A magnesium alloy refining apparatus and method

Abstract

This application provides a magnesium alloy refining apparatus and method, including a frame, a drive motor, a cam assembly, a guide assembly, and a stirring component. The drive motor is mounted on the frame. The cam assembly is mounted on the frame and connected to the drive motor. The guide assembly is mounted on the frame, and the guide assembly and cam assembly are located on the same side of the frame. The stirring component is connected to the guide assembly, and its end is connected to the cam assembly. The cam assembly drives the stirring component to move periodically to stir the alloy liquid in the crucible furnace, achieving an up-and-down flow field of the melt, ensuring uniform mixing of all parts of the alloy liquid, effectively improving stirring efficiency, enhancing melt refining effect, improving product mechanical properties, and ensuring the final obtaining of high-quality magnesium alloy castings.

Description

Technical Field

[0001] This application relates to the field of magnesium alloy smelting technology, and in particular to a magnesium alloy refining apparatus and method. Background Technology

[0002] Magnesium alloys are alloys composed of magnesium as the base and other elements added. Their main characteristics are low density (about 1.8 g / cm3), high strength, high elastic modulus, good heat dissipation, good shock absorption, greater impact load capacity than aluminum alloys, and good resistance to corrosion by organic matter and alkalis. They are mainly used in aviation, aerospace, transportation, chemical, rocket and other industrial sectors.

[0003] In the production of magnesium alloys, the molten mixture needs to be stirred to ensure that high-quality magnesium alloy castings are obtained. Currently, there are two main stirring methods: manual stirring and impeller-driven stirring.

[0004] However, when manually stirring the mixture, the high temperature and toxic gases generated by the molten magnesium alloy can easily harm the human body, and it is impossible to guarantee uniform mixing. When using the impeller lifting method to stir the mixture, the impeller needs to rotate at the bottom of the mixture for a long time, which is a harsh working condition. It is easy for the impeller to get stuck, fall off, or corrode, resulting in poor device reliability. In addition, this type of stirring device is large and difficult to disassemble and clean. Summary of the Invention

[0005] This application provides a magnesium alloy refining apparatus and method to solve the problem of needing to stir the molten mixture during the magnesium alloy production process.

[0006] In a first aspect, embodiments of this application provide a magnesium alloy refining apparatus, comprising:

[0007] frame;

[0008] The drive motor is mounted on the frame.

[0009] The cam assembly is mounted on the frame and is connected to the drive motor.

[0010] A guide assembly is mounted on the frame, and the guide assembly and the cam assembly are located on the same side of the frame;

[0011] The agitator is connected to the guide assembly, and the end of the agitator is connected to the cam assembly. The cam assembly drives the agitator to move periodically to stir the molten alloy in the crucible furnace.

[0012] In some feasible implementations, the cam assembly includes a mounting base, a sprocket, and a cam;

[0013] The mounting base is fixedly installed on the frame, and the sprocket is installed in the mounting base and connected to the drive motor.

[0014] The cam has an input hole and an output hole. The input hole is located at the center of the cam shaft, and the output hole is spaced apart from the input hole. The input hole is connected to the sprocket through the cam shaft, and the output hole is connected to the end of the agitator through a copper sleeve.

[0015] In some feasible implementations, the magnesium alloy refining apparatus also includes tension bolts, with the mounting base having tension holes through which the tension bolts pass to fix the mounting base to the frame.

[0016] In some feasible implementations, the frame is provided with a sliding groove extending along the length of the frame, and the mounting base is provided with a dovetail slider. The dovetail slider is connected to the sliding groove so that the mounting base can move along the sliding groove.

[0017] In some feasible implementations, the guide assembly includes a guide bracket, a fixed base, a first guide block, and a second guide block;

[0018] The guide bracket is fixedly connected to the frame, and the fixed seat is fixedly set at the end of the guide bracket away from the frame. The first guide block is hinged to the fixed seat, and the first guide block and the second guide block are connected in a mating connection, forming a mating hole between the first guide block and the second guide block. The agitator is set in the mating hole.

[0019] In some feasible implementations, the frame is provided with a sliding through hole extending along the width of the frame, and the guide bracket is fitted into the sliding through hole.

[0020] In some feasible implementations, the mixing component includes a mixing base plate, a mixing rod, and a connecting seat. The mixing base plate is connected to one end of the mixing rod, the connecting seat is connected to the other end of the mixing rod, and the connecting seat is engaged with a copper sleeve.

