Additive component and friction stir deposition additive manufacturing device and method for composite material

Abstract

The invention discloses an additive component and a composite material friction stir deposition additive manufacturing device and method.The additive component is used for the composite material friction stir deposition additive manufacturing device and is provided with an axial direction and a first feeding channel, and the first feeding channel penetrates through the additive component in the axial direction; a storage space used for storing reinforced materials is formed in the material adding component and communicates with the first feeding channel, a second feeding channel is formed in the side, located in the axial direction, of the material adding component, and the second feeding channel communicates with the storage space. According to the method, first mixing and second deposition can be achieved in the friction stir deposition additive manufacturing process, the preparation efficiency can be improved, the strengthening materials can be evenly distributed in the composite material, the forming quality of the composite material can be improved, the content of the strengthening materials can be flexibly controlled, autonomous control over the components of the composite material is achieved, cost is reduced, and the method is suitable for industrial production. And the applicability of the friction stir deposition additive manufacturing composite material is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of friction stir deposition additive manufacturing, and in particular to an additive component and a composite material friction stir deposition additive manufacturing device and method. Background Art

[0002] In related technologies, the microstructure and properties of components manufactured by stir friction deposition additive manufacturing are constrained by the original rods, and the composition is uncontrollable. If composite materials are to be prepared, the corresponding composite material billets must be melted and forged in advance and extruded into corresponding rods, which greatly increases the manufacturing cycle and production costs. For gradient composite materials required for some special scenarios, frequent replacement of rods to adjust the microstructure and properties of the deposited layer also seriously affects the preparation efficiency, which runs counter to the original intention of rapid response of additive manufacturing. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one object of the present invention is to provide an additive component that can flexibly adapt to the friction stir deposition additive manufacturing of composite materials, improve the preparation efficiency, and meet different composite material preparation requirements.

[0004] The present invention also aims to provide a composite material friction stir deposition additive manufacturing device to apply the above-mentioned additive components.

[0005] The present invention also aims to propose a composite material stir friction deposition additive manufacturing method to apply the above-mentioned composite material stir friction deposition additive manufacturing device.

[0006] According to an embodiment of the present invention, an additive component is provided for use in a composite material friction stir deposition additive manufacturing device, the additive component having an axial direction and a first feed channel, the first feed channel penetrating the additive component along the axial direction, a storage space for storing reinforcing material is provided in the additive component, the storage space is connected to the first feed channel, and a second feed channel is provided on one side of the additive component located in the axial direction, the second feed channel is connected to the storage space.

[0007] According to the additive component provided by the embodiment of the present invention, in the process of stir friction deposition additive manufacturing, a rod as a matrix is ​​placed in the first feeding channel, and the second feeding channel can add a reinforcing material as a reinforcing phase into the storage space, so that the thermoplasticized part of the rod and the reinforcing material can be mixed in the first feeding channel, thereby depositing to form a composite material deposition layer, thereby obtaining a composite material. The use of the above-mentioned additive component can realize "mixing first and then deposition" in the process of stir friction deposition additive manufacturing, without the need to prefabricate composite material rods in advance, which can reduce the manufacturing difficulty of the composite material, improve the preparation efficiency, and reduce the manufacturing cost. Moreover, the reinforcing material can be dispersed in the thermoplasticized part of the rod, so that the reinforcing material can be evenly distributed in the composite material, and the composition of the obtained composite material is relatively uniform, which can improve the molding quality of the composite material. The use of the above-mentioned additive component can also flexibly control the content of the reinforcing material, realize the autonomous control of the composition of the composite material, and can meet the customized requirements of the performance of the composite material in different scenarios, which is conducive to improving the applicability of stir friction deposition additive manufacturing of composite materials.

[0008] In some embodiments of the present invention, the storage space is an annular structure arranged around the axial direction, and the end of the storage space close to the first feeding channel is open and forms an opening.

[0009] In some embodiments of the present invention, the circumferential wall surface of the storage space is configured as a conical wall surface.

[0010] In some embodiments of the present invention, the conical wall surface is provided with a spiral groove arranged around the axial direction.

