Titanium-nickel double-wire argon arc welding composite cladding device and method

Abstract

The invention discloses a titanium-nickel double-wire argon arc welding composite cladding device, and belongs to the technical field of metal cladding. The titanium-nickel double-wire argon arc welding composite cladding device comprises a welding machine, a welding gun and a working platform, and further comprises a wire feeding mechanism, an argon arc welding mechanism and a cladding mechanism, wherein the wire feeding mechanism is used for synchronously feeding two metal wires from the same side of the welding gun to a to-be-cladded area on a workpiece; the movement mechanism is used for driving the working platform to move in a horizontal plane; the temperature measuring part is used for detecting the temperature value of a to-be-cladded workpiece on the working platform in real time; and when the heat source of the welding gun heats the workpiece, the movement mechanism drives the workpiece to move, and when the real-time temperature value of the workpiece is larger than the preset temperature value, the welding gun is controlled to be closed, and the movement mechanism drives the workpiece to reset. According to the titanium-nickel double-wire argon arc welding composite cladding device, the problem that two metal wires are layered during solidification due to uneven temperature value distribution in the cladding process can be effectively solved, and the problems of workpiece deformation and cracking due to the fact that the difference of shrinkage deformation of cladding layers is too large are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of metal cladding, and particularly relates to a titanium-nickel twin-wire argon arc welding composite cladding device and method. Background Art

[0002] The manufacturing methods of metal parts include traditional casting, forging, and newly emerging additive manufacturing. For additive manufacturing methods, there are mainly methods such as directed energy deposition, selective laser melting, electron beam wire melting, and plasma arc additive manufacturing. These methods all have limitations to varying degrees. Selective laser melting and electron beam wire melting are difficult to be widely applied due to the high costs of raw materials and equipment, and the limitations of the sites where the equipment is used. Therefore, the argon arc welding wire melting forming technology has received great attention in recent years due to its mature and commercialized heat source equipment, low technical threshold, unrestricted manufacturing product size, high forming efficiency, etc., and has become a breakthrough for manufacturing low-cost and large-scale components.

[0003] Due to its high energy density due to its own arc advantages, argon arc welding can melt and manufacture various refractory metal materials, especially titanium alloys and nickel alloys. In the aerospace field, spacecraft mainly use the high specific strength, corrosion resistance, and low-temperature resistance of titanium alloys to manufacture various pressure vessels, fuel tanks, fasteners, instrument straps, frameworks, and rocket casings. Nickel-based alloys not only have wear resistance, but also have good oxidation resistance, corrosion resistance, and welding performance. They can be used to manufacture wear-resistant parts, or as cladding materials, and are clad on the surface of other substrate materials through surfacing and spraying processes.

[0004] However, in the field of metal material processing, when implementing the melting and cladding process for two or more metal wires, the conventional operation is to place different types of metal wires on both sides of the heat source to achieve uniform heating and full fusion. However, in the actual cladding process, due to factors such as the uneven distribution of the heat source and the difference in the wire feeding speed, the problem of uneven heating of each metal wire is likely to occur. This uneven heating will cause the metal wire to show a layering phenomenon during solidification, because the solidification rates and tissue morphologies of metal wires with different heating degrees are different, resulting in too large a difference in shrinkage deformation of the cladding layer. When welding or cladding, the great stress generated by the component due to the above reasons will cause the deformation or even cracking of the component. Summary of the Invention

[0005] The purpose of the present invention is to overcome the problems in the prior art, and provides a titanium-nickel twin-wire argon arc welding composite cladding device, which can effectively reduce the problem of layering of two metal wires during solidification caused by uneven temperature value distribution during the cladding process, thereby avoiding the problems of workpiece deformation and cracking caused by too large a difference in shrinkage deformation of the cladding layer.

[0006] The present invention provides a titanium-nickel twin-wire argon arc welding composite cladding device and method, including a welding machine, a welding torch, and a working platform. The working platform is arranged below the welding torch, and the workpiece to be clad is fixed on the working platform. It further includes:

[0007] A wire feeding mechanism for synchronously feeding two metal wire materials from the same side of the welding torch to the cladding area on the workpiece.

