Electromagnetic thermal field vacuum melting furnace for coupling high-temperature melting and electromagnetic stirring of multi-component alloy

Abstract

The utility model discloses an electromagnetic thermal field vacuum melting furnace for high-temperature melting coupling electromagnetic stirring of multi-component alloy, which has the melting temperature of 1800 DEG C. The electromagnetic thermal field vacuum melting furnace comprises a vacuum furnace body, a vacuum system, a medium-frequency induction heating component, a power-frequency electromagnetic stirrer, a melting crucible, a solidification water-cooling copper crucible, a mechanical stirrer, a vacuum feeding device and a dumping device. The vacuum furnace body is communicated with a vacuum system; a smelting crucible is arranged in the vacuum furnace body; and medium-frequency induction heating and power-frequency electromagnetic stirring are arranged on the outer side. And the melt subjected to high-temperature smelting and electromagnetic stirring can be poured into a solidification water-cooling copper crucible. And mechanical stirring and vacuum feeding can be applied. According to the uniform electromagnetic thermal field vacuum melting furnace for high-temperature melting and electromagnetic stirring of the multi-component alloy, the industrial frequency electromagnetic stirrer and the mechanical stirring assembly are arranged, so that the alloy in the melting crucible can be stirred, and alloy components are fully fused into a base body at a high temperature and are uniformly mixed. The equipment can be used for preparing semiconductors, solid hydrogen storage alloys and bulk amorphous materials.

Description

Technical Field

[0001] The utility model relates to the field of smelting equipment for special multi-component alloys, in particular to a homogenized electromagnetic heat field vacuum smelting furnace for high-temperature smelting of multi-component alloys and simultaneous coupling with electromagnetic stirring. Background Art

[0002] Vacuum melting furnace is mainly used for melting alloy materials (such as semiconductor alloys, hydrogen storage alloys, nickel-based alloys, copper-based alloys, aluminum-based alloys, titanium-based alloys, nickel-cobalt alloys, rare earth neodymium iron boron, etc.) under vacuum or protective atmosphere conditions. It can also be used for vacuum refining and precision casting of alloy steel.

[0003] The patent with publication number CN1595036A discloses a vacuum melting furnace, which includes a melting chamber, a crucible, a mold cavity, a medium vacuum gauge, a low vacuum gauge, a high vacuum valve, a front vacuum pump, a low vacuum valve, a protective gas source and a heating power supply. The vacuum melting furnace also includes a traction molecular pump, the air inlet of the traction molecular pump is connected to the high vacuum valve, and the low vacuum gauge and the low vacuum valve are respectively connected to the exhaust port of the traction molecular pump. A dust blocker, a partial pressure monitor and an active absorption material auxiliary evaporation source are added between the traction molecular pump bearing and the exhaust channel. The vacuum melting furnace of the present invention is particularly suitable for the melting of easily oxidizable metal materials and alloys, and is particularly suitable for the melting of neodymium iron boron permanent magnet alloys. The vacuum melting furnace of the present invention has a simple structure, can reduce the exhaust time and save the exhaust energy consumption, improve production efficiency, and improve the quality of the smelted products.

[0004] The existing vacuum melting furnace cannot fully stir when melting multi-component alloys at high temperature, and the temperature field is uneven, resulting in uneven alloy composition, high gas content, inability to form effective alloy phases, inability to prepare amorphous structures, and high energy consumption. Therefore, there is an urgent need for an electromagnetic heat field vacuum melting furnace for high-temperature melting of multi-component alloys coupled with electromagnetic stirring. Summary of the invention

[0005] The purpose of the present invention is to provide an electromagnetic thermal field vacuum melting furnace for high-temperature melting of multi-component alloys coupled with electromagnetic stirring to solve the problems existing in the above-mentioned prior art, make the alloy composition and structure uniform, reduce the gas content, form an effective phase, prepare an amorphous structure, and reduce energy consumption.

[0006] To achieve the above purpose, the utility model provides the following solutions:

[0007] The utility model provides an electromagnetic thermal field vacuum melting furnace for high-temperature melting of multi-element alloy coupled with electromagnetic stirring, which comprises a vacuum furnace body, a vacuum system, an intermediate frequency induction heating component, a power frequency electromagnetic stirrer, a melting crucible, a solidification water-cooled copper crucible, a mechanical stirrer, a vacuum feeding and pouring device; the vacuum furnace body is communicated with the vacuum system, and the vacuum system is used for pumping vacuum or filling protective gas for the vacuum furnace body; the melting crucible is arranged in the vacuum furnace body; the intermediate frequency induction heating component and the power frequency electromagnetic stirrer are arranged outside the melting crucible.