[0011] In some embodiments of the present invention, the spiral groove includes a plurality of groove portions, the plurality of groove portions are sequentially arranged along the axial direction, and the center distance between any two adjacent groove portions is H, wherein 1mm≤H≤5mm.

[0012] In some embodiments of the present invention, the second feeding channel has a central axis, and the angle between the central axis and the axial direction is α, wherein 45 degrees ≤ α ≤ 80 degrees.

[0013] In some embodiments of the present invention, the first feeding channel includes a first part and a second part that are connected, the diameter of the second part is larger than the diameter of the first part, and in the axial direction, the length of the second part is smaller than the length of the first part, and the storage space is arranged in the first part and connected to the second part.

[0014] In some embodiments of the present invention, a diameter of the second portion is greater than or equal to a minimum diameter of the storage space.

[0015] A composite material friction stir deposition additive manufacturing device provided according to an embodiment of the present invention includes an additive component as described in any one of the above texts.

[0016] According to the composite material stir friction deposition additive manufacturing device of the embodiment of the present invention, by adopting the additive component, in the process of stir friction deposition additive manufacturing of composite materials, the reinforcing material as the reinforcement phase and the thermoplasticized part of the rod material can be formed into a composite material by "first mixing and then depositing", which can improve the preparation efficiency and make the reinforcing material evenly distributed in the composite material. The components of the obtained composite material are more uniform and have higher molding quality. The content of the reinforcing material can also be flexibly controlled to achieve autonomous control of the composite material components, which can meet the customized requirements of composite material performance in different scenarios and is conducive to improving the applicability of the composite material stir friction deposition additive manufacturing device.

[0017] According to an embodiment of the present invention, a composite material stir friction deposition additive manufacturing method is provided, which is manufactured using the composite material stir friction deposition additive manufacturing device as described above, and the method includes: feeding a rod into a first feeding channel of the additive component and rotating it at a preset speed; frictionally deforming the rod with a substrate to generate friction heat and thermally plasticize it; feeding a reinforcing material into the storage space through the second feeding channel, and evenly mixing the reinforcing material and the thermally plasticized part of the rod; and moving the additive component along a preset path.

[0018] According to the composite material manufacturing method of the embodiment of the present invention, in the process of stir friction deposition additive manufacturing of composite materials, the reinforcing material as the reinforcement phase and the thermoplasticized part of the rod can be formed into a composite material by "first mixing and then depositing", which can improve the preparation efficiency and make the reinforcing material evenly distributed in the composite material. The components of the obtained composite material are more uniform and have higher molding quality. The content of the reinforcing material can also be flexibly controlled to achieve autonomous control of the composite material components. It can meet the customized requirements of composite material performance in different scenarios and is conducive to improving the applicability of the composite material stir friction deposition additive manufacturing device.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0021] Figure 1 A schematic diagram of a three-dimensional structure of an additive component provided in some embodiments of the present invention;

[0022] Figure 2 A top view of an additive component provided for some embodiments of the present invention;

[0023] Figure 3 for Figure 2 Sectional view along line AA;

[0024] Figure 4 for Figure 3 A local enlarged schematic diagram of IV;

[0025] Figure 5 Schematic diagram of the additive component provided in some embodiments of the present invention when working Figure 1 ;

[0026] Figure 6 Schematic diagram of the additive component provided in some embodiments of the present invention when working Figure 2 ;

[0027] Figure 7 A flowchart of a friction stir deposition additive manufacturing method for composite materials provided in some embodiments of the present invention.

[0028] Reference numerals:

[0029] 10. Additive component; 101. First feeding channel; 1011. First part; 1012. Second part; 102. Storage space; 102a. Opening; 1021. Spiral groove; 10211. Groove part; 103. Second feeding channel; 104. Shoulder; 105. Clamping part; 20. Rod; 30. Base plate; 40. Feeding nozzle; 50. Composite material. DETAILED DESCRIPTION

[0030] Embodiments of the present invention are described in detail below, examples of which 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 only used to explain the present invention, and cannot be understood as limiting the present invention.

[0031] In the description of the present invention, it is necessary to understand that the terms "center", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the features defined as "first" or "second" may explicitly or implicitly include one or more of the features, and are used to distinguish the described features, without distinction of order or importance.