[0008] A motion mechanism, connected to the working platform, which is used to drive the working platform to reciprocate below the welding torch.

[0009] A temperature measuring part is arranged on one side of the working platform, and the temperature measuring part is used to detect the real-time temperature value of the workpiece in real time.

[0010] A control system is electrically connected to the wire feeding mechanism, the welding torch, the motion mechanism, and the temperature measuring part. A predetermined temperature value is set in the control system. Before the welding torch clads the workpiece, the control system controls the motion mechanism to drive the working platform to reciprocate below the welding torch, and uses the welding torch to scan and heat the workpiece until the real-time temperature values of all parts of the workpiece to be clad are equal to the preset temperature value. Then, the control system controls the welding torch to clad the two metal wire materials fed by the wire feeding mechanism.

[0011] Preferably, the wire feeding mechanism includes a wire feeding disc, a wire feeding driving mechanism, a wire feeding support, and a wire outlet nozzle. The wire feeding support is arranged on the working platform, and a wire outlet nozzle holder is arranged on the wire feeding support. The wire outlet nozzle is clamped on the wire outlet nozzle holder. Two metal wire materials are wound on the wire feeding disc, and the two metal wire materials enter the wire outlet nozzle through the wire feeding driving mechanism. The wire outlet nozzle is arranged at one end of the wire feeding support, and the wire feeding driving mechanism is used to synchronously drive the two metal wire materials to move towards the wire outlet nozzle.

[0012] Preferably, a transition wheel and a pressing wheel are arranged on the wire feeding support. The transition wheel and the pressing wheel are arranged between the wire feeding driving mechanism and the wire outlet nozzle. Both metal wire materials are in contact with the transition wheel and the pressing wheel. The transition wheel is used to guide the two metal wire materials, and the pressing wheel is used to tighten the two metal wire materials.

[0013] Preferably, a support structure is further arranged between the welding torch and the working platform. The support structure includes a support rod and two movable rods. The support rod and the two movable rods form a Y-shaped structure. The bottom end of the support rod is fixed to the working platform. The two movable rods are both hinged to the top end of the support rod, and the lengths of the two movable rods can be adjusted. A tool holder is arranged on each movable rod. One tool holder is used to clamp the welding torch, and the other tool holder is used to clamp the temperature measuring part.

[0014] Preferably, the movable rod includes a sleeve and two threaded rods. One threaded rod is hinged to the top end of the support rod, and the other threaded rod is connected to the tool holder. The two threaded rods are respectively inserted into the inner hole of the sleeve from both ends of the sleeve. An adjusting nut is provided at each end of the sleeve, and the adjusting nut is threadedly connected to the threaded rod. When the adjusting nut is rotated, the depth of the threaded rod inserted into the inner hole of the sleeve can be adjusted.

[0015] Preferably, the protective gas system includes an argon gas cylinder, a gas valve, a gas delivery pipe, and a gas detector. The argon gas cylinder is communicated with the gas delivery pipe through the gas valve. A transparent quartz plate is provided around the working platform, and the transparent quartz plate is used to form a protective cover around the working platform. The gas delivery pipe is used to deliver argon gas into the protective cover, and the gas detector is used to detect the oxygen content in the protective cover.

[0016] Preferably, the temperature measuring part is a non-contact multi-point thermometer, and the temperature measuring part is used to measure the real-time temperature value data at multiple positions on the workpiece.

[0017] Preferably, the wire outlet nozzle has a double-aperture structure. The wire outlet nozzle is provided on one side of the welding torch, and the wire feeding mechanism simultaneously feeds two metal wire materials through the wire outlet nozzle.

[0018] Preferably, the welding torch is vertical or straight-handled, and the welding torch is used to emit an arc of molten metal wire material.

