Four-wire plasma arc fuse additive manufacturing device and additive manufacturing method
Through the four-wire plasma arc fuse additive manufacturing device, the four-wire wire feeding system and the hot wire device are used to realize multi-wire eutectic layer by layer stacking, solving the problem of long manufacturing time of large parts and improving production efficiency and material selectivity.
Patent Information
- Application Number
- CN202510772887.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-11
- Publication Date
- 2025-07-29
AI Technical Summary
The deposition rate of metals fed by existing single filaments is limited, resulting in a long manufacturing time for large parts, making it difficult to meet the rapid response and development of silk materials of multiple varieties and small batches, and the efficiency of traditional plasma arc additive manufacturing is low.
The four-wire wire feeding system and four-wire heat wire device are used to control the feeding and heating of four types of wire materials through four wire feeders and hot wire power supplies, and combined with the plasma arc welding system, multi-wire eutectic and layer-by-layer stacking forming are achieved.
The deposition rate and forming speed are improved, material selectivity is enhanced, gradient functional materials can be manufactured, and production efficiency and material utilization are improved.
Smart Images
Figure CN120382226A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the fields of metal welding and additive manufacturing, and mainly relates to a four-wire plasma arc additive manufacturing device and method. Background Art
[0002] Additive manufacturing breaks the traditional modes of subtractive manufacturing and isoparametric manufacturing. By directly manufacturing three-dimensional solid parts in a layer-by-layer cumulative manner, it realizes the leap from two-dimensional design to three-dimensional manufacturing, and is a new generation of manufacturing technology with the significance of triggering a production revolution. Additive manufacturing has many advantages, such as high material utilization rate, low manufacturing cost, short production cycle, and can achieve rapid near-net shaping. It can also complete the moldless and high-degree-of-freedom forming of precision and complex parts.
[0003] As an important part of the additive manufacturing field, the additive manufacturing of metal materials is also a key research content in the additive manufacturing field. Among them, plasma arc additive manufacturing has the characteristics of high energy density and high temperature. During the additive manufacturing process, the equipment scans the forming path obtained by layer-by-layer slicing of the part, forms a moving molten pool on the metal substrate, and continuously feeds the metal droplets melted from the externally filled metal wire into the molten pool. By gradually accumulating metal materials point by point, line by line, and layer by layer on the forming path, the forming of the part is realized. This technology has many advantages. The manufactured parts have uniform composition, high density, excellent microstructure and mechanical properties, can realize the additive manufacturing of various large-size metal components, save more materials compared with traditional forging machining, and have the advantages of low cost and high performance.
[0004] However, due to the limited metal deposition rate of single-wire feeding, for the manufacturing of large parts, it takes a long time to complete, and the production efficiency is relatively low; the manufacturing of wire materials involves complex processes such as melting, multiple extrusions, and multiple drawing, which is difficult to meet the rapid response research and development of new wire materials with multiple varieties and small batches, seriously restricting the design and application of new materials. Traditional plasma arc additive manufacturing may be difficult to meet the requirements. Therefore, it is necessary to propose a four-wire plasma arc wire melting additive manufacturing device and an additive manufacturing method. Summary of the Invention
[0005] In view of this, the purpose of the present invention is to provide a four-wire plasma arc wire melting additive manufacturing device and method to overcome the above-mentioned deficiencies of the prior art.
[0006] To achieve the above purpose, the present invention provides a four-wire plasma arc wire melting additive manufacturing device:
[0007] It includes a four-wire wire feeding system 5. The four-wire wire feeding system 5 includes wire feeder Ⅰ, wire feeder Ⅱ, wire feeder Ⅲ, wire feeder Ⅳ, wire feeding pipes, and a wire feeding nozzle 3. Wire feeder Ⅰ, wire feeder Ⅱ, wire feeder Ⅲ, and wire feeder Ⅳ convey the arc welding wires of their respective wire reels to the corresponding wire feeding nozzles 3 through the wire feeding pipes. Among them: Wire feeder Ⅰ, wire feeder Ⅱ, wire feeder Ⅲ, and wire feeder Ⅳ are connected to the wire feeding coordination module through cable wires and are connected to the control cabinet 4, and the wire feeding speed and start / stop state of each wire feeder can be adjusted through the control cabinet 4; Wire feeder Ⅰ, wire feeder Ⅱ, wire feeder Ⅲ, and wire feeder Ⅳ correspond to their respective wire reels and can be installed with different materials; The wire feeding nozzle 3 is fixed at the corresponding position of the welding torch 1 through a wire feeding fixture 2.
