A friction stir additive manufacturing device and a method for manufacturing meter-scale ring parts

Abstract

The present invention discloses a stir friction additive manufacturing device, which relates to the technical field of meter-scale metal ring forming, and comprises: a mounting bracket; a stage, the stage having a bearing plane for bearing a workpiece, and the stage being mounted on the mounting bracket and rotatable with the mounting bracket; an additive manufacturing device, the additive manufacturing device being suitable for consuming additive raw materials to deposit additives on the stage; a solid solution device, the solid solution device being mounted on the mounting bracket, the solid solution device being spaced apart from the additive manufacturing device, the solid solution device being suitable for heating a deposited layer; a cooling device, the cooling device being mounted on the mounting bracket, the cooling device being suitable for spraying a cooling medium in the direction of the deposited layer. The present invention deposits metal on the stage surface through the additive manufacturing device to obtain a large-sized metal ring workpiece, thereby improving the efficiency of forming and manufacturing meter-scale components.

Description

Technical Field

[0001] The present invention relates to the technical field of meter-scale metal ring forming, and in particular to a friction stir additive manufacturing device and a method for manufacturing meter-scale rings. Background Art

[0002] Among the key structural components connecting the fuel tanks of new-generation heavy-lift rockets, the integrated manufacturing of meter-scale, large-scale, high-strength aluminum alloy rings is a major challenge that urgently needs to be overcome. Conventional ingot punching and ring rolling processes have extremely low material utilization rates and are difficult to process. The preparation process also introduces severe deformation, requiring complex tooling and stress relief annealing, shaping, and rounding, making dimensional accuracy control difficult. Furthermore, multi-directional forging of meter-scale components is difficult, and the components are prone to problems such as uneven thickness-direction microstructure and severe anisotropy, making it difficult to ensure the overall mechanical properties of the rings. Summary of the Invention

[0003] The purpose of the present invention is to provide a stir friction additive manufacturing device to address the shortcomings of the existing technology, thereby improving the efficiency of manufacturing meter-level components.

[0004] To achieve the above-mentioned objectives, the first aspect of the present invention provides a stir friction additive manufacturing device, comprising: a mounting bracket; a carrier, the carrier having a bearing plane for bearing a workpiece, and the carrier is mounted on the mounting bracket and can rotate with the mounting bracket; an additive manufacturing device, the additive manufacturing device is suitable for consuming additive raw materials to additively deposit on the carrier; a solid solution device, the solid solution device is mounted on the mounting bracket, the solid solution device is arranged separately from the additive manufacturing device, and the solid solution device is suitable for heating the deposited layer; a cooling device, the cooling device is mounted on the mounting bracket, and the cooling device is suitable for spraying a cooling medium in the direction of the deposited layer.

[0005] The advantage of the friction stir additive manufacturing equipment over the existing technology is that, since the stationary shoulder and the worktable in the additive manufacturing device have a given gap, the given gap can determine the thickness of the deposited layer. The additive raw material (one of metal rods, wires, particles / powders) in the additive manufacturing device is subjected to axial pressure and continuously rubs and squeezes the load-bearing plane, thereby generating intense frictional heat and shear plastic deformation, causing the material to soften and produce plastic flow, filling the gap between the stationary shoulder and the load-bearing plane; as the worktable rotates, the softened material is metallurgically connected to the load-bearing plane and deposited on the load-bearing plane to form an additive layer; the above operation is repeated along a given processing path to finally obtain a metal ring-shaped workpiece.

[0006] In some embodiments, there are a plurality of additive manufacturing devices, and the plurality of additive manufacturing devices are arranged spaced apart in a circumferential direction.

[0007] In some embodiments, in the circumferential direction, the solid solution device is installed between two of the additive manufacturing devices, and the additive manufacturing device is provided between the solid solution device and the cooling device.

[0008] In some embodiments, the cooling device is installed between the two additive manufacturing devices in the circumferential direction.

[0009] In some embodiments, the solid solution device and the cooling device are both provided with a heat shield that cooperates therewith, the heat shield is mounted on the mounting bracket, the heat shield is arranged outside the cooling device or the solid solution device, and the heat shield covers at least a portion of the ring.

[0010] In some embodiments, the mounting bracket includes a base and a rotating frame, wherein the rotating frame is rotatably mounted on the base; the stir friction additive manufacturing equipment also includes a driving member, and the output end of the driving member is connected to the rotating frame to drive the rotating frame and the worktable to rotate synchronously.

