An ultrasonic pouring system for wear-resistant zinc-aluminum alloy castings

Abstract

This invention proposes an ultrasonic casting system for wear-resistant zinc-aluminum alloy castings, belonging to the field of alloy casting equipment. It solves the problems of unstable molten metal flow rate, difficulty in temperature control, coarse grains caused by modifier failure, and mold splashing during casting caused by manual pouring in the production of wear-resistant zinc-aluminum alloy castings. The system includes a tundish, an ultrasonic treatment system, a flow-guiding mold, and a mold positioning mechanism. The flow-guiding mold is located at the bottom of the tundish, and a heating device is located on the outside of the tundish. A push rod is located on the top cover, with its bottom inserted into the flow-guiding mold. The ultrasonic treatment system includes a transducer, an ultrasonic generator, an amplitude transformer, and a guide rod. The guide rod penetrates the top cover, with its bottom extending below the molten metal surface. The top of the guide rod is connected to the amplitude transformer, which is connected to the transducer, and the transducer is connected to the ultrasonic generator. A mold positioning mechanism is located below the flow-guiding mold. It is mainly used for casting zinc-aluminum alloy castings.

Description

Technical Field

[0001] This utility model belongs to the field of alloy casting equipment technology, and in particular relates to an ultrasonic casting system for wear-resistant zinc-aluminum alloy castings. Background Technology

[0002] Wear-resistant zinc-aluminum alloy, as a substitute for wear-resistant 663 tin bronze, has been successfully applied in the manufacture of bearing-type mechanical parts such as bushings and bushings in industries such as power, machinery, metallurgy, and automobiles due to its superior performance. Wear-resistant zinc-aluminum alloy not only has better strength and hardness than wear-resistant 663 tin bronze, but its wear resistance is also better than that of 663 tin bronze. The heat generated by its friction is relatively small, and the production cost of producing the same product is only 1 / 3 of that of 663 tin bronze.

[0003] Because wear-resistant zinc-aluminum alloys contain aluminum, and zinc and aluminum have a large difference in specific gravity and different crystal structures, the solidification of zinc-aluminum alloys will produce large macroscopic and microscopic segregation. In addition, due to the wide solidification temperature range of zinc-aluminum alloys, grain growth is severe during solidification, which seriously affects the performance of zinc-aluminum alloys. The segregation and coarse grains of wear-resistant zinc-aluminum alloys greatly limit the promotion of its casting products.

[0004] While existing wear-resistant zinc-aluminum alloys exhibit high strength and wear resistance, their elongation is relatively low. To improve elongation, modifiers such as Ti, B, and rare earth elements are added to refine the grain size of the alloying elements. However, current methods of refining grain size through the addition of modifiers have limited effect and do not significantly improve the alloy's elongation. Current wear-resistant zinc-aluminum alloys are smelted in a furnace. After the metal is completely melted, a slag remover is poured into the furnace, and the molten metal is allowed to stand for a period of time to remove slag. Then, a modifier is added to modify the molten metal. After standing for a period of time, the molten metal is poured into a ladle, and finally, the ladle molten metal is poured into the ladle. In practice, molten metal is manually poured into the mold from the ladle, which causes uneven flow rate and unstable flow, ultimately affecting the quality of the casting. Furthermore, the existing casting process involves pouring molten metal from the melting furnace into the mold in batches through ladles, and each ladle cannot contain too much molten metal to prevent the molten metal from cooling down too quickly and falling below the pouring temperature. Therefore, the casting process cannot be completed in one go, resulting in the modified molten metal staying in the melting furnace for too long, causing the modifier to remain in the molten metal for an extended period and become ineffective. During the solidification process, the grains grow significantly. Utility Model Content

[0005] In view of this, the present invention aims to propose an ultrasonic casting system for wear-resistant zinc-aluminum alloy castings to solve the problems of unstable molten metal flow rate, difficulty in temperature control, coarse grains caused by modifier failure, and mold splashing caused by manual casting in the production of wear-resistant zinc-aluminum alloy castings.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: an ultrasonic casting system for wear-resistant zinc-aluminum alloy castings, comprising an tundish, an ultrasonic treatment system, a flow-guiding mold, and a mold positioning mechanism; the tundish has a top cover and a through hole at the bottom, with the flow-guiding mold housed within the through hole; a heating device is provided on the outside of the tundish; molten metal is stored in the tundish; a top rod is inserted through the top cover, its bottom inserted into the flow-guiding mold; a flow-guiding port with a conical structure is provided inside the flow-guiding mold; the ultrasonic treatment system includes a transducer, an ultrasonic generator, an amplitude transformer, and an induction rod; the induction rod penetrates the top cover, its bottom extending below the molten metal surface; its top is connected to the bottom of the amplitude transformer; the top of the amplitude transformer is connected to the transducer; the transducer is connected to the ultrasonic generator; metal molds are spaced apart below the flow-guiding mold; a mold positioning mechanism is provided at the bottom of the metal molds; and a system support is provided below the mold positioning mechanism.

