A single-head wire rod collaborative stir friction solid phase additive manufacturing device and method

Abstract

The embodiment of the present application provides a single-head wire rod coordinated stir friction solid phase additive manufacturing device and method, which belongs to the field of stir friction welding / additive manufacturing technology. The device includes a feeding rod stir friction solid phase extrusion additive manufacturing stirring head, a filling wire stir friction solid phase extrusion additive manufacturing stirring head and a transmission device; during the additive manufacturing process, the front stirring head first performs the additive manufacturing process, and under the action of the rotating friction extrusion of the stirring head, the additive raw material undergoes thermoplastic softening and deposits on the additive substrate, and moves a certain distance along the direction of travel of the stir friction additive manufacturing mechanism. The rear stirring head can perform operations such as heterogeneous material addition and surface treatment; in the case of only a single stirring head, there is no need to modify the original stir friction additive manufacturing device, and the dual stirring head feeding rod and filling wire combined stir friction solid phase additive manufacturing equipment can be quickly expanded to achieve high-performance stir friction additive manufacturing.

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 enhance understanding of the overall background of the application, and should not necessarily be regarded as an admission or any form of suggestion that the information constitutes the prior art already known to those skilled in the art.

[0003] Additive manufacturing (AM), also known as "3D printing," is a material forming and manufacturing technology that constructs physical parts through the layer-by-layer accumulation of materials based on a three-dimensional model. Compared to traditional manufacturing technologies, AM offers advantages such as low processing costs, short cycle times, high raw material utilization, and greater design freedom. It has been widely used in various fields, including aerospace, rail transportation, and marine engineering.

[0004] Friction stir solid-phase additive manufacturing (SSM) is a new SSM technology derived from friction stir welding. It boasts advantages such as 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. Currently, there are three main types of filler technologies used in SSM: powder-feeding SSM with feed holes based on friction stir deposition; wire-feeding SSM with hollow printing tools based on friction stir deposition; and rod-feeding SSM with consumable rods based on friction surface deposition. Among the above technologies, although the powder-feeding stir friction solid phase extrusion additive manufacturing technology can flexibly change the powder ratio, it has the problems of high powder cost and easy powder residue inside the equipment; although the wire-feeding stir friction 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 stir friction 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 response to 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 a transmission device to drive the expanded stirring head using the original stirring head, it is possible to achieve the rapid expansion of a dual-stirring head rod-feeding and wire-filling combined friction stir solid phase additive manufacturing equipment using a single stirring head without the need to modify the original friction stir solid phase additive manufacturing equipment. In order to achieve the purpose of improving the quality of additive parts, increasing 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 transmitting power to the two stirring heads;

[0007] Wherein, the rod-feeding friction stir solid phase extrusion additive manufacturing stirring head comprises:

[0008] a first shaft, driven by the transmission device;

[0009] A rod feeding mechanism is provided on one side of the first shaft, wherein the first shaft is provided with a first channel along the axial direction, and the rod feeding mechanism is capable of feeding the rod to the first channel;

[0010] Wherein, the wire-stir friction solid phase extrusion additive manufacturing stirring head comprises:

[0011] a second shaft provided with a hollow cavity;

[0012] a rotating shaft, one end of which is rotatably disposed in the hollow cavity of the second shaft, the rotating shaft being driven by the transmission device;

[0013] The wire filling mechanism is arranged on one side of the second shaft. A second channel is provided between the second shaft and the rotating shaft. The wire filling mechanism can convey the wire to the second channel.

[0014] 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;

[0015] The translation distance adjustment device can adjust the distance between the two stirring heads along the longitudinal direction.

[0016] Preferably, the rod-feeding friction stir solid phase extrusion additive manufacturing stirring head further comprises:

[0017] case;

[0018] 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.

[0019] 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;

[0020] A wire filling through hole is provided on 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.

