Ultrasonic and thermal field coupling assisted titanium alloy wire electric arc additive manufacturing device

Abstract

The utility model provides an ultrasonic and thermal field coupling assisted titanium alloy wire electric arc additive manufacturing device which comprises a titanium alloy substrate (4) on a constant-temperature heating table (1), an electric arc additive system (3) and an ultrasonic vibration system (2), wherein the electric arc additive system (3) and the ultrasonic vibration system (2) are arranged above the titanium alloy substrate; when electric arc additive manufacturing is carried out, the constant-temperature heating table heats the titanium alloy substrate, the electric arc additive system forms a molten pool on the titanium alloy substrate through a welding gun and a wire feeding device of the electric arc additive system, and the ultrasonic output end of the ultrasonic vibration system moves along a solidified welding bead along with the welding gun, so that the position of the ultrasonic output end is close to the molten pool, and ultrasonic waves are output to the molten pool; the device can reduce the residual stress of the titanium alloy part manufactured by the electric arc additive material, avoids the layering phenomenon, can refine the microstructure of the titanium alloy additive material part, and improves the performance of the part.

Description

Technical Field

[0001] The utility model relates to the technical field of additive manufacturing equipment, in particular to an ultrasonic and thermal field coupled assisted arc additive manufacturing device for titanium alloy wires. Background Art

[0002] Titanium alloys are widely used in aerospace, shipbuilding and other fields due to their high specific strength, excellent fracture toughness and good corrosion resistance.

[0003] Compared to powder bed AM (powder bed AM) technologies using lasers and electron beams as heat sources, wire arc additive manufacturing (WAAM) offers advantages such as high material utilization, high deposition efficiency, and low equipment and operating costs, making it suitable for manufacturing large-scale titanium alloy structural components in the aerospace and shipbuilding industries. However, the high temperature gradient within the melt pool during manufacturing can lead to uneven expansion and contraction of titanium alloy parts, resulting in high residual stresses and deformation. Furthermore, the large temperature difference between the deposited layer and the substrate or adjacent layers can cause incomplete melting or insufficient remelting of the underlying metal, leading to delamination or separation in the manufactured parts. Preheating the substrate can reduce the temperature difference between the deposited layer and the substrate or adjacent layers, thereby reducing the temperature gradient within the melt pool. However, preheating the substrate prolongs the high-temperature dwell time of the weld bead and expands the heat-affected zone (HAZ). This can lead to the formation of coarse, epitaxially grown β-columnar grains during manufacturing of titanium alloy parts. This uneven microstructure can lead to anisotropic material properties.

[0004] Methods for reducing residual stress and refining the microstructure of arc-AM titanium alloy parts can be broadly categorized into two categories: post-processing and in-situ manipulation. Post-processing involves applying appropriate machining processes to the arc-AM titanium alloy parts after deposition, thereby reducing residual stress, refining the microstructure, and improving performance. In-situ manipulation involves reducing residual stress and refining the microstructure of titanium alloy parts through methods such as rolling, ultrasonic impact, or deposition path planning during the AM process.

[0005] In the prior art, a post-treatment process of stress relief annealing is used to improve the mechanical properties of arc additively manufactured titanium alloy parts and reduce the residual stress of the parts. In the prior art, pinch rollers are used to perform lateral rolling on arc additively manufactured titanium alloy parts, which significantly reduces the residual stress of the titanium alloy parts and refines their microstructure. However, the above two methods only support the processing of the parts after the deposition of the arc additively manufactured parts is completed, which reduces the production efficiency of arc additively manufactured parts. In addition, the annealing treatment of titanium alloys needs to be carried out in a vacuum or inert gas, which increases the process difficulty and production cost.

[0006] In response to the shortcomings of the above existing technical solutions, the present utility model patent solution proposes an ultrasonic and thermal field coupled assisted titanium alloy wire arc additive manufacturing device, which uses a constant temperature heating table as a heat source for preheating the substrate and the deposited layer, eliminating the safety hazards of heating the substrate and the deposited layer by electricity, and the heating temperature is more accurately controllable; combined with an ultrasonic gun fixed to the welding gun, it reduces the residual stress of titanium alloy parts in arc additive manufacturing and avoids delamination, while refining the microstructure of titanium alloy additive parts and improving part performance. The present utility model patent solution has the advantages of compact structure, high integration, significant effect, and strong applicability, and can provide strong technical support and process basis for reducing the residual stress of titanium alloy parts in arc additive manufacturing and refining their microstructure. Summary of the Invention

[0007] The utility model proposes an ultrasonic and thermal field coupled assisted titanium alloy wire arc additive manufacturing device, which can reduce the residual stress of titanium alloy parts manufactured by arc additive manufacturing and avoid delamination. At the same time, it can refine the microstructure of titanium alloy additive parts and improve the performance of parts.