[0007] Furthermore, the heating device includes a resistance wire and asbestos, with the resistance wire wrapped around the side wall outside the intermediate package and asbestos disposed on the outside of the resistance wire.

[0008] Furthermore, the mold positioning mechanism includes a sliding base, a bearing device, and a moving device. The bearing device includes a bearing bracket, a mold tray, and a mold tray seat. The mold tray seat is located at the center of the top surface of the bearing bracket. The mold tray is connected to the bearing bracket through the mold tray seat. The metal mold is placed on the mold tray. The sliding base is placed on the bearing bracket. The moving device is located below the bearing bracket.

[0009] Furthermore, the sliding base includes a slider, a lead screw, a transverse slide rail, a lead screw nut, and an inclined slide rail. The lead screw is horizontally installed through the mold tray base. Two lead screw nuts are symmetrically arranged on the lead screw, and a transverse slide rail is connected to each lead screw nut. The four inclined slide rails are symmetrically arranged along the center of the mold tray. One end of each inclined slide rail is connected to the mold tray, the middle section is slidably connected to a transverse slide rail through a slider, and the other end is provided with an inclined slide rail positioning nut.

[0010] Furthermore, the lead screw is provided with lead screw bearings at both ends, the bottom of the lead screw bearings is connected to the bearing bracket, and a lead screw handle is provided on the outside of the lead screw bearing at one end of the lead screw.

[0011] Furthermore, guide post positioning nuts are provided at both ends of the transverse slide rail.

[0012] Furthermore, the moving device includes a linear guide rail and a linear bearing. At least two linear bearings are provided on the system support. The linear guide rail passes through the linear bearings. The top of the linear bearing is connected to the support bracket. A threaded hole is provided on the outside of the linear bearing, and a brake handle is provided in the threaded hole.

[0013] Furthermore, a thermocouple is installed through the top cover, with the bottom of the thermocouple extending below the surface of the molten metal 5.

[0014] Furthermore, the top surface of the top cover is provided with heat insulation cotton.

[0015] Furthermore, the drainage mold is made of graphite.

[0016] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model, through the synergistic effect of the ultrasonic treatment system, heating device and thermocouple, can directly and fully ultrasonically treat the molten metal in the tundish before casting, thereby overcoming the defect of the modifier in the prior art that becomes ineffective due to transfer and static placement after treatment in the melting furnace, ensuring the stability of the grain refinement effect, thereby improving the strength, hardness and plasticity of the casting, and thus improving the comprehensive mechanical properties of zinc-aluminum alloy castings; 2. This utility model provides a stable and unobstructed flow channel for molten metal by using a graphite casting mold with a characteristic conical inlet. Utilizing the high temperature resistance and anti-adhesion properties of graphite, as well as the guiding effect of the conical inlet, it ensures that the molten metal is injected into the metal mold in a stable laminar flow state. The casting mold can be replaced according to the flow channel in the metal mold and the size of the casting, effectively solving the problems of molten metal splashing, leakage, and incomplete filling caused by unstable flow rate and ladle slippage in manual pouring. 3. This utility model achieves rapid and precise centering and clamping of the metal mold in the horizontal plane through the mold positioning mechanism. It can also move the metal mold precisely and lock it firmly at the pouring station, ensuring that the gate of the metal mold and the outlet of the pouring mold always maintain a very high degree of coaxiality. This fundamentally eliminates misalignment and splashing caused by alignment deviation or pouring impact, ensuring the repeatability of the pouring process and the consistency of the casting dimensions. 4. The ultrasonic casting system of this utility model enables ultrasonic treatment, temperature maintenance and precise casting to be completed at the same workstation, which simplifies the operation process, reduces the dependence on manual skills and improves the stability and efficiency of production. Attached Figure Description