[0021] In some feasible implementations, mixing holes are evenly distributed on the mixing base plate.

[0022] In some feasible implementations, the magnesium alloy refining apparatus also includes multiple casters located at the bottom of the frame.

[0023] Secondly, embodiments of this application provide a magnesium alloy refining method, which uses the magnesium alloy refining apparatus as described in the first aspect to stir the alloy liquid located in a crucible furnace.

[0024] This application provides a magnesium alloy refining apparatus, including a frame, a drive motor, a cam assembly, a guide assembly, and a stirring component. The drive motor is mounted on the frame. The cam assembly is mounted on the frame and connected to the drive motor. The guide assembly is mounted on the frame, and the guide assembly and cam assembly are located on the same side of the frame. The stirring component is connected to the guide assembly, and its end is connected to the cam assembly. The cam assembly drives the stirring component to move periodically to stir the alloy liquid in the crucible furnace, achieving an up-and-down flow field of the melt, ensuring uniform mixing of all parts of the alloy liquid, effectively improving stirring efficiency, enhancing melt refining effect, improving product mechanical properties, and ensuring the final obtaining of high-quality magnesium alloy castings. Furthermore, the structure of this apparatus is easy to disassemble, assemble, maintain, and repair.

[0025] This application also provides a magnesium alloy refining method, which uses the magnesium alloy refining apparatus described in the first aspect to stir the alloy liquid in the crucible furnace, thus having all the beneficial effects of the magnesium alloy refining apparatus of the first aspect described above, which will not be repeated here. Attached Figure Description

[0026] The accompanying drawings, which are provided to further illustrate the invention and constitute a part of this invention, are illustrative embodiments of the invention and their descriptions are used to explain this application and do not constitute an undue limitation of the invention.

[0027] In the attached diagram:

[0028] Figure 1 This is a schematic diagram of the overall structure of a magnesium alloy refining apparatus provided in one embodiment of this application;

[0029] Figure 2 yes Figure 1 Another schematic diagram of the magnesium alloy refining unit in the diagram;

[0030] Figure 3 yes Figure 1 A schematic diagram of the cam assembly in the diagram;

[0031] Figure 4 yes Figure 1 A schematic diagram of the frame mechanism;

[0032] Figure 5 yes Figure 1 A schematic diagram of the guiding components in the diagram;

[0033] Figure 6 yes Figure 1 The structural diagram is shown in the image.

[0034] Explanation of reference numerals in the attached figures:

[0035] 100-Frame; 200-Drive motor; 300-Cam assembly; 400-Guide assembly; 500-Agitator; 600-Cruise furnace; 700-Control device; 800-Castle;

[0036] 110-Sliding groove; 120-Sliding through hole; 130-Vertical support; 140-Horizontal support; 150-Motor support plate; 310-Mounting base; 320-Sprocket; 330-Cam; 340-Camshaft; 350-Copper sleeve; 360-Dovetail slider; 370-Tensioning hole; 410-Guide support; 420-Fixed base; 430-First guide block; 440-Second guide block; 510-Mixing base plate; 520-Mixing rod; 530-Connecting base; 511-Mixing hole. Detailed Implementation

[0037] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this application.

[0038] In the description of the embodiments of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0039] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0040] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0041] Magnesium alloys are alloys composed of magnesium as the base and other elements added. Their main characteristics are low density (about 1.8 g / cm3), high strength, high elastic modulus, good heat dissipation, good shock absorption, greater impact load capacity than aluminum alloys, and good resistance to corrosion by organic matter and alkalis. They are mainly used in aviation, aerospace, transportation, chemical, rocket and other industrial sectors.

[0042] In the production of magnesium alloys, the molten mixture needs to be stirred to ensure that high-quality magnesium alloy castings are obtained. Currently, there are two main stirring methods: manual stirring and impeller-driven stirring.

[0043] Because magnesium alloys are highly reactive, the smelting process typically avoids excessive contact between the molten alloy and air. Additionally, magnesium alloys have a low density, making it difficult for slag produced during refining to float. Therefore, a stirring device is needed to create a flow field that allows the melt to move vertically while minimizing surface disturbance. Currently, there are two stirring methods: manual stirring and impeller stirring. Manual stirring requires workers to stand near the crucible furnace, which generates high temperatures and toxic gases, posing a risk of injury. Furthermore, manual stirring is uncontrollable, leading to inconsistent product quality and unstable mechanical properties. The other method uses an impeller to draw the molten alloy from below, which rises along a riser pipe to the surface and then flows out through a side window, creating a vertical flow field. This method requires a large device, and cleaning and disassembling it is time-consuming and labor-intensive. The impeller rotates continuously at the bottom of the melt, operating under harsh conditions, making it prone to jamming, detachment, and corrosion. This type of device has relatively poor reliability.