[0019] The present invention also provides a method for cladding using a titanium-nickel twin-wire argon arc welding composite cladding device, including the following steps:

[0020] Using the temperature measuring part to detect the workpiece temperature value in real time, the temperature measuring part inputs the detected real-time temperature value signal into the control system, and the control system displays the real-time temperature value of the workpiece;

[0021] Controlling the motion mechanism to drive the working platform to reciprocate under the welding torch, so as to scan and heat the area to be clad of the workpiece by using the welding torch;

[0022] The temperature measuring part detects the real-time temperature value of the heated area of the workpiece, the temperature measuring part inputs the detected real-time temperature value signal into the control system, and the control system displays the real-time temperature value of the heated area of the workpiece;

[0023] When the temperature measuring component detects that the real-time temperature values of the heated area of the workpiece all reach the preset temperature value, control the welding torch to stop working, and control the motion mechanism to drive the working platform to reset;

[0024] The control system controls the actions of the welding machine and the wire feeding mechanism. The wire feeding mechanism synchronously feeds two metal wire materials from the same side of the welding torch, so as to clad the heated area of the workpiece by using the welding torch, and control the motion mechanism to move the working platform at a set speed;

[0025] After the workpiece cladding work is completed, control the welding torch to stop working and control the protective gas system to stop inflating.

[0026] Compared with the prior art, the beneficial effects of the present invention are as follows: A titanium-nickel twin-wire argon arc welding composite cladding device and method of the present invention detect the real-time temperature values of various parts of the area to be clad on the workpiece through a temperature measuring part. When the real-time temperature value is lower than the predetermined temperature value, the control system controls the welding machine to start and controls the moving mechanism to drive the working platform to reciprocate under the welding torch, so as to scan and heat the area to be clad on the workpiece by using the welding torch. When the real-time temperature of the area to be clad on the workpiece reaches the predetermined temperature value, control the wire feeding mechanism to feed wire. The wire outlet nozzle of the wire feeding mechanism has a double aperture. The wire feeding mechanism synchronously sends out two metal wire materials from the same side of the welding torch, and the two metal wire materials sent out reach the area to be clad on the workpiece at the same time, so that the ambient temperature of the two metal wire materials is uniform. Then, use the control system to control the welding machine to provide current and voltage for the welding torch and control the speed and moving distance of the moving mechanism. At the same time, use the temperature measuring part to real-time feedback the real-time temperature value of the workpiece cladding area, and change the temperature of the welding torch through the control system to complete the layer-by-layer temperature control printing process, so as to reduce the stress generated by the temperature gradient during the welding or cladding process of the workpiece, and effectively reduce the problem of stratification of the two metal wire materials during solidification caused by uneven distribution of temperature values during the cladding process, thereby avoiding the problems of workpiece deformation and cracking caused by excessive shrinkage deformation differences of the cladding layer.

[0027] The protective gas system can be used to real-time monitor the oxygen content in the working platform to ensure that the workpiece is not oxidized during work. Description of the Drawings

[0028] Figure 1 It is a schematic structural diagram of the present invention;

[0029] Figure 2 It is a schematic structural diagram of the wire feeding mechanism of the present invention.

[0030] Figure 3 It is a schematic structural diagram of the support structure of the present invention.

[0031] Description of the Reference Numerals:

[0032] 1. Workpiece, 101. Wire feeding mechanism, 102. Welding machine, 103. Wire outlet nozzle, 104. Welding torch, 105. Shielding gas system, 106. Motion mechanism, 107. Working platform, 108. Temperature measuring part, 109. Control system, 110. Support structure, 201. Wire feeding reel, 202. Wire feeding drive mechanism, 203. Idler pulley, 204. Wire feeding support, 205. Pressing wheel, 206. Wire outlet nozzle holder, 301. Support rod, 302. Threaded rod, 303. Inner bearing sleeve, 304. Spherical plain bearing, 305. Adjusting nut, 306. Sleeve, 307. Movable rod, 308. Tool holder. Detailed implementation manners