[0008] Optionally, a vacuum feeding port is arranged at the top of the vacuum furnace body; the feeding port is used for feeding materials into the melting crucible.

[0009] Optionally, a mechanical stirring component is arranged at the top of the vacuum furnace body, and the mechanical stirring component is used for stirring the materials in the melting crucible.

[0010] Optionally, an infrared temperature measuring device is arranged at the upper part of the vacuum furnace body.

[0011] Optionally, a tungsten-rhenium thermocouple continuous temperature measuring device is arranged at the upper part of the melting crucible.

[0012] Optionally, a horizontal dragging platform is arranged at the bottom inside the vacuum furnace body, and the dragging platform is used for moving the intermediate frequency induction heating component, the power frequency electromagnetic stirrer, the melting crucible, the solidification water-cooled copper crucible and the intermediate frequency heating power transformer.

[0013] Optionally, a hydraulic casting component is arranged at one side of the melting crucible inside the vacuum furnace body. One end of the hydraulic casting component is connected to one side of the top of the melting crucible, and the other end of the hydraulic casting component is connected to the dragging platform; a solidification water-cooled copper crucible is arranged at the other side of the melting crucible inside the vacuum furnace body.

[0014] Optionally, a diversion groove is arranged between the solidification water-cooled copper crucible component and the melting crucible.

[0015] Optionally, the hydraulic casting component comprises a hydraulic pouring device. One end of the hydraulic pouring device is connected to one side of the top of the melting crucible, and the other end of the hydraulic pouring device is connected to the dragging platform.

[0016] The utility model has achieved the following technical effects compared with the prior art:

[0017] The vacuum melting furnace for homogenizing electromagnetic thermal field by coupling electromagnetic stirring during high-temperature melting of the multi-component alloy of the present utility model can stir the alloy in the melting crucible by setting a power-frequency electromagnetic stirrer and a mechanical stirring component, so that the alloy components can be fully incorporated into the matrix at high temperature and mixed evenly, and then the alloy can be rapidly cooled by the water-cooled fixed mold component to prepare crystal and amorphous structures. This equipment has advantages in preparing the following alloys: semiconductor materials such as Ca-based and Si-based, solid-state hydrogen storage alloys such as TiMn2, LaNi5, Li-Mg-N-H, V60, etc., medium and high entropy alloys, realizing semi-solid preparation technology, and preparing bulk amorphous. Brief Description of the Drawings

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0019] Figure 1 It is a schematic structural diagram of the vacuum melting furnace for electromagnetic thermal field coupling electromagnetic stirring during high-temperature melting of the multi-component alloy in the present utility model;

[0020] Figure 2 It is a schematic cross-sectional structural diagram of the vacuum melting furnace for electromagnetic thermal field coupling electromagnetic stirring during high-temperature melting of the multi-component alloy in the present utility model;

[0021] Figure 3 It is Figure 2 a partial enlarged structural diagram at A in

[0022] Description of the Reference Numerals in the Drawings:

[0023] 1. Electromagnetic Stirring Control Cabinet; 2. Intermediate Frequency Heating Power Transformer; 3. Operation Platform; 4. 3 Inspection Components; 5. Electric Control Cabinet; 6. Mechanical Stirring Component; 7. Vacuum Furnace Body; 8. Vacuum System; 9. Hydraulic Tilting Device; 10. Intermediate Frequency Induction Heating Component; 11. Hydraulic Casting Component; 12. Melting Crucible; 13. Power-Frequency Electromagnetic Stirrer; 14. Solidifying Water-Cooled Copper Crucible; 15. Dragging Platform; 16. Diversion Channel; 17. Vacuum Feeding Component Detailed Embodiments

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0025] The object of the present invention is to provide an electromagnetic thermal field vacuum melting furnace for high-temperature melting of multi-element alloys coupled with electromagnetic stirring, so as to solve the problems existing in the prior art and make the alloy composition and structure uniform.