[0044] To address the aforementioned problems, this application provides a magnesium alloy refining apparatus and solution. The solution provided in this application will be described in detail below with reference to the accompanying drawings.

[0045] Figure 1 This is a schematic diagram of the overall structure of a magnesium alloy refining apparatus provided in one embodiment of this application; Figure 2 yes Figure 1 Another schematic diagram of the magnesium alloy refining unit.

[0046] Reference Figure 1 and Figure 2 As shown, in a first aspect, embodiments of this application provide a magnesium alloy refining apparatus, including a frame 100, a drive motor 200, a cam assembly 300, a guide assembly 400, and a stirring component 500.

[0047] The drive motor 200 is fixedly mounted on the frame 100, and the cam assembly 300 is mounted on the frame 100 and connected to the drive motor 200. The drive motor 200 drives the cam in the cam assembly 300 to move. The guide assembly 400 is mounted on the frame 100, and the guide assembly 400 and the cam assembly 300 are located on the same side of the frame 100. The stirring element 500 is connected to the guide assembly 400, and the end of the stirring element 500 is connected to the cam assembly 300. The guide assembly 400 is used to limit the stirring element 500. When the cam 330 in the cam assembly 300 rotates, it drives the stirring element 500 to move periodically to stir the alloy liquid in the crucible furnace 600, so that the alloy liquid is mixed evenly and high-quality magnesium alloy castings can be obtained in the end.

[0048] In other examples, the magnesium alloy refining apparatus also includes a control device 700, which is fixed to the frame 100 and electrically connected to the drive motor 200 to control the rotational speed of the drive motor 200, thereby controlling the stirring speed of the agitator 500. Exemplarily, the drive motor 200 has a three-phase power input, a power range of 0.7-1.2 kW, and a stable operating temperature of up to 200°C. The control device 700 is a drive motor controller.

[0049] In other words, the magnesium alloy refining apparatus provided in this application uses the cam assembly 300 to drive the stirring member 500 to rotate, and at the same time combines the guide assembly 400 to form a crank rocker mechanism, so that the end of the stirring member 500 performs elliptical stirring motion, thereby making the molten alloy liquid mix evenly.

[0050] The control device 700 can control the drive motor 200 to rotate at different angular velocities to achieve different stirring rates. For example, the stirring component 500 has a radial stirring range of 350mm-400mm, an axial stirring range of 160mm-200mm, and an adjustable stirring rate angular velocity range of 0-1200r / min.

[0051] Figure 3 yes Figure 1 A schematic diagram of the cam assembly 300 in the diagram.

[0052] Reference Figure 3As shown, the cam assembly 300 includes a mounting base 310, a sprocket 320, and a cam 330. The mounting base 310 is fixedly mounted on the frame 100, and the sprocket 320 is fitted into the mounting base 310 and connected to the drive motor 200 via a transmission chain. For example, the mounting base 310 can be fixed to the frame 100 by bolts or welding. Additionally, for example, the number of teeth on the sprocket 320 can range from 33 to 37, and the pitch circle diameter can range from 135 mm to 145 mm.

[0053] For example, cam 330 has an input hole and an output hole, the center distance between which can range from 55mm to 65mm. For example, the input hole is located at the axis of cam 330, and the output hole is spaced apart from the input hole. The input hole is connected to sprocket 320 via cam 330 shaft, and the output hole is connected to the end of stirring member 500 via copper sleeve 350. When drive motor 200 drives sprocket 320 to rotate, sprocket 320 drives cam 330 to rotate, and cam 330 drives stirring member 500 to move periodically, thereby stirring the molten material in crucible furnace 600. For example, the diameter of the extended end of cam 330 shaft ranges from 35mm to 45mm, and the length ranges from 45mm to 55mm.

[0054] Continue to refer to Figure 3 As shown, in some examples, the magnesium alloy refining apparatus also includes a tensioning bolt. The mounting base 310 is provided with a tensioning hole 370, and the frame 100 has a corresponding mounting hole. The tensioning bolt passes through the tensioning hole 370 and the corresponding mounting hole to fix the mounting base 310 to the frame 100. It is understood that the presence of the tensioning bolt facilitates adjustment of the relative distance between the mounting base 310 and the drive motor 200 to tension or loosen the transmission chain, facilitating installation or disassembly.