[0021] Preferably, the translation distance adjustment device includes:

[0022] a base connected to one side of the housing through a first frame;

[0023] A transmission rod is rotatably arranged on one side of the base;

[0024] 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.

[0025] Preferably, the base is detachably connected to one side of the first frame;

[0026] The first frame is detachably connected to one side of the shell.

[0027] Preferably, the second shaft is detachably connected to one side of the slide via an adjusting member;

[0028] The adjusting member can adjust the relative position of the second shaft and the first shaft in the vertical direction.

[0029] Preferably, the transmission device includes:

[0030] a first transmission wheel, detachably mounted on the first shaft, the first transmission wheel being in transmission connection with the first shaft;

[0031] The second transmission wheel is detachably mounted on the rotating shaft, and the second transmission wheel is transmission-connected to the rotating shaft; and the second transmission wheel is transmission-arranged on one side of the first transmission wheel.

[0032] 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:

[0033] S100, after the additive substrate is pre-treated, it is fixed to 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;

[0034] S200, placing a rod-feeding friction stir solid phase extrusion additive manufacturing stirring head at the starting point of a substrate, and adding a substrate material of a preset thickness on the substrate as a substrate for the wire-filled friction stir solid phase extrusion additive manufacturing; if the rod-feeding friction stir solid phase extrusion additive manufacturing stirring head is on the forward side, then when the wire-filled friction stir solid phase extrusion additive manufacturing stirring head is located at the starting point of the substrate, starting a wire filling mechanism of the wire material so that the wire-filled friction stir solid phase extrusion additive manufacturing stirring head performs an additive operation; if the wire-filled friction stir solid phase extrusion additive manufacturing stirring head is on the forward side, then entering step S300;

[0035] S300, adjusting the wire-filled friction stir solid phase extrusion additive manufacturing stirring head so that it is aligned with the additive area, starting the wire-filled wire mechanism to enable the wire-filled friction stir solid phase extrusion additive manufacturing stirring head to perform the 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 rod mechanism to enable the rod-feeding friction stir solid phase extrusion additive manufacturing stirring head to perform the additive operation;

[0036] S400 , continuing 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.

[0037] Preferably, the rod material is of the same type as the substrate material;

[0038] Preferably, the rod is one of aluminum alloy, nickel alloy, magnesium alloy or copper alloy;

[0039] 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;

[0040] Preferably, the basic pretreatment for 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.

[0041] One or more technical solutions of this application have the following beneficial effects:

[0042] (1) This application uses friction stir solid-phase additive manufacturing technology to manufacture components. This method allows for 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 materials prepared by this method are less likely to have defects such as pores and cracks, the structure becomes denser, and the mechanical properties are improved.

[0043] (2) This application adopts a combined mode of rod-feeding stir friction solid phase extrusion additive manufacturing technology and wire-filling stir 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.

[0044] (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, and it is easy to quickly industrialize and apply. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] 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:

[0046] Figure 1 This is a structural diagram of a single-head wire rod collaborative friction stir solid-phase additive manufacturing device according to one embodiment of the present application;

[0047] Figure 2 This is a structural diagram of a rod-feeding friction stir solid phase extrusion additive manufacturing stirring head according to one embodiment of the present application;

[0048] Figure 3 This is a structural diagram of a stir head for wire-filled friction stir solid phase extrusion additive manufacturing according to one embodiment of the present application;

[0049] Figure 4 This is a structural diagram of a translational distance adjustment device according to an embodiment of the present application;

[0050] Figure 5 This is a structural diagram of a transmission device according to an embodiment of the present application;

[0051] Figure 6 This is a cross-sectional view of a driving pulley according to an embodiment of the present application;

[0052] Figure 7 This is a cross-sectional view of a driven pulley according to an embodiment of the present application;

[0053] Figure 8 This is a bottom view of the base of the translational distance adjustment device according to one embodiment of the present application;

[0054] Figure 9 This is a structural diagram of the first rack according to an embodiment of the present application;

[0055] Figure 10 This is a structural diagram of the second rack according to an embodiment of the present application;

[0056] Figure 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;

[0057] Figure 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;

[0058] Figure 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.