[0011] In some embodiments, there are multiple solid solution devices, and the number of the solid solution devices is greater than the number of the cooling devices.

[0012] The second aspect of the present invention provides a method for manufacturing meter-scale ring parts, which is implemented by stir friction additive manufacturing equipment and is characterized in that it includes the following steps: S1: the additive manufacturing device drives the deposition material to contact the bearing plane of the stage to perform initial deposition; S2: the stage and the mounting bracket are rotated relative to each other to perform annular additive manufacturing, the solid solution device heats the workpiece in the area covered by it, and the cooling device cools the workpiece in the area covered by it.

[0013] In some embodiments, the total duration of heating the same position of the workpiece is T1, and the total duration of cooling the same position of the workpiece is T2, satisfying: T1>T2.

[0014] In some embodiments, the additive raw material in the additive manufacturing device is one of rods, wires, particles, and powders.

[0015] The advantages of the meter-scale ring manufacturing method are the same as those of the above-mentioned stir friction additive manufacturing equipment over the existing technology, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments with reference to the following drawings, in which:

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the friction stir additive manufacturing equipment according to an embodiment of the present invention.

[0018] Figure 2 2 is a schematic diagram of the top view of the friction stir additive manufacturing equipment according to an embodiment of the present invention.

[0019] Figure 3 It is a structural schematic diagram of an additive manufacturing device according to an embodiment of the present invention.

[0020] Figure 4 It is a structural schematic diagram of an additive manufacturing device according to another embodiment of the present invention.

[0021] Figure 5 1 is a temperature-time history diagram of a workpiece processing process according to an embodiment of the present invention.

[0022] Reference numerals:

[0023] Friction stir additive manufacturing equipment 100;

[0024] Mounting bracket 10; base 11; rotating frame 12; stage 20; additive manufacturing device 30; metal rod 31; stationary shoulder 32; long screw 33; induction coil 34; high melting point raw material 35; solid solution device 40; cooling device 50; nozzle 51; driving member 60. DETAILED DESCRIPTION

[0025] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0026] In the description of the present invention, it should be understood that the terms "upper", "lower", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, they cannot be understood as limiting the present invention. In addition, features defined as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0027] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0028] Among related technologies, Friction Stir Additive Manufacturing (FSAM) and Friction Extrusion Additive Manufacturing (FEAM) are innovative metal solid-phase additive manufacturing technologies developed in recent years based on the principles of friction welding. These technologies utilize the principles of layered accumulation and friction extrusion plastic deformation to achieve metal deposition, overcoming the inevitable metallurgical defects of fusion welding, such as porosity, lack of fusion, and thermal cracking, which cannot be completely eliminated through additive manufacturing microstructure control, post-weld heat treatment, hot isostatic pressing, and mechanical rolling.

[0029] Reference below Figure 1-Figure 5 A friction stir additive manufacturing apparatus 100 according to an embodiment of the first aspect of the present invention is described.

[0030] like Figure 1 As shown, the friction stir additive manufacturing apparatus 100 includes: a mounting bracket 10, a stage 20, an additive manufacturing device 30, a solid solution device 40, and a cooling device 50. The stage 20 has a support surface for supporting a workpiece and is mounted on the mounting bracket 10 and can rotate with the mounting bracket 10. The additive manufacturing device 30 is adapted to consume additive feedstock to deposit additive material onto the stage 20.

[0031] For example, the additive manufacturing device 30 is provided with a metal bar 31 and a stationary shoulder 32 . The metal bar 31 is a raw material for forming a workpiece, and the stationary shoulder 32 is used to support the metal bar 31 for discharging.

[0032] Since there is a given gap between the stationary shoulder 32 and the carrier 20, the given gap can determine the thickness of the deposited layer. The additive raw material (one of the metal rods 31, wires, particles / powders) is subjected to axial pressure and continuously rubs and squeezes the load-bearing plane, thereby generating strong frictional heat and shear plastic deformation, causing the material to soften and produce plastic flow, filling the gap between the stationary shoulder 32 and the load-bearing plane; as the carrier 20 rotates, the softened material is metallurgically connected to the load-bearing plane and deposited on the load-bearing plane to form an additive layer; the above operations are repeated along a given processing path to finally obtain a metal annular workpiece.

