Aluminum alloy cast diverter, casting apparatus, method, castings, end products

Abstract

The present application relates to a kind of aluminum alloy casting diverter, casting equipment, method, casting, end product, involve aluminum alloy casting field, including: diverter body, inductive heater being arranged around diverter body;Inductive heater includes: in order to be arranged heat preservation layer, induction coil and magnetic shield layer;Inductive heater is equipped with driving device.The diverter provided in the present application adopts electromagnetic induction heating technology, by real-time observation aluminum liquid temperature change, and according to this dynamic adjustment electromagnetic induction heating power, temperature sensor can be compared simultaneously with theoretical value by using closed-loop control strategy, the actual temperature of aluminum liquid collected, by adjusting the current frequency and intensity of electromagnetic coil, ensure that diverter temperature is stably in the best process range, both play the technical advantages of electromagnetic induction heating fast response, temperature control accurate, also effectively avoid temperature control failure caused by sudden working condition by artificial experience judgment, significantly improve the reliability and product consistency of production process.

Description

Technical Field

[0001] This invention relates to the field of aluminum alloy casting, specifically to an aluminum alloy casting distributor, casting equipment, method, casting, and end product. Background Technology

[0002] Cast aluminum alloys, as key materials in modern manufacturing, play an irreplaceable role in the automotive, electronics, and aerospace industries. Their excellent specific strength, good casting properties, and corrosion resistance make them the preferred material for achieving lightweighting. Especially against the backdrop of the rapid development of new energy vehicles, aluminum alloy die-castings are increasingly widely used in key components such as vehicle body structures and battery pack housings.

[0003] A typical aluminum alloy casting production process includes steps such as raw material inspection, melting, alloy addition, stirring and homogenization, degassing, casting, dimensional measurement, quality inspection, composition analysis, and packaging. Among these, casting is the core process and has strict requirements on casting temperature.

[0004] For example, CN211135442U discloses a micro aluminum alloy ingot continuous casting device, including a melting furnace, a casting component, a transfer component, and a storage box. The casting component includes a mounting frame, which has two sets, and gears are provided on both sides inside the mounting frame. The gears are driven by a stepper motor, and a chain connects the two sets of gears of the mounting frame. The application process is as follows: aluminum liquid is poured into a collection hopper through the melting furnace, and the aluminum liquid is sequentially and quantitatively discharged into the corresponding shaping tank through the outlet of the liquid outlet pipe by a distributor. Then, the gear rotation drives the chain to transport the template. Cooling liquid is sequentially sprayed into the shaping tank through the cooling pipe to cool the aluminum liquid into an ingot shape. Finally, the aluminum alloy ingot is transported into the transfer component. The aluminum alloy ingot is transferred by the transfer component. During the transfer process, manual inspection can be performed. Finally, the qualified aluminum alloy ingot is sent into the storage box.

[0005] In the production of cast aluminum alloys, the temperature control of the distributor is a key factor affecting product quality. For example, CN206028699U discloses an electrically heated distributor, including a distributor mechanism, a distributor cavity mechanism, and a heating and insulation mechanism. The distributor mechanism has a distributor, a riser pipe mating groove in its lower end face, and a distributor pipe groove and a distributor pipe in its upper end face. The distributor cavity mechanism is located within the distributor and includes a main channel in the riser pipe mating groove and a distributor channel in the mold mating groove. The lower end of the distributor channel is connected to the upper end of the main channel, and a liquid surface contact point is provided at the upper opening of the distributor channel. The heating and insulation mechanism includes an electric heating jacket on the outer wall of the distributor, an insulation jacket on the outer wall of the electric heating jacket, an electric heating core in the center of the distributor, and a vacuum insulation cone in the center of the electric heating core.

[0006] However, traditional preheating technologies have many technical bottlenecks. For example, gas or resistance heating rod preheating heats the distributor through an external heat source (such as a flame torch or electric heating rod), which limits the heating area and easily causes local overheating (>500℃) or low temperature zones (<250℃), resulting in unstable aluminum liquid flow. At the same time, the thermal efficiency is less than 40%, and the energy consumption is too high. Thermocouple + PID control preheating can achieve basic temperature control, but the high temperature aluminum liquid scouring will cause the thermocouple to have a short lifespan and cannot compensate for the heat changes caused by the aluminum liquid flow in real time.