[0008] It includes a four-wire hot wire device 6. The four-wire hot wire device 6 includes hot wire power supply Ⅰ, hot wire power supply Ⅱ, hot wire power supply Ⅲ, and hot wire power supply Ⅳ. Among them: The negative poles of hot wire power supply Ⅰ, hot wire power supply Ⅱ, hot wire power supply Ⅲ, and hot wire power supply Ⅳ are connected to the copper pipe tails of the corresponding wire feeding nozzles 3 through nuts, and the positive poles of hot wire power supply Ⅰ, hot wire power supply Ⅱ, hot wire power supply Ⅲ, and hot wire power supply Ⅳ are connected to the workbench 7.
[0009] It includes a plasma arc welding system. The plasma arc welding system includes a welding torch 1, a plasma welding power supply 8, a chiller, and an argon gas cylinder 9. The plasma welding power supply 8 is connected and controlled by the control cabinet 4. The welding torch 1 is fixed on a three-axis numerical control machine tool. The argon gas cylinder 9 and the chiller are connected to the plasma welding power supply 8 and communicate with the inside of the welding torch 1.
[0010] An additive manufacturing method based on a four-wire plasma arc wire melting additive manufacturing device includes the following steps:
[0011] Step 1: Select the first wire material, the second wire material, the third wire material, and the fourth wire material according to the composition of the required deposited material, and install them on the wire reels above the corresponding wire feeder Ⅰ, wire feeder Ⅱ, wire feeder Ⅲ, and wire feeder Ⅳ of the four-wire wire feeding system 5 respectively.
[0012] Step 2: Adjust the vertical positions and horizontal angles of the four wire feeding nozzles 3 on the wire feeding fixture 2 so that the extension lines of the first wire material, the second wire material, the third wire material, and the fourth wire material sent out by wire feeder Ⅰ, wire feeder Ⅱ, wire feeder Ⅲ, and wire feeder Ⅳ intersect directly below the welding torch 1 and directly above the substrate clamped by the workbench 7, so that the first wire material, the second wire material, the third wire material, and the fourth wire material can be melted in the same molten pool. Then, finely adjust the angle of the wire feeding fixture 2 so that the distance between the intersection point of the first wire material, the second wire material, the third wire material, and the fourth wire material and the nozzle of the welding torch 1 is 10 mm.
[0013] Step 3: Install a protective cover around the workbench 7 and fill it with argon gas.
[0014] Step 4: Before depositing the material, start the computer built in the control cabinet 4, preset the process parameters, adjust and select the wire feeding speeds of the first wire, the second wire, the third wire, and the fourth wire respectively according to the composition of the deposited material, and write the codes required for the three-axis numerical control machine tool.
[0015] Step 5: Both the shielding gas and the ionic gas are argon. Open the gas valve of the argon gas cylinder 9, check the gas flow rate of the argon gas, and adjust the panel knob of the plasma welding power source 8 to make the ionic gas flow rate be 4 - 5 L / min and the shielding gas flow rate be 8 - 10 L / min, which is convenient for the starting of the pilot arc.
[0016] Step 6: Move the welding torch 1 to the starting position through controlling the three-axis numerical control machine tool. Turn on the hot wire power source I, the hot wire power source II, the hot wire power source III, and the hot wire power source IV. Press the pilot arc switch of the three-axis numerical control machine tool to start the pilot arc. After the pilot arc is stable, start the program. The code includes the main arc starting instruction and the wire feeder starting instruction, and the wire feeder starting instruction should be located after the main arc starting instruction, so that after the main arc is started, the wire feeders I, II, III, and IV start to synchronously feed the wire materials and deposit the materials according to the preset route.
[0017] Step 7: When the deposition of one layer is completed, send an instruction through the control cabinet 4 to extinguish the main arc, close the wire feeders I, II, III, and IV respectively, manually turn off the hot wire power source I, the hot wire power source II, the hot wire power source III, and the hot wire power source IV, and wait for the cladding layer to cool for a certain period of time.
