Method and device for smelting magnesium-rare earth alloy for complex castings

Abstract

The present application relates to the field of magnesium rare earth alloy smelting, in particular to a magnesium rare earth alloy smelting method and device for complex castings, which can ensure uniformity of smelting and avoid local heat differentiation, comprising: a smelting box, a transmission box is installed on the top of the smelting box; a feed crushing box is installed on the top of the transmission box, and a crushing roller for crushing is rotatably connected inside the feed crushing box. The present application can crush the material, ensure the smelting efficiency, realize the effect of double stirring and mixing, ensure the magnesium material to be fully mixed, and ensure the smelting temperature of the material inside the smelting box to be uniform during smelting, avoid the phenomenon that the material in a certain area cannot be smelted due to long-term static placement, avoid the formation of significant temperature gradient inside the smelting box, and prevent local overheating of the melt caused by local heat differentiation.

Description

Technical Field

[0001] This invention relates to the field of magnesium rare earth alloy smelting technology, specifically to a method and apparatus for smelting magnesium rare earth alloys for complex castings. Background Technology

[0002] As strategic industries such as aerospace, high-end equipment manufacturing, and new energy vehicles accelerate their upgrades towards high performance, lightweight, and long lifespan, the demand for complex structural castings continues to rise. Magnesium rare earth alloys, with their core advantages such as low density, high specific strength, excellent heat resistance and creep resistance, and outstanding damping and vibration reduction characteristics, have become ideal materials for manufacturing complex and critical components such as aero-engine casings, spacecraft supports, integrated die-cast shells for new energy vehicles, and high-precision machine tool beds. Through the alloying effect of rare earth elements, these alloys effectively compensate for the shortcomings of traditional magnesium alloys, such as poor heat resistance and insufficient corrosion resistance. They can withstand high stress and high temperature environments under complex working conditions, ensuring the reliability and safety of core equipment. They are key basic materials for driving breakthroughs in technological bottlenecks in high-end manufacturing industries.

[0003] Traditional smelting equipment relies on heat conduction and natural convection for heat transfer, making it difficult to achieve uniform heating of the melt from all directions. Magnesium rare earth alloys have high melting points and unique thermal conductivity and thermal expansion characteristics. During the heating process, the temperature in the area near the heat source rises rapidly, while the heat replenishment in the melt area far from the heat source lags behind, resulting in a significant temperature gradient inside the melt. This localized heat difference not only causes localized overheating of the melt, leading to the volatilization and loss of rare earth elements and the oxidation and combustion of magnesium, but also causes unmelted alloy raw materials to accumulate in the low-temperature region, forming compositional segregation, which seriously affects the stability of the melt quality.

[0004] Most traditional equipment lacks an efficient and controllable stirring system. Even if some equipment is equipped with a simple stirring device, the uneven stirring force and limited stirring range make it impossible to achieve forced convection of the melt throughout the entire process. During the smelting process, the melting rate and diffusion efficiency of the alloy raw materials are significantly affected by temperature differences. Without uniform stirring, the melt cannot form a continuous and stable circulation flow, resulting in uneven composition distribution and poor temperature consistency. For high-performance magnesium rare earth alloys required for complex castings, even slight deviations in composition and temperature can cause defects such as shrinkage porosity, shrinkage cavities, and cracks after the casting is formed, which greatly reduces the qualification rate and mechanical properties of the castings and makes it difficult to meet the stringent requirements of high-end equipment manufacturing.

[0005] Therefore, the present invention provides a method and apparatus for smelting magnesium rare earth alloys for complex castings to solve the above problems. Summary of the Invention

[0006] In order to overcome the shortcomings of the prior art, the present invention provides a method and apparatus for melting magnesium rare earth alloys for complex castings, so as to solve the problem of ensuring the uniformity of melting and avoiding local heat differences.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A magnesium rare earth alloy smelting apparatus for complex castings, comprising: A melting box, the top of which is equipped with a transmission box; A feeding crushing box is installed on the top of the transmission box, and a crushing roller for crushing is rotatably connected inside the feeding crushing box; A stirring component includes a stirring shaft and stirring addition plates. The stirring shaft is internally driven and connected to the transmission box. The stirring shaft is rotatably connected to the inside of the melting box. Multiple stirring addition plates are installed on the outer wall of the stirring shaft. The addition component includes a reciprocating screw, a threaded ring, a conveying ring, and an addition block. The reciprocating screw is located inside the stirring shaft. The threaded ring is threadedly connected to the outer wall of the reciprocating screw. The conveying ring is rotatably connected to the outer wall of the threaded ring in a sealed manner. The addition block is connected to the outer wall of the conveying ring in a sealed manner. The addition block matches the stirring addition plate. A mixing component includes a mixing plate and a mixing roller. The mixing plate is slidably connected inside the melting box and drivenly connected to the stirring shaft. The mixing roller is rotatably connected to the outer wall of the mixing plate. This device, through the setting of the feeding crushing box, can crush materials to ensure smelting efficiency. At the same time, through the setting of the stirring and mixing components, it can mix and stir the inside of the smelting box to achieve a double stirring and mixing effect, ensuring that the magnesium material is fully mixed. During smelting, it can ensure that the material smelting temperature inside the smelting box is uniform, avoiding the phenomenon that some areas cannot be smelted due to long-term static material, and avoiding the formation of significant temperature gradients inside the smelting box. This prevents local overheating of the melt caused by local heat differences, resulting in the volatilization loss of rare earth elements and the oxidation and combustion of magnesium elements. At the same time, it prevents unmelted alloy raw materials from accumulating in low-temperature areas, forming component segregation, and affecting the stability of melt quality.