[0007] In summary, existing distributor heating solutions suffer from poor heating effects and uneven heating, which can lead to unstable aluminum liquid flow, causing distributor solidification and blockage, and quality defects such as shrinkage cavities and cracks in cast products, seriously affecting production efficiency and product qualification rate. Summary of the Invention

[0008] In view of the problems existing in the prior art, the purpose of the present invention is to provide an aluminum alloy casting distributor, casting equipment, method, casting, and end product, so as to solve the problem that the existing distributor heating scheme still leads to unstable aluminum liquid flow due to poor heating effect and uneven heating, which causes the distributor to solidify and block, and quality defects such as shrinkage cavities and cracks in the casting products.

[0009] To achieve this objective, the present invention adopts the following technical solution:

[0010] In a first aspect, the present invention provides an aluminum alloy casting diverter, the aluminum alloy casting diverter comprising:

[0011] A shunt body, and an induction heater arranged around the shunt body;

[0012] The induction heater includes: a heat insulation layer, an induction coil, and a magnetic shielding layer arranged sequentially;

[0013] The induction heater is equipped with a drive device.

[0014] The shunt provided by this invention adopts electromagnetic induction heating technology. By observing the temperature change of the molten aluminum in real time, the electromagnetic induction heating power is dynamically adjusted accordingly. At the same time, a closed-loop control strategy can be adopted to compare the actual temperature of the molten aluminum collected by the temperature sensor with the theoretical value. By adjusting the current frequency and intensity of the electromagnetic coil, the temperature of the shunt is ensured to remain stable within the optimal process range. This not only leverages the technical advantages of electromagnetic induction heating, such as fast response and accurate temperature control, but also effectively avoids temperature control failures caused by sudden operating conditions through human experience judgment, significantly improving the reliability of the production process and product consistency.

[0015] As a preferred embodiment of the present invention, the induction coil has a spiral structure.

[0016] Preferably, the induction coil has 14-16 turns.

[0017] Preferably, the induction coil includes: a first winding and a second winding arranged sequentially, wherein the first winding has 6-7 turns.

[0018] Preferably, the thickness of the insulation layer is 20-30 mm.

[0019] Preferably, the thickness of the magnetic shielding layer is 20-30 mm.

[0020] Preferably, the aluminum alloy casting shunt is equipped with a temperature monitoring device.

[0021] Preferably, the induction coil is connected to a power supply module, and the power supply module is connected to a control module.

[0022] Preferably, the control module is connected to the temperature monitoring device and the drive device respectively.

[0023] In a second aspect, the present invention provides an aluminum alloy casting device, the aluminum alloy casting device including the aluminum alloy casting distributor as described in the first aspect.

[0024] As a preferred technical solution of the present invention, the aluminum alloy casting equipment includes: an aluminum alloy liquid supply end, and a flow channel connecting the aluminum alloy liquid supply end and the aluminum alloy casting distributor.

[0025] Thirdly, the present invention provides an aluminum alloy casting method, the aluminum alloy casting method comprising:

[0026] The aluminum alloy casting distributor described in the first aspect is preheated to a set temperature using induction heating, and then the set temperature is maintained by feeding aluminum alloy liquid into the aluminum alloy casting distributor through the flow channel from the aluminum alloy liquid supply end for casting.

[0027] As a preferred embodiment of the present invention, the power of the induction heating is 30-40kW.

[0028] Preferably, the voltage for induction heating is 500-600V.

[0029] Preferably, the current intensity of the induction heating is 60-70A.

[0030] As a preferred embodiment of the present invention, the preheating time is 10-25 minutes.

[0031] As a preferred technical solution of the present invention, the set temperature is 250-400℃.

[0032] Fourthly, the present invention provides an aluminum alloy casting, wherein the aluminum alloy is obtained by casting using an aluminum alloy casting distributor as described in the first aspect, an aluminum alloy casting equipment as described in the second aspect, or an aluminum alloy casting method as described in the third aspect.

[0033] Fifthly, the present invention provides an end product, the end product comprising the aluminum alloy casting as described in the fourth aspect.