[0018] Step 8: Repeat Step 6 and Step 7 until the deposition of all layers is completed.
[0019] Step 9: After the deposition of the material is completed, manually turn off the pilot arc, move the welding torch 1 to an appropriate position through controlling the three-axis numerical control machine tool, and initialize the system.
[0020] Optimized: It also includes a control cabinet 4. The hot wire control module of the control cabinet 4 can control the current magnitude and the heating method of the hot wire power source I, the hot wire power source II, the hot wire power source III, and the hot wire power source IV.
[0021] Optimized: A ceramic tube with an inner diameter of 14 mm is installed between the wire feeding nozzle 3 and the wire feeding fixture 2 of the four-wire wire feeding system 5 to ensure the insulation and heat insulation between the wire feeding fixture 2 and the copper tube of the wire feeding nozzle 3.
[0022] Optimized: The hot wire power source I, the hot wire power source II, the hot wire power source III, and the hot wire power source IV of the four-wire hot wire device 6 are connected to the copper tube of the wire feeding nozzle 3 through threads.
[0023] Optimized: The workbench 7 is installed on the three-axis numerical control machine tool and fixedly clamps the substrate through the T-slot. The size of the workbench 7 is 300*400*150 mm, and the workbench 7 can be flexibly replaced with workbenches of different specifications.
[0024] Compared with the prior art, the present invention has the following beneficial effects:
[0025] Beneficial effect 1: High degree of automation. The control cabinet 4 of this device integrates the control systems of each module, and can simultaneously control arc starting, movement of the three-axis numerical control machine tool, wire feeding, hot wire parameters, etc., with convenient and efficient operation.
[0026] Beneficial effect 2: The design of the four-wire wire feeding system 5 and the four-wire hot wire device 6 is adopted, which improves the deposition rate and forming speed, and improves production efficiency.
[0027] Beneficial effect 3: The four-wire wire feeding system 5 enables more diverse material selection. Materials that are difficult to directly draw into wires can also achieve co-melting of multiple wires in the molten pool, and then be stacked layer by layer to form a shape. Gradient functional materials can also be manufactured, making the additive manufacturing of various materials more extensive and convenient. Brief Description of the Drawings
[0028] Figure 1 It is a schematic structural diagram of the welding torch of the present invention;
[0029] Figure 2 It is a schematic structural diagram of the four-wire plasma arc wire melting additive manufacturing device of the present invention.
[0030] Reference numerals: 1, welding torch; 2, wire feeding clamp; 3, wire feeding nozzle; 4, control cabinet; 5, four-wire wire feeding system; 6, four-wire hot wire device; 7, workbench; 8, plasma welding power source; 9, argon gas cylinder. Detailed Embodiments
[0031] To make the purpose, advantages and technical solutions of the present invention clearer, the devices and methods involved in the present invention will be further described below with reference to the drawings:
[0032] Embodiment 1
[0033] A four-wire plasma arc wire melting additive manufacturing device: including a four-wire wire feeding system 5, the four-wire wire feeding system 5 includes wire feeder I, wire feeder II, wire feeder III, and wire feeder IV customized by Shandong Aotai Electric Co., Ltd. In addition, it includes wire feeding pipes and a wire feeding nozzle 3. Wire feeder I, wire feeder II, wire feeder III, and wire feeder IV transport the arc wires of their respective wire reels to the corresponding wire feeding nozzles 3 through the wire feeding pipes; among them: Wire feeder I, wire feeder II, wire feeder III, and wire feeder IV are connected to the wire feeding coordination module through cable wires and are connected to the control cabinet 4. The wire feeding speed and start-stop state of each wire feeder can be adjusted through the control cabinet 4; Wire feeder I, wire feeder II, wire feeder III, and wire feeder IV correspond to their respective wire reels and can be installed with different materials; the wire feeding nozzle 3 is fixed at the corresponding position of the welding torch 1 through the wire feeding clamp 2.
[0034] Optimized: A ceramic tube with an inner diameter of 14 mm is installed between the wire feeding nozzle 3 of the four-wire wire feeding system 5 and the wire feeding fixture 2 to ensure insulation and heat insulation between the wire feeding fixture 2 and the copper tube of the wire feeding nozzle 3. The wire feeding nozzle 3 also includes a wire outlet, which is located below the nozzle of the welding torch 1, and the wire outlet moves synchronously with the welding torch 1.
