Smelting equipment for spaceflight-grade vanadium-aluminum intermediate alloy material and use method of smelting equipment

Abstract

The invention discloses aerospace-grade vanadium-aluminum intermediate alloy material smelting equipment and a using method thereof.The aerospace-grade vanadium-aluminum intermediate alloy material smelting equipment comprises a hot melting furnace body, the top port of the hot melting furnace body is fixedly in butt joint with a deslagging assembly, the top port of the deslagging assembly is covered with a sealing cover, a magnetic pole array rotor assembly is installed below the sealing cover, and the bottom of the hot melting furnace body is a hemispherical shell; a plurality of saddle-shaped coils which are arranged in an annular array are embedded in the hemispherical shell; and a liftable liquid level adjusting block is mounted below the magnetic pole array rotor assembly. The invention relates to the technical field of smelting equipment. According to the method, the problems that in an existing vanadium-aluminum smelting technology, stirring dead angles are generated due to insufficient stirring capacity, so that macroscopic segregation and microcosmic segregation of alloy components are caused, and the requirement of aerospace-level materials for extreme uniformity cannot be met are solved.

Description

Technical Field

[0001] This invention relates to the field of smelting equipment technology, and in particular to smelting equipment for aerospace-grade vanadium-aluminum master alloy materials and its usage method. Background Technology

[0002] In the smelting and preparation of aerospace-grade vanadium-aluminum master alloys, ensuring a high degree of uniformity in alloy composition is one of the core technical indicators. To overcome the tendency for compositional segregation caused by the significant density difference between vanadium and aluminum, mechanical stirring is often used in existing technologies as an important means to enhance melt mixing and promote element diffusion.

[0003] However, this traditional mechanical mixing method has a series of inherent defects that are difficult to overcome, which seriously restrict the improvement of the final product quality:

[0004] Introducing external contaminants impairs melt purity: Mechanical stirrers are typically made of high-temperature resistant ceramic materials such as zirconium oxide and silicon nitride. Under the harsh metallurgical environment of high temperature and high speed, the stirrer surface is continuously eroded and worn by the highly reactive vanadium-aluminum melt, inevitably leading to corrosion, dissolution, and even spalling. This results in ceramic particles being incorporated into the alloy melt. These foreign inclusions become sources of defects within the material, significantly deteriorating the alloy's mechanical properties, fatigue strength, and long-term service reliability, failing to meet the stringent purity requirements of aerospace materials.

[0005] Dead zones exist in the stirred flow field, limiting the improvement in uniformity: Mechanical stirrers are typically paddle-type structures, and their stirring effect is limited to the area near the paddles, resulting in a rapid decrease in flow field intensity from the paddles outwards. This leads to "stirring dead zones" at the bottom corners, the central core region, and areas far from the stirring axis of the molten pool. Denser vanadium elements will still settle and accumulate in these dead zone areas, making it impossible to fundamentally solve the problem of macroscopic and microscopic component segregation, and thus making it difficult to guarantee the uniformity of the alloy structure.

[0006] Poor equipment reliability and high maintenance costs: Mechanical agitators and their transmission systems operate in a high-temperature vacuum environment for extended periods, facing a series of engineering challenges such as insufficient high-temperature strength of materials, bearing lubrication failure, and complex sealing structures, resulting in a high equipment failure rate. Furthermore, damaged agitators require furnace shutdown and cooling before replacement, which not only leads to production interruptions and lengthy cycles but also significantly increases equipment maintenance and operating costs.

[0007] Therefore, although mechanical stirring improves the mixing effect of the melt to some extent, the core contradictions of "introducing contamination" and "uneven stirring" remain irreconcilable. Developing a new method that can achieve full-area, efficient, and non-contact stirring to completely replace traditional mechanical stirring has become an inevitable trend and an urgent need for preparing aerospace-grade vanadium-aluminum master alloys with ultra-high homogeneity and ultra-high purity. Summary of the Invention

[0008] To address the problem that existing vanadium-aluminum smelting technologies suffer from insufficient stirring capacity, resulting in stirring dead zones and macroscopic and microscopic segregation of alloy composition, which fails to meet the requirements for extreme uniformity in aerospace-grade materials, the present invention aims to provide aerospace-grade vanadium-aluminum master alloy smelting equipment and its usage method.