[0032] In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0033] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] Metal matrix composites have great application prospects in the aerospace field due to their excellent mechanical properties. However, in the conventional preparation process, there are often problems of uneven distribution of reinforcing particles, and the deformation capacity of composite materials is poor. In the preparation process of some complex structures, they cannot be directly plastically formed and require a lot of subtractive processing, which will increase production costs and production cycles.

[0035] Friction stir deposition additive manufacturing is a solid-phase additive manufacturing method that uses friction and plastic deformation heat generated by the rotation of a rod to achieve component preparation. Especially in the preparation of composite materials, since friction stir deposition additive manufacturing does not involve the melting and solidification of materials, the reinforcement particles will not agglomerate due to the melting of the matrix, and can be evenly distributed in the matrix to give full play to their reinforcement effect.

[0036] However, the usual practice is mainly to directly compound the raw material rods. The corresponding composite material billet is melted and forged in advance and extruded into the corresponding rods, and then the composite material rods are subjected to stir friction deposition additive manufacturing to obtain the corresponding composite material components. This process will greatly increase the manufacturing cycle and production costs. Moreover, composite materials generally have high strength and poor plastic deformation ability. For some high volume fraction composite materials such as 50wt.% SiC / Al-based composite materials, direct stir friction deposition additive manufacturing is extremely difficult. For some gradient composite materials required in special scenarios, changing the volume fraction of reinforcing particles through the original rods means that the deposition process needs to change the corresponding composite material rods at the corresponding positions, which seriously affects the stability of the production process.

[0037] In order to solve the above problems, the present invention proposes an additive component 10. The additive component 10 according to an embodiment of the present invention is described in detail below with reference to the accompanying drawings.

[0038] like Figures 1 to 3 According to an embodiment of the present invention, an additive component 10 is provided, which is used in a composite material stir friction deposition additive manufacturing device. The additive component 10 has an axial direction F1 and a first feeding channel 101. The first feeding channel 101 runs through the additive component 10 along the axial direction F1. A storage space 102 for storing reinforcing material is provided in the additive component 10. The storage space 102 is connected to the first feeding channel 101. A second feeding channel 103 is provided on one side of the additive component 10 located in the axial direction F1. The second feeding channel 103 is connected to the storage space 102.

[0039] The additive component 10 may refer to a component used for feeding materials in a composite material stir friction deposition additive manufacturing device, and can forge the deposited layer, and its function can refer to the stirring head of friction welding in the related art. Among them, the bottom of the additive component 10 can form a shoulder 104, and the shoulder 104 can forge the deposited layer.

[0040] The axial direction F1 of the additive component 10 can be referred to Figure 1 and Figure 3 The first feeding channel 101 may refer to a channel for feeding the rod 20. In the above embodiment, the shape of the additive component 10 may be, but not limited to, a cylindrical shape or a polygonal prism shape, etc., and no specific limitation is made here. For example, Figure 1 , the additive component 10 may be cylindrical.

[0041] The storage space 102 may refer to a space for storing the strengthening material. The storage space 102 may be, but not limited to, a block space or an annular space, etc. For example, the storage space 102 is a space with a relatively small volume provided on one side of the first feeding channel 101, and may be spherical, rectangular, etc. The storage space 102 may also be an annular space surrounding the circumference of the first feeding channel 101. In the above embodiment, no specific limitation is made here. The "strengthening material" mentioned above may be, but not limited to, powder, liquid, mist, etc., and no specific limitation is made here.

[0042] The second feeding channel 103 may refer to a channel for conveying the strengthening material into the storage space 102. The second feeding channel 103 may be, but is not limited to, a straight channel, an arc channel, a curved channel, or the like.

[0043] Compared with the method of pre-melting and forging the composite material blank of the corresponding mixed components and extruding the corresponding rod, and then obtaining the composite material by stir friction additive manufacturing of the rod, Figure 5 and Figure 6 When the additive component 10 of the present invention is subjected to stir friction deposition additive manufacturing, the rod 20 as the substrate can be fed into the first feeding channel 101 and rotated at a preset speed, and is thermoplasticized after generating heat due to friction in contact with the substrate 30. At the same time, the reinforcing particle powder (here only as an example of the reinforcing material, and the form of the reinforcing material is not limited to this) enters the storage space 102 from the second feeding channel 103. As the rod 20 rotates, the reinforcing particle powder can be mixed with the thermoplasticized part of the rod 20, and a composite material 50 is obtained after being deposited on the substrate 30.