[0008] Preferably, the top of the feed crushing box is equipped with a guide plate, and there are two guide plates. The two guide plates are inclined downwards towards each other and form a conveying channel between them. The conveying channel is located between the two crushing rollers.

[0009] Preferably, the crushing roller is driven by an external motor, a crushing shaft is slidably connected to the inner wall of the crushing roller, a crushing plate is installed at one end of the crushing shaft, a crushing spring is installed on the outer wall of the end of the crushing shaft located inside the crushing roller, the other end of the crushing spring is connected to the inner wall of the crushing roller, and a sealing plate is sealed to the inner wall of the crushing plate by a sealing spring. A fixed shaft is installed on the inner wall of the feed crushing box, and an eccentric wheel is installed on the outer wall of the fixed shaft. The eccentric wheel is matched with the other end of the crushing shaft. During operation, an external motor is started, driving two crushing rollers to rotate. The two rollers rotate relative to each other, and the material enters between them through a guide plate for crushing. While the rollers are rotating, to increase crushing force and prevent slow melting of large pieces of material, the device uses crushing plates to crush the material. When the rollers are not facing each other, the crushing plates are retracted to facilitate material entry. When the rollers are facing each other, one end of the crushing shaft abuts against the outer wall of the eccentric wheel, causing the crushing shaft to move the crushing plates outward. The crushing plates at the opposite ends of the rollers extend outward, creating pressure and crushing the material more thoroughly, facilitating subsequent melting. The initial retraction of the crushing plates facilitates material entry between the rollers for fine crushing. During the crushing process, a sealing plate seals the outer wall of the rollers to prevent material accumulation.

[0010] Preferably, a heat insulation plate is fixedly installed at the bottom of the transmission box, and a drive motor is fixedly installed on the inner top wall of the transmission box. The output end of the drive motor is connected to the stirring shaft and the reciprocating screw through transmission belt one and transmission belt two, respectively. A conveying hole is provided on the inner bottom wall of the transmission box. The conveying hole is connected to the inner wall of the smelting box. The conveying hole is sealed and connected to the feeding crushing box through a conveying cylinder. When in use, the drive motor is started synchronously, which drives the stirring shaft to stir. At the same time, the material crushed by the crushing roller enters the interior of the melting box through the feeding cylinder, where it is stirred and melted by the stirring shaft, while the reciprocating screw rotates.

[0011] Preferably, a material conveying trough is provided on the outer wall of the stirring shaft, and the material conveying trough is sealed and connected to the stirring and adding plate; A guide groove is provided on the inner wall of the stirring shaft, and the guide groove is in communication with the material conveying trough.

[0012] Preferably, a guide rod is provided on one side of the reciprocating screw, and one side of the threaded ring is slidably connected to the outer wall of the guide rod. A conveying pipe is conductively connected to the inner wall of the threaded ring, and the conveying pipe is connected to an external metering pump for adding magnesium material. The outer wall of the adding block is provided with an adding hole. One end of the adding block with the adding hole is slidably and sealed to the inside of the guide groove. A sealing baffle is fixedly installed on the inner wall of the adding block. An adding groove is provided on the inner wall of the sealing baffle. The adding groove is in communication with the inner wall of the conveying ring. A sealing column is fixedly installed on the outer wall of the sealing baffle. The sealing column is offset from the adding groove and there are multiple such columns. The inner wall of the adding block is sealed and slidably connected to a sealing slide plate, and the outer wall of the sealing slide plate is provided with multiple conveying grooves, which are matched with the sealing column; A push rod is fixedly installed at one end of the sealing slide plate. The push rod is slidably connected to the outer wall of the adding block. A push spring is fixedly installed on the outer wall of the push rod. The other end of the push spring is fixedly connected to the inner wall of the adding block. When this device is in use, the rotation of the drive motor will synchronously drive the reciprocating screw to rotate. At this time, the threaded ring on the outer wall of the reciprocating screw will move up and down. The guide rod guides the threaded ring. Magnesium material is quantitatively supplied to the inside of the conveying ring through an external metering pump. The conveying ring, which is sealed and connected to the outer wall of the threaded ring, will rotate with the stirring shaft. The additive block slides in the guide groove. In the initial state, the push rod abuts against the inner wall of the guide groove, the sealing slide plate is in contact with the sealing baffle, and the sealing column is inserted into the inside of the conveying groove. At this time, the additive block is in a sealed state. When the additive block is opposite to the conveying trough, at this time... Under the action of the push rod and the push spring, the push rod drives the sealing slide plate to slide outward, and the sealing column disengages from the inside of the conveying trough. At this time, the inside of the conveying ring, the adding trough, the conveying trough and the adding hole form a flow conveying channel. The magnesium material with pressure inside the conveying ring will enter the inside of the conveying trough through the conveying channel, and thus feed the material in an up-and-down cycle. When the conveying ring continues to descend, the push rod will abut against the inner wall of the guide groove, so that the push rod is in a retracted state. At this time, the conveying channel is in a sealed state until it is opposite to the conveying trough again. The heating component of this device adopts the heating component in the prior art, which will not be described in detail in this application document. This device, through the setting of the adding block and the conveying ring, achieves uniform addition of magnesium material by moving the conveying ring up and down inside the stirring shaft during the conveying process. This avoids magnesium accumulation caused by fixed-point addition and prevents the phenomenon of too much or too little magnesium material in some areas inside the melting box, ensuring uniform addition of magnesium material. Furthermore, the adding block enables automatic quantitative addition of magnesium material when it is aligned with the conveying trough during the up and down movement of the conveying ring, achieving repeated up and down addition to ensure that the magnesium material added in all areas is the same, which facilitates dissolution. When the adding block is separated from the conveying trough, it can reseal itself to avoid magnesium material waste.