[0034] Compared with existing technical solutions, the present invention has the following beneficial effects:

[0035] The aluminum alloy casting shunt provided by this invention utilizes electromagnetic induction heating. By placing insulation material between the shunt and the induction coil, heat loss during the heating process is reduced, preheating time is shortened, and insulation effect is enhanced. An outer magnetic shielding layer is added to constrain the outward diffusion of leakage magnetic field from the induction coil, thereby improving the efficiency of induction heating. This achieves precise temperature control of the shunt. Furthermore, during preheating, mobile heating can be achieved through a driving device to avoid localized high temperatures caused by magnetic field concentration, resulting in more uniform preheating and insulation of the shunt. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of an aluminum alloy casting diverter provided in an embodiment of the present invention;

[0037] Figure 2 This is a schematic diagram of the aluminum alloy casting equipment provided in an embodiment of the present invention.

[0038] In the diagram: 100-shunt body, 110-insulation layer, 120-induction coil, 130-magnetic shielding layer, 140-drive device, 150-temperature monitoring device, 200-aluminum alloy liquid supply end, 300-flow channel.

[0039] The present invention will now be described in further detail. However, the examples described below are merely simplified examples of the present invention and do not represent or limit the scope of protection of the present invention. The scope of protection of the present invention is determined by the claims. Detailed Implementation

[0040] To better illustrate the present invention and facilitate understanding of its technical solutions, typical but non-limiting embodiments of the present invention are as follows:

[0041] Cast aluminum alloys, as key materials in modern manufacturing, play an irreplaceable role in the automotive, electronics, and aerospace industries. Their excellent specific strength, good casting performance, and corrosion resistance make them the preferred material for achieving lightweighting. In the production process of cast aluminum alloys, the temperature control of the manifold is a crucial factor affecting product quality. However, existing manifold heating schemes suffer from poor heating effects and uneven heating, leading to unstable aluminum melt flow, manifold solidification and blockage, and quality defects such as shrinkage cavities and cracks in the cast products. This severely impacts production efficiency and product yield. Therefore, this invention optimizes the heating components of the manifold to ensure that the manifold maintains the aluminum alloy melt within a reasonable temperature range, avoiding temperature fluctuations and thus guaranteeing the excellent performance of the cast aluminum alloy. Specifically:

[0042] I. This embodiment provides an aluminum alloy cast diverter, such as... Figure 1 As shown, the aluminum alloy casting diverter includes:

[0043] A shunt body 100, and an induction heater disposed around the shunt body 100;

[0044] The induction heater includes: a heat insulation layer 110, an induction coil 120 and a magnetic shielding layer 130 arranged sequentially;

[0045] The induction heater is equipped with a drive device 140.

[0046] In this invention, the distributor body 100 refers to the device that evenly distributes the molten aluminum alloy to each branch gating channel. It can be designed reasonably according to the conventional requirements in the field.

[0047] In this invention, the induction coil 120 has a spiral structure.

[0048] In this invention, the relevant parameters of the spiral structure can be reasonably designed according to the conventional requirements in the field of induction heating.

[0049] In this invention, the number of turns of the induction coil 120 is 14-16 turns, for example, it can be 14 turns, 15 turns or 16 turns, but it is not limited to the listed values. Other unlisted values ​​within this range are also acceptable.

[0050] In this invention, the induction coil 120 includes a first winding and a second winding arranged sequentially, wherein the first winding has 6-7 turns.

[0051] In this invention, the number of turns of the second winding is the number of turns of the induction coil 120 minus the number of turns of the first winding.

[0052] In this invention, the material of the induction coil 120 can be reasonably selected according to the conventional requirements in the field, such as oxygen-free copper tube. The dimensions (inner diameter and outer diameter) of the oxygen-free copper tube can be reasonably designed according to the conventional requirements in the field of induction heating, with an inner diameter of 7-8 mm and a wall thickness of 2-4 mm.

[0053] In this invention, the thickness of the insulation layer 110 is 20-30mm, for example, it can be 20mm, 21mm, 22mm, 23mm, 24mm, 25mm, 26mm, 27mm, 28mm, 29mm or 30mm, but is not limited to the listed values. Other unlisted values ​​within this range also meet the requirements.