[0059] in:

[0060] 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-Casing; 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-Square flange; 23-Base; 24-Driving pulley; 25-Driven pulley; 26-Transmission belt. DETAILED DESCRIPTION

[0061] In order to make the technical solutions and advantages of the embodiments of the present application more clearly understood, the exemplary embodiments of the present application are further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, and are not an exhaustive list of all the embodiments. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other unless they conflict.

[0062] Figure 1 This is a structural diagram of a single-head wire rod collaborative friction stir solid-phase additive manufacturing device according to one embodiment of the present application; Figure 2 This is a structural diagram of a rod-feeding friction stir solid phase extrusion additive manufacturing stirring head according to one embodiment of the present application; Figure 3 This is a structural diagram of a stir head for wire-filled friction stir solid phase extrusion additive manufacturing according to one 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 This is a cross-sectional view of a driven pulley according to an embodiment of the present application; Figure 8This is a bottom view of the base of the translational distance adjustment device according to one embodiment of the present application; Figure 9 This is a structural diagram of the first rack according to an embodiment of the present application; Figure 10 This is a structural diagram of the second rack according to an embodiment of the present application; Figure 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; Figure 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; Figure 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.

[0063] like Figures 1-9 The present application provides a single-head wire rod collaborative friction stir solid phase additive manufacturing device, which 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 adjustment device 3, and the two stirring heads transmit power through a transmission device 4. The wire-filling friction stir solid phase extrusion additive manufacturing stirring head 2 is fixed on the slide 17 of the translational distance adjustment device 3 by a first frame 5, and the translational distance adjustment 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.

[0064] Depend on Figure 2 As shown, the rod-feeding friction stir solid phase extrusion additive manufacturing stirring head 1 includes a first shaft 8, a head flange 9, a housing 10, a rod-feeding mechanism (not shown), and a fixing member. The head flange 9 is fixed to the housing 10 via a fixing member. The first shaft 8 is restrained within the head flange 9 by its shaft shoulder. The rod-feeding mechanism partially inserts the rod 11 into the first channel defined by the first shaft 8.

[0065] 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.

[0066] 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.

[0067] 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 via a key to output power.

[0068] 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 .

[0069] 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 the wire-filling through hole opened on the side of the second shaft 15.

[0070] 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.

[0071] It can be understood that a flange hole is formed on the second shaft 15 to facilitate connection with the first frame 5 .

[0072] 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 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 adjustment member, the purpose of which is to adjust the relative position of the second shaft 15 and the first shaft 8 in 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.

[0073] In the above technical solution, 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 stir friction 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 stir friction 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 filling wire position, the additive surface is relatively smooth.

[0074] The above technical solution adopts a combined mode of rod-feeding stir friction solid phase extrusion additive manufacturing technology and wire-filling stir friction solid phase extrusion additive manufacturing technology, which can overcome the disadvantages of single-stirring head additive manufacturing and improve the additive efficiency of single metal. At the same time, it can add dissimilar 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.

[0075] Depend on Figure 4As shown, the translational pitch adjustment device 3 includes a slide 17, a transmission rod, a slide rail 19, a motor 20, a square flange 22, a transmission head 21, and a base 23. The transmission rod is a threaded screw 18, with both ends of the threaded screw 18 rotatably mounted on corresponding ends of the base 23. The two ends of the slide rail 19 are fixed to corresponding ends of the base 23. The slide 17 is sleeved on the outside 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 to adjust the horizontal position of the slide 17. The square flange 22 is used to guide the threaded screw 18.

[0076] It can be understood that a threaded blind hole is formed on the slide 17 to facilitate connection with the first frame 5 .

[0077] In some technical solutions, Figure 8 As shown, a threaded blind hole is opened on the back of the base 23 to facilitate connection with the second frame 6.

