Solid-phase additive manufacturing device and method through cooperation of single-machine-head wire rod and stirring friction

Abstract

The embodiment of the invention provides a single-machine-head wire rod synergistic friction stir solid-phase additive manufacturing device and method, and belongs to the technical field of friction stir welding / additive manufacturing. The device comprises a rod feeding stirring friction solid-phase extrusion additive manufacturing stirring head, a wire filling stirring friction solid-phase extrusion additive manufacturing stirring head and a transmission device. In the additive manufacturing process, the front stirring head firstly carries out the additive manufacturing process, under the action of rotating friction extrusion of the stirring head, additive raw materials are subjected to thermoplastic softening to be deposited on an additive base plate, and the additive raw materials advance by a certain distance in the advancing direction along with a stirring friction additive manufacturing mechanism; the rear stirring head can be used for carrying out operations such as dissimilar material addition and surface treatment; under the condition that only a single stirring head exists, an original stirring friction additive manufacturing device does not need to be transformed, stirring friction solid-phase additive manufacturing equipment combining double-stirring-head rod feeding and wire filling is rapidly expanded, and high-performance stirring friction additive manufacturing is achieved.

Description

Technical Field

[0001] The present application relates to the technical field of friction stir welding / additive manufacturing, and in particular to a single-head wire rod collaborative friction stir solid-phase additive manufacturing device and method. Background Art

[0002] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the application, and should not be necessarily regarded as an admission or any form of suggestion that the information constitutes the prior art that has been known to ordinary technicians in the field.

[0003] Additive manufacturing (AM), also known as "3D printing", is a material forming manufacturing technology that constructs solid parts by accumulating materials layer by layer based on a three-dimensional model. Compared with traditional manufacturing technology, additive manufacturing has the advantages of low processing cost, short cycle, high raw material utilization rate, and large design freedom. It has been widely used in many fields such as aerospace, rail transportation, and marine engineering.

[0004] Friction stir solid phase additive manufacturing technology is a new type of solid phase additive manufacturing technology derived from friction stir welding. It has the advantages of low temperature in the additive zone, large plastic deformation, refined grain structure in the additive zone and excellent mechanical properties. It is widely used in high-performance additive manufacturing of materials such as aluminum alloys, magnesium alloys, copper alloys and titanium alloys. At present, there are three main filler technologies used in friction stir solid phase additive manufacturing. The first is the powder-feeding friction stir solid phase extrusion additive manufacturing technology based on friction stir deposition using a feeding hole, the second is the wire-filling friction stir solid phase extrusion additive manufacturing technology based on friction stir deposition using a hollow printing tool, and the third is the rod-feeding friction stir solid phase extrusion additive manufacturing technology based on friction surface deposition using consumable rods. Among the above technologies, although the powder feeding friction stir solid phase extrusion additive manufacturing technology can flexibly change the powder ratio, it has the problems of high powder cost and easy residual powder inside the equipment; although the wire feeding friction stir solid phase extrusion additive manufacturing technology has low raw material cost and can realize multi-hole wire feeding adjustment, it has the problems of low additive efficiency, complex equipment structure and high cost; although the rod feeding friction stir solid phase extrusion additive manufacturing technology can achieve high-efficiency additive at low cost, it cannot flexibly adjust the composition of the additive layer. Summary of the invention

[0005] In view of the problems existing in the above-mentioned prior art, the purpose of this application is to provide a single-head wire rod coordinated friction stir solid phase additive manufacturing device and method. By expanding a wire-filled friction stir solid phase extrusion additive manufacturing stirring head on one side of a conventional rod-feeding friction stir solid phase extrusion additive manufacturing stirring head, and using the original stirring head to drive the expanded stirring head through a transmission device, it is possible to achieve the use of a single stirring head friction stir solid phase additive manufacturing equipment without the need to modify the original friction stir solid phase additive manufacturing equipment, and quickly expand the dual stirring head rod-feeding and wire-filling combined friction stir solid phase additive manufacturing equipment. In order to achieve the purpose of improving the quality of additive parts, improving additive efficiency, and quickly manufacturing specific materials.

[0006] According to a first aspect of an embodiment of the present application, a single-head wire rod cooperative friction stir solid phase additive manufacturing device is provided, comprising: a rod feeding friction stir solid phase extrusion additive manufacturing stirring head, a wire filling friction stir solid phase extrusion additive manufacturing stirring head, and a transmission device for power transmission between the two stirring heads; Wherein, the rod-feeding friction stir solid phase extrusion additive manufacturing stirring head comprises: A first shaft, driven by the transmission device; A rod feeding mechanism is arranged at one side of the first shaft, the first shaft is provided with a first channel along the axial direction, and the rod feeding mechanism can transport the rod to the first channel; Wherein, the wire-stirring friction solid phase extrusion additive manufacturing stirring head comprises: A second shaft is provided with a hollow cavity; a rotating shaft, one end of which is rotatably disposed in the hollow cavity of the second shaft, and the rotating shaft is driven by the transmission device; The wire filling mechanism is arranged at one side of the second shaft, a second channel is arranged between the second shaft and the rotating shaft, and the wire filling mechanism can convey the wire to the second channel.

[0007] Preferably, the longitudinal direction of the substrate to be added is the additive manufacturing direction, and the wire-filling friction stir solid phase extrusion additive manufacturing stirring head is arranged on the longitudinal side of the rod-feeding friction stir solid phase extrusion additive manufacturing stirring head through a translational distance adjustment device; The translation distance adjusting device can adjust the distance between the two stirring heads along the longitudinal direction.

[0008] Preferably, the rod-feeding friction stir solid phase extrusion additive manufacturing stirring head further comprises: case; The head flange is detachably arranged on one side of the shell through a fixing piece, the first shaft is configured at the head flange, and the head flange can limit the axial movement of the first shaft.

[0009] Preferably, a spiral groove is formed at the bottom end of the rotating shaft, and the spiral groove and the inner wall of the second shaft form a second channel; A wire filling through hole is provided through one side of the second shaft, and a wire can pass through the wire filling through hole from the wire filling mechanism to the second channel.

[0010] Preferably, the translation distance adjustment device comprises: A base, connected to one side of the housing through a first frame; A transmission rod, rotatably disposed on one side of the base; The slide is sleeved on the outer side of the transmission rod. The slide is driven by the transmission rod and can move along the base. The second shaft is connected to one side of the slide through a second frame.