[0054] In this invention, the height of the induction coil 120 can be reasonably designed according to actual needs. For example, the height of the induction coil 120 can be controlled to be 45-100% of the length of the shunt, such as 45%, 50.5%, 56%, 61.5%, 67%, 72.5%, 78%, 83.5%, 89%, 94.5% or 100%, etc., but is not limited to the listed values. Other unlisted values ​​within this range also meet the requirements.

[0055] In this invention, the material of the insulation layer 110 can be reasonably selected according to the conventional requirements in the field to ensure that it has the insulation effect, such as rock wool, glass wool, aluminum silicate, polyurethane, ceramic fiber wool, etc.

[0056] In this invention, the ceramic fiber cotton comprises, by weight percentage: 45-50% Al2O3 fiber, with the remainder being SiO2 fiber, and commercially available products can be selected according to regulations.

[0057] In this invention, the thickness of the magnetic shielding layer 130 is 20-30mm, for example, it can be 20mm, 21mm, 22mm, 23mm, 24mm, 25mm, 26mm, 27mm, 28mm, 29mm or 30mm, but is not limited to the listed values. Other unlisted values ​​within this range also meet the requirements.

[0058] In this invention, the purpose of the magnetic shielding layer 130 is to constrain the outward diffusion of leakage magnetic flux from the induction coil, thereby improving the efficiency of induction heating. The specific material can be reasonably selected according to the conventional requirements in the field, such as a yoke iron, for example, 1J79 material, or silicon steel sheet 50W470, etc.

[0059] In this invention, the aluminum alloy casting shunt is equipped with a temperature monitoring device 150.

[0060] In this invention, the temperature monitoring device 150 refers to a device used to perform temperature testing, such as a temperature sensor, an infrared thermometer, etc. Specifically, it can be configured with a shunt inlet or use an infrared field to monitor the entire temperature field of the shunt.

[0061] In this invention, the induction coil 120 is connected to a power supply module, and the power supply module is connected to a control module.

[0062] In this invention, the driving device 140 drives the induction heater to reciprocate along the liquid flow direction of the distributor body 100. The specific movement process is reasonably designed according to the heating requirements. For example, a gear-rack / chain mechanism is set up, and the gear is driven by the motor to drive the rack / chain to make linear reciprocating motion. At this time, the rack / chain is parallel to the axis of the distributor body 100, and the rack / chain is connected to the induction heater through rods or the like.

[0063] In this invention, the control module is connected to the temperature monitoring device 150 and the drive device 140 respectively.

[0064] In this invention, through linkage control in the control center, intelligent control of the heating parameters of the induction coil 120 can be achieved with the help of the temperature monitoring device 150. At the same time, artificial intelligence algorithms are introduced into the control center, which can further combine historical data to achieve efficient and precise temperature regulation.

[0065] In this invention, the control center can be selected as an industrial computer, PLC controller, etc., depending on the requirements.

[0066] II. This embodiment provides an aluminum alloy casting equipment, such as... Figure 2 As shown, the aluminum alloy casting equipment includes the aluminum alloy casting distributor.

[0067] In this invention, the aluminum alloy casting equipment includes: an aluminum alloy liquid supply end 200, and a flow channel 300 connecting the aluminum alloy liquid supply end 200 and the aluminum alloy casting distributor.

[0068] III. This embodiment provides an aluminum alloy casting method, which includes:

[0069] The aluminum alloy casting distributor is preheated to a set temperature using induction heating. Then, while maintaining the set temperature, molten aluminum alloy is fed into the aluminum alloy casting distributor through the flow channel from the molten aluminum alloy supply end for casting.

[0070] In this invention, the power of the induction heating is 30-40kW, for example, it can be 30kW, 31kW, 32kW, 33kW, 34kW, 35kW, 36kW, 37kW, 38kW, 39kW or 40kW, etc., but is not limited to the listed values. Other unlisted values ​​within this range are also acceptable.

[0071] In this invention, the voltage for induction heating is 500-600V, for example, it can be 500V, 510V, 520V, 530V, 540V, 550V, 560V, 570V, 580V, 590V or 600V, etc., but is not limited to the listed values. Other unlisted values ​​within this range are also acceptable.

[0072] In this invention, the current intensity of the induction heating is 60-70A, for example, it can be 60A, 61A, 62A, 63A, 64A, 65A, 66A, 67A, 68A, 69A or 70A, but is not limited to the listed values. Other unlisted values ​​within this range are also acceptable.