[0078] Depend on Figure 5 As 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, and 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 to achieve an adjustable transmission ratio of the driving pulley 24 and the driven pulley 25.

[0079] 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 stir friction solid phase extrusion additive manufacturing stirring head 1, and the second transmission wheel is a driven gear sleeved on the rotating shaft 14 in the wire stir friction solid phase extrusion additive manufacturing stirring head 2. With the cooperation of the driving gear and the driven gear, the rod stir friction solid phase extrusion additive manufacturing stirring head 1 and the wire stir friction solid phase 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. 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. The detachable connection between the driving gear and the driven gear makes the transmission ratio of the driving gear and the driven gear adjustable.

[0080] Depend on Figure 9As shown, a hole is opened on the first frame 5 so as to connect with the wire stir friction solid phase extrusion additive manufacturing stirring head 2 and the translation distance adjustment device 3.

[0081] Depend on Figure 10 As shown, a hole is opened on the second frame 6 to connect with the rod-feeding stir friction solid phase extrusion additive manufacturing stirring head 1 and the translation distance adjustment device 3.

[0082] 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 dual-stirring head rod-feeding and wire-filling combined friction stir solid phase additive manufacturing under a single head. There is no need to carry out large-scale modifications to 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, without affecting the basic pre-welding preparation work of conventional rod-feeding friction stir solid phase extrusion additive manufacturing.

[0083] When additive manufacturing is performed on substrate 7 to be additively manufactured, after the rod-feeding friction stir solid phase extrusion additive manufacturing (FSSAM) head 1 is activated, the transmission device 4 drives the wire-filling friction stir solid phase extrusion additive manufacturing (FSSAM) head 2 to perform the additive manufacturing process. Both heads utilize friction stir solid phase additive manufacturing technology, which allows for additive manufacturing without melting the material, making it possible to manufacture materials that are difficult to manufacture with melt-type additive manufacturing. Furthermore, compared to melt-type additive manufacturing, materials prepared using this method are less likely to exhibit defects such as pores and cracks, resulting in a denser structure and improved mechanical properties.

[0084] 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:

[0085] Step 1: Select corresponding rods, wires and a plate as the additive material and substrate according to the material to be prepared, then pre-treat the substrate and fix it on the backing plate 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 speed of the two stirring heads through the transmission device;

[0086] Step 2: Set the process parameters of the rod-fed FSS additive manufacturing head, place the rod-fed FSS additive manufacturing head at the starting point, and then start the equipment to add a certain thickness of base material on the substrate as the substrate for wire-fed FSS additive manufacturing;

[0087] Step 3: Adjust the wire-filled friction stir solid phase extrusion additive manufacturing stirring head so that it is aligned with the additive area, start the rod-feeding friction stir solid phase extrusion additive manufacturing stirring head to drive the wire-filled 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 enable the wire-filled friction stir solid phase extrusion additive manufacturing stirring head to perform the additive operation;

[0088] 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-filled friction stir solid phase extrusion additive manufacturing, the rod-feeding friction stir solid phase extrusion additive manufacturing stirring head is started to perform the additive operation;

[0089] Step 5: When the wire-filling friction stir solid phase extrusion additive manufacturing is completed, the wire-filling mechanism is closed first, and after 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;

[0090] Step 6: Repeat steps 2 to 5 above to add the next additive layer until the last layer is added.

[0091] During the preparation process of the above technical solution, 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.

[0092] 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 speed of the two stirring heads is adjusted by the transmission device 4 to meet the speed requirements for additive manufacturing of different materials or the speed requirements for different additive layer thicknesses of the same material.

[0093] 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.

[0094] 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.

[0095] 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.

[0096] In some embodiments of the present application, the additive raw material is pure metal or dissimilar materials such as aluminum, nickel, copper, magnesium, titanium, and steel; 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.

