a closing groove (11); the sealing tube groove (3) is provided on the circumferential inner wall of the medium frequency melting furnace (1) and the upper support ring (2); the sealing slide plate (4) is slidably connected in the sealing tube groove (3); the spring return push plate (5) is fixedly connected to the upper end of the sealing slide plate (4); the closing groove (11) is provided at the upper end of the upper support ring (2); the spring return push plate (5) is slidably connected in the closing groove (11); and the return spring (6) is fixedly connected to the lower end of the spring return push plate (5) and the upper end of the medium frequency melting furnace (1).

3. A TB13 disk smelting process according to claim 1, characterized in that: The upper support ring (2) is fixedly connected to the upper end of the medium frequency melting furnace (1), the preheating sealing ring (8) is fixedly connected to the upper inner wall of the medium frequency melting furnace (1), the preheating sealing sleeve (7) is fixedly connected to the lower ends of a plurality of blocking slides (4), the medium frequency electromagnetic coil (9) is arranged in the medium frequency melting furnace (1), the preheating sealing sleeve (7) is made of gradient composite ceramic material, the lower end of the preheating sealing ring (8) matches the upper end of the preheating sealing sleeve (7), and the TB13 material melting furnace (10) is slidably connected in the preheating sealing sleeve (7).

4. A TB13 disk smelting process according to claim 2, characterized in that: The upper end of the TB13 material melting furnace (10) is fixedly connected to a furnace support pipe (13), and the upper end of the furnace support pipe (13) is fixedly connected to a furnace opening closing cover (12).

5. A TB13 disk smelting process according to claim 3, characterized in that: When the preheating sealing sleeve (7) slides to the lowermost end, the spring return push plate (5) is inserted into the medium frequency melting furnace (1), and the furnace mouth closing cover (12) closes the upper end of the upper support ring (2). The sliding stroke of the spring return push plate (5) in the closing groove (11) is monitored by a displacement sensor. When the stroke reaches a set value, the medium frequency electromagnetic coil (9) start signal is automatically triggered.

6. A TB13 disk smelting process according to claim 4, characterized in that: The upper end of the TB13 material melting furnace (10) is provided with an inclined discharge port (14), and the inclined discharge port (14) is used to tilt the titanium alloy melt.

7. A TB13 disk smelting process according to claim 5, characterized in that: The outer surface of the furnace mouth closing cover (12) is sleeved with a rubber heat-insulating sleeve (16), and the outer end of the furnace mouth closing cover (12) is provided with a lower pressing cover plate (15), and the furnace mouth closing cover (12) and the rubber heat-insulating sleeve (16) slide in the lower pressing cover plate (15).

8. A TB13 disk smelting process according to claim 6, characterized in that: A limiting slide groove (21) is provided at the upper end of the lower pressure cover plate (15); a plurality of sealing downward pressure springs (17) are fixedly connected to the lower inner wall of the lower pressure cover plate (15) and the upper end of the furnace mouth closing cover (12); and a plurality of limiting slide rods (18) are fixedly connected to the upper end of the furnace mouth closing cover (12).

9. A TB13 disk smelting process according to claim 7, characterized in that: An upper limit block (19) and a lower limit block (20) are fixedly connected to the circumferential surface of the limit slide rod (18); the upper limit block (19) slides on the upper end of the limit slide groove (21); and the lower limit block (20) slides on the upper end of the limit slide groove (21).

10. A TB13 disk smelting process according to claim 8, characterized in that: One side end of the medium frequency smelting furnace (1) is fixedly connected to a discharge drive shaft (23), the outer surface of the discharge drive shaft (23) is rotatably connected to a shaft support ring (24), one side end of the shaft support ring (24) is fixedly connected to a drive motor (25), the output end of the drive motor (25) is fixed to the discharge drive shaft (23), one side end of the shaft support ring (24) is fixedly connected to a furnace lifting arm (26), and the furnace lifting arm (26) is connected to an external lifting mechanism.

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