[0011] Preferably, the base is detachably connected to one side of the first frame; The first frame is detachably connected to one side of the shell.

[0012] Preferably, the second shaft is detachably connected to one side of the slide table through an adjusting member; The adjusting member can adjust the relative position of the second shaft and the first shaft in the vertical direction.

[0013] Preferably, the transmission device comprises: A first transmission wheel, detachably sleeved on the first shaft, the first transmission wheel being in transmission connection with the first shaft; The second transmission wheel is detachably sleeved on the rotating shaft, and the second transmission wheel is transmission-connected to the rotating shaft; and the second transmission wheel is transmission-disposed on one side of the first transmission wheel.

[0014] A second aspect of the embodiments of the present application provides a single-head wire rod collaborative friction stir solid phase additive manufacturing method, comprising: S100, after the additive substrate is pre-treated, it is fixed on one side of the workbench, and the rod is loaded into the rod-feeding friction stir solid phase extrusion additive manufacturing stirring head and extended into the first channel; the wire is loaded into the wire-filling friction stir solid phase extrusion additive manufacturing stirring head and extended into the second channel; S200, placing a rod-feeding friction stir solid phase extrusion additive manufacturing stirring head at the starting point of the substrate, adding a substrate material of a preset thickness on the substrate as a substrate for the wire-filling friction stir solid phase extrusion additive manufacturing additive material; if the rod-feeding friction stir solid phase extrusion additive manufacturing stirring head is on the forward side, then when the wire-filling friction stir solid phase extrusion additive manufacturing stirring head is located at the starting point of the substrate, starting the wire-filling mechanism of the wire material so that the wire-filling friction stir solid phase extrusion additive manufacturing stirring head performs an additive operation; if the wire-filling friction stir solid phase extrusion additive manufacturing stirring head is located on the forward side, entering step S300; S300, adjusting the wire-filling friction stir solid phase extrusion additive manufacturing stirring head to align it with the additive area, starting the wire-filling mechanism of the wire material to enable the wire-filling friction stir solid phase extrusion additive manufacturing stirring head to perform additive operation; when the rod-feeding friction stir solid phase extrusion additive manufacturing stirring head is located at the starting point of the substrate, starting the rod-feeding mechanism of the rod material to enable the rod-feeding friction stir solid phase extrusion additive manufacturing stirring head to perform additive operation; S400, continue to perform additive manufacturing in the additive area in the order of the rod-feeding friction stir solid phase extrusion additive manufacturing and the wire-filling friction stir solid phase extrusion additive manufacturing until a preset additive manufacturing thickness is reached.

[0015] Preferably, the rod material is of the same type as the substrate material; Preferably, the rod is one of aluminum alloy, nickel alloy, magnesium alloy or copper alloy; Preferably, the wire material is the same as the rod material, or the wire material is one of aluminum, nickel, titanium, magnesium, copper and steel; Preferably, the basic pretreatment of the material to be added is to polish the surface of the substrate, remove the oxide film, and then use acetone to clean the oil and impurities on the surface of the plate.

[0016] One or more technical solutions of this application have the following beneficial effects: (1) This application uses stir friction solid phase additive manufacturing technology to manufacture components. This method allows material additive manufacturing without melting, and can manufacture materials that are difficult to manufacture with melt-type additive manufacturing. At the same time, compared with melt-type additive manufacturing, the possibility of defects such as pores and cracks in the materials prepared by this method is reduced, the structure becomes denser, and the mechanical properties are improved.

[0017] (2) This application adopts a combined mode of rod-stirring friction solid phase extrusion additive manufacturing technology and wire-stirring friction solid phase extrusion additive manufacturing technology, which can overcome the disadvantages of single-stirring head additive manufacturing and improve the additive efficiency of a single metal. At the same time, it can add heterogeneous materials for in-situ strengthening and manufacturing of intermediate layers, and also provides a new idea for the manufacturing of laminated materials and composite materials.

[0018] (3) This application only requires expanding a wire-filled friction stir solid phase extrusion additive manufacturing stirring head on one side of the rod-feeding friction stir solid phase extrusion additive manufacturing stirring head, so as to give full play to the advantages of dual-stirring head rod-feeding and wire-filling combined friction stir solid phase additive manufacturing under a single head. There is no need to make large-scale modifications to the existing equipment. The wire-filled friction stir solid phase extrusion additive manufacturing stirring head can be quickly expanded through connecting components and transmission devices, and the basic pre-welding preparation work of conventional rod-feeding friction stir solid phase extrusion additive manufacturing will not be affected, so it is easy to quickly industrialize and apply. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings: Figure 1 This is a structural diagram of a single-head wire rod coordinated friction stir solid phase additive manufacturing device according to an embodiment of the present application; Figure 2 This is a structural diagram of a stirring head for stir friction solid phase extrusion additive manufacturing according to an embodiment of the present application; Figure 3 This is a structural diagram of a stirring head for wire-stirring friction solid phase extrusion additive manufacturing according to an embodiment of the present application; Figure 4 This is a structural diagram of a translational distance adjustment device according to an embodiment of the present application; Figure 5 This is a structural diagram of a transmission device according to an embodiment of the present application; Figure 6 This is a cross-sectional view of a driving pulley according to an embodiment of the present application; Figure 7 A cross-sectional view of a driven pulley according to an embodiment of the present application; Figure 8 A bottom view of a base of a translation distance adjustment device according to an embodiment of the present application; Fig. 9 This is a structural diagram of a first frame according to an embodiment of the present application; Fig.10 This is a structural diagram of a second frame according to an embodiment of the present application; Fig.11 This is a macroscopic metallographic image of a cross section of an Al-Mg laminated composite material according to an embodiment of the present application; Fig.12 This is a macroscopic metallographic image of a cross section of an Al-Mg laminated composite material according to another embodiment of the present application; Fig.13 This is a comparison chart of the tensile strength of Mg alloy additive and Al-Mg laminate additive parts according to an embodiment of the present application.