[0055] Figure 4 yes Figure 1 A schematic diagram of the mechanism of the frame 100.

[0056] Reference Figure 4 As shown, the frame 100 is composed of a vertical support 130 and a horizontal support 140, with a motor support plate 150 positioned in the middle for placing and fixing the drive motor 200. Additionally, a sliding groove 110 extending along the length of the frame 100 is provided horizontally on the motor support plate 150. It should be noted that the length of the frame 100 can be referenced... Figure 4 As shown in the y-direction. Additionally, the mounting base 310 is provided with a dovetail slider 360 that matches the shape of the sliding groove 110. The dovetail slider 360 engages with the sliding groove 110, thereby facilitating the horizontal movement of the mounting base 310. Furthermore, for example, the surface of the dovetail slider 360 and the sliding groove 110 is carburized and high-frequency quenched to a hardness of 53-58 HRC.

[0057] In addition, positioning cylinders are provided at the four corners of the bottom of the frame 100. These positioning cylinders can be welded to the frontmost bottom of the frame 100 to facilitate radial positioning of the crucible furnace 600.

[0058] Figure 5 yes Figure 1 A schematic diagram of the structure of the guide component 400.

[0059] Reference Figure 5 As shown, in some examples, the guide assembly 400 includes a guide bracket 410, a fixed base 420, a first guide block 430, and a second guide block 440. The guide bracket 410 is fixedly connected to the frame 100. For example, the guide bracket 410 can be fixed to the frame 100 by bolts. The fixed base 420 can be fixed to the end of the guide bracket 410 away from the frame 100 by welding. The first guide block 430 is hinged to the fixed base 420, allowing it to rotate around the fixed base 420. For example, the first guide block 430 is connected to the fixed base 420 via a rotating shaft, allowing the first guide block 430 to rotate around the shaft when subjected to external force. Furthermore, the first guide block 430 and the second guide block 440 are matingly connected, and a mating hole is formed between the first guide block 430 and the second guide block 440. The shape of this mating hole is the same as the cross-sectional shape of the main body of the agitator 500, but slightly larger. The agitator 500 is disposed in the mating hole and can move within it.

[0060] Continue to refer to Figure 4 As shown, the frame 100 is provided with a sliding through hole 120 extending along the width direction of the frame 100, and the guide bracket 410 is fitted in the sliding through hole 120 to facilitate the adjustment of the position of the guide bracket 410 so as to adjust the stirring amplitude of the stirring component 500.

[0061] Figure 6 yes Figure 1 A schematic diagram of the structure of the stirring component 500.

[0062] Reference Figure 6As shown, in some examples, the stirring component 500 includes a stirring base plate 510, a stirring rod 520, and a connecting seat 530. The stirring base plate 510 is connected to one end of the stirring rod 520, and the connecting seat 530 is connected to the other end of the stirring rod 520. The connecting seat 530 is engaged with a copper sleeve 350, thereby causing the copper sleeve 350 to move the connecting seat 530, the stirring rod 520, and the stirring base plate 510. For example, the stirring rod 520 has a circular cross-section to facilitate its movement within the mating hole between the first guide block 430 and the second guide block 440 of the guide assembly 400, thus providing sufficient stirring for the molten liquid in the crucible furnace 600. Furthermore, the stirring base plate 510 has evenly distributed mixing holes 511. For example, the diameter of the stirring base plate 510 can range from 180mm to 200mm, and the diameter of the mixing holes 511 can range from 8mm to 12mm.

[0063] Continue to refer to Figure 1 , Figure 2 and Figure 4 As shown, the magnesium alloy refining apparatus also includes casters 800. There are multiple casters 800, which are located at the bottom of the frame 100 to facilitate moving the frame 100 and adjusting the position of the stirring component 500 extending into the crucible furnace 600.

[0064] Secondly, embodiments of this application provide a magnesium alloy refining method, which uses the magnesium alloy refining apparatus as described in the first aspect to stir the molten alloy in the crucible furnace 600.

[0065] To illustrate the superior performance of the magnesium alloy refining apparatus, this application provides the following comparative data.