[0008] The utility model adopts the following technical solutions.

[0009] An ultrasonic and thermal field coupled assisted arc additive manufacturing device for titanium alloy wire comprises a titanium alloy substrate (4) on a constant temperature heating table (1), and an arc additive system (3) and an ultrasonic vibration system (2) arranged above the titanium alloy substrate; when arc additive manufacturing is performed, the constant temperature heating table heats the titanium alloy substrate, the arc additive system forms a molten pool on the titanium alloy substrate with its welding gun and wire feeding device, and the ultrasonic output end of the ultrasonic vibration system moves along the solidified weld following the welding gun, so that the ultrasonic output end is positioned adjacent to the molten pool and outputs ultrasonic waves to the molten pool.

[0010] The ultrasonic output end of the ultrasonic vibration system is an ultrasonic needle clamped and fixed to the front end of the ultrasonic gun. When arc additive manufacturing is performed, the ultrasonic needle is pressed against the titanium alloy substrate or the solidified weld formed by the arc additive system to transmit the output ultrasonic wave to the molten pool of the titanium alloy part being manufactured.

[0011] The arc additive system is a front wire feeding type arc additive system, and the copper nozzle of its wire feeding device is fixed in front of the welding gun of the arc additive system and moves synchronously with the welding gun.

[0012] The constant temperature heating platform is placed at the center of the working platform (5) of the arc additive manufacturing device.

[0013] The constant temperature heating platform heats the titanium alloy substrate by using a heated aluminum plate, and the titanium alloy substrate is fixed to the central area of ​​the heated aluminum plate by a U-shaped clip.

[0014] The heating aluminum plate is equipped with multiple high-power heating tubes and metal temperature measuring heads.

[0015] The constant temperature heating table is equipped with a digital display control panel, and the heating temperature is adjustable within a range from room temperature to 400°C.

[0016] The ultrasonic vibration system includes a control panel for adjusting the ultrasonic power, and the adjustment range of the ultrasonic power is: 500W~1500W.

[0017] The ultrasonic gun of the ultrasonic vibration system and the welding gun of the arc additive system form an angle of 45 degrees; the ultrasonic needle of the ultrasonic vibration system is formed of tungsten steel that has undergone multiple heat treatments.

[0018] The welding gun of the arc additive system includes a porcelain nozzle, a flow guide, a tungsten electrode clamp, and a tungsten needle. The wire feeding copper nozzle of the arc additive system forms a 30-degree angle with the horizontal platform and does not contact the titanium alloy substrate during the arc additive manufacturing process.

[0019] The top surface of the titanium alloy substrate is a substrate additive surface that has been ground.

[0020] The utility model has the following beneficial effects:

[0021] (1) This patent addresses the problem of large residual stresses generated during arc additive manufacturing of titanium alloys, which causes severe deformation of manufactured parts and renders them unusable. This patent proposes a solution that integrates a heating device and an ultrasonic vibration system. By preheating the titanium alloy substrate before arc additive manufacturing begins, the temperature gradient of the molten pool is reduced, thereby achieving the purpose of reducing the residual stress of the manufactured parts. In addition, preheating the titanium alloy substrate can improve the bonding quality between the deposited layers and effectively avoid the delamination of arc additively manufactured parts. This device provides technical support and process basis for improving the forming quality of titanium alloy wire arc additively manufactured parts.

[0022] (2) This patent solution addresses the safety risks, low efficiency and difficulty in controlling temperature in the existing methods of preheating titanium alloy substrates using direct flame heating, DC pulse power supply heating and box-type resistance heat treatment furnace heating. It proposes to preheat the titanium alloy substrate by directly clamping it on the heated aluminum plate of a constant temperature heating table, thereby improving the efficiency and safety of thermal field-assisted titanium alloy arc additive manufacturing and the accuracy of preheating temperature control.