[0020] in: 1-rod-feeding friction stir solid phase extrusion additive manufacturing stirring head; 2-wire-filling friction stir solid phase extrusion additive manufacturing stirring head; 3-translational distance adjustment device; 4-transmission device; 5-first frame; 6-second frame; 7-base plate; 8-first axis; 9-head flange; 10-housing; 11-rod; 12-fixing bolt; 13-fixing nut; 14-rotating shaft; 15-second axis; 16-wire; 17-slide; 18-threaded screw; 19-slide rail; 20-motor; 21-transmission head; 22-method flange; 23-base; 24-driving pulley; 25-driven pulley; 26-transmission belt. DETAILED DESCRIPTION

[0021] In order to make the technical solutions and advantages in the embodiments of the present application more clearly understood, the exemplary embodiments of the present application are further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than an exhaustive list of all the embodiments. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0022] Figure 1 This is a structural diagram of a single-head wire rod coordinated friction stir solid phase additive manufacturing device according to an embodiment of the present application; Figure 2 This is a structural diagram of a stirring head for stir friction solid phase extrusion additive manufacturing according to an embodiment of the present application; Figure 3 This is a structural diagram of a stirring head for wire-stirring friction solid phase extrusion additive manufacturing according to an embodiment of the present application; Figure 4 This is a structural diagram of a translational distance adjustment device according to an embodiment of the present application; Figure 5 This is a structural diagram of a transmission device according to an embodiment of the present application; Figure 6 This is a cross-sectional view of a driving pulley according to an embodiment of the present application; Figure 7 A cross-sectional view of a driven pulley according to an embodiment of the present application; Figure 8 A bottom view of a base of a translation distance adjustment device according to an embodiment of the present application; Fig. 9 This is a structural diagram of a first frame according to an embodiment of the present application; Fig.10 This is a structural diagram of a second frame according to an embodiment of the present application; Fig.11 This is a macroscopic metallographic image of a cross section of an Al-Mg laminated composite material according to an embodiment of the present application; Fig.12 This is a macroscopic metallographic image of a cross section of an Al-Mg laminated composite material according to another embodiment of the present application; Fig.13 This is a comparison chart of the tensile strength of Mg alloy additive and Al-Mg laminate additive parts according to an embodiment of the present application.

[0023] like Figure 1-Figure 9 The present application provides a single-head wire rod coordinated friction stir solid phase additive manufacturing device, comprising Figure 1 As shown, it includes a rod-feeding friction stir solid phase extrusion additive manufacturing stirring head 1, a wire-filling friction stir solid phase extrusion additive manufacturing stirring head 2, and a translational distance adjusting device 3, and the two stirring heads transmit power through a transmission device 4, and the wire-filling friction stir solid phase extrusion additive manufacturing stirring head 2 is fixed on the slide 17 of the translational distance adjusting device 3 by a first frame 5, and the translational distance adjusting device 3 is fixed on the shell 10 of the rod-feeding friction stir solid phase extrusion additive manufacturing stirring head 1 by a second frame 6.

[0024] Depend on Figure 2As shown, the rod-feeding friction stir solid phase extrusion additive manufacturing stirring head 1 includes a first shaft 8, a head flange 9, a shell 10, a rod-feeding mechanism (not shown in the figure) and a fixing member. The head flange 9 is fixed to the shell 10 by a fixing member, the first shaft 8 is limited in the head flange 9 by its shaft shoulder, and the rod-feeding mechanism inserts a portion of the rod 11 into the first channel opened by the first shaft 8.

[0025] In a specific example, in order to facilitate the replacement of the head flange 9, the fixing member is a part that is easy to disassemble, such as Figure 2 The fixing bolt 12 and the fixing nut 13 are shown.

[0026] In a specific example, the transmission device includes a first transmission wheel and a second transmission wheel; wherein the first transmission wheel is detachably mounted on the first shaft 8, and the first transmission wheel can drive the first shaft 8 to rotate; the second transmission wheel is detachably mounted on the rotating shaft 14, and the second transmission wheel can drive the rotating shaft 14 to rotate; and the second transmission wheel is arranged on one side of the first transmission wheel.

[0027] In a specific example, a keyway is provided on the main shaft of the first shaft 8, and the first shaft 8 is connected to the first transmission wheel through the key to output power.

[0028] It is understandable that the housing 10 is provided with slots and holes to facilitate the connection of the transmission device 4 , the head flange 9 and the second frame 6 .

[0029] Depend on Figure 3 As shown, the wire-filled friction stir solid phase extrusion additive manufacturing stirring head 2 includes a second shaft 15, a rotating shaft 14 and a wire-filling mechanism (not shown in the figure). The lower part of the rotating shaft 14 is inserted into the second shaft 15 and is restricted in the second shaft 15 by its shaft shoulder. A spiral second channel is provided between the second shaft 15 and the rotating shaft 14. The wire-filling mechanism inserts the wire 16 into the second shaft 15 through a wire-filling through hole opened on the side of the second shaft 15.

[0030] Exemplarily, a keyway is provided on the rotating shaft 14, and the rotating shaft 14 is connected to the second transmission wheel via a key to receive power.

[0031] It can be understood that a flange hole is formed on the second shaft 15 to facilitate connection with the first frame 5 .

[0032] In a specific example, the second shaft 15 is connected to one side of the first frame 5 through an adjusting member. In some embodiments, the second shaft 15 is connected to one side of the first frame 5 through an adjusting member. Figure 1 The fastener shown is connected to one side of the first frame 5, and a gasket can be used as an adjusting member, the purpose of which is to adjust the relative position of the second shaft 15 and the first shaft 8 along the vertical direction, so as to facilitate the adjustment of the downward pressure of the second shaft 15 during the additive process under the same downward pressure drive.

[0033] In the above technical scheme, the first channel is arranged through the axis center of the first shaft 8, and the second channel is formed by the thread groove arranged on the outside of the rotating shaft 14 and the hollow cavity wall of the second shaft 15, that is, the wire outlet of the second channel is at the side wall of the hollow cavity of the second shaft 15; this makes it possible that in the process of additive manufacturing, when the rod-feeding friction stir solid phase extrusion additive manufacturing stirring head 1 is working, a material enrichment area is always formed at the center of the first shaft 8; when the wire-filling friction stir solid phase extrusion additive manufacturing stirring head 2 passes again, since its wire outlet is located at the side wall of the hollow cavity of the second shaft 15, under the combined action of the stirring friction of the rotating shaft 14 and the wire-filling position, the additive surface is relatively smooth.