[0044] Secondly, compared with the process of melting and forging the composite material blank of the corresponding mixed components in advance and extruding the corresponding rod, the rod of this composite material is relatively expensive, the processing procedures are also complicated, and the overall cost is relatively high. When the additive component 10 of the embodiment of the present invention is used to manufacture the composite material 50, a rod 20 of a single material can be used, and then reinforcing particle powder of another material can be added. The process of the rod 20 and the reinforcing particle powder is simple and the cost is relatively low, thereby reducing the overall manufacturing cost of the composite material 50.

[0045] For example, taking the preparation of 1 kg of 1.5wt% (wt is the abbreviation of mass fraction) carbon nanotube reinforced 6061 aluminum-based composite material as an example, the cost of the rod of the composite material is 8,000 yuan / kg, while the cost of the 6061 aluminum alloy rod is 25 yuan / kg, and the cost of the carbon nanoparticle powder is 600 yuan / kg. It can be seen that the use of the additive component 10 of the present invention to manufacture the composite material 50 can effectively save costs.

[0046] According to the additive component 10 provided by the embodiment of the present invention, in the process of friction stir deposition additive manufacturing, the rod 20 as the matrix is ​​placed in the first feeding channel 101, and the second feeding channel 103 can add a reinforcing material as a reinforcing phase into the storage space 102, so that the thermoplasticized part of the rod 20 and the reinforcing material can be mixed in the first feeding channel 101, thereby depositing to form a composite material deposition layer, thereby obtaining a composite material 50. The use of the above-mentioned additive component 10 can realize "mixing first, then deposition" in the process of friction stir deposition additive manufacturing, without the need to prefabricate the composite material rod 20 in advance, which can reduce the manufacturing difficulty of the composite material, improve the preparation efficiency, and reduce the manufacturing cost. In addition, the reinforcing material can be dispersed in the thermoplasticized part of the rod 20, and the reinforcing material can be evenly distributed in the composite material 50. The composition of the obtained composite material 50 is relatively uniform, which can improve the molding quality of the composite material 50. The use of the above-mentioned additive component 10 can also flexibly control the content of the reinforcing material, realize independent control of the composition of the composite material, and meet the customized requirements of the performance of the composite material 50 in different scenarios, which is conducive to improving the applicability of stir friction deposition additive manufacturing of the composite material 50.

[0047] Secondly, compared with directly depositing composite rods with high strength and poor plastic deformation ability, the additive component 10 provided in the embodiment of the present invention can add reinforcing materials when the rod 20 is fully thermoplastically softened, which can effectively reduce the upsetting force required in the stir friction deposition process, reduce equipment load, reduce energy consumption, and also help reduce costs.

[0048] In some embodiments of the present invention, Figure 3 As shown, the storage space 102 is an annular structure arranged around the axial direction F1, and the end of the storage space 102 close to the first feeding channel 101 is open and forms an opening 102a.

[0049] In the above technical solution, the reinforcing material enters the storage space 102 from the second feeding channel 103. Since the storage space 102 is an annular structure and forms an opening 102a, the reinforcing material can be evenly distributed at various positions around the first feeding channel 101, so that when the rod 20 rotates, the reinforcing material can be distributed at various positions around the rod 20. The reinforcing material can be mixed more evenly with the thermoplasticized part of the rod 20, reducing the risk of uneven composition of the composite material 50 formed by deposition, thereby improving the molding quality of the composite material 50.

[0050] The storage space 102 is configured as an annular structure, which can also increase the storage capacity of the storage space 102, so that more reinforcement materials can be stored, which can prevent the problem of insufficient reinforcement material supply during the stir friction deposition additive manufacturing process and improve the working stability and reliability of the additive component 10.