[0097] Among them, the rods are mainly low-melting-point alloys, and the material of the wire can be the same as or different from that of the rods. When the wire and the rod are different, the additive manufacturing of dissimilar materials can be realized. When the wire and the rod are of the same material, the surface treatment of the previous additive process can be realized.

[0098] 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, the tool head rotation speed and travel speed need to be changed accordingly to achieve dense organization and excellent performance of stir friction solid phase additive manufacturing.

[0099] The present application is further described below with reference to the embodiments.

[0100] Example 1

[0101] The additive 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, and friction stir solid phase additive manufacturing (SSM) apparatus performs additive manufacturing on a 6061-T6 aluminum alloy substrate. The wire-feeding FSS AM head 2 is positioned in front, followed by the rod-feeding FSS AM head 1. In this embodiment, the first shaft 8 of the rod-feeding FSS AM head is made of H13 tool steel, with an outer diameter of 20 mm and an inner bore of 10 mm x 10 mm. The second shaft 15 of the wire-feeding FSS AM head 2 has a diameter of 20 mm. The lower portion of the rotating shaft 14 is conical, with a root diameter of 20 mm, an end diameter of 10 mm, and a height of 60 mm. The side of the rotating shaft 14 has right-hand threads that form a second channel with the inner bore of the second shaft. The thickness of the aluminum alloy single-layer additive layer is 1.5 mm, and the thickness of the magnesium alloy single-layer additive layer 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 in order to obtain an Al-Mg laminated composite material. Figure 1 , the specific additive operation includes the following steps:

[0102] (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;

[0103] (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;

[0104] (3) Set the moving path of the stirring head of the rod-fed 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 wire-filling stir friction solid phase extrusion additive manufacturing stirring head and the rod-fed 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 on the substrate;

[0105] (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 friction stir solid phase extrusion additive manufacturing stirring head 1 to perform additive operation;

[0106] (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-filled 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 1 performs the additive operation;

[0107] (6) When the additive process is completed, the wire-feeding mechanism is closed first, and the rod-feeding mechanism is closed after the additive process is completed, and the additive process is stopped;

[0108] (7) Repeat the above steps (4) to (6), adding material layer by layer until the desired Al-Mg laminated composite material is obtained.

[0109] The cross-sectional macroscopic metallographic image of the Al-Mg laminated composite material prepared in this embodiment is shown in FIG. Figure 11 As shown, it can be found that the two metal surfaces are tightly connected and the stratification is obvious. There is no damage to the heterogeneous metal additive layers during the additive process.

[0110] Example 2

[0111] The additive 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 1The illustrated single-head, wire-rod, and friction stir solid phase additive manufacturing (SSM) apparatus performs additive manufacturing on a 6061-T6 aluminum alloy substrate. The wire-feeding FSS AM head 2 is positioned in front, followed by the rod-feeding FSS AM head 1. In this embodiment, the first shaft 8 of the rod-feeding FSS AM head is made of H13 tool steel, with an outer diameter of 20 mm and an inner bore of 10 mm x 10 mm. The second shaft 15 of the wire-feeding FSS AM head 2 has a diameter of 20 mm. The lower portion of the rotating shaft 14 is conical, with a root diameter of 20 mm, an end diameter of 10 mm, and a height of 60 mm. The side of the rotating shaft 14 has right-hand threads that form a second channel with the inner bore of the second shaft. The thickness of the aluminum alloy single-layer additive layer is 1.5 mm, and the thickness of the magnesium alloy single-layer additive layer 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 in order to obtain an Al-Mg laminated composite material. Figure 1 , the specific additive operation includes the following steps:

[0112] (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;

[0113] (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;

[0114] (3) Set the moving path of the stirring head of the rod-feeding friction stir 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-feeding friction stir solid phase extrusion additive manufacturing stirring head and the rod-feeding friction stir 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 on the substrate;

[0115] (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 friction stir solid phase extrusion additive manufacturing stirring head 1 to perform additive operation;

[0116] (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-filled 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 1 performs the additive operation;

[0117] (6) When the additive process is completed, the wire-feeding mechanism is closed first, and the rod-feeding mechanism is closed after the additive process is completed, and the additive process is stopped;

[0118] (7) Repeat the above steps (4) to (6), adding material layer by layer until the desired Al-Mg laminated composite material is obtained.