[0034] The above technical solution adopts a combined mode of rod-feeding friction stir solid phase extrusion additive manufacturing technology and wire-filling friction stir solid phase extrusion additive manufacturing technology, which can overcome the drawbacks of single-stirring head additive manufacturing and improve the additive efficiency of a single metal. At the same time, it can add heterogeneous materials for in-situ strengthening and manufacturing of intermediate layers, and also provides a new idea for the manufacturing of laminated materials and composite materials.

[0035] Depend on Figure 4 As shown, the translation distance adjustment device 3 includes a slide 17, a transmission rod, a slide rail 19, a motor 20, a flange 22, a transmission head 21 and a base 23. Among them, the transmission rod is a threaded screw 18, both ends of the threaded screw 18 are rotatably arranged on the corresponding end sides of the base 23, both ends of the slide rail 19 are fixed on the corresponding end sides of the base 23, the slide 17 is sleeved on the outer side of the threaded screw 18 and can move along the slide rail 19, the motor 20 is connected to the threaded screw 18 through the transmission head 21, so as to adjust the horizontal position of the slide 17, and the flange 22 is used to guide the threaded screw 18.

[0036] It can be understood that a threaded blind hole is formed on the slide 17 to facilitate connection with the first frame 5 .

[0037] In some technical solutions, Figure 8 As shown, a threaded blind hole is formed on the back of the base 23 to facilitate connection with the second frame 6 .

[0038] Depend on Figure 5As shown, in a specific example, the first transmission wheel is a driving pulley 24 sleeved on the main shaft of the first shaft 8 of the rod stirring friction solid phase extrusion additive manufacturing stirring head 1, and the second transmission wheel is a driven pulley 25 sleeved on the rotating shaft 14 of the wire stirring friction solid phase extrusion additive manufacturing stirring head 4. With the cooperation of the driving pulley 24 and the driven pulley 25, the rod stirring friction solid phase extrusion additive manufacturing stirring head 1 and the wire stirring friction solid phase extrusion additive manufacturing stirring head 2 move synchronously, the driving pulley 24 or the first shaft 8 is connected to the output shaft of the external power source, the output shaft drives the driving pulley 24 or the first shaft 8 to rotate, and the driving pulley 24 further drives the driven pulley 25 to rotate through the transmission belt 26; through the detachable connection between the driving pulley 24 and the driven pulley 25, it is convenient to replace the driving pulley 24 and the driven pulley 25, so as to realize the adjustable transmission ratio of the driving pulley 24 and the driven pulley 25.

[0039] In another specific example, the first transmission wheel is a driving gear sleeved on the main shaft of the first shaft 8 in the rod stirring friction extrusion additive manufacturing stirring head 1, and the second transmission wheel is a driven gear sleeved on the rotating shaft 14 in the wire stirring friction extrusion additive manufacturing stirring head 2. With the cooperation of the driving gear and the driven gear, the rod stirring friction extrusion additive manufacturing stirring head 1 and the wire stirring friction extrusion additive manufacturing stirring head 2 move synchronously, and the driving gear or the first shaft 8 is connected to the output shaft of the external power source, and the output shaft drives the driving gear or the first shaft 8 to rotate, and the driving gear further drives the driven gear to rotate, and the detachable connection between the driving gear and the driven gear makes the transmission ratio of the driving gear and the driven gear adjustable.

[0040] Depend on Fig. 9 As shown, a hole is opened on the first frame 5 so as to be connected with the wire stir friction solid phase extrusion additive manufacturing stirring head 2 and the translation distance adjustment device 3.

[0041] Depend on Fig.10 As shown, a hole is opened on the second frame 6 so as to be connected with the rod-feeding friction stir solid phase extrusion additive manufacturing stirring head 1 and the translational distance adjustment device 3.

[0042] The above structural setting makes it necessary to expand the wire-filled friction stir solid phase extrusion additive manufacturing stirring head 2 on one side of the rod-feeding friction stir solid phase extrusion additive manufacturing stirring head 1, so as to give full play to the advantages of the double-stirring head rod-feeding and wire-filling combined friction stir solid phase additive manufacturing under a single head, without the need for large-scale modification of the existing equipment. The wire-filled friction stir solid phase extrusion additive manufacturing stirring head 2 can be quickly expanded through the translational distance adjustment device 3 and the transmission device 4, and the basic pre-welding preparation work of the conventional rod-feeding friction stir solid phase extrusion additive manufacturing will not be affected.

[0043] When additive manufacturing is performed on the substrate 7 to be additively manufactured, after the additive process of the rod-feeding friction stir solid phase extrusion additive manufacturing stirring head 1 is started, the transmission device 4 will drive the wire-filling friction stir solid phase extrusion additive manufacturing stirring head 2 to perform the additive process. Both stirring heads use the friction stir solid phase additive technology, which allows material additive manufacturing without melting, and can be used for materials that are difficult to additively manufacture under melting additive. At the same time, compared with melting additive, the possibility of defects such as pores and cracks in the material prepared by this method is reduced, the organization becomes denser, and the mechanical properties are improved.

[0044] Another embodiment of the present application provides a single-head rod feeding and wire filling coordinated friction stir solid phase additive manufacturing method, comprising the following steps: Step 1: Select corresponding rods, wires and a plate as additive materials and substrates according to the materials to be prepared, then pre-treat the substrate and fix the substrate on the pad of the workbench using a clamp, load the rods and wires into the corresponding stirring heads, adjust the distance between the two stirring heads through the translation distance adjustment device, and adjust the rotation speed of the two stirring heads through the transmission device; Step 2: Set the process parameters of the rod-feeding friction stir solid phase extrusion additive manufacturing stirring head, place the rod-feeding friction stir solid phase extrusion additive manufacturing stirring head at the starting point, and then start the equipment to add a certain thickness of substrate material on the substrate as a substrate for wire-filled friction stir solid phase extrusion additive manufacturing; Step 3: Adjust the wire-filling friction stir solid phase extrusion additive manufacturing stirring head to align it with the additive area, start the rod-feeding friction stir solid phase extrusion additive manufacturing stirring head to drive the wire-filling friction stir solid phase extrusion additive manufacturing stirring head to rotate, but do not start the rod-feeding mechanism of the rod first, start the wire-filling mechanism to make the wire-filling friction stir solid phase extrusion additive manufacturing stirring head perform additive operation; Step 4: according to the set program, when the rod-feeding friction stir solid phase extrusion additive manufacturing stirring head enters the additive weld bead completed by the wire-filling friction stir solid phase extrusion additive manufacturing, the rod-feeding friction stir solid phase extrusion additive manufacturing stirring head is started to perform additive operation; Step 5: When the wire-filling friction stir solid phase extrusion additive manufacturing is completed, the wire-filling mechanism is closed first, and when the rod-feeding friction stir solid phase extrusion additive manufacturing is also completed, the rod-feeding mechanism is closed and the additive manufacturing is stopped; Step 6: Repeat steps 2 to 5 above to add the next additive layer until the last layer is added.