[0051] The storage space 102 adopts the above structure and can also adapt to the operating conditions where the additive component 10 and the rod 20 maintain the same direction and the same rotation speed. After the reinforcement material enters the storage space 102 from the second feeding channel 103, the reinforcement material can be evenly distributed in the storage space 102 of the annular structure, so that the reinforcement material is mixed with various circumferential positions of the rod 20.

[0052] In some embodiments of the present invention, the circumferential wall surface of the storage space 102 is configured as a conical wall surface. With the above structure, the storage space 102 is conical. When the reinforcement material is located in the storage space 102, the conical wall surface makes the upper side pressure of the reinforcement material greater than the lower side pressure, so that the reinforcement material can move downward to the discharge port position of the first feeding channel 101. Since the rod material 20 at the discharge port position is more likely to generate heat and be thermoplasticized by friction, the reinforcement material is guided to the discharge port position of the first feeding channel 101, which is more conducive to the full mixing of the reinforcement material and the thermoplasticized part of the rod material 20.

[0053] In some embodiments of the present invention, Figure 4 As shown, the conical wall surface is provided with a spiral groove 1021 arranged around the axial direction F1.

[0054] When the additive component 10 remains stationary, the spiral groove 1021 can be left-handed or right-handed; when the additive component 10 needs to rotate, the rotation direction of the spiral groove 1021 and the rotation direction of the additive component 10 remain the same.

[0055] In the above technical solution, no matter whether the additive component 10 or the rod 20 rotates, the storage space 102 with the above structure and the spiral groove 1021 can promote the downward movement of the reinforcing material, and the spiral groove 1021 can also make the reinforcing material move downward while moving along the circumferential direction of the first feeding channel 101. In this way, the large plastic deformation of the rod 20 during the rotational friction at the bottom of the first feeding channel 101 can be utilized to evenly mix the reinforcing material into the thermoplasticized part of the rod 20, so that the reinforcing material is evenly dispersed in the thermoplasticized part, which is beneficial to make the components of the composite material 50 after molding more evenly mixed, further improve the molding quality of the composite material 50, and enable the reinforcing material to move efficiently to prevent the reinforcement material from accumulating and causing blockage.

[0056] In some embodiments of the present invention, Figure 4 As shown, the spiral groove 1021 includes a plurality of groove portions 10211 , and the plurality of groove portions 10211 are sequentially arranged along the axial direction F1 , and the center distance between any two adjacent groove portions 10211 is H, wherein 1 mm≤H≤5 mm.

[0057] Multiple grooves 10211 may refer to more than two grooves 10211 .

[0058] The center distance H between any two adjacent grooves 10211 may refer to the pitch of the spiral groove 1021 , and H may be, but is not limited to, 1 mm, 1.5 mm, 2 mm, 2.5 mm, 3 mm, 3.5 mm, 4 mm, 4.5 mm, 5 mm, and the like.

[0059] In the above technical solution, by setting the center distance between any two adjacent groove portions 10211 of the spiral groove 1021 within the above range, the groove portion 10211 can have an appropriate width, thereby having an appropriate material conveying capacity, which is beneficial to strengthening the movement of the material along the spiral groove 1021.

[0060] In some embodiments of the present invention, Figure 3 As shown, the second feeding channel 103 has a central axis F2, and the angle between the central axis F2 and the axial direction F1 is α, wherein 45 degrees ≤ α ≤ 80 degrees.

[0061] α can be but is not limited to 45 degrees, 50 degrees, 55 degrees, 60 degrees, 65 degrees, 70 degrees, 75 degrees, 80 degrees, etc.

[0062] In the above technical solution, by setting the angle between the central axis F2 and the axial direction F1 of the second feeding channel 103 within the above angle range, it is beneficial for the reinforcing material to flow into the storage space 102 at a suitable speed and direction under the action of gravity and the guidance of the channel wall, which is beneficial for the efficient transportation of the reinforcing material. The appropriate angle range can also make the reinforcing material produce appropriate tumbling and mixing in the storage space 102, avoiding the occurrence of local accumulation, which is beneficial for the reinforcing material to participate in the material addition process more evenly through the first feeding channel 101, and can also prevent the powder granular reinforcing material from being accumulated in the inlet of the second feeding channel 103 or the storage space 102 due to too fast or too slow falling speed, which is beneficial to ensure the smooth operation of the entire feeding and storage system.