[0013] Preferably, one end of the stirring and adding plate is sealed and connected to the conveying trough and allows fluid to flow through it. A sealing plate is slidably connected to the inner bottom wall of the stirring and adding plate. One end of the sealing plate is connected to the side wall at the bottom of the stirring and adding plate through a sealing spring. A top plate is fixedly installed on one side of the top of the sealing plate. The stirring and adding plate is internally slidably connected to a guide plate, one end of which abuts against one end of the abutting rod, and a pushing plate is fixedly installed at the bottom of the guide plate, one side of which abuts against one side of the abutting plate. The abutment spring in this device is a high-strength spring. When the adding block is opposite to the conveying trough, the abutment rod extends under the action of the abutment spring. The elastic coefficient of the abutment spring is greater than that of the closing spring. Therefore, when the abutment rod extends, it abuts against the guide plate, causing the guide plate to move inward. The pushing plate pushes the abutment plate, and the closing plate contracts. The closing spring is in a compressed state, and the bottom of the stirring and adding plate is in a conductive state. At this time, the magnesium material that enters the stirring and adding plate through the conveying trough will be discharged through the interior of the stirring and adding plate. The stirring and adding plate equipped in this device remains tightly sealed during the initial operation phase. When the process requires precise addition of magnesium material, the bottom of this component will open in an orderly manner, thereby achieving automated and quantitative precise addition of magnesium material. This advances the magnesium material addition mode from traditional fixed-point addition to uniform and quantitative addition on a circular surface, effectively avoiding the hidden danger of local accumulation of magnesium material. After the magnesium material is added, the stirring and adding plate immediately exerts its stirring effect, promoting the magnesium material and the material to achieve all-round and deep uniform integration, which facilitates rapid dissolution.

[0014] Preferably, a threaded plate is fixedly installed on the top of the mixing plate, the outer wall of the threaded plate is slidably connected to the inner wall of the heat insulation plate through a sealing folding plate, the threaded plate is threadedly connected to the outer wall of the bidirectional lead screw, the bidirectional lead screw is rotatably connected to the inner side wall of the transmission box, a linkage bevel gear is installed on the outer wall of the bidirectional lead screw, the linkage bevel gear is meshed with the drive bevel gear, and the drive bevel gear is installed on the outer wall of the top of the stirring shaft.

[0015] Preferably, the inner top wall of the mixing plate is rotatably connected to a top shaft, and a top wheel is installed on the outer wall of the top shaft, the top wheel abutting against the bottom of the heat insulation plate; One end of the abutment shaft is driven to the drive shaft via bevel teeth. The drive shaft is rotatably connected inside the mixing plate. The drive shaft is driven to the mixing shaft via bevel teeth. A mixing roller is installed on the outer wall of the mixing shaft. The mixing shaft is rotatably connected inside the mixing plate. To accelerate the dissolution efficiency, this device simultaneously drives the bidirectional lead screw to move when the stirring shaft rotates. At this time, the mixing plate will move, and the two mixing plates will squeeze each other, compressing the space inside the melting box. When the mixing plate moves, the top roller and the heat insulation plate abut against each other. Under the action of the top roller and the drive shaft, the mixing shaft drives the mixing roller to rotate, realizing the function of compression and agitation, thereby accelerating the dissolution efficiency.

[0016] A method for smelting magnesium rare earth alloys for complex castings includes the following steps: Step A: Start the crushing motor and feed the material into the inside of the crushing box for crushing by the crushing rollers; Step B: After the crushed material enters the melting tank, the drive motor and heating components are started to drive the stirring shaft to stir it. Step C: Simultaneously start the metering pump and add magnesium material in a quantitative up-and-down circulation through the conveyor to the inside of the melting box to achieve thorough mixing and dissolution; Step D: The mixing plate performs reciprocating cyclic extrusion, while the mixing rollers mix the materials inside the melting box.

[0017] The beneficial effects of this invention are as follows: 1. This device, through the setting of the feeding crushing box, can crush materials to ensure smelting efficiency. At the same time, through the setting of the stirring and mixing components, it can mix and stir the inside of the smelting box to achieve a double stirring and mixing effect, ensuring that the magnesium material is fully mixed. During smelting, it can ensure that the material smelting temperature inside the smelting box is uniform, avoiding the phenomenon that certain areas cannot be smelted due to long-term static material, avoiding the formation of significant temperature gradients inside the smelting box, and preventing local overheating of the melt caused by local heat differences, resulting in the volatilization loss of rare earth elements and the oxidation and combustion of magnesium elements. At the same time, it can prevent unmelted alloy raw materials from accumulating in low-temperature areas, forming component segregation, and affecting the stability of melt quality.