[0009] To achieve the above objectives, the present invention adopts the following technical solution: an aerospace-grade vanadium-aluminum intermediate alloy material smelting equipment, comprising a hot melt furnace body, a slag discharge assembly fixedly connected to the top port of the hot melt furnace body, a cover covering the top port of the slag discharge assembly, a magnetic pole array rotor assembly installed below the cover, a hemispherical shell at the bottom of the hot melt furnace body, and several saddle-shaped coils arranged in a ring array embedded inside the hemispherical shell; a liftable liquid level regulating block is installed below the magnetic pole array rotor assembly;

[0010] The main magnetic field generated by the magnetic pole array rotor assembly is coupled with the modulated magnetic field generated by several saddle coils. They are vector superimposed in the hot melt furnace body to form a three-dimensional electromagnetic field. This three-dimensional electromagnetic field performs non-contact, global stirring of the vanadium-aluminum melt in the hot melt furnace body through the induced Lorentz force, and generates vertical vortices that promote the vertical convection of the melt in the lower part of the hot melt furnace body.

[0011] Preferably, it also includes a U-shaped support, in which a first motor is fixedly installed. The output end of the first motor is shaft-connected to a first gear. The first gear meshes with an arc-shaped rack fixedly installed on the outer wall of the hemispherical shell of the hot melt furnace body. The hot melt furnace body is rotatably mounted on the inner wall of the U-shaped support via a pin. The axis of the pin passes horizontally through the center of the hemispherical shell of the hot melt furnace body. The inner wall of the hot melt furnace body is inlaid with resistance heating blocks, which are mainly used for smelting.

[0012] Preferably, a linear motor that drives vertically is fixedly installed on the outer wall of the hot melt furnace body, and a rectangular plate is fixedly installed on the transmission platform of the linear motor, with the bottom of the rectangular plate being fixedly connected to the top surface of the cover.

[0013] Preferably, the magnetic pole array rotor assembly includes a sleeve that rotates vertically through the center of the cover. A turntable is fixedly sleeved on the outer wall of the sleeve near the bottom. A heat insulation ring is fixedly connected to the bottom of the turntable. Several electromagnetic pole posts arranged in a ring array are fixedly embedded inside the heat insulation ring. The N / S polarity of the bottom ends of the several electromagnetic pole posts is alternately arranged. A second gear is fixedly sleeved on the outer wall of the sleeve above the cover. A second motor is fixedly mounted on the rectangular plate. A third gear that meshes with the second gear is shaft-connected to the output end of the second motor.

[0014] Preferably, an inner cylinder is rotatably sleeved on the inner wall of the sleeve, and a first electric push rod is fixedly installed on the top of the inner cylinder. The telescopic rod of the first electric push rod is slidably sleeved on the inner wall of the inner cylinder, and the bottom of the telescopic end is fixedly connected to the top surface of the liquid level adjusting block. The first electric push rod is fixedly installed on a rectangular plate, the bottom of the liquid level adjusting block is spherical, and a resistance heating block is embedded in the outer wall of the liquid level adjusting block.

[0015] Preferably, a cavity is provided in the hemispherical shell at the bottom of the hot melt furnace body, and a saddle-shaped coil is attached to the curved surface of the cavity. The saddle-shaped coil is embedded in the cavity in a circumferentially uniform manner, and its opening plane faces the central axis of the hot melt furnace body, so as to generate a modulated magnetic field distributed along the axis.

[0016] Preferably, the slag discharge assembly includes a first cylindrical shell, a second cylindrical shell, and a conical shell, which are coaxially and sequentially fixedly connected from top to bottom. The outer diameter of the first cylindrical shell is smaller than that of the second cylindrical shell. The large-diameter port of the conical shell is fixedly connected to the bottom port of the second cylindrical shell, and the small-diameter port of the conical shell is fixedly connected to the top port of the hot-melting furnace body. The bottom surface of the cover fits over the top port of the first cylindrical shell. A rotating ring is rotatably sleeved on the inner wall of the second cylindrical shell. A first annular groove is formed on the upper inner surface of the second cylindrical shell near the inner wall, and a second annular groove is formed on the lower inner surface near the inner wall. The inner walls of the upper and lower ends of the rotating ring are rotatably sleeved with the inner walls of the first and second annular grooves. A gear ring is fixedly connected to the end face of the rotating ring located inside the second annular groove. A plurality of slag discharge ports arranged in an annular array are formed on the outer wall of the rotating ring. A guide plate is fixedly connected to one side of the inner wall of several slag discharge ports. The guide plate extends to the inner wall of the rotating ring and is inclined relative to the radial direction of the rotating ring. A slag discharge port is opened on the outer wall of the second cylindrical shell. The outer wall of the rotating ring covers the slag discharge port for sealing. An annular filter cylinder is fixedly sleeved on the bottom port of the conical shell. An annular filter plate is fixedly connected to the top port of the annular filter cylinder and the inner wall of the second cylindrical shell near the bottom. The bottom of the guide plate and the top surface of the annular filter plate are slidably connected. A third motor is fixedly installed on the outer wall of the second cylindrical shell. A fourth gear is shaft-connected to the output end of the third motor. A through hole is opened on the outer wall of the second cylindrical shell located on the side of the gear ring. The fourth gear moves through the through hole and meshes with the gear ring. Resistance heating blocks are embedded in the inner walls of the first cylindrical shell and the conical shell to prevent the alloy liquid from sticking when cooling.