[0063] In some embodiments of the present invention, Figure 3 As shown, the first feeding channel 101 includes a first part 1011 and a second part 1012 connected to each other, the diameter of the second part 1012 is larger than the diameter of the first part 1011, and in the axial direction F1, the length of the second part 1012 is smaller than the length of the first part 1011, and the storage space 102 is arranged in the first part 1011 and connected to the second part 1012.

[0064] Since the rod 20 generates heat and undergoes thermoplasticization due to friction with the substrate 30 or the previous deposition layer, the diameter of the second part 1012 is larger than the diameter of the first part 1011, and the second part 1012 can have a larger volume to store more thermoplasticized parts of the rod 20 with high heat, thereby further promoting the thermoplasticization of the rod 20 in advance, which is beneficial to the deposition of the composite material. Moreover, the thermoplasticized part of the rod 20 is concentrated in the second part 1012, and the reinforcing material and the thermoplasticized part of the rod 20 can be fully mixed in the second part 1012 and deposited on the substrate 30 or the previous deposition layer from the bottom of the second part 1012. The second part 1012 with a larger diameter is beneficial to the rapid discharge of the thermoplasticized part, and can be deposited on the substrate 30 or the previous deposition layer more efficiently. The second part 1012 is shorter in length, which makes the storage space 102 closer to the thermoplasticized part of the rod 20, which is beneficial to the mixing of the reinforcing material and the thermoplasticized part.

[0065] In some embodiments of the present invention, Figure 3 As shown, in the direction from the first portion 1011 to the second portion 1012 , the diameter of the second portion 1012 gradually decreases.

[0066] That is to say, the inner wall of the second portion 1012 may be a conical wall surface or a tapered wall surface with a gradually decreasing diameter.

[0067] In the above technical solution, the inner wall surface of the second part 1012 can provide a downward thrust to the thermoplasticized part of the rod 20, which is conducive to better bringing the thermoplasticized part out of the second part 1012 and preventing the thermoplasticized part from adhering to the peripheral side wall surface of the second part 1012 and causing blockage.

[0068] In some embodiments of the present invention, Figure 3 As shown, the diameter of the second portion 1012 is greater than or equal to the minimum diameter of the storage space 102 .

[0069] It can be understood that the diameter of the second portion 1012 may be greater than the minimum diameter of the storage space 102, or the diameter of the second portion 1012 is equal to the minimum diameter of the storage space 102. Since the circumferential wall surface of the storage space 102 is a conical wall surface, the “minimum diameter of the storage space 102” may refer to the diameter of the bottom of the storage space 102.

[0070] In the above technical solution, the above structure enables the reinforcing material in the storage space 102 to move smoothly into the second part 1012 without hindrance, so that the reinforcing material and the thermoplasticized part of the rod 20 can be more fully mixed in the second part 1012.

[0071] In some embodiments of the present invention, the second feeding channel 103 may be a cylindrical channel, and the diameter of the second feeding channel 103 may be 1 mm to 10 mm.

[0072] That is to say, the diameter of the second feeding channel 103 can be but is not limited to 1 mm, 2 mm, 3 mm, 4 mm, 5 mm, 6 mm, 7 mm, 8 mm, 9 mm, 10 mm, etc.

[0073] In the above technical solution, by setting the diameter of the second feeding channel 103 within the above range, the feeding capacity of the second feeding channel 103 can be controlled to prevent the reinforcement material from accumulating in the second feeding channel 103 and causing blockage, and also enable the reinforcement material to pass through the second feeding channel 103 more smoothly.

[0074] In some embodiments of the present invention, reference Figure 1 and Figure 3 The additive component 10 is provided with a clamping portion 105, which is arranged in a circumferential ring around the additive component 10. By providing the clamping portion 105, the clamping portion 105 can be locked and fixed by a locking nut, so that the additive component 10 is conveniently installed in the composite material friction stir deposition additive manufacturing device.

[0075] A specific embodiment of the additive component 10 of the present invention is described below.