[0018] 2. When the crushing rollers rotate, in order to increase the crushing force and avoid the phenomenon of slow melting of large pieces of material, the crushing plate of this device crushes the material. At the same time, when the two crushing rollers are not facing each other, the crushing plate of this device is in a retracted state to facilitate the material to enter between the two crushing rollers. When the crushing rollers rotate to face each other, one end of the crushing shaft will abut against the outer wall of the eccentric wheel, so that the crushing shaft drives the crushing plate to move outward. The crushing plate at the opposite end of the two crushing rollers extends outward to achieve compression and abutment, applying pressure to the material. The material is crushed more thoroughly, which is convenient for subsequent melting. Moreover, the initial retraction of the crushing plate makes it easier for the material to enter between the two crushing rollers for fine crushing.

[0019] 3. This device, through the setting of the adding block and the conveying ring, achieves uniform addition of magnesium material by moving the conveying ring up and down inside the stirring shaft during the conveying process. This avoids magnesium accumulation caused by fixed-point addition and prevents the phenomenon of too much or too little magnesium material in some areas inside the melting box, ensuring uniform addition of magnesium material. Furthermore, the adding block enables automatic quantitative addition of magnesium material when it is aligned with the conveying trough during the up and down movement of the conveying ring, achieving repeated up and down addition to ensure that the magnesium material added in all places is the same, which facilitates dissolution. When the adding block is separated from the conveying trough, it can reseal the adding block to avoid magnesium material waste.

[0020] 4. The stirring and adding plate equipped in this device maintains a tight seal during the initial operation phase. When the process requires precise addition of magnesium material, the bottom of this component will open in an orderly manner, thereby achieving automated and quantitative precise addition of magnesium material. This advances the magnesium material addition mode from traditional fixed-point addition to uniform quantitative addition on a circular surface, effectively avoiding the hidden danger of local accumulation of magnesium material. After the magnesium material is added, the stirring and adding plate immediately exerts its stirring effect, promoting the magnesium material and the material to achieve all-round and deep uniform integration, which facilitates rapid dissolution.

[0021] 5. In order to accelerate the dissolution efficiency, this device will synchronously drive the bidirectional lead screw to move when the stirring shaft rotates. At this time, the mixing plate will move and the two mixing plates will squeeze each other, thus compressing the space inside the melting box. When the mixing plate moves, the top roller and the heat insulation plate will abut against each other. Under the action of the top roller and the drive shaft, the mixing shaft will drive the mixing roller to rotate, realizing the function of compression and agitation, thereby accelerating the dissolution efficiency. Attached Figure Description

[0022] Figure 1 This is a three-dimensional schematic diagram of the present invention from the front view; Figure 2 This is a schematic diagram showing the interior of the invention from the front. Figure 3This is a schematic cross-sectional view of the feed crushing box of the present invention; Figure 4 This is a schematic diagram of the interior of the crushing roller of the present invention; Figure 5 This is a schematic cross-sectional view of the transmission box of the present invention; Figure 6 This is a schematic cross-sectional view of the melting box of the present invention; Figure 7 This is a schematic diagram showing a cross-section of the stirring shaft of the present invention; Figure 8 This is a schematic diagram of the interior of the conveying ring of the present invention; Figure 9 This is a schematic cross-sectional view of the stirring and adding plate of the present invention; Figure 10 This is a schematic cross-sectional view of the hybrid plate of the present invention.

[0023] In the diagram: 1. Melting box; 2. Transmission box; 201. Heat insulation plate; 202. Drive motor; 203. Conveying hole; 204. Conveying cylinder; 3. Feed crushing box; 301. Crushing roller; 302. Guide plate; 303. Crushing shaft; 304. Crushing plate; 305. Crushing spring; 306. Sealing plate; 307. Sealing spring; 308. Fixed shaft; 309. Eccentric wheel; 4. Stirring shaft; 401. Feed chute; 402. Guide chute; 403. Drive bevel gear; 5. Stirring and adding plate; 501. Sealing plate; 502. Sealing spring; 503. Top plate; 504. Conductor plate; 505. Pushing plate; 6. Reciprocating lead screw; 601. Guide rod; 602. Conveyor pipe; 7. Threaded ring; 8. Conveyor ring; 9. Adding block; 901. Sealing baffle; 902. Adding groove; 903. Sealing column; 904. Sealing slide plate; 905. Conveying groove; 906. Push rod; 10. Mixing plate; 1001. Threaded plate; 1002. Double-acting lead screw; 1003. Sealing folding plate; 1004. Linkage bevel gear; 1005. Pushing wheel; 1006. Pushing shaft; 1007. Drive shaft; 11. Mixing roller; 1101. Mixing shaft. Detailed Implementation