[0023] (3) This patented solution innovatively integrates a constant temperature heating table and an ultrasonic vibration system, which synergistically act on the titanium alloy arc additive manufacturing process. While applying a thermal field assist, it successfully refines the microstructure of titanium alloy arc additively manufactured parts. This overcomes the problem of epitaxial growth of β columnar crystals caused by the extended high temperature residence time of the weld bead due to preheating the substrate. While reducing the residual stress of titanium alloy arc additively manufactured parts, it also refines the microstructure of titanium alloy parts in situ, thereby improving the performance of the parts. This solution has the advantages of compact structure, high integration, significant effect, and strong applicability.

[0024] The utility model can provide powerful technical support and process basis for reducing the residual stress of titanium alloy parts manufactured by arc additive manufacturing and refining their microstructure.

[0025] The utility model designs a device based on the characteristics of arc additive manufacturing of titanium alloys and the characteristics of the forming process. It can reduce the residual stress of the formed parts, refine the microstructure of arc additive manufacturing titanium alloys, avoid the delamination of parts, and obtain arc additive manufacturing titanium alloy parts with small residual stress, uniform microstructure and good forming. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments:

[0027] Attachment Figure 1 This is a schematic structural diagram of the ultrasonic and thermal field coupling-assisted titanium alloy wire arc additive manufacturing device of the present invention;

[0028] Attachment Figure 2 This is a schematic diagram of the installation and use of the ultrasonic and thermal field coupling assisted titanium alloy wire arc additive manufacturing device of the present invention;

[0029] Attachment Figure 3 This is a schematic diagram of the working process of the ultrasonic and thermal field coupling-assisted titanium alloy wire arc additive manufacturing device of the present invention;

[0030] In the figure: 1-constant temperature heating table; 2-ultrasonic vibration system; 3-arc additive system; 4-titanium alloy substrate; 5-working platform. DETAILED DESCRIPTION

[0031] As shown in the figure, the ultrasonic and thermal field coupling-assisted titanium alloy wire arc additive manufacturing device includes a titanium alloy substrate 4 on a constant temperature heating platform 1, and an arc additive system 3 and an ultrasonic vibration system 2 arranged above the titanium alloy substrate; when arc additive manufacturing is performed, the constant temperature heating platform heats the titanium alloy substrate, and the arc additive system forms a molten pool on the titanium alloy substrate with its welding gun and wire feeding device, and the ultrasonic output end of the ultrasonic vibration system moves along the solidified weld following the welding gun, so that the position of the ultrasonic output end is close to the molten pool and outputs ultrasonic waves to the molten pool.

[0032] The ultrasonic output end of the ultrasonic vibration system is an ultrasonic needle clamped and fixed to the front end of the ultrasonic gun. When arc additive manufacturing is performed, the ultrasonic needle is pressed against the titanium alloy substrate or the solidified weld formed by the arc additive system to transmit the output ultrasonic wave to the molten pool of the titanium alloy part being manufactured.

[0033] The arc additive system is a front wire feeding type arc additive system, and the copper nozzle of its wire feeding device is fixed in front of the welding gun of the arc additive system and moves synchronously with the welding gun.

[0034] The constant temperature heating platform is placed at the center of the working platform 5 of the arc additive manufacturing device.

[0035] The constant temperature heating platform heats the titanium alloy substrate by using a heated aluminum plate, and the titanium alloy substrate is fixed to the central area of ​​the heated aluminum plate by a U-shaped clip.

[0036] The heating aluminum plate is equipped with multiple high-power heating tubes and metal temperature measuring heads.

[0037] The constant temperature heating table is equipped with a digital display control panel, and the heating temperature is adjustable within a range from room temperature to 400°C.

[0038] The ultrasonic vibration system includes a control panel for adjusting the ultrasonic power, and the adjustment range of the ultrasonic power is: 500W~1500W.

[0039] The ultrasonic gun of the ultrasonic vibration system and the welding gun of the arc additive system form an angle of 45 degrees; the ultrasonic needle of the ultrasonic vibration system is formed of tungsten steel that has undergone multiple heat treatments.

[0040] The welding gun of the arc additive system includes a porcelain nozzle, a flow guide, a tungsten electrode clamp, and a tungsten needle. The wire feeding copper nozzle of the arc additive system forms a 30-degree angle with the horizontal platform and does not contact the titanium alloy substrate during the arc additive manufacturing process.

[0041] The top surface of the titanium alloy substrate is a substrate additive surface that has been ground.