[0035] Optimized: The four-wire wire feeding system 5 further includes a wire spool, a wire spool holder, and a wire feeding coordination module. The wire spool is installed on the wire spool holder, and the wire spool holder is fixed above the wire feeder (wire feeder I, wire feeder II, wire feeder III, wire feeder IV).
[0036] A four-wire plasma arc wire melting additive manufacturing device: It includes a four-wire hot wire device 6, and the four-wire hot wire device 6 includes a hot wire power supply I, a hot wire power supply II, a hot wire power supply III, and a hot wire power supply IV, all of which are of the model Aotai HW-200. Among them: the negative poles of the hot wire power supply I, hot wire power supply II, hot wire power supply III, and hot wire power supply IV are connected to the copper tube tails of the corresponding wire feeding nozzles 3 through nuts, and the positive poles of the hot wire power supply I, hot wire power supply II, hot wire power supply III, and hot wire power supply IV are connected to the workbench 7.
[0037] Optimized: The hot wire power supply I, hot wire power supply II, hot wire power supply III, and hot wire power supply IV of the four-wire hot wire device 6 are connected to the copper tubes of the wire feeding nozzles 3 through threads. The metal sheets at the ends of the power supply wires of the hot wire power supply I, hot wire power supply II, hot wire power supply III, and hot wire power supply IV can be sleeved on the tails and fixed by nuts. The hot wire current range is 0 - 200 A.
[0038] Optimized: The workbench 7 is installed on a three-axis numerical control machine tool and is fixed and clamped to the substrate through T-shaped grooves. The size of the workbench 7 is 300 * 400 * 150 mm, and the workbench 7 can be flexibly replaced with workbenches of different specifications.
[0039] A four-wire plasma arc wire melting additive manufacturing device: It includes a plasma arc welding system. The plasma arc welding system includes a welding torch 1, a plasma welding power supply 8, a chiller (the plasma arc welding system requires a chiller to reduce the mechanical compression effect through condensed water), and an argon gas cylinder 9. The plasma welding power supply 8 is connected and controlled by a control cabinet 4. The welding torch 1 is fixed on a three-axis numerical control machine tool, and the argon gas cylinder 9 and the chiller are connected to the plasma welding power supply 8 and communicate with the inside of the welding torch 1.
[0040] Optimized: The plasma welding power supply 8 is fixed on a three-axis numerical control machine tool and moves with the three-axis numerical control machine tool. As an arc device for melting metal wire materials and heating workpieces, the plasma welding power supply 8 can provide a current range of 0 - 400 A.
[0041] A four-wire plasma arc fuse additive manufacturing device includes a control cabinet 4. The hot wire control module of the control cabinet 4 can control the current size and heating mode (DC heating mode or AC heating mode) of hot wire power supply I, hot wire power supply II, hot wire power supply III, and hot wire power supply IV.
[0042] A four-wire plasma arc fuse additive manufacturing device: includes a Mecaweld-M2 welding camera, which is fixed to a welding gun 1 and can be connected to an external display to assist in observing the state of the molten pool and facilitate the adjustment of process parameters.
[0043] Example 2
[0044] An additive manufacturing method based on a four-wire plasma arc fuse additive manufacturing device is capable of conducting single-pass multi-layer construction four-hot-wire efficient additive manufacturing experiments on TA15 titanium alloy, comprising the following steps:
[0045] Step 1. Select the first wire, the second wire, the third wire, and the fourth wire according to the required deposition material composition. In this embodiment, take the TA15 wire with a diameter of 1.6 mm as an example. Take four reels and install them on the wire reels above the wire feeder I, wire feeder II, wire feeder III, and wire feeder IV corresponding to the four-wire feeding system 5 respectively, and feed the four reels of wire into the wire feeding tube through the corresponding wire feeder I, wire feeder II, wire feeder III, and wire feeder IV.