[0045] In the preparation process of the above technical scheme, since the rod-feeding friction stir solid phase extrusion additive manufacturing stirring head and the wire-filling friction stir solid phase extrusion additive manufacturing stirring head are connected by a translational distance adjustment device, no matter which stirring head is located on the front side, when the subsequent stirring head is in the additive process, the previous additive still has a certain temperature, which can promote the metallurgical bonding between the subsequent additive and different layers of the previous additive, thereby improving the mechanical properties of the overall structure.

[0046] like Figure 1 As shown, in some embodiments of the present application, the order of the rod-feeding friction stir solid phase extrusion additive manufacturing stirring head 1 and the wire-filling friction stir solid phase extrusion additive manufacturing stirring head 2 can be adjusted to achieve different processing effects. During additive manufacturing, the rotation speeds of the two stirring heads are adjusted by the transmission device 4 to meet the additive speed of different materials or the speed of different additive layer thicknesses of the same material.

[0047] In some embodiments of the present application, the rotating shaft 14 is conical in shape, with a root diameter of 10-50 mm, an end diameter of 5-30 mm, and a height of 20-200 mm; preferably, the root diameter is 20 mm, the end diameter is 10 mm, and the height is 60 mm.

[0048] In some embodiments of the present application, the shoulder diameter of the rod-stir friction solid phase extrusion additive manufacturing stirring head 1 is 10-100 mm, preferably 20 mm; the shoulder diameter of the wire-stir friction solid phase extrusion additive manufacturing stirring head 2 is 10-100 mm; preferably 20 mm.

[0049] In some embodiments of the present application, the downward pressure of the two stirring heads is 0.05-5 mm, preferably 0.1-0.5 mm.

[0050] In some embodiments of the present application, the additive raw material is pure metal or dissimilar materials such as aluminum, nickel, copper, magnesium, titanium, steel, etc.; the dissimilar materials are aluminum-lithium alloy, aluminum-magnesium alloy, aluminum-copper alloy, aluminum-titanium alloy, aluminum-steel alloy or alloys of aluminum and composite materials.

[0051] Among them, the rod material is mainly a low-melting-point alloy, and the material of the wire material can be the same as that of the rod or different from that of the rod; when the wire material is different from that of the rod, the additive of dissimilar materials can be achieved, and when the wire material is the same as that of the rod, the surface treatment of the previous additive process can be achieved.

[0052] In some embodiments of the present application, the thickness of each additive layer remains unchanged or shows a gradient change. When the thickness of the additive layer changes, it is necessary to change the rotation speed and travel speed of the tool head accordingly to achieve dense organization and excellent performance of stir friction solid phase additive manufacturing.

[0053] The present application is further described below with reference to the embodiments.

[0054] Example 1 The additive raw materials are 6061-T6 aluminum alloy rods and AZ31B magnesium alloy wires, with a rod cross-section of 10 mm × 10 mm and a wire diameter of 1 mm. Figure 1 The illustrated single-head wire rod cooperative friction stir solid phase additive manufacturing device performs additive manufacturing on a 6061-T6 aluminum alloy substrate, with the wire stir friction solid phase extrusion additive manufacturing stirring head 2 in front and the rod stir friction solid phase extrusion additive manufacturing stirring head 1 in the back. In this embodiment, the material of the first shaft 8 of the rod stir friction solid phase extrusion additive manufacturing stirring head used is H13 tool steel, with an outer diameter of 20 mm and an inner hole size of 10 mm×10 mm. The diameter of the second shaft 15 of the wire stir friction solid phase extrusion additive manufacturing stirring head 2 used is 20 mm, the lower part of the rotating shaft 14 is conical, the root diameter is 20 mm, the end diameter is 10 mm, and the height is 60 mm. The side of the rotating shaft 14 has a right-handed thread, and the right-handed thread forms a second channel with the inner hole of the second shaft. The thickness of the single-layer additive layer of the aluminum alloy is 1.5 mm, and the thickness of the single-layer additive layer of the magnesium alloy is 0.5 mm. The downward pressure of the two stirring heads was set to 0.1 mm to minimize damage to the dissimilar metal additive layer to obtain the Al-Mg laminated composite material. Figure 1 , the specific additive operation includes the following steps: (1) Use sandpaper to polish the surface of the substrate to remove the oxide layer. After removing the oxide layer, use acetone to clean the oil and impurities on the surface of the substrate, and then use a clamp to fix the substrate on the workbench; (2) loading the aluminum alloy rod into the feeding device of the rod feeding friction stir solid phase extrusion additive manufacturing stirring head 1, so that the aluminum alloy rod extends into the first channel, and loading the magnesium alloy wire into the wire filling mechanism of the wire filling friction stir solid phase extrusion additive manufacturing stirring head 2, so that the magnesium alloy wire extends into the second channel; (3) Set the moving path of the stirring head of the rod-stir friction solid phase extrusion additive manufacturing device, the rotation speed of 800 rpm, and the additive speed of 75 mm / min on the operation interface; the stirring head of the wire-stir friction solid phase extrusion additive manufacturing device moves synchronously with the stirring head of the rod-stir friction solid phase extrusion additive manufacturing device; adjust the transmission ratio of the active pulley and the driven pulley to 3:4; adjust the X, Y, and Z axes and transmission devices of the two stirring heads and move them to the corresponding positions of the substrate; (4) starting the rod feeding friction stir solid phase extrusion additive manufacturing stirring head 1 to drive the wire filling friction stir solid phase extrusion additive manufacturing stirring head 2 to rotate, but not starting the rod feeding mechanism first, and starting the wire filling mechanism to enable the wire filling friction stir solid phase extrusion additive manufacturing stirring head 1 to perform additive operation; (5) according to the set program, when the rod-feeding friction stir solid phase extrusion additive manufacturing stirring head 1 enters the additive weld bead completed by the wire-filling friction stir solid phase extrusion additive manufacturing, the rod-feeding friction stir solid phase extrusion additive manufacturing stirring head 1 is started to perform the additive operation; (6) When the material addition is completed, the wire filling mechanism is closed first, and the rod feeding mechanism is closed after the rod stirring friction solid phase extrusion additive manufacturing is also completed, and the material addition is stopped; (7) Repeat the above steps (4) to (6), adding material layer by layer until the desired Al-Mg laminated composite material is obtained.