[0119] The cross-sectional macroscopic metallographic image of the Al-Mg laminated composite material prepared in this embodiment is shown in FIG. Figure 12 As shown, it can be found that the two metal surfaces are tightly connected and the stratification is obvious. There is no damage to the heterogeneous metal additive layers during the additive process.

[0120] Example 3

[0121] The additive 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 1 The illustrated single-head, wire-rod, and friction stir solid-phase additive manufacturing (SSM) apparatus performs additive manufacturing on a 6061-T6 aluminum alloy substrate. The wire-feeding FSS AM head 2 is located in front, and the rod-feeding FSS AM head 1 is located behind. In this embodiment, the first shaft of the rod-feeding FSS AM head 1 is made of H13 tool steel, with an outer diameter of 20 mm and an inner bore of 10 mm x 10 mm. The second shaft of the wire-feeding FSS AM head 2 has a diameter of 20 mm. The lower portion of the rotating shaft 14 is conical, with a root diameter of 20 mm, an end diameter of 10 mm, and a height of 60 mm. The side of the rotating shaft 14 has right-hand threads. The thickness of the aluminum alloy single-layer additive layer is 1.2 mm, and the thickness of the nickel-based alloy single-layer additive layer is 0.4 mm. The downward pressure of the stir head 1 of the stir rod friction stir solid phase extrusion additive manufacturing is set to 0.5mm, 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 layer as much as possible to obtain in-situ reinforced aluminum alloy material. Figure 1 , the specific additive operation includes the following steps:

[0122] (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;

[0123] (2) The aluminum alloy rod is loaded into the rod feeding mechanism of the stir head for stir friction solid phase extrusion additive manufacturing, and the nickel-based alloy wire is loaded into the wire filling mechanism of the stir head for stir friction solid phase extrusion additive manufacturing;

[0124] (3) Set the movement path, rotation speed of 600 rpm, and additive speed of 150 mm / min for the rod-fed FSS AM stirring head on the operation interface. The wire-filling FSS AM stirring head and the rod-fed FSS AM stirring head move synchronously at a rotation speed of 300 rpm. The transmission ratio of the driving pulley and the driven pulley is adjusted to 2:1 based on the rotation speed of the two stirring heads. Adjust the X, Y, and Z axes and transmission devices of the two stirring heads and move them to the corresponding positions on the substrate.

[0125] (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;

[0126] (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-filled 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;

[0127] (6) When the additive process is completed, the wire-feeding mechanism is closed first, and the rod-feeding mechanism is closed after the additive process is completed, and the additive process is stopped;

[0128] (7) Repeat the above steps (4) to (6), adding material layer by layer until the desired in-situ reinforced aluminum alloy material is obtained.

[0129] Example 4

[0130] The additive materials are 6061-T6 aluminum alloy rods and 6061-T6 aluminum 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, and friction stir solid-phase additive manufacturing (SSM) apparatus performs additive manufacturing on a 6061-T6 aluminum alloy substrate. The rod-feeding SSM SSM head 1 is located in front, while the wire-filling SSM SSM head 2 is located behind. In this embodiment, the first shaft 8 of the rod-feeding SSM SSM head 1 is made of H13 tool steel, with an outer diameter of 20 mm and an inner bore of 10 mm x 10 mm. The second shaft 15 of the wire-filling SSM SSM head 2 is 20 mm in diameter. The lower portion of the rotating shaft 14 is conical, with a root diameter of 20 mm, an end diameter of 10 mm, and a height of 60 mm. The side of the rotating shaft 14 has right-hand threads. The thickness of the single-layer additive layer of the aluminum alloy rod is 1.5 mm, the thickness of the single-layer additive layer of the 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:

[0131] (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;

[0132] (2) loading the aluminum alloy rod into the rod feeding mechanism of the stir head for stir friction solid phase extrusion additive manufacturing, and loading the aluminum alloy wire into the wire filling mechanism of the stir head for stir friction solid phase extrusion additive manufacturing;

[0133] (3) Set the moving path, rotation speed of 300 rpm, and additive speed of 150 mm / min of the rod-fed stir friction solid phase extrusion additive manufacturing stirring head on the operation interface; the wire-filled stir friction solid phase extrusion additive manufacturing stirring head and the rod-fed 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, and Z axes and transmission devices of the two stirring heads and move them to the corresponding positions of the substrate;

[0134] (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;

[0135] (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;

[0136] (6) When the additive process is completed, the rod feeding mechanism is closed first, and after the wire-stir friction solid phase extrusion additive manufacturing is completed, the wire feeding device is closed and the additive process is stopped;

[0137] (7) Repeat the above steps (4) to (6), adding material layer by layer until the desired surface-treated aluminum alloy material is obtained.

[0138] 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.

[0139] Comparative Example 1

[0140] 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.

[0141] The tensile strength test of the Al-Mg laminated composite material obtained after the addition of the material and the pure Mg alloy additive part obtained in the comparative example was carried out using a universal machine. The results are as follows: Figure 13 As shown in the figure, it can be found that the tensile strength of the Al-Mg laminated composite part is better than that of the pure Mg alloy additive part.

[0142] Finally, it should be noted that the above description is merely a preferred embodiment of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments or replace parts thereof with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included within the scope of protection 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 provided 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; 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); The wire filling mechanism is arranged on one side of the second shaft (15), and a second channel is provided between the second shaft (15) and the rotating shaft (14). The wire filling mechanism can convey the wire material (16) to the second channel.

2. The single-head wire rod collaborative 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 translation distance adjustment device (3); The translational distance adjustment device (3) is capable of adjusting the distance between the two stirring heads in the longitudinal direction.

3. The single-head wire rod coordinated 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) through a fixing member, the first shaft (8) is arranged at the head flange (9), and the head flange (9) can limit the axial movement of the first shaft (8).

4. The single-head wire rod coordinated 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 on one side of the second shaft (15), and the wire (16) can pass through the wire-filling through hole from the wire-filling mechanism to the second channel.

5. The single-head wire rod coordinated friction stir solid phase additive manufacturing device according to claim 3, characterized in that: The translation distance adjustment device (3) comprises: A base (23) is 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 outside of the transmission rod. The slide (17) is driven by the transmission rod and can move along the base (23). The second shaft (15) is connected to one side of the slide (17) through the second frame (6).

6. The single-head wire rod coordinated 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 housing (10).

7. The single-head wire rod coordinated 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 (17) via an adjusting member; The adjusting member is capable of adjusting the vertical relative position of the second shaft (15) and the first shaft (8).

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

9. A method for solid-phase additive manufacturing using a single-head wire rod and a friction stir solid-phase additive manufacturing device, comprising: include: S100, after the additive substrate (7) is pre-treated and fixed on one side of the workbench, the rod (11) is loaded into the feeding rod stir friction solid phase extrusion additive manufacturing stirring head (1) and extended into the first channel; the wire (16) is loaded into the filling wire stir friction solid phase extrusion additive manufacturing stirring head (2) and extended into the second channel; S200, placing a rod-feeding friction stir solid phase extrusion additive manufacturing stirring head (1) at a starting point of a substrate (7), and adding a base material of a preset thickness on the substrate (7) as a base material for the wire-feeding friction stir solid phase extrusion additive manufacturing additive material; 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 (16) is started to enable the wire-filling friction stir solid phase extrusion additive manufacturing stirring head (2) to perform the 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 as to align it 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 the 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 the additive operation; S400 , continuing 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 collaborative 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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