[0076] like Figures 1 to 4 As shown, the additive component 10 is used for a composite material stir friction deposition additive manufacturing device, and has an axial direction F1 and a first feed channel 101, the first feed channel 101 runs through the additive component 10 along the axial direction F1, a storage space 102 for storing reinforcement material is provided in the additive component 10, the storage space 102 is connected to the first feed channel 101, and a second feed channel 103 is provided on one side of the additive component 10 located in the axial direction F1, and the second feed channel 103 is connected to the storage space 102.

[0077] The storage space 102 is an annular structure arranged around the axial direction F1 , and the end of the storage space 102 close to the first feeding channel 101 is open and forms an opening 102 a .

[0078] The circumferential wall surface of the storage space 102 is configured as a conical wall surface, and the conical wall surface is provided with a spiral groove 1021 arranged around the axial direction F1.

[0079] The second feeding channel 103 has a central axis F2, and the angle between the central axis F2 and the axial direction F1 is 45 degrees.

[0080] The first feeding channel 101 includes a first portion 1011 and a second portion 1012 connected to each other, the diameter of the second portion 1012 is larger than the diameter of the first portion 1011, and in the axial direction F1, the length of the second portion 1012 is smaller than the length of the first portion 1011, and the storage space 102 is arranged in the first portion 1011 and connected to the second portion 1012. The diameter of the second portion 1012 is greater than or equal to the minimum diameter of the storage space 102.

[0081] A composite material friction stir deposition additive manufacturing device provided according to an embodiment of the present invention includes any additive component 10 as described above.

[0082] It should be noted that the composite material stir friction deposition additive manufacturing device may also include but is not limited to a feeding system, a control drive, a substrate fixing system, a heating system, a cooling system, a monitoring system, etc. The above structures can refer to the stir friction deposition additive manufacturing device of the related art, and will not be repeated here. The other structures and operations of the composite material stir friction deposition additive manufacturing device of the embodiment of the present invention are known to ordinary technicians in the field and will not be described in detail here.

[0083] According to the composite material stir friction deposition additive manufacturing device of the embodiment of the present invention, by adopting the additive component 10, in the process of stir friction deposition additive manufacturing of the composite material 50, the reinforcing material as the reinforcement phase and the thermoplasticized part of the rod 20 can be formed into a composite material 50 by "first mixing and then depositing", which can improve the preparation efficiency and make the reinforcing material evenly distributed in the composite material 50. The components of the obtained composite material 50 are more uniform and have higher molding quality. The content of the reinforcing material can also be flexibly controlled to achieve autonomous control of the components of the composite material 50, which can meet the customized requirements of the performance of the composite material 50 in different scenarios and is conducive to improving the applicability of the composite material stir friction deposition additive manufacturing device.

[0084] According to an embodiment of the present invention, a composite material stir friction deposition additive manufacturing method is provided, which is manufactured using the composite material stir friction deposition additive manufacturing device as described above. Figure 7 As shown, the method includes:

[0085] Step S1, feeding the rod 20 into the first feeding channel 101 of the additive component 10, and rotating it at a preset speed.

[0086] In the above steps, the preset rotation speed of the rod 20 can be set as needed, so that the rod 20 moves at a higher speed. The rod 20 may include, but is not limited to, alloys such as aluminum, magnesium, copper, titanium or steel. Exemplarily, the feed speed of the rod 20 along the axial direction F1 may be 1 mm / s-50 mm / s, and the preset rotation speed may be 50 rpm-1000 rpm.

[0087] In the process of stir friction deposition additive manufacturing of composite materials, the additive component 10 can remain stationary, or the additive component 10 and the rod 20 can both rotate with a rotation speed difference, or the additive component 10 and the rod 20 can rotate in the same direction at the same speed, and no specific limitation is made here.

[0088] Step S2, the rod 20 and the substrate 30 are deformed by friction to generate friction heat and thermally plasticize.

[0089] Step S3: Feed the reinforcement material into the storage space 102 through the second feeding channel 103, and mix the reinforcement material and the thermoplasticized part of the rod 20 evenly.