[0055] The cross-sectional macroscopic metallographic image of the Al-Mg laminated composite material prepared in this embodiment is shown in FIG. Fig.11 As shown, it can be found that the two metal surfaces are tightly connected and the stratification is obvious, and there is no damage to the heterogeneous metal additive layers during the additive process.

[0056] Example 2 The additive raw materials are 6061-T6 aluminum alloy rods and AZ31B magnesium alloy wires, with a rod cross-section of 10 mm × 10 mm and a wire diameter of 1 mm. Figure 1 The illustrated single-head wire rod cooperative friction stir solid phase additive manufacturing device performs additive manufacturing on a 6061-T6 aluminum alloy substrate, with the wire stir friction solid phase extrusion additive manufacturing stirring head 2 in front and the rod stir friction solid phase extrusion additive manufacturing stirring head 1 in the back. In this embodiment, the material of the first shaft 8 of the rod stir friction solid phase extrusion additive manufacturing stirring head used is H13 tool steel, with an outer diameter of 20 mm and an inner hole size of 10 mm×10 mm. The diameter of the second shaft 15 of the wire stir friction solid phase extrusion additive manufacturing stirring head 2 used is 20 mm, the lower part of the rotating shaft 14 is conical, the root diameter is 20 mm, the end diameter is 10 mm, and the height is 60 mm. The side of the rotating shaft 14 has a right-handed thread, and the right-handed thread forms a second channel with the inner hole of the second shaft. The thickness of the single-layer additive layer of the aluminum alloy is 1.5 mm, and the thickness of the single-layer additive layer of the magnesium alloy is 0.5 mm. The downward pressure of the two stirring heads was set to 0.1 mm to minimize damage to the dissimilar metal additive layer to obtain the Al-Mg laminated composite material. Figure 1 , the specific additive operation includes the following steps: (1) Use sandpaper to polish the surface of the substrate to remove the oxide layer. After removing the oxide layer, use acetone to clean the oil and impurities on the surface of the substrate, and then use a clamp to fix the substrate on the workbench; (2) loading the aluminum alloy rod into the feeding device of the rod feeding friction stir solid phase extrusion additive manufacturing stirring head 1, so that the aluminum alloy rod extends into the first channel, and loading the magnesium alloy wire into the wire filling mechanism of the wire filling friction stir solid phase extrusion additive manufacturing stirring head 2, so that the magnesium alloy wire extends into the second channel; (3) Set the moving path of the stirring head of the rod-stir friction solid phase extrusion additive manufacturing device, the rotation speed of 800 rpm, and the additive speed of 30 mm / min on the operation interface; the wire-stir friction solid phase extrusion additive manufacturing stirring head and the rod-stir friction solid phase extrusion additive manufacturing stirring head move synchronously; adjust the transmission ratio of the active pulley and the driven pulley to 3:4; adjust the X, Y, and Z axes and transmission devices of the two stirring heads and move them to the corresponding positions of the substrate; (4) starting the rod feeding friction stir solid phase extrusion additive manufacturing stirring head 1 to drive the wire filling friction stir solid phase extrusion additive manufacturing stirring head 2 to rotate, but not starting the rod feeding mechanism first, and starting the wire filling mechanism to enable the wire filling friction stir solid phase extrusion additive manufacturing stirring head 1 to perform additive operation; (5) according to the set program, when the rod-feeding friction stir solid phase extrusion additive manufacturing stirring head 1 enters the additive weld bead completed by the wire-filling friction stir solid phase extrusion additive manufacturing, the rod-feeding friction stir solid phase extrusion additive manufacturing stirring head 1 is started to perform the additive operation; (6) When the material addition is completed, the wire filling mechanism is closed first, and the rod feeding mechanism is closed after the rod stirring friction solid phase extrusion additive manufacturing is also completed, and the material addition is stopped; (7) Repeat the above steps (4) to (6), adding material layer by layer until the desired Al-Mg laminated composite material is obtained.

[0057] The cross-sectional macroscopic metallographic image of the Al-Mg laminated composite material prepared in this embodiment is shown in FIG. Fig.12 As shown, it can be found that the two metal surfaces are tightly connected and the stratification is obvious, and there is no damage to the heterogeneous metal additive layers during the additive process.