[0017] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings: Figure 1 This is a front structural schematic diagram of an ultrasonic casting system for wear-resistant zinc-aluminum alloy castings according to the present invention. Figure 2 This is a top view schematic diagram of the sliding base and bearing device of an ultrasonic casting system for wear-resistant zinc-aluminum alloy castings according to the present invention. Figure 3 This is a partial front view of the moving device of the ultrasonic casting system for wear-resistant zinc-aluminum alloy castings described in this utility model. Figure 4 This is a cross-sectional structural schematic diagram of the moving device of the ultrasonic casting system for wear-resistant zinc-aluminum alloy castings according to the present invention. Figure 5 This is a cross-sectional structural diagram of the flow mold for an ultrasonic casting system for wear-resistant zinc-aluminum alloy castings, as described in this utility model.

[0018] In the picture: 1. Thermocouple; 2. Top rod; 3. Top cover; 4. Tundish; 5. Molten metal; 6. Drainage mold; 7. Metal mold; 8. Lead screw handle; 9. Support bracket; 10. Linear guide rail; 11. System support; 12. Transducer; 13. Ultrasonic generator; 14. Amplitude bar; 15. Insulation cotton; 16. Guide rod; 17. Heating device; 18. Casting; 19. Slider; 20. Linear bearing; 21. Brake handle; 22. Mold tray; 23. Lead screw bearing; 24. Lead screw; 25. Transverse slide rail; 26. Guide post positioning nut; 27. Mold tray seat; 28. Lead screw nut; 29. ​​Angled slide rail; 30. Angled slide rail positioning nut; 31. Drainage port. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of the present invention can be combined with each other, and the described embodiments are only some embodiments of the present invention, not all embodiments.

[0020] Detailed implementation method: See Figure 1-5This embodiment describes an ultrasonic casting system for wear-resistant zinc-aluminum alloy castings, comprising a tundish 4, an ultrasonic treatment system, a flow guide mold 6, and a mold positioning mechanism. The tundish 4 has a top cover 3 and a through hole at the bottom, within which the flow guide mold 6 is installed. A heating device 17 is located on the outside of the tundish 4, and molten metal 5 is stored within the tundish 4. A push rod 2 is inserted through the top cover 3, its bottom end plugged into the flow guide mold 6. The flow guide mold 6 has a conical flow port 31 inside. The flow guide mold 6 can adjust the flow according to the flow in different metal molds 7. The size of the casting and the flow path are adjusted accordingly. When a large flow rate of molten metal 5 is required, a larger flow mold 7 with a larger inlet 31 is used; when a small flow rate of molten metal 5 is required, a smaller flow mold 7 with a smaller inlet 31 is used. The tundish 4 is fixed by a movable ultrasonic degassing device, and its height can be adjusted as needed. The tundish 4 is used to hold and temporarily store molten metal 5. The top cover 3 mainly serves to insulate and prevent oxidation and contamination of the molten metal 5. The top rod 2 seals the inlet 31 of the flow mold 6 before pouring begins to prevent leakage of molten metal 5. When pouring is required, lifting the top rod 2 opens the inlet 31. 1. The conical inlet 31 can constrain the flow of molten metal 5, ensuring that the molten metal 5 can completely fill the mold during its flow from the inlet 31, and effectively avoiding instability and splashing caused by manual operation. The heating device 17 is used to provide continuous heat compensation, thereby maintaining the temperature of the molten metal 5 in the tundish 4 within the predetermined optimal pouring temperature range, overcoming the defects of traditional manual pouring where temperature is difficult to control precisely and easily leads to overheating or undercooling of the molten metal. The heating temperature range of the heating device 17 is 0~1000℃, and the pouring temperature range of the zinc-aluminum alloy is 580~680℃. The heating device 17 is electrically connected to a precision digital temperature controller with PID automatic adjustment function; the ultrasonic processing system includes a transducer 12, an ultrasonic generator 13, an amplitude transformer 14, and an induction rod 16; the induction rod 16 is disposed through the top cover 3, the bottom of the induction rod 16 extends below the surface of the molten metal 5, the top of the induction rod 16 is connected to the bottom of the amplitude transformer 14, the top of the amplitude transformer 14 is connected to the transducer 12, the transducer 12 is connected to the ultrasonic generator 13, the ultrasonic processing system is the key to solving the problem of coarse grains, and the ultrasonic generator 13 generates power in the range of 0.An electrical signal of 4~1kW drives the transducer 12 to convert the electrical signal into mechanical vibration of the same frequency. The amplitude transformer 14 amplifies the vibration amplitude generated by the transducer 12, and the guide rod 16 effectively introduces the amplified ultrasonic vibration energy into the molten metal 5 of the tundish 4. When the ultrasonic waves propagate in the melt, they generate strong cavitation and acoustic flow effects. These effects can break up growing dendrites, increase nucleation sites, and thus significantly refine the solidification structure of the alloy, improve the mechanical properties of the casting 18, and especially effectively avoid the problem of coarse grains caused by the failure of the modifier or uneven stirring. A metal mold 7 is arranged at intervals below the flow guide mold 6, and the distance between the flow guide mold 6 and the metal mold 7 is... A pouring space is formed. The metal mold 7 is located directly below the flow guide mold 6, used to receive the molten metal 5 and ultimately form the casting 18. A mold positioning mechanism is provided at the bottom of the metal mold 7. This mechanism can adjust the position of the metal mold 7 on the horizontal plane, ensuring that the pouring port of the metal mold 7 is precisely aligned with the flow guide port 31 of the flow guide mold 6. This precise alignment ensures that the molten metal 5 can be accurately and without deviation injected into the metal mold 7, solving quality problems such as splashing of molten metal 5, incomplete pouring of the casting 18, or unclear outline caused by misalignment. A system support 11 is provided below the mold positioning mechanism, serving as the basic support and installation platform for the entire ultrasonic casting system.