[0026] In order to make the above objects, features and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0027] As Figures 1 to 3 shown, this embodiment provides an electromagnetic thermal field vacuum melting furnace for high-temperature melting of multi-element alloys coupled with electromagnetic stirring, including a vacuum furnace body 7, a vacuum system 8, a melting crucible 12, an intermediate frequency induction heating assembly 10 and a power frequency electromagnetic stirrer 13; the vacuum furnace body 7 is connected to the vacuum system 8, and the vacuum system 8 is used to evacuate the vacuum furnace body 7 or fill it with protective gas; a crucible 12 is arranged inside the vacuum furnace body 7; an intermediate frequency induction heating assembly 10 and a power frequency electromagnetic stirrer 13 are arranged outside the crucible 12.

[0028] In this specific embodiment, an inspection assembly 4 is arranged at the top of the vacuum furnace body 7. The inspection assembly 4 includes three windows, and transparent glass is arranged at the windows, which is convenient for observing and measuring the temperature inside the vacuum furnace body 7 at any time from different angles.

[0029] A vacuum charging port is arranged at the top of the vacuum furnace body 7; the vacuum charging port is used for charging materials into the crucible 12 and for mechanical stirring. The diameter of the vacuum charging port is 30-35 mm. An openable sealing cover plate is arranged at the vacuum charging port. When charging is required, the sealing cover plate is opened, and after charging, the sealing cover plate is covered again and fixed with bolts.

[0030] A mechanical stirring assembly 6 is arranged at the top of the vacuum furnace body 7. The mechanical stirring assembly 6 is used for stirring the materials in the crucible 12. The mechanical stirring assembly 6 at least includes a stirring motor and a stirring head. One end of the stirring head is connected to the output shaft of the stirring motor, and the stirring head is driven by the stirring motor. A linear module can also be set to control the height of the stirring motor. Thus, when stirring is required, the height of the stirring motor is lowered by the linear module so that the stirring head is inserted into the crucible 12 for stirring. After stirring is completed, the height of the stirring motor is lifted by the linear module to prevent the stirring head from being in the crucible 12 for a long time. The linear module is installed at the top of the vacuum furnace body 7 through a flange. The rotation speed of the mechanical stirring assembly 6 is 2-10 revolutions per minute.

[0031] When melting multi-element alloys at a high temperature of up to 1800 °C, electromagnetic stirring and mechanical stirring can be applied simultaneously to make the melt fluctuate or rotate rapidly, so as to achieve uniform alloy composition under high-temperature conditions.

[0032] An infrared temperature measuring device is arranged at the upper part of the vacuum furnace body 7.

[0033] A tungsten-rhenium thermocouple continuous temperature detector is provided at the upper part of the vacuum furnace body 7. In a more specific embodiment, the tungsten-rhenium thermocouple is used for continuous temperature measurement and is installed on the wall of the graphite crucible 12.

[0034] A dragging platform 15 is provided at the inner bottom of the vacuum furnace body 7, and the dragging platform 15 is used to install the intermediate frequency induction heating assembly 10 and the power frequency electromagnetic stirrer 13.

[0035] A hydraulic casting assembly 11 is provided on one side of the crucible 12 inside the vacuum furnace body 7. One end of the hydraulic casting assembly 11 is connected to one side of the top of the crucible 12, and the other end of the hydraulic casting assembly 11 is connected to the dragging platform 15; a water-cooled fixed mold assembly 14 is provided on the other side of the crucible 12 inside the vacuum furnace body 7. The hydraulic casting assembly 11 includes a hydraulic rod 9. One end of the hydraulic rod 9 is connected to one side of the top of the crucible 12, and the other end of the hydraulic rod 9 is connected to the dragging platform 15.

[0036] The hydraulic tilting device 9 can simultaneously lift the melting crucible 12 and its melt, the intermediate frequency induction heating assembly 10 and the power frequency electromagnetic stirrer 13, and pour them into the solidifying water-cooled copper crucible 14 through the diversion groove 16.

[0037] A diversion groove is provided between the water-cooled fixed mold assembly 14 and the crucible 12. The water-cooled fixed mold assembly 14 includes a water-cooled groove.

[0038] The vacuum feeding assembly 17 is used to add alloys into the melting crucible under vacuum conditions.