[0046] Step 2. Adjust the vertical position and horizontal angle of the four wire feeding nozzles 3 on the wire feeding clamp 2 so that the extension lines of the first wire, the second wire, the third wire, and the fourth wire fed by wire feeder I, wire feeder II, wire feeder III, and wire feeder IV intersect directly below the welding gun 1 and directly above the substrate clamped by the workbench 7, so that the first wire, the second wire, the third wire, and the fourth wire can be melted in the same molten pool, and then finely adjust the angle of the wire feeding clamp 2 so that the distance between the intersection of the first wire, the second wire, the third wire, and the fourth wire and the nozzle of the welding gun 1 is 10 mm.
[0047] Step 3: Install a protective cover on the periphery of the workbench 7 and fill it with argon gas.
[0048] Step 4: Before depositing the materials, start the computer in the control cabinet 4, preset the process parameters, adjust the wire feeding speeds of the first wire, the second wire, the third wire, and the fourth wire according to the composition of the deposited materials, and write the code required for the three-axis CNC machine tool.
[0049] Step 5: Both shielding gas and ion gas use argon. Open the valve of argon cylinder 9 and check the gas flow of argon. Adjust the panel knob of plasma welding power supply 8 to make the ion gas flow at 4-5L / min and the shielding gas flow at 8-10L / min to facilitate arc starting.
[0050] Step 6: Move the welding torch 1 to the starting position by controlling the three-axis CNC machine tool. Turn on the hot wire power supply I, hot wire power supply II, hot wire power supply III, and hot wire power supply IV. Press the pilot arc switch of the three-axis CNC machine tool to start the pilot arc. After the pilot arc is stable, start the program. The code includes the main arc start instruction and the wire feeder start instruction, and the wire feeder start instruction should be located after the main arc start instruction, so that after the main arc starts, the wire feeders I, II, III, and IV start to synchronously feed the wire materials and deposit the materials according to the preset route.
[0051] Step 7: When the deposition of one layer is completed, send an instruction through the control cabinet 4 to extinguish the main arc, close the wire feeders I, II, III, and IV respectively, manually turn off the hot wire power supply I, hot wire power supply II, hot wire power supply III, and hot wire power supply IV, and wait for the cladding layer to cool for a certain period of time.
[0052] Step 8: Repeat Step 6 and Step 7 until the deposition of all layers is completed.
[0053] Step 9: After the deposition of the materials is completed, manually turn off the pilot arc, move the welding torch 1 to an appropriate position by controlling the three-axis CNC machine tool, and initialize the system.
[0054] The above detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention.
Claims
1. A four-wire plasma arc wire feeding additive manufacturing device, characterized in that: It includes a four-wire wire feeding system (5), and the four-wire wire feeding system (5) includes wire feeder I, wire feeder II, wire feeder III, wire feeder IV, wire feeding pipes and wire feeding nozzles (3). Wire feeder I, wire feeder II, wire feeder III, and wire feeder IV transport the arc welding wires of their respective wire reels to the corresponding wire feeding nozzles (3) through the wire feeding pipes. Among them: Wire feeder I, wire feeder II, wire feeder III, and wire feeder IV are connected to the wire feeding coordination module through cable wires and are connected to the control cabinet (4), and the wire feeding speed and start / stop state of each wire feeder can be adjusted through the control cabinet (4); Wire feeder I, wire feeder II, wire feeder III, and wire feeder IV correspond to their respective wire reels and can be installed with different materials; The wire feeding nozzles (3) are fixed at the corresponding positions of the welding torch (1) through wire feeding clamps (2); It includes a four-wire hot wire device (6), and the four-wire hot wire device (6) includes hot wire power supply I, hot wire power supply II, hot wire power supply III, and hot wire power supply IV. Among them: The negative electrodes of the hot wire power supply I, hot wire power supply II, hot wire power supply III, and hot wire power supply IV are connected to the copper pipe tails of the corresponding wire feeding nozzles (3) through nuts, and the positive electrodes of the hot wire power supply I, hot wire power supply II, hot wire power supply III, and hot wire power supply IV are connected to the workbench (7); It includes a plasma arc welding system, and the plasma arc welding system includes a welding torch (1), a plasma welding power supply (8), a chiller and an argon gas cylinder (9). The plasma welding power supply (8) is connected and controlled by the control cabinet (4). The welding torch (1) is fixed on a three-axis numerical control machine tool. The argon gas cylinder (9) and the chiller are connected to the plasma welding power supply (8) and communicate with the inside of the welding torch (1) to provide ion gas, shielding gas and cooling conditions.