[0021] This invention effectively refines grains and improves the mechanical properties of castings through an ultrasonic treatment system; ensures temperature stability through a heating device 17 and a thermocouple 1; ensures pouring alignment and reduces splashing through a mold positioning mechanism; and controls the flow rate of molten metal through a conical outlet 31 of the flow mold 6 to achieve stable pouring.

[0022] The heating device 17 includes a resistance wire and asbestos. The resistance wire is wrapped around the side wall of the tundish 4, and asbestos is placed on the outside of the resistance wire. The resistance wire acts as a heating element, generating Joule heat when energized, converting electrical energy into heat energy, and uniformly and continuously heating the side wall of the tundish 4. This indirectly compensates for the heat loss of the molten metal 5 inside the tundish 4, preventing the temperature of the molten metal 5 from dropping due to heat loss during the pouring process. The asbestos serves as insulation, effectively reducing the heat loss from the resistance wire to the surrounding environment and concentrating the heat transfer to the tundish 4, thus improving heating efficiency. At the same time, the asbestos forms a safety barrier, preventing operators from accidentally touching the high-temperature resistance wire and getting burned, and protecting external equipment from high-temperature radiation. This application combines the active heating of the resistance wire with the passive insulation of the asbestos to form a simple, effective, and safe temperature maintenance system, solving problems such as poor fluidity of the molten metal, incomplete pouring, and internal defects in castings caused by temperature drops during manual pouring.

[0023] The mold positioning mechanism includes a sliding base, a bearing device, and a moving device. The bearing device is a component that supports and fixes the metal mold 7. The bearing device includes a bearing bracket 9, a mold tray 22, and a mold tray seat 27. The mold tray seat 27 is located at the center of the top surface of the bearing bracket 9. The mold tray 22 is connected to the bearing bracket 9 through the mold tray seat 27. The metal mold 7 is placed on the mold tray 22. The sliding base is placed on the bearing bracket 9. The moving device is located below the bearing bracket 9. The bearing bracket 9 provides an installation base for the sliding base and the moving device and transfers the weight of the metal mold 7 to the system support 11. The mold tray seat 27 is used to support the mold tray 22. The mold tray 22 is used to receive the metal mold 7. The sliding base is used to fix the four corner areas of the metal mold 7, so that the metal mold 7 is fixed on the mold tray 22. The moving device is used to adjust the horizontal position of the bearing bracket 9. The moving device can move the bearing bracket 9, on which the metal mold 7 is placed, directly below the casting mold 6, thereby facilitating casting.