[0024] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0025] A magnesium rare earth alloy melting apparatus for complex castings, as shown in the attached document. Figure 1-10 As shown, it includes: Melting box 1, with a transmission box 2 installed on top of melting box 1; Feed crushing box 3 is installed on the top of transmission box 2. Inside the feed crushing box 3, there is a crushing roller 301 for crushing. The stirring component includes a stirring shaft 4 and stirring addition plates 5. The stirring shaft 4 is internally driven to the transmission box 2 and rotatably connected to the inside of the melting box 1. Multiple stirring addition plates 5 are installed on the outer wall of the stirring shaft 4. The addition components include a reciprocating screw 6, a threaded ring 7, a conveying ring 8, and an addition block 9. The reciprocating screw 6 is located inside the stirring shaft 4. The threaded ring 7 is threadedly connected to the outer wall of the reciprocating screw 6. The conveying ring 8 is rotatably connected to the outer wall of the threaded ring 7. The addition block 9 is rotatably connected to the outer wall of the conveying ring 8. The addition block 9 matches the stirring addition plate 5. The mixing component includes a mixing plate 10 and a mixing roller 11. The mixing plate 10 is slidably connected inside the melting box 1 and is drivenly connected to the stirring shaft 4. The mixing roller 11 is rotatably connected to the outer wall of the mixing plate 10. This device, through the setting of the feeding crushing box 3, can crush the material to ensure smelting efficiency. At the same time, through the setting of the stirring and mixing components, it can mix and stir the inside of the smelting box 1 to achieve a double stirring and mixing effect, ensuring that the magnesium material is fully mixed. During smelting, it can ensure that the material smelting temperature inside the smelting box 1 is uniform, avoiding the phenomenon that a certain area cannot be smelted due to long-term static material, avoiding the formation of a significant temperature gradient inside the smelting box 1, preventing local heat difference from causing local overheating of the melt, resulting in the volatilization loss of rare earth elements and the oxidation and combustion of magnesium elements. At the same time, it can prevent unmelted alloy raw materials from accumulating in low-temperature areas, forming component segregation, and affecting the stability of melt quality.

[0026] As attached Figure 2-4 As shown, a guide plate 302 is installed on the top of the feed crushing box 3. There are two guide plates 302, which are inclined downwards towards each other and form a conveying channel between them. The conveying channel is located between the two crushing rollers 301.

[0027] As attached Figure 2-4 As shown, the crushing roller 301 is driven by an external motor. A crushing shaft 303 is slidably connected to the inner wall of the crushing roller 301. A crushing plate 304 is installed at one end of the crushing shaft 303. A crushing spring 305 is installed on the outer wall of the inner end of the crushing shaft 303. The other end of the crushing spring 305 is connected to the inner wall of the crushing roller 301. A sealing plate 306 is sealed to the inner wall of the crushing plate 304 by a sealing spring 307. A fixed shaft 308 is installed on the inner wall of the feed crushing box 3, and an eccentric wheel 309 is installed on the outer wall of the fixed shaft 308. The eccentric wheel 309 is matched with the other end of the crushing shaft 303. In operation, an external motor is started, causing the two crushing rollers 301 to rotate. The two rollers rotate relative to each other, and the material enters between them via the guide plate 302 for crushing. While the rollers 301 are rotating, to increase the crushing force and prevent large pieces of material from melting too slowly, the device uses a crushing plate 304 to crush the material. When the two rollers 301 are not facing each other, the crushing plate 304 is in a retracted state to facilitate material entry between them. When the rollers 301 rotate to face each other... At this time, one end of the crushing shaft 303 will abut against the outer wall of the eccentric wheel 309, causing the crushing shaft 303 to drive the crushing plate 304 to move outward. The crushing plates 304 at opposite ends of the two crushing rollers 301 extend outward to achieve compression and abutment, applying pressure to the material. The material is crushed more thoroughly, which is convenient for subsequent smelting. Furthermore, the initial contraction of the crushing plate 304 facilitates the material to enter between the two crushing rollers 301 for fine crushing. When the crushing plate 304 extends and compresses the material, the sealing plate 306 seals the outer wall of the crushing roller 301 to prevent the material from accumulating on the outer wall of the crushing roller 301.

[0028] As attached Figure 2 and attached Figure 5 As shown, a heat insulation plate 201 is fixedly installed at the bottom of the transmission box 2, and a drive motor 202 is fixedly installed on the inner top wall of the transmission box 2. The output end of the drive motor 202 is connected to the stirring shaft 4 and the reciprocating screw 6 through the first transmission belt and the second transmission belt, respectively. A conveying hole 203 is provided on the inner bottom wall of the transmission box 2. The conveying hole 203 is connected to the inner wall of the melting box 1. The conveying hole 203 is connected to the feeding crushing box 3 in a sealed manner through the conveying cylinder 204. When in use, the drive motor 202 is started synchronously, so that the drive motor 202 drives the stirring shaft 4 to stir. At the same time, the material crushed by the crushing roller 301 enters the interior of the melting box 1 through the conveying cylinder 204, and is stirred and melted by the stirring shaft 4. Meanwhile, the reciprocating screw 6 rotates.

[0029] As attached Figure 6 As shown, a material conveying trough 401 is provided on the outer wall of the stirring shaft 4. The material conveying trough 401 is sealed and connected to the stirring and adding plate 5. A guide groove 402 is provided on the inner wall of the stirring shaft 4, and the guide groove 402 is connected to the material conveying trough 401.