2. The four-wire plasma arc fused wire additive manufacturing device according to claim 1, characterized in that, It also includes a control cabinet (4), and the hot wire control module of the control cabinet (4) can control the current magnitude and heating method of the hot wire power supply I, hot wire power supply II, hot wire power supply III, and hot wire power supply IV.
3. The four-wire plasma arc wire feeding additive manufacturing device according to claim 1, characterized in that A ceramic tube with an inner diameter of 14 mm is installed between the wire feeding nozzle (3) and the wire feeding clamp (2) of the four-wire wire feeding system (5) to ensure insulation and heat insulation between the wire feeding clamp (2) and the copper pipe of the wire feeding nozzle (3).
4. The four-wire plasma arc fused wire additive manufacturing device according to claim 1, wherein The hot wire power supply I, hot wire power supply II, hot wire power supply III, and hot wire power supply IV of the four-wire hot wire device (6) are connected to the copper pipe of the wire feeding nozzle (3) through threads.
5. The four-wire plasma arc fused wire additive manufacturing device according to claim 1, characterized in that, The workbench (7) is installed on a three-axis numerical control machine tool and fixedly clamps the substrate through a T-shaped groove. The size of the workbench (7) is 300*400*150 mm, and the workbench (7) can be flexibly replaced with workbenches of different specifications.
6. An additive manufacturing method for the four-wire plasma arc wire feeding additive manufacturing device according to claim 1, characterized in that, It includes the following steps: Step 1, select the first wire material, second wire material, third wire material, and fourth wire material according to the composition of the required cladding material, and install them on the wire reels above the corresponding wire feeder I, wire feeder II, wire feeder III, and wire feeder IV of the four-wire wire feeding system (5) respectively; Step 2: Adjust the vertical positions and horizontal angles of the four wire feeding nozzles (3) on the wire feeding fixture (2) so that the extension lines of the first wire, the second wire, the third wire, and the fourth wire fed by wire feeder I, wire feeder II, wire feeder III, and wire feeder IV intersect directly below the welding torch (1) and directly above the substrate clamped by the workbench (7), enabling the first wire, the second wire, the third wire, and the fourth wire to be melted in the same molten pool. Then, finely adjust the angle of the wire feeding fixture (2) so that the distance between the intersection point of the first wire, the second wire, the third wire, and the fourth wire and the nozzle of the welding torch (1) is 10 mm. Step 3: Install a protective cover around the workbench (7) and fill it with argon. Step 4: Before depositing the material, start the computer built into the control cabinet (4), preset the process parameters, adjust and select the wire feeding speeds of the first wire, the second wire, the third wire, and the fourth wire according to the composition of the deposited material, and write the codes required for the three-axis numerical control machine tool. Step 5: Use argon for both the shielding gas and the ion gas. Open the gas valve of the argon cylinder (9), check the gas flow rate of the argon, and adjust the panel knob of the plasma welding power supply (8) so that the ion gas flow rate is 4 - 5 L / min and the shielding gas flow rate is 8 - 10 L / min to facilitate the starting of the pilot arc. Step 6: Move the welding torch (1) to the starting position by controlling the three-axis numerical control machine tool. Turn on the hot wire power supply I, hot wire power supply II, hot wire power supply III, and hot wire power supply IV, press the pilot arc switch of the three-axis numerical control machine tool to start the pilot arc. After the pilot arc is stable, start the program. The code includes the main arc start instruction and the wire feeder start instruction, and the wire feeder start instruction should be located after the main arc start instruction, so that after the main arc is started, wire feeder I, wire feeder II, wire feeder III, and wire feeder IV start to synchronously feed the wire and deposit the material according to the preset route. Step 7: When one layer of deposition is completed, send a command through the control cabinet (4) to extinguish the main arc, turn off wire feeder I, wire feeder II, wire feeder III, and wire feeder IV respectively, manually turn off the hot wire power supply I, hot wire power supply II, hot wire power supply III, and hot wire power supply IV, and wait for the cladding layer to cool for a certain period of time. Step 8: Repeat Step 6 and Step 7 until all layers of the deposited material are completed. Step 9: After the deposition of the material is completed, manually turn off the pilot arc, move the welding torch (1) to an appropriate position by controlling the three-axis numerical control machine tool, and initialize the system.