[0033] like Figure 1-Figure 2 As shown, in some embodiments, the mounting bracket 10 may include a base 11 and a rotating frame 12 , wherein the rotating frame 12 may be rotatably mounted on the base 11 .

[0034] It should be noted that the additive manufacturing device 30 of the present invention can remain stable while the rotating frame 12 actively rotates relative to the base 11 and the additive manufacturing device 30. Alternatively, the mounting bracket 10 and the stage 20 can remain stable while the additive manufacturing device 30 actively rotates relative to the stage 20. Alternatively, the mounting bracket 10 and the stage 20 can be actively rotated while the additive manufacturing device 30 also actively rotates, with the two rotating in opposite directions.

[0035] This method enables the production of larger additive components, with dimensions reaching into the meter range. Because additive metals do not melt and solidify, metallurgical defects such as internal porosity, lack of fusion, and thermal cracking are effectively avoided. Furthermore, it enables the production of larger additive components, with dimensions reaching into the meter range. It enables a variety of processing processes for aluminum alloy additive, coating, joining, repair, and remanufacturing, and can produce aluminum-based composites and functional ladder materials, with broad process applicability.

[0036] like Figure 1-Figure 2 As shown, the solid solution device 40 is installed on the mounting bracket 10, and the solid solution device 40 is arranged separately from the additive manufacturing device 30. The solid solution device 40 is suitable for heating the deposition layer; the cooling device 50 is installed on the mounting bracket 10, and the cooling device 50 is suitable for spraying cooling medium toward the deposition layer, wherein a nozzle may be provided in the cooling device 50, and the nozzle is used to spray cooling medium toward the deposition layer.

[0037] Using the solutionizing device 40 to heat the deposited layer can effectively improve the microstructure of the material during the friction extrusion additive manufacturing process. By locally heating the deposited layer, grain refinement can be promoted, thereby improving the mechanical properties of the material. Since the additive manufacturing process of the present invention does not involve the melting and solidification of the material, defects such as porosity, lack of fusion and thermal cracks that are common in traditional fusion welding additive manufacturing can be avoided. However, the additive process may still generate residual stress, and using the solutionizing device 40 for heating treatment helps to adjust and homogenize the temperature distribution, thereby reducing residual stress.

[0038] Using the cooling device 50 to cool the deposited layer can increase the cooling rate of the deposited layer, thereby refining the grains. The fine grain structure helps to improve the mechanical properties of the material, such as strength and toughness. Rapid cooling can also reduce the component segregation that may occur during the deposition process, making the material composition more uniform. In addition, residual stress is easily generated due to the presence of high temperature and temperature gradients during the additive manufacturing process. Water cooling can effectively reduce the internal stress caused by temperature differences by controlling the cooling rate and temperature distribution, thereby reducing the overall residual stress level and significantly improving the mechanical properties of the material.

[0039] It should be noted that the height of the final formed workpiece is lower than the heights of the solid solution device 40 and the cooling device 50 .

[0040] like Figure 3-Figure 4 In some optional embodiments, the additive manufacturing device 30 may further include a stationary shoulder 32 , a long screw 33 , and an induction coil 34 .

[0041] Among them, the induction coil 34 is installed in the groove on the outer wall of the stationary shoulder 32. The induction coil 34 is started to heat the stationary shoulder 32, and the heating temperature is slightly lower than the melting point of the target material. The high-melting-point raw material 35 is fed into the screw from the feed cavity of the stationary shoulder 32. The high-melting-point metal includes but is not limited to steel, titanium, copper and its alloys, and the additive raw material can be in the form of wire, granules or powder. The high-melting-point raw material 35 is conveyed downward along the screw thread groove. The screw height is 100-300mm. The groove can be rectangular, elliptical, irregular, etc., and the spiral angle is 10° to 60°. The semi-solid fluid is extruded along the screw groove, and the stirring needle on the flat surface of the screw end further rotates and stirs the extruded material to promote material flow, strengthen interface bonding, and achieve high-quality deposition.

[0042] In some optional embodiments, there are a plurality of additive manufacturing devices 30 , and the plurality of additive manufacturing devices 30 are arranged at intervals along the circumference, and may be arranged at intervals along the circumference of the rotating frame 12 .

[0043] By installing the additive manufacturing device 30, more material can be deposited in the same amount of time, thereby improving overall production efficiency. Because the metal does not melt during the deposition process, the original material's microstructure is preserved, avoiding problems such as microstructural coarsening that can occur during fusion welding. Furthermore, by precisely controlling the feed speed and position of the multiple metal bars 31, more uniform and refined material deposition can be achieved, resulting in better mechanical properties.