[0042] Example 1:

[0043] like Figure 1As shown in the figure, the ultrasonic and thermal field coupling-assisted arc additive manufacturing device for titanium alloy wire proposed in this embodiment has the following structural features: a constant temperature heating platform 1, an ultrasonic vibration system 2, an arc additive system 3, and a titanium alloy substrate 4. The connection relationship between the various components is as follows: the constant temperature heating platform 1 is placed on the arc additive work platform, the titanium alloy substrate 4 is fixed to the heated aluminum plate of the constant temperature heating platform 1, the arc additive system 3 welding gun is located directly above and perpendicular to the titanium alloy substrate 4, the ultrasonic vibration system 2 ultrasonic gun is fixed to the rear of the arc additive system 3 welding gun and is connected to the ultrasonic controller of the ultrasonic vibration system 2 via a connecting cable, the ultrasonic needle of the ultrasonic vibration system 2 is clamped to the front end of the ultrasonic vibration system 2 ultrasonic gun and pressed tightly against the titanium alloy substrate 4 or the previous weld bead, and the arc additive system 3 wire feeding copper nozzle is fixed to the front of the arc additive system 3 welding gun using a front wire feeding method and moves synchronously with the arc additive system 3 welding gun.

[0044] In this example, the features of each component are designed as follows:

[0045] The constant temperature heating platform (1) has a rated power of 1500W and a heated aluminum plate measuring 300×300mm. The heated aluminum plate is equipped with three 500W high-power heating tubes (9.8mm in diameter) and a metal temperature probe. It is equipped with a digital display control panel and an adjustable temperature range of room temperature to 400°C. The ultrasonic controller of the ultrasonic vibration system (2) has an output frequency of 20kHz, and the ultrasonic power can be adjusted via the control panel within a range of 500W to 1500W. The ultrasonic gun of the ultrasonic vibration system (2) has an output power of 500W to 1500W, an output frequency of 20kHz, and an output amplitude of 100±5μm. The ultrasonic gun of the ultrasonic vibration system (2) is positioned at a 45° angle to the welding gun of the arc additive system (3). The ultrasonic needle of the ultrasonic vibration system (2) is made of tungsten steel that has undergone six heat treatments, achieving the required hardness and toughness for the impact needle. The point of application of the ultrasonic needle of the ultrasonic vibration system (2) should be kept at an appropriate distance from the molten pool, as close as possible to the molten pool without affecting the partially solidified weld bead, to increase the intensity of the ultrasonic waves transmitted to the molten pool. The arc additive system 3 welding gun includes a porcelain nozzle, flow guide, tungsten electrode holder, and tungsten needle. The porcelain nozzle end face is 6mm from the substrate, and the tungsten electrode extends 1mm beyond the porcelain nozzle end face. The arc additive system 3 copper wire feed nozzle is angled 30° with the horizontal plane to ensure that the copper wire feed nozzle does not contact the titanium alloy substrate 4 during the arc additive process. The titanium alloy substrate 4 is 8mm thick, and the substrate surface for additive processing requires grinding.

[0046] like Figure 2As shown, the ultrasonic and thermal field coupling-assisted arc additive manufacturing device for titanium alloy wire proposed in this embodiment is installed and used as follows: The constant temperature heating platform 1 is placed at the center of the arc additive work platform 5; the titanium alloy substrate 4 is fixed to the center of the heated aluminum plate of the constant temperature heating platform 1 using a U-shaped clamp; and the ultrasonic gun of the ultrasonic vibration system 2 is fixed behind the welding gun of the arc additive system 3. Before the additive manufacturing process begins, all components of the ultrasonic and thermal field coupling-assisted arc additive manufacturing device for titanium alloy wire are clamped; the angles and distances between the welding gun, wire feed nozzle, and ultrasonic gun of the arc additive system 3 are adjusted, and the arc additive system 3 and the ultrasonic gun of the ultrasonic vibration system 2 are moved to the starting point of the additive manufacturing process; the constant temperature heating platform 1 is turned on and the target temperature of the constant temperature heating platform 1 is set through the control panel, causing the constant temperature heating platform 1 to begin heating and preheating the titanium alloy substrate 4; after the temperature of the constant temperature heating platform 1 reaches the target temperature and is maintained at that temperature for 20 minutes, the ultrasonic vibration system 2 is turned on and the ultrasonic power is adjusted to the appropriate level through the ultrasonic controller control panel. After the preparation work is completed, the welding machine can be started for titanium alloy arc additive manufacturing. After the first layer is deposited, the constant temperature heating platform 1 and the ultrasonic vibration system 2 are turned off. After the deposited layer cools to the target temperature, the constant temperature heating platform 1 is turned on again and the ultrasonic vibration system 2 is turned on to deposit the second layer. This reciprocating process can obtain titanium alloy arc additive manufacturing parts with low residual stress and uniform microstructure.