[0090] In the above steps, the reinforcing material can be sprayed into the storage space 102 along the second feeding channel 103 through the feeding nozzle 40, and then enter the first feeding channel 101. The reinforcing material can include but is not limited to granular powder, liquid or mist. When the reinforcing material is in granular powder, it can include but is not limited to SiC, TiB2, TiC2, CNT, graphene, etc. The diameter of the granular powder reinforcing material can be 100nm~100μm.

[0091] Step S4: Move the additive component 10 along a preset path.

[0092] In the above steps, the preset path may be selected according to the shape of the composite material 50 . For example, the preset path may be in a straight line, a curve, a serpentine shape, etc., and no specific limitation is made here.

[0093] It should be noted that, during the process of the additive component 10 manufacturing the composite material 50, the content of the reinforcing material entering the second feeding channel 103 can be adjusted as needed. For example, the volume fraction of the reinforcing material can be adjusted by adjusting the feeding amount of the feeding nozzle 40, or the type of the reinforcing material can be directly changed, so as to realize the free control of the type and volume fraction of the reinforcing phase of the composite material 50.

[0094] According to the composite material manufacturing method of the embodiment of the present invention, in the process of stir friction deposition additive manufacturing of the composite material 50, the reinforcing material as the reinforcement phase and the thermoplasticized part of the rod 20 can be formed into a composite material 50 by "first mixing and then depositing", which can improve the preparation efficiency and make the reinforcing material evenly distributed in the composite material 50. The components of the obtained composite material 50 are more uniform and have higher molding quality. The content of the reinforcing material can also be flexibly controlled to achieve autonomous control of the components of the composite material 50, which can meet the customized requirements of the performance of the composite material 50 in different scenarios and is conducive to improving the applicability of the composite material stir friction deposition additive manufacturing device.

[0095] In the description of this specification, the description with reference to the terms "some embodiments", "optionally", "further" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0096] Although the 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 present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An additive component for use in a composite material friction stir deposition additive manufacturing device, characterized in that: The additive component has an axial direction and a first feeding channel, the first feeding channel runs through the additive component along the axial direction, a storage space for storing reinforcing material is provided in the additive component, the storage space is connected to the first feeding channel, and a second feeding channel is provided on one side of the additive component located in the axial direction, the second feeding channel is connected to the storage space.

2. The additive component according to claim 1, characterized in that The storage space is an annular structure arranged around the axial direction, and the end of the storage space close to the first feeding channel is open and forms an opening.

3. The additive component according to claim 2, characterized in that The circumferential wall surface of the storage space is configured as a tapered wall surface.

4. The additive component according to claim 3, characterized in that The conical wall surface is provided with a spiral groove arranged around the axial direction.

5. The additive component according to claim 4, characterized in that The spiral groove includes a plurality of groove portions, and the plurality of groove portions are sequentially arranged along the axial direction. The center distance between any two adjacent groove portions is H, wherein 1 mm≤H≤5 mm.

6. The additive component according to claim 3, characterized in that The second feeding channel has a central axis, and the angle between the central axis and the axial direction is α, wherein 45 degrees ≤ α ≤ 80 degrees.

7. The additive component according to claim 3, characterized in that The first feeding channel includes a first part and a second part that are connected. The diameter of the second part is larger than the diameter of the first part, and in the axial direction, the length of the second part is smaller than the length of the first part. The storage space is arranged in the first part and connected to the second part.

8. The additive component according to claim 7, characterized in that The diameter of the second portion is greater than or equal to the minimum diameter of the storage space.

9. A composite material friction stir deposition additive manufacturing device, characterized in that: Comprising the additive component according to any one of claims 1 to 8.

10. A composite material friction stir deposition additive manufacturing method, characterized in that: The composite material friction stir deposition additive manufacturing device according to claim 9 is used for manufacturing, and the method comprises: Feeding the rod into the first feeding channel of the additive component and rotating it at a preset speed; Frictionally deforming the rod and the substrate to generate friction heat and thermally plasticize the rod; Feeding the reinforcing material into the storage space through the second feeding channel, and uniformly mixing the reinforcing material and the thermoplasticized part of the rod material; The additive component is moved along a preset path.

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