[0017] Preferably, a lifting cylinder is slidably fitted onto the inner wall of the first cylindrical shell, and a second electric push rod is fixedly installed on the top surface of the cover. The telescopic end of the second electric push rod is fixedly connected to the top port of the lifting cylinder. A liquid outlet is opened on the outer wall of the first cylindrical shell, and the lifting cylinder covers the inner port of the liquid outlet for sealing. The outer wall of the lifting cylinder is also slidably fitted with the inner wall of the hot melt furnace body. The height of the lifting cylinder is greater than the sum of the heights of the second cylindrical shell and the conical shell. The lifting cylinder is made of heat-conducting material, and a resistance heating block is embedded inside it to prevent the alloy liquid from sticking together when cooling.

[0018] The operating method of aerospace-grade vanadium-aluminum master alloy smelting equipment includes the following steps:

[0019] S1, open the cover from the top port of the slag discharge assembly, fill the vanadium-aluminum intermediate alloy material into the hot melt furnace body, and then close the cover;

[0020] S2, the hot melt furnace body is heated to melt the vanadium-aluminum intermediate alloy material into an alloy liquid;

[0021] S3, the magnetic pole array rotor assembly rotates, and the main magnetic field generated by the magnetic pole array rotor assembly is coupled with the modulated magnetic field generated by several saddle coils. They are vector superimposed in the hot melt furnace body to form a three-dimensional electromagnetic field. This three-dimensional electromagnetic field performs non-contact, global stirring of the vanadium-aluminum melt in the hot melt furnace body through the induced Lorentz force, and generates vertical vortices that promote the vertical convection of the melt in the lower part of the hot melt furnace body, so as to achieve full melting. At the same time, the slag gold in the melt floats fully on the upper layer of the melt.

[0022] S4, the liquid level adjustment block descends, its bottom is submerged below the liquid surface, and the liquid level rises to the slag discharge component;

[0023] S5, the magnetic pole array rotor assembly continues to rotate. Under centrifugal force, the floating slag and gold enter the slag discharge assembly, the liquid level adjustment block is raised and the liquid level drops, the slag and gold remain in the slag discharge assembly, and then the slag and gold are discharged from the slag discharge assembly.

[0024] Compared with the prior art, the beneficial effects achieved by the present invention are as follows:

[0025] 1. This invention generates a three-dimensional electromagnetic field with controllable spatial structure through the coordinated operation of the magnetic pole array rotor assembly and the bottom saddle-shaped coil array. The Lorentz force induced by this magnetic field not only drives the melt to rotate, but more importantly, it generates a strong vertical component force, forming an up-and-down convection vortex that runs through the entire molten pool, achieving full-domain stirring. This ensures that elements with large density differences, such as vanadium and aluminum, achieve full diffusion and uniform mixing at both the macroscopic and microscopic levels, meeting the stringent consistency requirements of aerospace-grade materials.

[0026] 2. In this invention, the gold in the slag can be extracted more efficiently and fully through the vortex of upward and downward convection, and float to the upper layer of the molten liquid.

[0027] 3. In this invention, the liquid level is adjusted by raising and lowering the liquid level adjustment block, and under the centrifugal stirring effect of the three-dimensional electromagnetic field, the scum is gathered and guided to the annular filter plate; then, the centrifugal effect of the rotating ring is used to quickly throw out the filtered waste residue through the guide plate.

[0028] 4. This invention integrates smelting, stirring, slag removal, and pouring functions into a single device, eliminating the need for furnace shutdown for cooling and manual slag removal, thus improving production efficiency.

[0029] 5. This invention achieves zero contact with the melt through the entire electromagnetic stirring process, completely eliminating the risk of introducing foreign inclusions due to the corrosion or shedding of the stirrer material, greatly improving the purity of the melt, and laying a solid foundation for the alloy to obtain excellent mechanical properties and high-temperature stability. Attached Figure Description

[0030] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0031] Figure 1 This is a schematic cross-sectional view of the present invention;

[0032] Figure 2 This is a schematic diagram of the slag discharge assembly of the present invention;

[0033] Figure 3 This is a schematic diagram of the material guide plate arrangement of the present invention;

[0034] Figure 4 This is a cross-sectional structural schematic diagram of the magnetic pole array rotor assembly of the present invention;

[0035] Figure 5 This is a bottom view schematic diagram of the saddle-shaped coil arrangement of the present invention.