[0044] It is important to note that the provision of multiple metal rods 31 allows for the simultaneous or selective deposition of different metal materials, making it possible to achieve compositional or functional gradients within the same component. This material diversity and customizability opens up more possibilities for designing composite materials or functionally graded materials with specific performance requirements.

[0045] In some embodiments, in the circumferential direction, the solid solution device 40 is installed between two additive manufacturing devices 30 , and the additive manufacturing device 30 is provided between the solid solution device 40 and the cooling device 50 .

[0046] During the additive manufacturing process, residual stress is easily generated due to the presence of high temperatures and temperature gradients. By properly controlling the temperature and position of the heating element, the internal stress caused by temperature differences can be reduced, thereby reducing the overall residual stress level.

[0047] By using two metal bars 31, material deposition can be performed simultaneously or alternately, which allows more material to be processed at the same time, thereby improving overall production efficiency. This is particularly important in fields that require rapid manufacturing of large structural parts, such as aerospace and automotive manufacturing.

[0048] In some embodiments, the cooling device 50 is installed between two additive manufacturing devices 30 in the circumferential direction.

[0049] The cooling device 50 is placed between the two additive manufacturing devices 30 to cool the deposited layer, thereby making the deposited layer structure more stable after cooling. In addition, cooling the deposited layer in this way also pre-treats the next deposition, facilitating better deposition effects in the subsequent additive manufacturing devices 30.

[0050] In some optional embodiments, the solid solution device 40 and the cooling device 50 are both provided with a heat insulation cover that cooperates with them. The heat insulation cover is installed on the mounting bracket 10, and the heat insulation cover is arranged outside the cooling device 50 or the solid solution device 40, and the heat insulation cover covers at least a portion of the ring.

[0051] By providing a heat shield on the solution dissolving device 40, the heat can be effectively confined to the heating area, thereby improving the efficiency of the heating process. This not only speeds up the heating speed, but also reduces energy consumption, because the heat is mainly used to heat the target area rather than being wasted into the environment. The heat shield helps to maintain the temperature of the solution dissolving device 40 stable, which is crucial to ensuring the consistency and quality of material processing during the stir friction additive manufacturing process. Stable temperature can promote more uniform material deposition, thereby improving the microstructure and mechanical properties of the final product. By limiting heat loss, the heat shield reduces the impact on the surrounding environment. This not only helps to protect operators from high temperature injuries, but also reduces the heat radiation of the equipment to the surrounding environment, making the entire working environment more comfortable and safe.

[0052] By providing a heat shield on the cooling device 50, the cooling water flow ejected from the nozzle can be effectively controlled within the cooling area, thereby improving the efficiency of the cooling process. This not only speeds up the cooling rate, but also reduces energy consumption, because water cooling is mainly used to cool the target area rather than being wasted into the environment. The heat shield helps to maintain a stable temperature of the cooling device 50, which is crucial for ensuring the consistency and quality of material processing during the stir friction additive manufacturing process. Stable temperature can promote more uniform material deposition, thereby improving the microstructure and mechanical properties of the final product. By limiting heat loss, the heat shield reduces the impact on the surrounding environment.

[0053] In some embodiments, the friction stir additive manufacturing apparatus 100 further includes a driving member 60 , the output end of which is connected to the rotating frame 12 to drive the rotating frame 12 and the stage 20 to rotate synchronously.

[0054] It should be noted that the driving member 60 may be a motor. By providing the driving member 60 and connecting the output end of the driving member 60 to the rotating frame 12 , the rotating frame 12 can be actively rotated relative to the base 11 .

[0055] Using automated motor control can reduce errors introduced by manual operations and ensure that operating steps are executed accurately.

[0056] In some embodiments, there are multiple solid solution devices 40 , and the number of solid solution devices 40 is greater than the number of cooling devices 50 .

[0057] By providing multiple solution dissolving devices 40, uniform temperature distribution can be ensured throughout the annular workpiece during heating, which is crucial for ensuring material homogeneity and reducing internal stress. Furthermore, proper heating can increase the plasticity of the material, making it easier to flow during the friction stir process, thereby improving the precision and surface finish of the manufactured workpiece.