[0058] Example 3 The additive raw materials are 6061-T6 aluminum alloy rods and nickel-based alloy wires, with a rod cross-section of 10 mm × 10 mm and a wire diameter of 1 mm. Figure 1The illustrated single-head wire rod cooperative friction stir solid phase additive manufacturing device performs additive manufacturing on a 6061-T6 aluminum alloy substrate, with the wire stir friction solid phase extrusion additive manufacturing stirring head 2 in front and the rod stir friction solid phase extrusion additive manufacturing stirring head 1 in the back. In this embodiment, the material of the first shaft of the rod stir friction solid phase extrusion additive manufacturing stirring head 1 used is H13 tool steel, with an outer diameter of 20 mm and an inner hole size of 10 mm×10 mm. The diameter of the second shaft of the wire stir friction solid phase extrusion additive manufacturing stirring head 2 used is 20 mm, the lower part of the rotating shaft 14 is conical, the root diameter is 20 mm, the end diameter is 10 mm, the height is 60 mm, and the side of the rotating shaft 14 has a right-hand thread. The thickness of the single-layer additive layer of the aluminum alloy is 1.2 mm, and the thickness of the single-layer additive layer of the nickel-based alloy is 0.4 mm. The downward pressure of the stirring head 1 of the rod stir friction solid phase extrusion additive manufacturing is set to 0.5 mm, and the nickel-based alloy layer of the wire stir friction solid phase extrusion additive manufacturing additive material is stirred into the aluminum alloy additive material layer as much as possible to obtain an in-situ reinforced aluminum alloy material. Figure 1 , the specific additive operation includes the following steps: (1) Use sandpaper to polish the surface of the substrate to remove the oxide layer. After removing the oxide layer, use acetone to clean the oil and impurities on the surface of the substrate, and then use a clamp to fix the substrate on the workbench; (2) loading the aluminum alloy rod into the rod feeding mechanism of the rod feeding friction stir solid phase extrusion additive manufacturing stirring head, and loading the nickel-based alloy wire into the wire filling mechanism of the wire filling friction stir solid phase extrusion additive manufacturing stirring head; (3) Set the moving path, rotation speed of 600 rpm, and additive speed of 150 mm / min of the rod-stirring friction solid phase extrusion additive manufacturing stirring head in the operation interface. The wire-stirring friction solid phase extrusion additive manufacturing stirring head moves synchronously with the rod-stirring friction solid phase extrusion additive manufacturing stirring head, and the rotation speed is 300 rpm. The transmission ratio of the active pulley and the driven pulley is adjusted to 2:1 according to the rotation speed of the two. Adjust the X, Y, and Z axes and transmission devices of the two stirring heads and move them to the corresponding positions of the substrate; (4) Starting the rod-feeding friction stir solid phase extrusion additive manufacturing stirring head to drive the wire-filling friction stir solid phase extrusion additive manufacturing stirring head to rotate, but not starting the rod-feeding mechanism first, and starting the wire-filling mechanism to enable the wire-filling friction stir solid phase extrusion additive manufacturing stirring head to perform additive operation; (5) according to the set program, when the rod-feeding friction stir solid phase extrusion additive manufacturing stirring head enters the additive weld bead completed by the wire-filling friction stir solid phase extrusion additive manufacturing, the rod-feeding mechanism is started, so that the rod-feeding friction stir solid phase extrusion additive manufacturing stirring head performs the additive operation; (6) When the material addition is completed, the wire filling mechanism is closed first, and the rod feeding mechanism is closed after the rod stirring friction solid phase extrusion additive manufacturing is also completed, and the material addition is stopped; (7) Repeat the above steps (4) to (6), adding material layer by layer until the desired in-situ reinforced aluminum alloy material is obtained.

[0059] Example 4 The additive raw materials are 6061-T6 aluminum alloy rods and 6061-T6 aluminum alloy wires, the cross section of the rod is 10 mm × 10 mm, and the diameter of the wire is 1 mm. Figure 1 The illustrated single-head wire rod cooperative friction stir solid phase additive manufacturing device performs additive manufacturing on a 6061-T6 aluminum alloy substrate, with the feeding rod friction stir solid phase extrusion additive manufacturing stirring head 1 in front and the filling wire friction stir solid phase extrusion additive manufacturing stirring head 2 in the back. In this embodiment, the material of the first shaft 8 of the feeding rod friction stir solid phase extrusion additive manufacturing stirring head 1 used is H13 tool steel, with an outer diameter of 20 mm and an inner hole size of 10 mm×10 mm. The diameter of the second shaft 15 of the filling wire friction stir solid phase extrusion additive manufacturing stirring head 2 used is 20 mm, the lower part of the rotating shaft 14 is conical, the root diameter is 20 mm, the end diameter is 10 mm, the height is 60 mm, and the side of the rotating shaft 14 has a right-hand thread. The thickness of a single-layer additive layer of aluminum alloy rod is 1.5 mm, the thickness of a single-layer additive layer of aluminum alloy wire is 0.5 mm, the downward pressure of the wire stir friction solid phase extrusion additive manufacturing stirring head 2 is set to 0.5 mm, and the surface of the additive layer is smoothed by the wire stir friction solid phase extrusion additive manufacturing second axis to obtain a surface-treated aluminum alloy material. Figure 1 , the specific additive operation includes the following steps: (1) Use sandpaper to polish the surface of the substrate to remove the oxide layer. After removing the oxide layer, use acetone to clean the oil and impurities on the surface of the substrate, and then use a clamp to fix the substrate on the workbench; (2) loading the aluminum alloy rod into the rod feeding mechanism of the rod feeding friction stir solid phase extrusion additive manufacturing stirring head, and loading the aluminum alloy wire into the wire filling mechanism of the wire filling friction stir solid phase extrusion additive manufacturing stirring head; (3) Set the moving path, rotation speed of 300 rpm, and additive speed of 150 mm / min of the rod-stir friction solid phase extrusion additive manufacturing stirring head on the operation interface; the wire-stir friction solid phase extrusion additive manufacturing stirring head and the rod-stir friction solid phase extrusion additive manufacturing stirring head move synchronously, with a rotation speed of 300 rpm; adjust the transmission ratio of the active pulley and the driven pulley to 1:1 according to the rotation speed of the two; adjust the X, Y, Z axes and transmission devices of the two stirring heads to move them to the corresponding positions of the substrate; (4) Starting the rod-feeding friction stir solid phase extrusion additive manufacturing stirring head to drive the wire-filling friction stir solid phase extrusion additive manufacturing stirring head to rotate, but not starting the wire-filling mechanism first, and starting the rod-feeding mechanism to enable the rod-feeding friction stir solid phase extrusion additive manufacturing stirring head to perform additive operation; (5) according to the set program, when the wire-filling friction stir solid phase extrusion additive manufacturing stirring head enters the additive weld bead completed by the rod-feeding friction stir solid phase extrusion additive manufacturing, the wire-filling mechanism is started, so that the wire-filling friction stir solid phase extrusion additive manufacturing stirring head performs the additive operation; (6) When the additive process is completed, the rod feeding mechanism is closed first, and after the wire-stirring friction solid phase extrusion additive manufacturing is completed, the wire feeding device is closed and the additive process is stopped; (7) Repeat the above steps (4) to (6), adding material layer by layer until the aluminum alloy material with the desired surface treatment is obtained.

[0060] In addition, the present application is also applied to the preparation of other composite materials, such as aluminum / titanium, aluminum / steel, aluminum / composite material, magnesium / steel and other heterogeneous materials.

[0061] Comparative Example 1 The difference between this comparative example and Example 1 is that the additive raw materials in this comparative example are AZ31B magnesium alloy rods and AZ31B magnesium alloy wires, and the rest of the processes are the same as those in Example 1.

[0062] The Al-Mg laminated composite material obtained after the addition and the pure Mg alloy addition part obtained in the comparative example were tested for tensile strength using a universal machine. The results are as follows: Fig.13 As shown, it can be found that the tensile strength of the Al-Mg laminated composite parts is better than that of the pure Mg alloy additive parts.