[0036] In the diagram: 1. Hot melt furnace body; 2. Slag discharge assembly; 201. First cylindrical shell; 202. Second cylindrical shell; 203. Conical shell; 204. Rotary ring; 205. Slag discharge port; 206. Guide plate; 207. Gear ring; 208. Slag outlet; 209. Annular filter cylinder; 210. Annular filter plate; 211. Third motor; 212. Fourth gear; 213. Liquid outlet; 3. Cover; 4. Magnetic pole array rotor assembly; 01. Sleeve; 402. Turntable; 403. Heat insulation ring; 404. Electromagnetic pole; 405. Second gear; 406. Second motor; 407. Third gear; 5. Saddle coil; 6. Liquid level adjustment block; 601. Inner cylinder; 602. First electric push rod; 7. U-shaped support; 8. First motor; 9. First gear; 10. Arc rack; 11. Linear motor; 12. Rectangular plate; 13. Lifting cylinder; 14. Second electric push rod. Detailed Implementation

[0037] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

[0038] Please see Figures 1 to 5 It should be understood that the structures, proportions, sizes, etc., illustrated in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and to facilitate understanding and reading. They are not intended to limit the scope of the invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of the invention, should still fall within the scope of the technical content disclosed in this invention. Furthermore, the terms such as "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and not intended to limit the scope of the invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention's implementation.

[0039] This invention provides a technical solution: an aerospace-grade vanadium-aluminum master alloy smelting equipment. The aerospace-grade vanadium-aluminum master alloy smelting equipment of this invention mainly includes a hot-melt furnace body 1, a slag discharge assembly 2, a cover 3, a magnetic pole array rotor assembly 4, a saddle-shaped coil 5, a liquid level adjusting block 6, a U-shaped support 7, a linear motor 11, a lifting cylinder 13, and various drive and transmission components. These components work together to achieve efficient smelting of the alloy material, slag-metal separation, and safe liquid pouring. The specific structure is as follows:

[0040] The hot-melting furnace body 1 is the core cavity for the melting operation. Its bottom is designed as a hemispherical shell, which optimizes the electromagnetic field distribution and the convection effect of the molten alloy. Several saddle-shaped coils 5 are embedded in a ring array inside the hemispherical shell at the bottom of the hot-melting furnace body 1. A cavity is formed in the hemispherical shell at the bottom of the hot-melting furnace body 1, and the saddle-shaped coils 5 are fitted onto the curved surface of the cavity and embedded in the cavity in a circumferentially uniform manner. Their opening planes face the central axis of the hot-melting furnace body 1, used to generate a modulated magnetic field distributed axially. Resistance heating blocks are embedded in the inner wall of the hot-melting furnace body 1 to provide a stable heat source for melting the alloy material, while preventing the molten alloy from cooling and sticking together on the inner wall of the furnace body.

[0041] The slag discharge assembly 2 is fixedly connected to the top port of the hot-melt furnace body 1 to achieve slag-metal separation and waste slag discharge. Specifically, it includes a first cylindrical shell 201, a second cylindrical shell 202, and a conical shell 203, which are fixedly connected coaxially from top to bottom. The outer diameter of the first cylindrical shell 201 is smaller than the outer diameter of the second cylindrical shell 202. The large-diameter port of the conical shell 203 is fixedly connected to the bottom port of the second cylindrical shell 202, and the small-diameter port of the conical shell 203 is fixedly connected to the top port of the hot-melt furnace body 1.

[0042] A rotating ring 204 is rotatably sleeved on the inner wall of the second cylindrical shell 202. A first annular groove is formed on the upper inner surface of the second cylindrical shell 202 near the inner wall, and a second annular groove is formed on the lower inner surface near the inner wall. The inner walls of the upper and lower ends of the rotating ring 204 are rotatably sleeved with the inner walls of the first and second annular grooves, ensuring stable rotation of the rotating ring 204. A gear ring 207 is fixedly connected to the end face of the rotating ring 204 located inside the second annular groove. Several slag discharge ports 205 are arranged in a circular array on the outer wall of the rotating ring 204. A guide plate 206 is fixedly connected to the inner wall of one side of each slag discharge port 205. The guide plate 206 extends to the inner wall of the rotating ring 204 and is inclined relative to the radial direction of the rotating ring 204, facilitating the guidance of waste slag into the slag discharge ports 205.

[0043] The outer wall of the second cylindrical shell 202 is provided with a slag outlet 208. The outer wall of the rotating ring 204 normally covers the slag outlet 208 to achieve a seal, thereby preventing the alloy liquid from leaking or the heat from being lost during the smelting process.