[0073] In this invention, the preheating time is 10-25 min, for example, it can be 10 min, 11.5 min, 13 min, 14.5 min, 16 min, 17.5 min, 19 min, 20.5 min, 22 min, 23.5 min or 25 min, but is not limited to the listed values. Other unlisted values ​​within this range are also acceptable.

[0074] In this invention, the set temperature is 250-400℃, for example, it can be 250℃, 265℃, 280℃, 295℃, 310℃, 325℃, 340℃, 355℃, 370℃, 385℃ or 400℃, etc., but is not limited to the listed values, and other unlisted values ​​within this range also meet the requirements.

[0075] IV. This embodiment provides an aluminum alloy casting, wherein the aluminum alloy is obtained by casting using the aluminum alloy casting distributor, the aluminum alloy casting equipment, or the aluminum alloy casting method described above.

[0076] V. This embodiment provides a terminal product, which includes the aforementioned aluminum alloy casting.

[0077] VI. To illustrate the temperature control effect achievable by the aluminum alloy casting shunt provided by this invention, the following example is used for explanation:

[0078] Example 1

[0079] This embodiment provides an aluminum alloy casting shunt, comprising: a shunt, a servo motor, a temperature sensor, an induction coil, an insulation layer, and a yoke.

[0080] 1) The shunt is made of heat-resistant cast steel. As a conductor, an induction coil is wrapped around the outer layer. Using the principle of electromagnetic induction heating, an alternating voltage is applied to both ends of the coil. The alternating current generates an alternating magnetic field through the coil, forming eddy currents inside the shunt (conductive material) to achieve heating.

[0081] 2) A layer of ceramic fiber insulation material (commercially available ceramic fiber cotton, with a mass percentage of 45% Al2O3 fiber and 55% SiO2 fiber) is applied between the shunt and the coil, with an overall thickness of 25mm. This reduces heat loss during the heating process, shortens preheating time, and enhances the insulation effect. A yoke (50W470 silicon steel sheet) with an overall thickness of 25mm is added to the outer layer of the coil to constrain the outward diffusion of the leakage magnetic flux of the induction coil, improving the efficiency of induction heating. A temperature sensor is used to detect the temperature of the molten aluminum inside the shunt in real time.

[0082] 3) The shunt has a maximum diameter of 400mm, a height of 330mm, and a thickness of 20mm. For the shunt, the induction coil is designed with 15 turns of oxygen-free copper tube (TU1, purity 99.97%, inner and outer diameters 7mm and 10mm respectively), wound into a spiral structure with an inner diameter of 460mm and a height of 160mm, with segmented windings (the first group has 7 turns and the second group has 8 turns) to optimize heating uniformity. The operating frequency is set to 8kHz to ensure that the skin depth matches the shunt wall thickness. The input power is 36kW, the operating voltage is 550V, and the current intensity is 65A.

[0083] 4) After completing the fine melting, the manifold is preheated. The preheating time and holding temperature of the manifold vary depending on the type of aluminum alloy. For example, for 3-series aluminum alloys (Al-Mn), the aluminum liquid has poor fluidity, so the preheating time is 15-25 minutes and the holding temperature of the manifold is around 350℃-400℃. For 4-series aluminum alloys (Al-Si), the aluminum liquid has good fluidity, so the preheating time is 10-15 minutes and the holding temperature of the manifold is around 250℃-300℃, after which casting can be carried out.

[0084] 5) During preheating, mobile heating can be achieved through guide rails and servo motors to avoid local high temperatures caused by concentrated magnetic fields, resulting in more uniform preheating of the shunt.

[0085] Application Example 1

[0086] The aluminum alloy casting distributor provided in Example 1 was used to cast aluminum alloy, specifically 3003 series aluminum alloy. The holding temperature of the distributor was controlled at 400℃ and the preheating time was 20min.

[0087] Application Example 2

[0088] The aluminum alloy casting distributor provided in Example 1 was used to cast aluminum alloy, specifically 4A01 series aluminum alloy. The temperature of the distributor was controlled at 300°C and the preheating time was 15 min.

[0089] Application Example 3

[0090] The only difference from Application Example 1 is that the number of turns of the induction coil is 10, and the first group is controlled with 4 turns and the second group with 6 turns.