[0030] As attached Figure 6-8As shown, a guide rod 601 is provided on one side of the reciprocating screw 6, and a threaded ring 7 is slidably connected to the outer wall of the guide rod 601 on one side. A conveying pipe 602 is conductively connected to the inner wall of the threaded ring 7. The conveying pipe 602 is connected to an external metering pump for adding magnesium material. An adding hole is provided on the outer wall of the adding block 9. One end of the adding block 9 with the adding hole is slidably connected to the inside of the guide groove 402. A sealing baffle 901 is fixedly installed on the inner wall of the adding block 9. An adding groove 902 is provided on the inner wall of the sealing baffle 901. The adding groove 902 is in communication with the inner wall of the conveying ring 8. A sealing column 903 is fixedly installed on the outer wall of the sealing baffle 901. The sealing column 903 is offset from the adding groove 902, and there are multiple of them. The inner wall of the added block 9 is sealed and slidably connected to the sealing slide plate 904. The outer wall of the sealing slide plate 904 is provided with multiple conveying grooves 905, which are matched with the sealing column 903. A push rod 906 is fixedly installed at one end of the sealing slide plate 904. The push rod 906 is slidably connected to the outer wall of the adding block 9. A push spring is fixedly installed on the outer wall of the push rod 906. The other end of the push spring is fixedly connected to the inner wall of the adding block 9. When this device is in use, the rotation of the drive motor 202 will synchronously drive the reciprocating screw 6 to rotate. At this time, the threaded ring 7 on the outer wall of the reciprocating screw 6 will move up and down. The guide rod 601 guides the threaded ring 7. Magnesium material is quantitatively supplied to the inside of the conveying ring 8 through an external metering pump. The conveying ring 8, which is sealed and connected to the outer wall of the threaded ring 7, will rotate with the stirring shaft 4. The adding block 9 slides in a sealed manner inside the guide groove 402. In the initial state, the abutting rod 906 abuts against the inner wall of the guide groove 402, the sealing slide plate 904 is in contact with the sealing baffle 901, and the sealing column 903 is inserted into the inside of the conveying groove 905. At this time, the adding block 9 is in a sealed state. When the adding block 9 is opposite to the conveying groove 401, this... When the push rod 906 is under the action of the push spring, it causes the sealing slide plate 904 to slide outward, and the sealing column 903 disengages from the inside of the conveying groove 905. At this time, the inside of the conveying ring 8, the adding groove 902, the conveying groove 905 and the adding hole form a flow conveying channel. The magnesium material with pressure inside the conveying ring 8 will enter the inside of the conveying trough 401 through the conveying channel, and thus perform up and down circulation feeding. When the conveying ring 8 continues to descend, the push rod 906 will abut against the inner wall of the guide groove 402, so that the push rod 906 is in a contracted state. At this time, the conveying channel is in a sealed state until it is opposite to the conveying trough 401 again. The heating component of this device adopts the heating component in the prior art, which will not be described in detail in this application document. This device, through the setting of the adding block 9 and the conveying ring 8, achieves uniform addition of magnesium material by moving the conveying ring 8 up and down inside the stirring shaft 4 during the conveying of magnesium material. This avoids the accumulation of magnesium material caused by fixed-point addition and prevents the phenomenon of too much or too little magnesium material in some areas inside the melting box 1, ensuring uniform addition of magnesium material. Furthermore, through the adding block 9, when the adding block 9 is opposite to the conveying trough 401 during the up and down movement of the conveying ring 8, it can achieve automatic quantitative addition of magnesium material, realizing the up and down circulation and ensuring that the magnesium material added in all places is the same, which facilitates dissolution. When the adding block 9 is separated from the conveying trough 401, it can reseal the adding block 9 to avoid the waste of magnesium material.

[0031] As attached Figure 9 As shown, one end of the stirring and adding plate 5 is sealed and connected to the conveying trough 401 and the fluid is connected. A sealing plate 501 is slidably connected to the inner bottom wall of the stirring and adding plate 5. One end of the sealing plate 501 is connected to the side wall of the bottom of the stirring and adding plate 5 through a sealing spring 502. A top plate 503 is fixedly installed on one side of the top of the sealing plate 501. A guide plate 504 is slidably connected inside the stirring and adding plate 5. One end of the guide plate 504 abuts against one end of the push rod 906. A push plate 505 is fixedly installed at the bottom of the guide plate 504. One side of the push plate 505 abuts against one side of the push plate 503. The abutment spring of this device is a strong spring. When the adding block 9 is opposite to the conveying trough 401, the abutment rod 906 extends under the action of the abutment spring. The elastic coefficient of the abutment spring is greater than that of the closing spring 502. Therefore, when the abutment rod 906 extends, it abuts the guide plate 504, causing the guide plate 504 to move inward. The pushing plate 505 pushes the abutment plate 503. At this time, the closing plate 501 retracts, the closing spring 502 is in a compressed state, and the bottom of the stirring adding plate 5 is in a conductive state. At this time, the magnesium material that enters the interior of the stirring adding plate 5 through the conveying trough 401 will be discharged through the interior of the stirring adding plate 5. The stirring and adding plate 5 equipped in this device maintains a tight seal during the initial operation phase. When the process requires precise addition of magnesium material, the bottom of this component will open in an orderly manner, thereby achieving automated and quantitative precise addition of magnesium material. This advances the magnesium material addition mode from traditional fixed-point addition to uniform quantitative addition on a circular surface, effectively avoiding the hidden danger of local accumulation of magnesium material. After the magnesium material is added, the stirring and adding plate 5 immediately exerts its stirring effect, promoting the magnesium material and the material to achieve all-round and deep uniform integration, which facilitates rapid dissolution.