[0044] An annular filter cylinder 209 is fixedly sleeved on the bottom port of the conical shell 203. An annular filter plate 210 is fixedly connected to the top port of the annular filter cylinder 209 and the inner wall of the second cylindrical shell 202 near the bottom. The bottom of the guide plate 206 is slidably connected to the top surface of the annular filter plate 210. The annular filter plate 210 is used to intercept waste residue and achieve preliminary separation of slag and gold.

[0045] A third motor 211 is fixedly installed on the outer wall of the second cylindrical housing 202. The output end of the third motor 211 is connected to a fourth gear 212. A through hole is opened on the outer wall of the second cylindrical housing 202 located on the side of the gear ring 207. The fourth gear 212 moves through the through hole and meshes with the gear ring 207. The third motor 211 drives the rotating ring 204 to rotate, thus completing the waste discharge action.

[0046] The inner walls of the first cylindrical shell 201 and the conical shell 203 are both inlaid with resistance heating blocks to prevent the alloy liquid from cooling and sticking inside the slag discharge assembly 2.

[0047] The inner wall of the first cylindrical shell 201 is slidably fitted with a lifting cylinder 13. The outer wall of the first cylindrical shell 201 is provided with a liquid pouring port 213. Under normal conditions, the lifting cylinder 13 covers the inner port of the liquid pouring port 213 to achieve a seal. The lifting cylinder 13 is made of heat-conducting material and has a resistance heating block embedded inside it to further prevent the alloy liquid from cooling and sticking. At the same time, the height of the lifting cylinder 13 is greater than the sum of the heights of the second cylindrical shell 202 and the conical shell 203 to ensure the sealing effect when pouring liquid.

[0048] The cover 3 is fitted onto the top port of the first cylindrical shell 201 in the slag discharge assembly 2 to seal the melting chamber. A linear motor 11, which drives vertically, is fixedly installed on the outer wall of the hot melt furnace body 1. A rectangular plate 12 is fixedly installed on the transmission platform of the linear motor 11. The bottom of the rectangular plate 12 is fixedly connected to the top surface of the cover 3. The cover 3 is driven to rise and fall by the linear motor 11 to open and close the melting chamber. A second electric push rod 14 is fixedly installed on the top surface of the cover 3. The telescopic end of the second electric push rod 14 is fixedly connected to the top port of the lifting cylinder 13. The lifting cylinder 13 is driven to rise and fall by the second electric push rod 14 to control the opening and closing of the liquid discharge port 213.

[0049] The magnetic pole array rotor assembly 4 is installed below the cover 3 to generate the main magnetic field. Specifically, it includes a sleeve 401 vertically rotating and inserted through the center of the cover 3. A turntable 402 is fixedly fitted onto the outer wall of the sleeve 401 near its bottom. A heat insulation ring 403 is fixedly connected to the bottom of the turntable 402. Several electromagnetic pole posts 404 arranged in a ring array are fixedly embedded inside the heat insulation ring 403. The N / S polarities of the bottom ends of the electromagnetic pole posts 404 are alternately arranged to ensure the uniformity of the main magnetic field. A second gear 405 is fixedly fitted onto the outer wall of the sleeve 401 above the cover 3. A second motor 406 is fixedly installed on the rectangular plate 12. The output end of the second motor 406 is shaft-connected to a third gear 407 that meshes with the second gear 405. The second motor 406 drives the sleeve 401 to rotate, causing the electromagnetic pole posts 404 to generate a rotating main magnetic field.

[0050] A liquid level adjusting block 6 is installed below the magnetic pole array rotor assembly 4 to adjust the liquid level of the alloy liquid and assist in slag-gold separation. An inner cylinder 601 is rotatably fitted onto the inner wall of the sleeve 401. A first electric push rod 602 is fixedly installed on the top of the inner cylinder 601. The telescopic rod of the first electric push rod 602 is slidably fitted onto the inner wall of the inner cylinder 601, and the bottom of the telescopic end is fixedly connected to the top surface of the liquid level adjusting block 6. The first electric push rod 602 is fixedly installed on the rectangular plate 12, and the liquid level adjusting block 6 is driven to rise and fall by the first electric push rod 602. The bottom of the liquid level adjusting block 6 is spherical to reduce obstruction to the flow of the alloy liquid, and a resistance heating block is embedded in its outer wall to prevent the alloy liquid from sticking together when cooling.

[0051] The equipment also includes a U-shaped support 7, inside which a first motor 8 is fixedly installed. The output end of the first motor 8 is shaft-connected to a first gear 9. The first gear 9 meshes with an arc-shaped rack 10 fixedly installed on the outer wall of the hemispherical shell of the hot melt furnace body 1. The hot melt furnace body 1 is rotatably mounted on the inner wall of the U-shaped support 7 via a pin. The axis of the pin passes horizontally through the center of the hemispherical shell of the hot melt furnace body 1. The first motor 8 drives the hot melt furnace body 1 to tilt around the pin, which, in conjunction with the pouring port 213, completes the pouring operation of the alloy melt.