[0039] In a more specific embodiment, the electromagnetic thermal field vacuum melting furnace for high-temperature melting of multi-component alloys coupled with electromagnetic stirring further includes an electromagnetic stirring control cabinet 1, a heating power transformer 2, an operation platform 3 and an electric control cabinet 5; the electromagnetic stirring control cabinet 1 is used to control the power frequency electromagnetic stirrer 13, and the heating power transformer 2 is used to supply power to the intermediate frequency induction heating assembly 10; an operation platform 3 is provided on one side outside the vacuum furnace body 7 for easy observation and feeding through the top of the vacuum furnace body 7. The electric control cabinet 5 is used to supply power to the whole equipment.

[0040] It should be noted that for those skilled in the art, obviously the present invention is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention, and any reference signs in the claims should not be regarded as limiting the claims involved.

[0041] In this specification, specific examples are used to illustrate the principle and implementation of the present utility model. The description of the above embodiments is only for helping to understand the method and its core idea of the present utility model; at the same time, for those of ordinary skill in the art, according to the idea of the present utility model, there will be changes in the specific implementation and application scope. In summary, the content of this specification should not be construed as a limitation on the present utility model.

Claims

1. An electromagnetic-thermal field vacuum melting furnace for high-temperature melting of multi-element alloys coupled with electromagnetic stirring, characterized in that, It includes a vacuum furnace body, a vacuum system, an intermediate frequency induction heating component, a power frequency electromagnetic stirrer, a melting crucible, a solidification water-cooled copper crucible, a mechanical stirrer, a vacuum feeding and pouring device; the vacuum furnace body is connected to the vacuum system, and the vacuum system is used to evacuate the vacuum furnace body or fill it with protective gas; the melting crucible is arranged inside the vacuum furnace body; the intermediate frequency induction heating component and the power frequency electromagnetic stirrer are arranged outside the melting crucible.

2. The electromagnetic thermal field vacuum melting furnace for high-temperature melting of multi-component alloys coupled with electromagnetic stirring according to claim 1, characterized in that, A vacuum feeding port is arranged at the top of the vacuum furnace body; the feeding port is used to feed materials into the melting crucible.

3. The electromagnetic-thermal-field vacuum melting furnace for high-temperature melting of multi-element alloy coupled with electromagnetic stirring according to claim 1, characterized in that, A mechanical stirring component is arranged at the top of the vacuum furnace body, and the mechanical stirring component is used to stir the materials in the melting crucible.

4. The electromagnetic thermal field vacuum melting furnace for high-temperature melting of multi-component alloys coupled with electromagnetic stirring according to claim 1, characterized in that, An infrared temperature measuring device is arranged at the upper part of the vacuum furnace body.

5. The electromagnetic-thermal field vacuum melting furnace for high-temperature melting of multi-component alloys with coupled electromagnetic stirring according to claim 1, characterized in that, A tungsten-rhenium thermocouple continuous temperature measuring device is arranged at the upper part of the melting crucible.

6. The electromagnetic thermal field vacuum melting furnace for high-temperature melting of multi-element alloy coupled with electromagnetic stirring according to claim 1, characterized in that, A horizontal dragging platform is arranged at the bottom inside the vacuum furnace body, and the dragging platform is used to move the intermediate frequency induction heating component, the power frequency electromagnetic stirrer, the melting crucible, the solidification water-cooled copper crucible and the intermediate frequency heating power transformer.

7. The electromagnetic thermal field vacuum melting furnace for high-temperature melting of multi-component alloys coupled with electromagnetic stirring according to claim 6, characterized in that, A hydraulic casting component is arranged at one side of the melting crucible inside the vacuum furnace body. One end of the hydraulic casting component is connected to one side of the top of the melting crucible, and the other end of the hydraulic casting component is connected to the dragging platform; a solidification water-cooled copper crucible is arranged at the other side of the melting crucible inside the vacuum furnace body.

8. The electromagnetic thermal field vacuum melting furnace for high-temperature melting of multi-element alloy coupled with electromagnetic stirring according to claim 7, characterized in that, A diversion groove is arranged between the solidification water-cooled copper crucible component and the melting crucible.

9. The electromagnetic-thermal field vacuum melting furnace for high-temperature melting of multi-element alloy coupled with electromagnetic stirring according to claim 7, characterized in that, The hydraulic casting component includes a hydraulic pouring device. One end of the hydraulic pouring device is connected to one side of the top of the melting crucible, and the other end of the hydraulic pouring device is connected to the dragging platform.

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