[0058] During the additive manufacturing process, uneven thermal expansion and cooling contraction can generate stress within the material. By controlling the heating and cooling processes, these internal stresses can be reduced, preventing deformation or cracking in the finished product. Compared to traditional, global heating methods, localized and precise heating utilizes energy more efficiently, reducing unnecessary energy waste and aligning with the concept of green manufacturing.

[0059] Optionally, the number of the solid solution devices 40 can be the number of the additive manufacturing devices 30 minus one. For example, when there are three solid solution devices 40, there are four additive manufacturing devices 30.

[0060] Reference below Figure 1-Figure 5 The method for manufacturing a meter-scale ring according to the second embodiment of the present invention is described. The method for manufacturing a meter-scale ring is implemented using the friction stir additive manufacturing apparatus 100 of any of the above embodiments, including the following steps:

[0061] S1: The additive manufacturing device 30 drives the deposition material to contact the carrying surface of the stage 20 to perform initial deposition;

[0062] S2: The stage 20 and the mounting bracket 10 are rotated relative to each other to perform annular additive manufacturing. The solid solution device 40 heats the workpiece in the area covered by it, and the cooling device 50 cools the workpiece in the area covered by it.

[0063] In step S1 , there is a given gap between the additive manufacturing device 30 and the stage 20 , and the additive manufacturing device 30 drives the deposition material to contact the supporting surface of the stage 20 for initial deposition.

[0064] In step S1, the deposition material used in the additive manufacturing device 30 can be a consumable rod, which can be placed in the stationary shoulder 32. The additive manufacturing device 30 can be pressure-controlled, and the pressure can be 2kN-50kN. A rigid support frame can be provided on the mounting bracket 10 located directly below the additive manufacturing device 30. The rod diameter can be 5mm-40mm, the outer diameter of the stationary shoulder 32 can be 6mm-60mm, the rod rotation speed can be 50rpm-3000rpm, and the feed speed can be 0.1m / min-10m / min.

[0065] In step S2, when the stage 20 and the mounting bracket 10 rotate relative to each other, the deposited material in the additive manufacturing device 30 is subjected to intense frictional heat and shear plastic deformation, causing the material to soften and produce plastic flow, filling the gap between the additive manufacturing device 30 and the supporting plane; as the stage 20 rotates, the softened material is metallurgically connected to the supporting plane and is deposited on the surface of the substrate to form an additive layer.

[0066] In step S2, when mounting bracket 10 rotates stage 20, the rotational speed of stage 20 can be between 10 mm / min and 1000 mm / min. The temperature of solutionizing unit 40 is between 400°C and 600°C. The holding time of the deposited layer is determined by the rotational speed of stage 20 and the extension length of solutionizing unit 40. Cooling unit 50 is equipped with a nozzle adapted to spray cooling medium toward the deposited layer.

[0067] The meter-scale ring manufacturing method provided in the second aspect of the present invention is implemented by using the stir friction additive manufacturing equipment 100 proposed in the first aspect of the present invention, and therefore has all the beneficial effects of the stir friction additive manufacturing equipment 100. It can prepare larger-sized additive components and the processing size reaches the meter-scale range. In addition, since the additive metal does not have the phenomenon of melting and solidification, it effectively avoids metallurgical defects such as internal porosity, unfused and thermal cracks in the additive.

[0068] In some embodiments, the total duration of heating the same position of the workpiece is T1, and the total duration of cooling the same position of the workpiece is T2, satisfying: T1>T2.

[0069] By limiting the heating and cooling times, and making the total heating time at the same location on the workpiece longer than the total cooling time, the deposited material can be kept at a higher temperature for a longer period of time, thereby increasing its plastic deformation capacity. This is particularly important for friction stir additive manufacturing, as it relies on the plastic flow of materials to fill and form complex geometries. Higher plastic deformation capacity means that small or complex gaps can be filled more effectively, thereby improving the precision and surface quality of the manufactured parts. And the extension of the heating time helps to optimize the deposition efficiency of the material. In the friction stir additive manufacturing process, the material is combined together through stirring and frictional heat. When the heating time is longer than the cooling time, the material can maintain a better plastic state for a longer period of time, which helps to improve the deposition efficiency of the material, making the additive manufacturing process more efficient and stable.