[0091] Application Example 4

[0092] The only difference from Application Example 1 is that the number of turns of the induction coil is 19, and the first group is controlled with 9 turns and the second group with 10 turns.

[0093] Comparative Application Example 1

[0094] The only difference from Application Example 1 is that the induction heater does not have insulation material, i.e., ceramic fiber.

[0095] Comparative Application Example 2

[0096] The only difference from Application Example 1 is that the induction heater does not have a magnetic shielding layer, i.e., a yoke.

[0097] In the casting process of the above application examples and comparative application examples, the temperature of the distributor was monitored by infrared thermometry equipment, and the porosity of the castings was tested by X-ray tomography. The specific results are shown in Table 1.

[0098] Table 1

[0099]

[0100] As shown in Table 1, the shunt provided by this invention adopts electromagnetic induction heating technology. By observing the temperature change of the molten aluminum in real time, the electromagnetic induction heating power is dynamically adjusted accordingly. At the same time, a closed-loop control strategy can be adopted to compare the actual temperature of the molten aluminum collected by the temperature sensor with the theoretical value. By adjusting the current frequency and intensity of the electromagnetic coil, the temperature of the shunt is ensured to remain stable within the optimal process range. This not only leverages the technical advantages of electromagnetic induction heating, such as fast response and accurate temperature control, but also effectively avoids temperature control failures caused by sudden operating conditions through human experience judgment, significantly improving the reliability of the production process and product consistency.

[0101] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the protection scope of the present invention.

[0102] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not describe the various possible combinations separately.

[0103] Furthermore, various different embodiments of the present invention can be combined in any way, as long as they do not violate the spirit of the present invention, they should also be regarded as the content disclosed by the present invention.

Claims

1. An aluminum alloy casting diverter, characterized in that, The aluminum alloy casting diverter includes: A shunt body, and an induction heater arranged around the shunt body; The induction heater includes: a heat insulation layer, an induction coil, and a magnetic shielding layer arranged sequentially; The induction heater is equipped with a drive device.

2. The aluminum alloy casting diverter as described in claim 1, characterized in that, The induction coil has a spiral structure; Preferably, the induction coil has 14-16 turns; Preferably, the induction coil includes: a first winding and a second winding arranged sequentially, wherein the first winding has 6-7 turns; Preferably, the thickness of the insulation layer is 20-30 mm; Preferably, the thickness of the magnetic shielding layer is 20-30 mm; Preferably, the aluminum alloy casting shunt is equipped with a temperature monitoring device; Preferably, the induction coil is connected to a power supply module, and the power supply module is connected to a control module; Preferably, the control module is connected to the temperature monitoring device and the drive device respectively.

3. An aluminum alloy casting equipment, characterized in that, The aluminum alloy casting equipment includes an aluminum alloy casting distributor as described in claim 1 or 2.

4. The aluminum alloy casting equipment as described in claim 3, characterized in that, The aluminum alloy casting equipment includes: an aluminum alloy liquid supply end and a flow channel connecting the aluminum alloy liquid supply end and the aluminum alloy casting distributor.

5. A method for casting aluminum alloys, characterized in that, The aluminum alloy casting method includes: The aluminum alloy casting distributor according to claim 1 or 2 is preheated to a set temperature using induction heating, and then the set temperature is maintained by feeding aluminum alloy liquid into the aluminum alloy casting distributor through the flow channel from the aluminum alloy liquid supply end for casting.

6. The aluminum alloy casting method as described in claim 5, characterized in that, The power of the induction heating is 30-40kW; Preferably, the voltage for induction heating is 500-600V; Preferably, the current intensity of the induction heating is 60-70A.

7. The aluminum alloy casting method as described in claim 5, characterized in that, The preheating time is 10-25 minutes.

8. The aluminum alloy casting method as described in claim 5, characterized in that, The set temperature is 250-400℃.

9. An aluminum alloy casting, characterized in that, The aluminum alloy is obtained by casting using the aluminum alloy casting distributor as described in claim 1 or 2, the aluminum alloy casting equipment as described in claim 3 or 4, or the aluminum alloy casting method as described in any one of claims 5-8.

10. A terminal product, characterized in that, The end product includes the aluminum alloy casting as described in claim 9.

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