[0052] The rotating electromagnetic pole column 404 in the magnetic pole array rotor assembly 4 generates the main magnetic field, while several saddle-shaped coils 5 at the bottom of the hot melt furnace body 1 generate the modulated magnetic field. The main magnetic field and the modulated magnetic field are coupled to each other, forming a three-dimensional electromagnetic field through vector superposition within the hot melt furnace body 1. This three-dimensional electromagnetic field performs non-contact, full-area stirring of the vanadium-aluminum melt within the hot melt furnace body 1 through the induced Lorentz force, avoiding contamination caused by contact stirring. At the same time, it generates vertical vortices that promote vertical convection of the melt in the lower part of the hot melt furnace body 1, ensuring uniform alloy composition and improving melting quality.

[0053] The device uses a resistance heating method, which does not generate external electric or magnetic fields, thus avoiding interference with the three-dimensional electromagnetic field stirring.

[0054] The smelting operation is carried out using the aforementioned aerospace-grade vanadium-aluminum master alloy material smelting equipment. The specific steps are as follows:

[0055] Raw material loading: The linear motor 11 lifts the rectangular plate 12 through its transmission platform, which in turn drives the cover 3 to rise and open the cover 3 from the top port of the slag discharge assembly 2. At the same time, the lifting cylinder 13 rises synchronously with the cover 3 and is pulled out from the inner wall of the first cylindrical shell 201. The vanadium-aluminum intermediate alloy material is filled into the hot melt furnace body 1. Then the linear motor 11 drives the cover 3 to fall and close. The lifting cylinder 13 falls synchronously to cover the inner port of the liquid discharge port 213 and seals it.

[0056] Heating and smelting: Start all resistance heating blocks in the equipment, heat up the hot melt furnace body 1 and related components, and melt the vanadium-aluminum intermediate alloy material into an alloy liquid.

[0057] Electromagnetic field stirring: The second motor 406 is started, and the second motor 406 transmits power to the second gear 405, sleeve 401 and turntable 402 in sequence through the third gear 407, which drives the heat insulation ring 403 and several electromagnetic pole posts 404 with alternating N / S polarities to rotate, so that the magnetic pole array rotor assembly 4 generates a rotating main magnetic field; the saddle coil 5 is energized to generate a modulated magnetic field, and the main magnetic field and the modulated magnetic field are coupled to form a three-dimensional electromagnetic field, which stirs the vanadium-aluminum melt in a non-contact, all-area manner through the Lorentz force, and generates vertical vortices to promote the upward and downward convection of the melt, so as to achieve full melting. At the same time, the slag gold in the melt floats to the upper layer of the melt under the stirring action.

[0058] Liquid level adjustment: Activate the first electric push rod 602 to drive the liquid level adjustment block 6 to descend, with its bottom submerged below the surface of the alloy liquid. This forces the liquid level to rise to between the bottom port of the annular filter plate 210 and the first cylindrical shell 201. At the same time, the floating slag gold is squeezed to one circumference of the liquid level adjustment block 6, preparing for subsequent slag gold separation.

[0059] Waste discharge: The magnetic pole array rotor assembly 4 rotates continuously. Under centrifugal force, the slag and gold around the liquid level adjustment block 6 enter the area above the annular filter plate 210. The first electric push rod 602 drives the liquid level adjustment block 6 to rise, the liquid level of the alloy liquid drops, and the slag and gold are intercepted on the annular filter plate 210. The third motor 211 is started. The third motor 211 drives the gear ring 207 to rotate through the fourth gear 212, which drives the rotating ring 204 to rotate synchronously. The guide plate 206 guides the slag and gold on the annular filter plate 210 to the slag discharge port 205. When the slag discharge port 205 rotates to the slag outlet 208, the slag and gold are thrown out from the slag outlet 208 under the action of centrifugal force. After the waste is completely discharged, the third motor 211 drives the rotating ring 204 to reset. The outer wall of the rotating ring 204 covers the slag outlet 208 to seal it. The equipment continues to heat and melt the liquid to ensure the quality of the alloy liquid.

[0060] Alloy liquid pouring: The second electric push rod 14 is activated, driving the lifting cylinder 13 to descend. The lifting cylinder 13 seals the space in the second cylindrical shell 202 and the conical shell 203, while the liquid pouring port 213 is opened. The first motor 8 is activated, and the first motor 8 drives the arc rack 10 through the first gear 9, causing the hot melt furnace body 1 to tilt towards the liquid pouring port 213, and the alloy liquid is poured out from the liquid pouring port 213 for use.