[0024] The sliding base includes a slider 19, a lead screw 24, a horizontal slide rail 25, a lead screw nut 28, and an inclined slide rail 29. The lead screw 24 is horizontally installed through the mold tray seat 27. The two ends of the lead screw 24 have threads with opposite directions of rotation. Two lead screw nuts 28 are symmetrically arranged on the lead screw 24. The lead screw 24 converts its own rotational motion into the linear motion of the lead screw nuts 28, so that when the lead screw 24 rotates, the two lead screw nuts 28 perform synchronous, opposite, or parallel linear motions. Each lead screw nut 28 is connected to a... A transverse slide rail 25 and four inclined slide rails 29 are symmetrically arranged around the center of the mold tray 22. One end of each inclined slide rail 29 is connected to the mold tray 22, and the middle section is slidably connected to a transverse slide rail 25 via a slider 19. The other end is provided with an inclined slide rail positioning nut 30. The transverse slide rail 25 provides a sliding track for the slider 19. When the two lead screw nuts 28 perform synchronous opposite or backward linear movements, they drive the two transverse slide rails 25 to perform synchronous opposite or backward linear movements along the length of the lead screw. The slider... 19 is the movable node connecting the transverse slide rail 25 and the inclined slide rail 29. The inclined slide rail 29 is used to convert the linear motion of the transverse slide rail 25 into the simultaneous inward contraction or outward expansion of the four sliders 19. When the two transverse slide rails 25 move synchronously in opposite directions along the length of the lead screw, the four sliders 19 are moved together by the transverse slide rails 25. At the same time, the inclined slide rail 29 restricts the sliders 19 from moving obliquely. Therefore, when the lead screw 24 rotates, the four sliders 19 simultaneously contract inward or expand outward. When block 19 retracts inward, it clamps the four corner areas of the metal mold 7, fixing the metal mold 7 in the center position of the mold tray 22. When slider 19 expands outward, it releases the metal mold 7. The inclined slide rail positioning nut 30 is used to adjust and limit the effective length of the inclined slide rail 29 during operation, thereby ensuring that the four clamping points can simultaneously and evenly contact the four corner areas of the metal mold 7 and apply a stable and balanced radial clamping force to the metal mold 7, achieving precise centering and preventing the mold from shifting or tilting in the clamped state.

[0025] Both ends of the lead screw 24 are provided with lead screw bearings 23. The bottom of the lead screw bearings 23 is connected to the bearing bracket 9. The lead screw bearings 23 are used to support the lead screw 24, so that the lead screw 24 can rotate stably around the axis of the lead screw 24. At the same time, they bear the axial and radial loads transmitted by the lead screw nut 28, ensuring the rigidity and motion accuracy of the entire transmission system, preventing the lead screw 24 from deflecting or vibrating when under force, and ensuring the smoothness and accuracy of the centering process. A lead screw handle 8 is provided on the outside of the lead screw bearing 23 at one end of the lead screw 24. By manually turning the lead screw handle 8, the operator can easily transmit torque to the lead screw 24 and drive the lead screw 24 to rotate, so that the movement of the entire sliding base can be precisely controlled without the aid of power tools.

[0026] The transverse slide rail 25 is provided with guide post positioning nuts 26 at both ends. The guide post positioning nuts 26 are used to limit the sliding stroke of the slider 19 on the transverse slide rail 25, and prevent the slider 19 from coming off the end of the transverse slide rail 25 during the sliding process, thereby ensuring the integrity and operational reliability of the sliding base.

[0027] The moving device includes a linear guide rail 10 and linear bearings 20. At least two linear bearings 20 are mounted on the system support 11. The linear guide rail 10 passes through the linear bearings 20. The top of each linear bearing 20 is connected to a support bracket 9. A threaded hole is provided on the outer side of each linear bearing 20, and a brake handle 21 is installed within the threaded hole. The linear guide rail 10 provides a precise and predetermined linear motion trajectory for the support bracket 9, ensuring that the support bracket 9 can only move in a predetermined horizontal direction. This guarantees that the metal mold 7 mounted on the support bracket 9 can be accurately mounted from the side. The support frame is transported to the casting station directly below and precisely aligned with the upper runoff mold 6. The linear bearing 20 supports the entire support bracket 9 and all the loads on it, and allows the support bracket 9 to slide linearly along the linear guide rail 10 via the linear bearing. The brake handle 21 is the locking component of the moving device. When the brake handle 21 is rotated and tightened, the end of the brake handle 21 will radially press against the linear guide rail 10, thereby effectively preventing the support bracket 9 from moving unexpectedly during the casting process and ensuring the static and stable relative position of the metal mold 7 and the runoff mold 6.