[0063] Finally, it should be noted that the above is only a preferred embodiment of the present application and is not intended to limit the present application. Although the present application is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of them with equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A single-head wire rod coordinated friction stir solid phase additive manufacturing device, characterized in that: include: A rod-feeding friction stir solid phase extrusion additive manufacturing stirring head (1), a wire-filling friction stir solid phase extrusion additive manufacturing stirring head (2), and a transmission device (4) for transmitting power between the two stirring heads; The rod-feeding friction stir solid phase extrusion additive manufacturing stirring head (1) comprises: A first shaft (8) driven by the transmission device (4); A rod feeding mechanism is arranged on one side of the first shaft (8), the first shaft (8) being provided with a first channel along the axial direction, and the rod feeding mechanism is capable of feeding the rod (11) to the first channel; Wherein, the wire-stirring friction solid phase extrusion additive manufacturing stirring head (2) comprises: A second shaft (15) is provided with a hollow cavity; A rotating shaft (14), one end of which is rotatably disposed in the hollow cavity of the second shaft (15), and the rotating shaft (14) is driven by the transmission device (4); A wire filling mechanism is arranged on one side of the second shaft (15), a second channel is arranged between the second shaft (15) and the rotating shaft (14), and the wire filling mechanism can convey the wire material (16) to the second channel.

2. The single-head wire rod cooperative friction stir solid phase additive manufacturing device according to claim 1, characterized in that: The longitudinal direction of the substrate (7) to be added is the additive manufacturing direction, and the wire-filling friction stir solid phase extrusion additive manufacturing stirring head (2) is arranged on a longitudinal side of the rod-feeding friction stir solid phase extrusion additive manufacturing stirring head (1) through a translational distance adjustment device (3); The translational distance adjustment device (3) is capable of adjusting the distance between the two stirring heads along the longitudinal direction.

3. The single-head wire rod cooperative friction stir solid phase additive manufacturing device according to claim 2, characterized in that: The rod-feeding friction stir solid phase extrusion additive manufacturing stirring head (1) also includes: Housing (10); The head flange (9) is detachably arranged on one side of the housing (10) via a fixing member, the first shaft (8) is arranged at the head flange (9), and the head flange (9) is capable of limiting the axial movement of the first shaft (8).

4. The single-head wire rod cooperative friction stir solid phase additive manufacturing device according to claim 1, characterized in that: A spiral groove is formed at the bottom end of the rotating shaft (14), and the spiral groove and the inner wall of the second shaft (15) form a second channel; A wire filling through hole is provided through one side of the second shaft (15), and a wire material (16) can pass through the wire filling through hole from the wire filling mechanism to the second channel.

5. The single-head wire rod cooperative friction stir solid phase additive manufacturing device according to claim 3, characterized in that: The translational distance adjustment device (3) comprises: A base (23) connected to one side of the housing (10) via a first frame (5); A transmission rod rotatably disposed on one side of the base (23); The slide (17) is sleeved on the outer side of the transmission rod, and the slide (17) is driven by the transmission rod to move along the base (23), and the second shaft (15) is connected to one side of the slide (17) through a second frame (6).

6. The single-head wire rod cooperative friction stir solid phase additive manufacturing device according to claim 5, characterized in that: The base (23) is detachably connected to one side of the first frame (5); The first frame (5) is detachably connected to one side of the shell (10).

7. The single-head wire rod cooperative friction stir solid phase additive manufacturing device according to claim 5, characterized in that: The second shaft (15) is detachably connected to one side of the slide table (17) via an adjusting member; The adjusting member is capable of adjusting the relative vertical position of the second shaft (15) and the first shaft (8).

8. The single-head wire rod cooperative friction stir solid phase additive manufacturing device according to claim 1, characterized in that: The transmission device (4) comprises: A first transmission wheel, detachably sleeved on the first shaft (8), the first transmission wheel being in transmission connection with the first shaft (8); The second transmission wheel is detachably sleeved on the rotating shaft (14), the second transmission wheel is in transmission connection with the rotating shaft (14); and the second transmission wheel is transmission arranged on one side of the first transmission wheel.

9. A single-head wire rod coordinated stir friction solid phase additive manufacturing method, characterized in that: include: S100, after the additive manufacturing substrate (7) is pre-treated and fixed on one side of the workbench, the rod (11) is loaded into the rod feeding friction stir solid phase extrusion additive manufacturing stirring head (1) and extends into the first channel; the wire (16) is loaded into the wire filling friction stir solid phase extrusion additive manufacturing stirring head (2) and extends into the second channel; S200, placing a rod-feeding friction stir solid phase extrusion additive manufacturing stirring head (1) at the starting point of a substrate (7), and adding a substrate material of a preset thickness on the substrate (7) as a substrate for additive manufacturing by wire-feeding friction stir solid phase extrusion additive manufacturing; If the rod-feeding friction stir solid phase extrusion additive manufacturing stirring head (1) is on the forward side, then when the wire-filling friction stir solid phase extrusion additive manufacturing stirring head (2) is located at the starting point of the substrate, the wire-filling mechanism of the wire material (16) is started to enable the wire-filling friction stir solid phase extrusion additive manufacturing stirring head (2) to perform an additive operation; if the wire-filling friction stir solid phase extrusion additive manufacturing stirring head (2) is located on the forward side, then step S300 is entered; S300, adjusting the wire-filling friction stir solid phase extrusion additive manufacturing stirring head (2) so that it is aligned with the additive area, starting the wire-filling mechanism of the wire material (16) so that the wire-filling friction stir solid phase extrusion additive manufacturing stirring head (2) performs an additive operation; when the rod-feeding friction stir solid phase extrusion additive manufacturing stirring head (1) is located at the starting point of the substrate, starting the rod-feeding mechanism of the rod material (11) so that the rod-feeding friction stir solid phase extrusion additive manufacturing stirring head (1) performs an additive operation; S400, continue to perform additive manufacturing in the additive area in the order of the rod-feeding friction stir solid phase extrusion additive manufacturing and the wire-filling friction stir solid phase extrusion additive manufacturing until a preset additive manufacturing thickness is reached.

10. The single-head wire rod coordinated friction stir solid phase additive manufacturing method according to claim 9, characterized in that: The rod (11) and the substrate (7) are made of the same material.

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