[0047] Based on the structural characteristics and working principle of the ultrasonic and thermal field coupled assisted titanium alloy wire arc additive manufacturing device proposed in this example, it is possible to in-situ control the microstructure of the formed part and reduce the residual stress of the formed part during the arc additive manufacturing process. Figure 2 As shown, before arc additive manufacturing, the arc additive system 3 together with the ultrasonic gun of the connected ultrasonic vibration system 2 is moved to the additive starting point, the constant temperature heating table 1 is started and the target temperature is set, and the temperature of the constant temperature heating table 1 is raised to the target temperature and kept warm for twenty minutes, and the ultrasonic vibration system 2 is started and the output power is adjusted to an appropriate value, and then the welding machine is started to start arc additive manufacturing.

[0048] The device described in this example is suitable for use in situations where arc additive manufacturing of titanium alloy parts requires low residual stress, uniform microstructure, and good interlayer bonding quality.

[0049] like Figure 3 As shown in the figure, the ultrasonic and thermal field coupled assisted arc additive manufacturing device for titanium alloy wire proposed in this scheme has the following specific working process:

[0050] (1) Place the constant temperature heating table at the center of the arc additive work platform; fix the titanium alloy substrate to the center of the heated aluminum plate of the constant temperature heating table through a U-shaped clamp, and fix the ultrasonic gun behind the welding gun;

[0051] (2) Adjust the distance and angle between the arc additive system welding gun and the substrate, adjust the distance and horizontal angle between the wire feed nozzle and the welding gun, adjust the angle between the ultrasonic gun and the welding gun, and move the arc additive system together with the ultrasonic gun to the starting point of the arc additive;

[0052] (3) Turn on the constant temperature heating table, wait for the temperature of the heating table to rise to the target temperature and then keep it warm. After keeping it warm for 20 minutes, turn on the ultrasonic vibration system and adjust the ultrasonic power to the appropriate value;

[0053] (4) Control the arc additive system to start depositing the first layer of the titanium alloy part. After the first layer is deposited, turn off the constant temperature heating stage and the ultrasonic vibration system, and naturally cool the substrate and the deposited layer.

[0054] (5) After the deposited layer cools to the set temperature of the constant temperature heating stage, the constant temperature heating stage and the ultrasonic vibration system are turned on again to deposit the next layer. This step is repeated until the titanium alloy part is manufactured;

[0055] (6) Turn off the constant temperature heating table and ultrasonic vibration system, and remove the titanium alloy formed parts completed by additive manufacturing.

[0056] Example 2:

[0057] In this example, the installation and use of the device are as follows: placing the constant temperature heating table at the center of the arc additive work platform; fixing the titanium alloy substrate to the center of the heated aluminum plate of the constant temperature heating table with a U-shaped clamp. Before the start of additive manufacturing, the various parts of the ultrasonic and thermal field coupling-assisted titanium alloy wire arc additive manufacturing device are clamped; adjusting the angle and distance between the arc additive system welding gun, wire feed nozzle, and ultrasonic vibration system ultrasonic gun, and moving the arc additive system together with the ultrasonic vibration system ultrasonic gun to the additive starting point; turning on the constant temperature heating table and setting the target temperature of the constant temperature heating table through the control panel, so that the constant temperature heating table begins to heat up and preheat the titanium alloy substrate; after the temperature of the constant temperature heating table rises to the target temperature and is kept warm for 20 minutes, turning on the ultrasonic vibration system and adjusting the ultrasonic power to the appropriate level through the ultrasonic controller control panel. After the preparation work is completed, the welding machine can be started for titanium alloy arc additive manufacturing. After the first layer is deposited, the constant temperature heating table and ultrasonic vibration system are turned off. After the deposited layer cools to the target temperature, the constant temperature heating table is turned on again and the ultrasonic vibration system is turned on to deposit the second layer. Repeat this process to obtain titanium alloy arc additive manufacturing parts with low residual stress and uniform microstructure.