[0028] A thermocouple 1 is installed through the top cover 3, with its bottom extending below the surface of the molten metal 5. The thermocouple 1 is used to detect the actual temperature of the molten metal in the tundish 4 in real time and accurately. The temperature signal fed back by the thermocouple 1 is transmitted to a precision digital temperature controller with PID automatic adjustment function. The PID controller can automatically and accurately calculate and output control signals, and can dynamically adjust the power output of the heating device 17, thereby realizing automatic control of the temperature of the molten metal 5 in the tundish 4, so that the temperature control accuracy of the molten metal 5 is stable within ±5℃, providing a continuous and stable temperature guarantee for ultrasonic treatment and casting.

[0029] The top surface of the top cover 3 is provided with heat insulation cotton 15. By providing heat insulation cotton 15 on the top surface of the top cover 3, the heat dissipation of the intermediate package 4 to the external environment through the top cover 3 is reduced.

[0030] The flow guide mold 6 is made of graphite, which has an extremely high melting point and excellent thermal stability. It can withstand the high temperature of the zinc-aluminum alloy melt without softening, melting, or chemically reacting with the alloy melt, thereby ensuring the long-term stability of the shape of the flow guide 31 and the purity of the pouring process. It can also effectively prevent the molten metal from sticking to the surface of the flow channel during solidification, ensuring that the flow channel is unobstructed after each pouring, avoiding blockage, and ensuring the repeatability and reliability of the pouring process.

[0031] The working principle of this utility model is as follows: Step 1: Complete the smelting and pretreatment of molten metal 5 according to the established batching process. First, place aluminum in the smelting furnace and heat it until it is completely melted. Then, add intermediate alloys such as aluminum-copper alloy and aluminum-cobalt alloy. Keep the furnace temperature up and stir gently until the intermediate alloys are completely dissolved. Next, add zinc to lower the temperature to the casting requirements. After the alloy is completely melted, argon gas is introduced for degassing. After removing the slag, let it stand for 10 minutes. Add the modifier, stir thoroughly, and let it stand for 10 minutes. After the melt composition is qualified, transfer the molten metal into the intermediate ladle 4 of the ultrasonic casting system. Step 2: After the molten metal is poured into the tundish 4, the molten metal 5 in the tundish 4 is kept warm by the heating device 17 around the tundish 4, and the temperature is fed back by the thermocouple 1 to ensure that the molten metal 5 is kept stable at the pouring temperature. Step 3: Install the support bracket 9 on the linear guide rail 10, and move the support bracket 9 to the assembly station of the mold through the linear guide rail 10. Turn the brake handle 21 to fix the support bracket 9 in the assembly station. Place the metal mold 7 on the mold tray 22. Shake the lead screw handle 8 to rotate the lead screw 24, which drives the lead screw nut 28 to move along the axial direction of the lead screw 24. The two transverse slide rails 25 retract inward, forcing the four sliders 19 connected to the two transverse slide rails 25 to slide along the transverse slide rails 25. While the four sliders 19 slide along the transverse slide rails 25, they drive the inclined slide rail 29 to slide radially toward the center of the mold tray 22. Finally, the precise centering and clamping of the metal mold 7 is achieved through the synchronous centripetal movement of the four sliders 19. Step 4: Slide the support bracket 9 into the pouring station along the linear guide rail 10, and fix the support bracket 9 by using the brake handle 21, so as to ensure that the gate of the metal mold 7 is aligned with the outlet 31 of the pouring mold 6 and remains stationary. Step 5: Once the metal mold 7 is ready and the molten metal 5 in the intermediate ladle 4 has reached the pouring temperature and been kept warm, start the ultrasonic generator 13. Through the transducer 12 and the amplitude transformer 14, the ultrasonic waves are introduced into the molten metal 5 via the guide rod 16. The ultrasonic treatment lasts for 10 to 20 minutes. After the ultrasonic action is stopped, lift the top rod 2. Under the action of gravity, the molten metal 5 is accurately guided into the metal mold 7 through the drain port 31 of the flow mold 6, thereby ensuring the casting 18 is formed.

[0032] The specific embodiments of this utility model disclosed above are merely illustrative of the present utility model. These specific embodiments do not exhaustively describe all details, nor do they limit the utility model to only the described embodiments. Many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it.