[0066] Under the stirring refining process conditions of ZM5 magnesium alloy in the 200 kg class, after stirring and refining for 5 minutes using the magnesium alloy refining device of this application, the final sample obtained had a tensile strength of 280 MPa and an elongation of 6%.

[0067] Under the same operating conditions, manual stirring and refining for 5 minutes resulted in a sample with a tensile strength of 260 MPa and an elongation of 5%. A comparison shows that the tensile strength and elongation of the sample generated from the alloy liquid stirred by the magnesium alloy refining device in this application are superior to those of the sample generated from the alloy liquid generated by manual stirring.

[0068] It is readily understood that, based on the several embodiments provided in this application, those skilled in the art can combine, split, or reorganize the embodiments of this application to obtain other embodiments, none of which exceed the protection scope of this application.

[0069] The above detailed embodiments further illustrate the purpose, technical solution, and beneficial effects of the embodiments of this application. It should be understood that the above are merely specific embodiments of the embodiments of this application and are not intended to limit the protection scope of the embodiments of this application. Any modifications, equivalent substitutions, improvements, etc., made on the basis of the technical solutions of the embodiments of this application should be included within the protection scope of the embodiments of this application.

Claims

1. A magnesium alloy refining apparatus, characterized in that, include: Rack (100); A drive motor (200) is mounted on the frame (100); A cam assembly (300) is mounted on the frame (100) and connected to the drive motor (200); A guide assembly (400) is disposed on the frame (100), and the guide assembly (400) and the cam assembly (300) are located on the same side of the frame (100); A stirring element (500) is connected to the guide assembly (400), and the end of the stirring element (500) is connected to the cam assembly (300). The cam assembly (300) drives the stirring element (500) to move periodically to stir the alloy liquid in the crucible furnace (600). The cam assembly (300) includes a mounting base (310), a sprocket (320), and a cam (330); The mounting base (310) is fixedly mounted on the frame (100), the sprocket (320) is fitted in the mounting base (310), and the sprocket (320) is connected to the drive motor (200); The cam (330) has an input hole and an output hole. The input hole is located at the axis of the cam (330), and the output hole is spaced apart from the input hole. The input hole is connected to the sprocket (320) through the camshaft (340), and the output hole is connected to the end of the stirring component (500) through the copper sleeve (350). The guide assembly (400) includes a guide bracket (410), a fixing seat (420), a first guide block (430), and a second guide block (440). The guide bracket (410) is fixedly connected to the frame (100), and the fixed seat (420) is fixedly disposed at one end of the guide bracket (410) away from the frame (100). The first guide block (430) is hinged to the fixed seat (420), and the first guide block (430) and the second guide block (440) are connected in a mating manner, and a mating hole is formed between the first guide block (430) and the second guide block (440). The stirring component (500) is disposed in the mating hole.

2. The magnesium alloy refining apparatus according to claim 1, characterized in that, The magnesium alloy refining apparatus also includes a tensioning bolt, and the mounting base (310) is provided with a tensioning hole (370). The tensioning bolt passes through the tensioning hole (370) to fix the mounting base (310) to the frame (100).

3. The magnesium alloy refining apparatus according to claim 1, characterized in that, The frame (100) is provided with a sliding groove (110) extending along the length of the frame (100), and the mounting base (310) is provided with a dovetail slider (360). The dovetail slider (360) is connected to the sliding groove (110) so that the mounting base (310) can move along the sliding groove (110).

4. The magnesium alloy refining apparatus according to claim 3, characterized in that, The frame (100) is provided with a sliding through hole (120) extending along the width direction of the frame (100), and the guide bracket (410) is disposed in the sliding through hole (120).

5. The magnesium alloy refining apparatus according to claim 1, characterized in that, The stirring component (500) includes a stirring base plate (510), a stirring rod (520), and a connecting seat (530). The stirring base plate (510) is connected to one end of the stirring rod (520), and the connecting seat (530) is connected to the other end of the stirring rod (520). The connecting seat (530) is also connected to the copper sleeve (350).

6. The magnesium alloy refining apparatus according to claim 5, characterized in that, The mixing base plate (510) is evenly distributed with mixing holes (511).

7. The magnesium alloy refining apparatus according to any one of claims 1-6, characterized in that, The magnesium alloy refining apparatus also includes casters (800), and there are multiple casters (800) disposed at the bottom of the frame (100).

8. A method for refining magnesium alloys, characterized in that, The molten alloy in the crucible furnace (600) is stirred using the magnesium alloy refining apparatus as described in any one of claims 1-7.

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