[0058] The proposed ultrasonic and thermal field-coupled arc additive manufacturing (AM) device for titanium alloy wires employs the following principles: a constant-temperature heating platform is placed on the AM work platform, and a titanium alloy substrate is clamped onto the heated aluminum plate of the platform to prevent substrate displacement during AM. An ultrasonic gun is secured behind the welding torch at a 45° angle, placing the ultrasonic needle's point of action closer to the molten pool and increasing the intensity of ultrasound transmitted into the molten pool. Before AM begins, the constant-temperature heating platform is used to fully preheat the titanium alloy substrate, reducing residual stress and improving interlayer bonding quality in the AM-produced titanium alloy part. By placing an ultrasonic gun behind the welding torch, tightly against the solidified weld bead, ultrasonic waves are transmitted into the molten pool of the AM-produced titanium alloy part. The cavitation and stirring effects generated by the ultrasound break up the epitaxially grown β-columnar crystals in the molten pool, achieving in-situ microstructure refinement of the titanium alloy AM part.

Claims

1. Ultrasonic and thermal field coupling assisted titanium alloy wire arc additive manufacturing device, characterized by: The invention comprises a titanium alloy substrate (4) on a constant temperature heating table (1), and an arc additive system (3) and an ultrasonic vibration system (2) arranged above the titanium alloy substrate; when arc additive manufacturing is performed, the constant temperature heating table heats the titanium alloy substrate, the arc additive system forms a molten pool on the titanium alloy substrate with its welding gun and wire feeding device, and the ultrasonic output end of the ultrasonic vibration system moves along the solidified weld following the welding gun, so that the ultrasonic output end is positioned adjacent to the molten pool and outputs ultrasonic waves to the molten pool.

2. The ultrasonic and thermal field coupling-assisted arc additive manufacturing device for titanium alloy wire according to claim 1, characterized in that: The ultrasonic output end of the ultrasonic vibration system is an ultrasonic needle clamped and fixed to the front end of the ultrasonic gun. When arc additive manufacturing is performed, the ultrasonic needle is pressed against the titanium alloy substrate or the solidified weld formed by the arc additive system to transmit the output ultrasonic wave to the molten pool of the titanium alloy part being manufactured.

3. The ultrasonic and thermal field coupling-assisted arc additive manufacturing device for titanium alloy wire according to claim 1, characterized in that: The arc additive system is a front wire feeding type arc additive system, and the copper nozzle of its wire feeding device is fixed in front of the welding gun of the arc additive system and moves synchronously with the welding gun.

4. The ultrasonic and thermal field coupling-assisted arc additive manufacturing device for titanium alloy wire according to claim 1, characterized in that: The constant temperature heating platform is placed at the center of the working platform (5) of the arc additive manufacturing device.

5. The ultrasonic and thermal field coupling-assisted arc additive manufacturing device for titanium alloy wire according to claim 1, characterized in that: The constant temperature heating platform heats the titanium alloy substrate by using a heated aluminum plate, and the titanium alloy substrate is fixed to the central area of ​​the heated aluminum plate by a U-shaped clip.

6. The ultrasonic and thermal field coupling-assisted arc additive manufacturing device for titanium alloy wire according to claim 5, characterized in that: The heating aluminum plate is equipped with multiple high-power heating tubes and metal temperature measuring heads.

7. The ultrasonic and thermal field coupling-assisted arc additive manufacturing device for titanium alloy wire according to claim 1, characterized in that: The constant temperature heating table is equipped with a digital display control panel, and the heating temperature is adjustable within a range from room temperature to 400°C. The ultrasonic vibration system includes a control panel for adjusting the ultrasonic power, and the adjustment range of the ultrasonic power is: 500W~1500W.

8. The ultrasonic and thermal field coupling-assisted arc additive manufacturing device for titanium alloy wire according to claim 1, characterized in that: The ultrasonic gun of the ultrasonic vibration system and the welding gun of the arc additive system form an angle of 45 degrees; the ultrasonic needle of the ultrasonic vibration system is formed of tungsten steel that has undergone multiple heat treatments.

9. The ultrasonic and thermal field coupling-assisted arc additive manufacturing device for titanium alloy wire according to claim 1, characterized in that: The welding gun of the arc additive system includes a porcelain nozzle, a flow guide, a tungsten electrode clamp, and a tungsten needle. The wire feeding copper nozzle of the arc additive system forms a 30-degree angle with the horizontal platform and does not contact the titanium alloy substrate during the arc additive manufacturing process.

10. The ultrasonic and thermal field coupling-assisted arc additive manufacturing device for titanium alloy wire according to claim 1, characterized in that: The top surface of the titanium alloy substrate is a substrate additive surface that has been ground.

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