Claims

1. An ultrasonic casting system for wear-resistant zinc-aluminum alloy castings, characterized in that: The system includes an intermediate liner (4), an ultrasonic processing system, a flow-draining mold (6), and a mold positioning mechanism. The intermediate liner (4) has a top cover (3) at the top and a through hole at the bottom. The flow-draining mold (6) is located inside the through hole. A heating device (17) is located on the outside of the intermediate liner (4). Molten metal (5) is stored inside the intermediate liner (4). A push rod (2) is installed through the top cover (3). The bottom of the push rod (2) is inserted into the flow-draining mold (6). A flow-draining port (31) is located inside the flow-draining mold (6), and the flow-draining port (31) has a conical structure. The ultrasonic processing system includes a transducer (12). An ultrasonic generator (13), an amplitude transformer (14), and an inlet rod (16) are provided; the inlet rod (16) is provided through the top cover (3), the bottom of the inlet rod (16) extends below the surface of the molten metal (5), the top of the inlet rod (16) is connected to the bottom of the amplitude transformer (14), the top of the amplitude transformer (14) is connected to the transducer (12), and the transducer (12) is connected to the ultrasonic generator (13); metal molds (7) are provided at intervals below the drainage mold (6), a mold positioning mechanism is provided at the bottom of the metal mold (7), and a system support (11) is provided below the mold positioning mechanism.

2. The ultrasonic casting system for wear-resistant zinc-aluminum alloy castings according to claim 1, characterized in that: The heating device (17) includes a resistance wire and asbestos. The resistance wire is wrapped around the side wall outside the intermediate package (4), and asbestos is placed on the outside of the resistance wire.

3. The ultrasonic casting system for wear-resistant zinc-aluminum alloy castings according to claim 1, characterized in that: The mold positioning mechanism includes a sliding base, a bearing device, and a moving device. The bearing device includes a bearing bracket (9), a mold tray (22), and a mold tray seat (27). The mold tray seat (27) is located at the center of the top surface of the bearing bracket (9). The mold tray (22) is connected to the bearing bracket (9) through the mold tray seat (27). The metal mold (7) is placed on the mold tray (22). The sliding base is placed on the bearing bracket (9). The moving device is located below the bearing bracket (9).

4. The ultrasonic casting system for wear-resistant zinc-aluminum alloy castings according to claim 3, characterized in that: The sliding base includes a slider (19), a lead screw (24), a transverse slide rail (25), a lead screw nut (28), and an inclined slide rail (29). The lead screw (24) is horizontally installed through the mold tray seat (27). Two lead screw nuts (28) are symmetrically arranged on the lead screw (24). A transverse slide rail (25) is connected to each lead screw nut (28). The four inclined slide rails (29) are symmetrically arranged along the center of the mold tray (22). One end of each inclined slide rail (29) is connected to the mold tray (22), the middle section is slidably connected to a transverse slide rail (25) through the slider (19), and the other end is provided with an inclined slide rail positioning nut (30).

5. The ultrasonic casting system for wear-resistant zinc-aluminum alloy castings according to claim 4, characterized in that: The lead screw (24) is provided with lead screw bearings (23) at both ends. The bottom of the lead screw bearings (23) is connected to the support bracket (9). A lead screw handle (8) is provided on the outside of the lead screw bearing (23) at one end of the lead screw (24).

6. The ultrasonic casting system for wear-resistant zinc-aluminum alloy castings according to claim 4, characterized in that: The transverse slide rail (25) is provided with guide post positioning nuts (26) at both ends.

7. The ultrasonic casting system for wear-resistant zinc-aluminum alloy castings according to claim 3, characterized in that: The moving device includes a linear guide rail (10) and a linear bearing (20). At least two linear bearings (20) are provided on the system bracket (11). The linear guide rail (10) passes through the linear bearing (20). The top of the linear bearing (20) is connected to the support bracket (9). A threaded hole is provided on the outside of the linear bearing (20), and a brake handle (21) is provided in the threaded hole.

8. The ultrasonic casting system for wear-resistant zinc-aluminum alloy castings according to claim 1, characterized in that: A thermocouple (1) is installed through the top cover (3), and the bottom of the thermocouple (1) extends below the surface of the molten metal (5).

9. The ultrasonic casting system for wear-resistant zinc-aluminum alloy castings according to claim 1, characterized in that: The top surface of the top cover (3) is provided with heat insulation cotton (15).

10. The ultrasonic casting system for wear-resistant zinc-aluminum alloy castings according to claim 1, characterized in that: The drainage mold (6) is made of graphite.

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