[0061] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A space-grade vanadium-aluminum master alloy material smelting device, comprising a hot smelting furnace body (1), characterized in that: The top port of the hot melting furnace body (1) is fixedly connected with a slag discharge assembly (2), the top port of the slag discharge assembly (2) is covered with a cover (3), a magnetic pole array rotor assembly (4) is installed below the cover (3), the bottom of the hot melting furnace body (1) is provided with a hemispherical shell, and a plurality of saddle-shaped coils (5) are inlaid in the hemispherical shell in an annular array; a liftable liquid level adjusting block (6) is installed below the magnetic pole array rotor assembly (4). ​ The main magnetic field generated by the magnetic pole array rotor assembly (4) and the modulated magnetic field generated by the plurality of saddle-shaped coils (5) are coupled with each other, are vectorially superposed in the hot melting furnace body (1), and jointly form a three-dimensional electromagnetic field; the three-dimensional electromagnetic field implements non-contact and global stirring on the vanadium-aluminum melt in the hot melting furnace body (1) through induced Lorentz force, and generates a vertical vortex that promotes up-down convection of the melt in the lower part of the hot melting furnace body (1).

2. The space-grade vanadium-aluminum master alloy material melting apparatus according to claim 1, characterized in that: A U-shaped support (7) is further included, a first motor (8) is fixedly installed in the U-shaped support (7), a first gear (9) is connected with the output shaft of the first motor (8), the first gear (9) is engaged with an arc-shaped rack (10) fixedly installed on the outer wall of the hemispherical shell of the hot melting furnace body (1), and the hot melting furnace body (1) is rotatably installed on the inner side wall of the U-shaped support (7) through a pin shaft, the axis of the pin shaft horizontally passes through the center of the hemispherical shell of the hot melting furnace body (1), and a resistance heating block is inlaid in the inner wall of the hot melting furnace body (1) and is mainly used for smelting.

3. The space-grade vanadium-aluminum master alloy material melting apparatus according to claim 2, characterized in that: A linear motor (11) that drives in the vertical direction is fixedly installed on the outer wall of the hot melting furnace body (1), a rectangular plate (12) is fixedly installed on the driving table of the linear motor (11), and the bottom of the rectangular plate (12) is fixedly connected with the top surface of the cover (3).

4. The space-grade vanadium-aluminum master alloy material melting apparatus of claim 3, wherein: The magnetic pole array rotor assembly (4) comprises a sleeve (401) that is rotatably penetrated at the center of the cover (3), a turntable (402) is fixedly sleeved with the outer wall close to the bottom of the sleeve (401), a heat insulation ring (403) is fixedly connected with the bottom of the turntable (402), a plurality of electromagnetic pole columns (404) are fixedly inlaid in the heat insulation ring (403) in an annular array, the N / S polarity of the bottom ends of the plurality of electromagnetic pole columns (404) is alternately arranged, a second gear (405) is fixedly sleeved with the outer wall above the sleeve (401), a second motor (406) is fixedly installed on the rectangular plate (12), and the output shaft of the second motor (406) is connected with a third gear (407) engaged with the second gear (405).

5. The space-grade vanadium-aluminum master alloy material melting apparatus of claim 4, wherein: The inner wall of the sleeve (401) is rotationally sleeved with an inner cylinder (601), the top of the inner cylinder (601) is fixedly installed with a first electric push rod (602), the telescopic rod of the first electric push rod (602) is slidably sleeved with the inner wall of the inner cylinder (601), and the bottom of the telescopic end is fixedly connected with the top surface of a liquid level adjusting block (6); the first electric push rod (602) is fixedly installed on a rectangular plate (12), the bottom of the liquid level adjusting block (6) is provided with a spherical surface, and the outer wall of the liquid level adjusting block (6) is embedded with an electric resistance heating block.

6. The space-grade vanadium-aluminum master alloy material melting apparatus of claim 1, wherein: A cavity is arranged in the hemispherical shell at the bottom of the hot melting furnace body (1), the saddle-shaped coil (5) is attached to the curved surface of the cavity, the saddle-shaped coil is embedded in the cavity in a circumferentially uniform distribution manner, and the opening plane thereof faces the central axis of the hot melting furnace body (1), for generating a modulated magnetic field distributed along the axial direction.