[0032] As attached Figure 5As shown, a threaded plate 1001 is fixedly installed on the top of the mixing plate 10. The outer wall of the threaded plate 1001 is slidably connected to the inner wall of the heat insulation plate 201 through a sealing folding plate 1003. The threaded plate 1001 is threadedly connected to the outer wall of the bidirectional lead screw 1002. The bidirectional lead screw 1002 is rotatably connected to the inner wall of the transmission box 2. A linkage bevel gear 1004 is installed on the outer wall of the bidirectional lead screw 1002. The linkage bevel gear 1004 is meshed with the drive bevel gear 403. The drive bevel gear 403 is installed on the outer wall of the top of the stirring shaft 4.

[0033] As attached Figure 10 As shown, the inner top wall of the mixing plate 10 is rotatably connected to the abutment shaft 1006, and the outer wall of the abutment shaft 1006 is equipped with an abutment wheel 1005, which abuts against the bottom of the heat insulation plate 201. One end of the abutment shaft 1006 is driven to the drive shaft 1007 via bevel teeth. The drive shaft 1007 is rotatably connected inside the mixing plate 10. The drive shaft 1007 is driven to the mixing shaft 1101 via bevel teeth. A mixing roller 11 is installed on the outer wall of the mixing shaft 1101. The mixing shaft 1101 is rotatably connected inside the mixing plate 10. To accelerate the dissolution efficiency, the device rotates the stirring shaft 4, which simultaneously drives the bidirectional lead screw 1004 to move. At this time, the mixing plate 10 will move, and the two mixing plates 10 will squeeze each other, compressing the space inside the melting box 1. When the mixing plate 10 moves, the abutting wheel 1005 and the heat insulation plate 201 abut against each other. Under the action of the abutting shaft 1006 and the transmission shaft 1007, the mixing shaft 1101 drives the mixing roller 11 to rotate, realizing the function of compression and stirring, thereby accelerating the dissolution efficiency.

[0034] A method for smelting magnesium rare earth alloys for complex castings includes the following steps: Step A: Start the crushing motor and feed the material into the inside of the feeding crushing box 3, where it is crushed by the crushing roller 301; Step B: After the crushed material enters the melting box 1, the stirring shaft 4 is stirred by starting the drive motor 202 and the heating components. Step C: Simultaneously start the metering pump and add magnesium material quantitatively and continuously to the inside of the melting box 1 through the conveying ring 8 to achieve full mixing and dissolution; Step D: The mixing plate 10 performs reciprocating cyclic extrusion, while the mixing roller 11 mixes the materials inside the melting box 1.

[0035] It should be noted that in the description of this invention, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0036] Furthermore, it should be noted that, in the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0037] The technical solution of the present invention has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will all fall within the scope of protection of the present invention.

Claims

1. A magnesium rare earth alloy melting apparatus for complex castings, characterized in that, include: A melting box (1), on the top of which a transmission box (2) is installed; Feed crushing box (3), the feed crushing box (3) is installed on the top of the transmission box (2), and the inside of the feed crushing box (3) is rotatably connected with crushing rollers (301) for crushing. The stirring component includes a stirring shaft (4) and stirring addition plates (5). The stirring shaft (4) is driven to the inside of the transmission box (2). The stirring shaft (4) is rotatably connected to the inside of the melting box (1). Multiple stirring addition plates (5) are installed on the outer wall of the stirring shaft (4). The addition components include a reciprocating screw (6), a threaded ring (7), a conveying ring (8), and an addition block (9). The reciprocating screw (6) is located inside the stirring shaft (4). The threaded ring (7) is threadedly connected to the outer wall of the reciprocating screw (6). The conveying ring (8) is rotatably connected to the outer wall of the threaded ring (7). The addition block (9) is rotatably connected to the outer wall of the conveying ring (8). The addition block (9) matches the stirring addition plate (5). The mixing component includes a mixing plate (10) and a mixing roller (11), the mixing plate (10) being slidably connected inside the melting box (1) and drivenly connected to the stirring shaft (4), and the mixing roller (11) being rotatably connected to the outer wall of the mixing plate (10).

2. The magnesium rare earth alloy smelting apparatus for complex castings according to claim 1, characterized in that, The top of the feed crushing box (3) is equipped with a guide plate (302). There are two guide plates (302). The two guide plates (302) are inclined downward to each other and form a conveying channel between them. The conveying channel is located between the two crushing rollers (301).

3. The magnesium rare earth alloy smelting apparatus for complex castings according to claim 2, characterized in that, The crushing roller (301) is driven by an external motor. A crushing shaft (303) is slidably connected to the inner wall of the crushing roller (301). A crushing plate (304) is installed at one end of the crushing shaft (303). A crushing spring (305) is installed on the outer wall of the crushing shaft (303) located inside the crushing roller (301). The other end of the crushing spring (305) is connected to the inner wall of the crushing roller (301). A sealing plate (306) is sealed to the inner wall of the crushing plate (304) by a sealing spring (307). A fixed shaft (308) is installed on the inner wall of the feed crushing box (3), and an eccentric wheel (309) is installed on the outer wall of the fixed shaft (308). The eccentric wheel (309) is matched with the other end of the crushing shaft (303).