[0070] In addition, the extension of heating time is conducive to enhancing the diffusion effect between the atoms of the material. In friction stir additive manufacturing, the diffusion of atoms between different layers is the key to achieving good metallurgical bonding. By extending the heating time, the atoms can be given more time to diffuse, thereby promoting a stronger metallurgical bond and improving the overall performance and durability of the finished product. The appropriate heating time helps to reduce residual stress inside the workpiece. During the additive manufacturing process, stress may be generated inside the material due to the unevenness of thermal expansion and contraction. By controlling the heating and cooling processes, especially ensuring that the heating time is longer than the cooling time, these internal stresses can be effectively reduced and deformation or cracks in the finished product can be avoided.

[0071] In some embodiments, the cooling rate of the cooling device 50 is Q, which satisfies: 20°C / s≤Q≤200°C / s.

[0072] By controlling the cooling rate within this range, excessive grain growth can be avoided, resulting in a finer grain structure. Fine grains contribute to improved mechanical properties, such as strength and toughness. For heat-treatable metals, an appropriate cooling rate can promote more favorable phase transformations, resulting in better mechanical properties and corrosion resistance.

[0073] Controlling the cooling rate reduces internal stresses caused by temperature gradients, which is crucial for avoiding deformation or cracking in the finished product. Uniform cooling helps maintain the dimensional accuracy of the part, reduces the need for subsequent processing, and improves production efficiency.

[0074] An appropriate cooling rate can form more hardened phases in the material, thereby increasing its hardness and strength. It can also reduce the occurrence of thermal cracks caused by rapid cooling, which is particularly important when processing materials with high alloying element content. Uniform cooling helps gases escape from the molten metal, preventing the formation of pores and improving the density of the material.

[0075] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative uses of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0076] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. A friction stir additive manufacturing device, characterized in that: include: Mounting bracket; A stage, the stage having a bearing surface for bearing a workpiece, and the stage is mounted on the mounting bracket and can rotate with the mounting bracket; an additive manufacturing device adapted to consume additive feedstock to additively deposit material onto the stage; a solid solution device, the solid solution device being mounted on the mounting bracket, the solid solution device being spaced apart from the additive manufacturing device, and the solid solution device being adapted to heat the deposited layer; A cooling device is installed on the mounting bracket, and the cooling device is suitable for spraying a cooling medium toward the deposition layer.

2. The friction stir additive manufacturing equipment according to claim 1, characterized in that There are a plurality of additive manufacturing devices, and the plurality of additive manufacturing devices are arranged at intervals along the circumferential direction.

3. The friction stir additive manufacturing equipment according to claim 2, characterized in that In the circumferential direction, the solid solution device is installed between the two additive manufacturing devices, and the additive manufacturing device is provided between the solid solution device and the cooling device.

4. The friction stir additive manufacturing equipment according to claim 3, characterized in that In the circumferential direction, the cooling device is installed between the two additive manufacturing devices.

5. The friction stir additive manufacturing equipment according to claim 1, characterized in that The solid solution device and the cooling device are both provided with a heat shield matched therewith, the heat shield is mounted on the mounting bracket, the heat shield is arranged outside the cooling device or the solid solution device, and the heat shield covers at least a part of the ring.

6. The friction stir additive manufacturing equipment according to claim 1, characterized in that The mounting bracket includes a base and a rotating frame, wherein the rotating frame is rotatably mounted on the base; the stir friction additive manufacturing equipment also includes a driving member, the output end of which is connected to the rotating frame to drive the rotating frame and the worktable to rotate synchronously.

7. The friction stir additive manufacturing apparatus according to any one of claims 1 to 6, characterized in that: There are multiple solid solution devices, and the number of the solid solution devices is greater than the number of the cooling devices.

8. A method for manufacturing meter-scale ring parts, wherein the method is implemented using the friction stir additive manufacturing equipment according to any one of claims 1 to 7, characterized in that: Including steps: S1: The additive manufacturing device causes the deposition material to contact the carrying surface of the stage to perform initial deposition; S2: The stage and the mounting bracket are rotated relative to each other to perform annular additive manufacturing, the solid solution device heats the workpiece in the area covered by it, and the cooling device cools the workpiece in the area covered by it.

9. The method for manufacturing meter-grade rings according to claim 8, characterized in that: The total time length for heating the same position of the workpiece is T1, and the total time length for cooling the same position of the workpiece is T2, satisfying: T1>T2.

10. The method for manufacturing meter-grade rings according to claim 8, characterized in that: The additive raw material in the additive manufacturing device is one of rods, wires, particles and powders.

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