7. The space-grade vanadium-aluminum master alloy material melting apparatus of claim 1, wherein: The slag discharge assembly (2) comprises a first cylindrical shell (201), a second cylindrical shell (202) and a conical shell (203) fixed and connected in sequence from top to bottom, the outer diameter of the first cylindrical shell (201) is smaller than the outer diameter of the second cylindrical shell (202), the large diameter end of the conical shell (203) is fixed and connected with the bottom port of the second cylindrical shell (202), the small diameter end of the conical shell (203) is fixed and connected with the top port of the hot melting furnace body (1), the bottom surface of the cover (3) covers the top port of the first cylindrical shell (201), the inner wall of the second cylindrical shell (202) is rotatably sleeved with a rotating ring (204), the first annular groove is arranged on the inner upper end surface close to the inner wall of the second cylindrical shell (202), and the second annular groove is arranged on the inner lower end surface close to the inner wall of the second cylindrical shell (202); the inner wall of the rotating ring (204) at the upper and lower ends is rotatably sleeved with the inner wall of the first annular groove and the second annular groove, the end surface of the rotating ring (204) in the second annular groove is fixedly connected with a gear ring (207), the outer wall of the rotating ring (204) is provided with a plurality of slag discharge ports (205) arranged in an annular array, one side of the inner wall of the plurality of slag discharge ports (205) is fixedly connected with a guide plate (206), the guide plate (206) extends to the inner wall of the rotating ring (204), and the radial direction of the guide plate (206) with respect to the rotating ring (204) is inclined; the outer wall of the second cylindrical shell (202) is provided with a slag discharge port (208), the outer wall of the rotating ring (204) covers the slag discharge port (208) for sealing; the bottom port of the conical shell (203) is fixedly sleeved with an annular filter cylinder (209) upwards, the top port of the annular filter cylinder (209) and the inner wall close to the bottom of the second cylindrical shell (202) are fixedly connected with an annular filter plate (210), the bottom of the guide plate (206) and the top surface of the annular filter plate (210) are slidingly connected; the outer wall of the second cylindrical shell (202) is fixedly installed with a third motor (211), the output shaft of the third motor (211) is connected with a fourth gear (212), the outer wall of the second cylindrical shell (202) on the side of the gear ring (207) is provided with a through hole, the fourth gear (212) passes through the through hole and engages with the gear ring (207), and the inner walls of the first cylindrical shell (201) and the conical shell (203) are embedded with resistance heating blocks to avoid alloy liquid cooling and adhesion.

8. The space-grade vanadium-aluminum master alloy material melting apparatus of claim 7, wherein: The inner wall of the first cylindrical shell (201) is sleeved with a lifting cylinder (13), the top surface of the cover (3) is fixedly installed with a second electric push rod (14), the telescopic end of the second electric push rod (14) is fixedly connected with the top port of the lifting cylinder (13), the outer wall of the first cylindrical shell (201) is provided with a pouring opening (213), the lifting cylinder (13) covers the inner side port of the pouring opening (213) and is used for sealing; the outer wall of the lifting cylinder (13) is also in sliding fit with the inner wall of the hot melting furnace body (1), the height of the lifting cylinder (13) is greater than the sum of the heights of the second cylindrical shell (202) and the conical shell (203); the lifting cylinder (13) is made of heat-conducting material and is embedded with a resistance heating block inside, so that the alloy liquid is prevented from being cooled and adhered.

9. The method of using a space-grade vanadium-aluminum master alloy material melting apparatus, characterized in that, The aerospace-grade vanadium-aluminum intermediate alloy material smelting equipment of any one of claims 1-8 comprises the following steps: S1, opening the cover (3) from the top port of the slag discharge assembly (2), filling the vanadium-aluminum intermediate alloy material into the hot melting furnace body (1), and then closing the cover (3); S2, heating the hot melting furnace body (1) to smelt the vanadium-aluminum intermediate alloy material into alloy liquid; S3, rotating the magnetic pole array rotor assembly (4), the main magnetic field generated by the magnetic pole array rotor assembly (4) and the modulated magnetic field generated by the plurality of saddle-shaped coils (5) are coupled with each other, and are vector superimposed in the hot melting furnace body (1) to form a three-dimensional electromagnetic field; the three-dimensional electromagnetic field implements non-contact and full-domain stirring on the vanadium-aluminum melt in the hot melting furnace body (1) through induced Lorentz force, and generates a vertical vortex that promotes the up-down convection of the lower melt in the hot melting furnace body (1), so that the vanadium-aluminum melt is fully smelted, and the slag and the gold in the melt are fully floated on the upper layer of the melt; S4, lowering the liquid level adjusting block (6), the bottom of which is immersed below the liquid level, and the liquid level is raised to the position of the slag discharge assembly (2); S5, continuously rotating the magnetic pole array rotor assembly (4), under the centrifugal action, the floated slag and gold enter the slag discharge assembly (2), the liquid level of the liquid level adjusting block (6) is lowered, the slag and gold are left in the slag discharge assembly (2), and then the slag and gold are discharged from the slag discharge assembly (2).

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