4. The magnesium rare earth alloy smelting apparatus for complex castings according to claim 3, characterized in that, A heat insulation plate (201) is fixedly installed at the bottom of the transmission box (2), and a drive motor (202) is fixedly installed on the inner top wall of the transmission box (2). The output end of the drive motor (202) is connected to the stirring shaft (4) and the reciprocating screw (6) through transmission belt one and transmission belt two respectively. The transmission box (2) has a conveying hole (203) on its inner bottom wall. The conveying hole (203) is connected to the inner wall of the melting box (1). The conveying hole (203) is connected to the feeding crushing box (3) in a sealed manner through the conveying cylinder (204).

5. The magnesium rare earth alloy smelting apparatus for complex castings according to claim 4, characterized in that, A material conveying trough (401) is provided on the outer wall of the stirring shaft (4), and the material conveying trough (401) is sealed and connected to the stirring and adding plate (5); A guide groove (402) is provided on the inner wall of the stirring shaft (4), and the guide groove (402) is connected to the material conveying trough (401).

6. The magnesium rare earth alloy smelting apparatus for complex castings according to claim 5, characterized in that, A guide rod (601) is provided on one side of the reciprocating screw (6), and one side of the threaded ring (7) is slidably connected to the outer wall of the guide rod (601). A conveying pipe (602) is conductively connected to the inner wall of the threaded ring (7). The conveying pipe (602) is connected to an external metering pump for adding magnesium material. An addition hole is provided on the outer wall of the addition block (9). One end of the addition block (9) with the addition hole is slidably connected to the inside of the guide groove (402). A sealing baffle (901) is fixedly installed on the inner wall of the addition block (9). An addition groove (902) is provided on the inner wall of the sealing baffle (901). The addition groove (902) is connected to the inner wall of the conveying ring (8). A sealing column (903) is fixedly installed on the outer wall of the sealing baffle (901). The sealing column (903) is offset from the addition groove (902) and there are multiple of them. The inner wall of the adding block (9) is sealed and slidably connected to the sealing slide plate (904), and the outer wall of the sealing slide plate (904) is provided with a plurality of conveying grooves (905), which are matched with the sealing column (903); A push rod (906) is fixedly installed at one end of the sealing slide plate (904). The push rod (906) is slidably connected to the outer wall of the adding block (9). A push spring is fixedly installed on the outer wall of the push rod (906). The other end of the push spring is fixedly connected to the inner wall of the adding block (9).

7. The magnesium rare earth alloy smelting apparatus for complex castings according to claim 6, characterized in that, One end of the stirring and adding plate (5) is sealed and connected to the conveying trough (401) and the fluid is connected. A sealing plate (501) is slidably connected to the inner bottom wall of the stirring and adding plate (5). One end of the sealing plate (501) is connected to the side wall of the bottom of the stirring and adding plate (5) through a sealing spring (502). A top plate (503) is fixedly installed on one side of the top of the sealing plate (501). The stirring and adding plate (5) is internally slidably connected to a guide plate (504). One end of the guide plate (504) abuts against one end of the abutting rod (906). A push plate (505) is fixedly installed at the bottom of the guide plate (504). One side of the push plate (505) abuts against one side of the abutting plate (503).

8. The magnesium rare earth alloy smelting apparatus for complex castings according to claim 7, characterized in that, A threaded plate (1001) is fixedly installed on the top of the mixing plate (10). The outer wall of the threaded plate (1001) is slidably connected to the inner wall of the heat insulation plate (201) by a sealing folding plate (1003). The threaded plate (1001) is threadedly connected to the outer wall of the double-acting screw (1002). The double-acting screw (1002) is rotatably connected to the inner wall of the transmission box (2). A linkage bevel gear (1004) is installed on the outer wall of the double-acting screw (1002). The linkage bevel gear (1004) is meshed with the drive bevel gear (403). The drive bevel gear (403) is installed on the outer wall of the top of the stirring shaft (4).

9. A magnesium rare earth alloy smelting apparatus for complex castings according to claim 8, characterized in that, The inner top wall of the mixing plate (10) is rotatably connected to an abutment shaft (1006), and an abutment wheel (1005) is installed on the outer wall of the abutment shaft (1006). The abutment wheel (1005) abuts against the bottom of the heat insulation plate (201). One end of the abutment shaft (1006) is driven to the drive shaft (1007) via bevel teeth. The drive shaft (1007) is rotatably connected inside the mixing plate (10). The drive shaft (1007) is driven to the mixing shaft (1101) via bevel teeth. A mixing roller (11) is installed on the outer wall of the mixing shaft (1101). The mixing shaft (1101) is rotatably connected inside the mixing plate (10).

10. A method for smelting magnesium rare earth alloys for complex castings, comprising the magnesium rare earth alloy smelting apparatus for complex castings as described in any one of claims 1-9, characterized in that, Includes the following steps: Step A: Start the crushing motor and feed the material into the inside of the feed crushing box (3) for crushing by the crushing roller (301); Step B: After the crushed material enters the melting box (1), the stirring shaft (4) is stirred by starting the drive motor (202) and the heating components; Step C: Start the metering pump synchronously and add magnesium material quantitatively up and down through the conveying ring (8) into the melting box (1) to achieve full mixing and dissolution; Step D: The mixing plate (10) performs reciprocating cyclic extrusion, while the mixing roller (11) mixes the material inside the melting box (1).

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