[0033] The following combines the attached Figures 1 - 3 , and describes in detail the specific implementation manners of the present invention. It should be understood that the protection scope of the present invention is not limited by the specific implementation manners. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0034] As Figures 1 - 2 shown, a titanium-nickel twin-wire argon arc welding composite cladding device provided by the present invention includes a welding machine 102, a welding torch 104, a wire feeding mechanism 101 and a working platform 107. The working platform 107 is arranged below the welding torch 104, and the workpiece 1 to be clad is fixed on the working platform 107. It further includes: a wire feeding mechanism 101, a motion mechanism 106, a temperature measuring part 108 and a control system 109. The wire feeding mechanism 101 is used to synchronously send out two metal wire materials from the same side of the welding torch 104 to the area to be clad on the workpiece 1; the motion mechanism 106 is connected to the working platform 107, and the motion mechanism 106 is used to drive the working platform 107 to reciprocate below the welding torch 104; the temperature measuring part 108 is arranged on one side of the working platform 107, and the temperature measuring part 108 is used to detect the real-time temperature value of the workpiece 1 in real time; the control system 109 is electrically connected to the wire feeding mechanism 101, the welding torch 104, the motion mechanism 106 and the temperature measuring part 108. A preset temperature value is set in the control system 109. Before the welding torch 104 clads the workpiece 1, the control system 109 controls the motion mechanism 106 to drive the working platform 107 to reciprocate below the welding torch 104, and uses the welding torch 104 to scan and heat the workpiece 1 until the real-time temperature values of all parts of the area to be clad on the workpiece 1 are equal to the preset temperature value, and then the control system 109 controls the welding torch 104 to clad the two metal wire materials sent out by the wire feeding mechanism 101.

[0035] Now briefly describe the working principle of the above embodiment:

[0036] The welding machine 102 is a TIG welding machine 102. The welding torch 104 combined with the TIG welding machine 102 can not only serve as a heat source for the molten metal wire, but also achieve arc heating of the workpiece 1. Before cladding, first turn on the protective gas system 105, and monitor the oxygen content in the working platform 107 through a gas detector. When it reaches the set value, start working. The workpiece 1 can be clad at room temperature or at a preset temperature value. The real-time temperature values of each part of the area to be clad on the workpiece 1 are detected by the temperature measuring part 108, and the real-time temperature values of the workpiece 1 detected by the temperature measuring part 108 are converted into electrical signals and fed back to the control system 109 in real time. The control system 109 compares the preset temperature value with the real-time temperature value. When the real-time temperature value is lower than the preset temperature value, the control system 109 controls the welding machine 102 to start, and controls the motion mechanism 106 to drive the working platform 107 to reciprocate under the welding torch 104, so as to scan and heat the area to be clad on the workpiece 1 by using the welding torch 104. When the temperature of the area to be clad on the workpiece 1 reaches the preset temperature value, control the wire feeding mechanism 101 to feed wire. The wire outlet nozzle 103 of the wire feeding mechanism 101 has double apertures. The wire feeding mechanism 101 synchronously feeds two metal wire materials from the same side of the welding torch 104, and the two metal wire materials sent out reach the area to be clad on the workpiece 1 at the same time, so that the ambient temperature of the two metal wire materials is uniform. The wire outlet nozzle 103 of the wire feeding mechanism 101 is located on one side of the welding torch 104 and forms a certain angle with the welding torch 104, and the metal wire can reach the lower end of the heat source during normal operation. The protective gas system 105 can be used to monitor the oxygen content in the working platform 107 in real time to ensure that the workpiece 1 is not oxidized during work. The control system 109 controls the welding machine 102 to provide current and voltage for the welding of the welding torch 104 and controls the speed and movement distance of the motion mechanism 106. At the same time, the temperature measuring part 108 is used to feedback the temperature of the workpiece 1 in real time, and the temperature of the welding torch 104 is changed through the control system 109 to complete the layer-by-layer temperature control printing process, which can reduce the stress generated by the temperature gradient during the welding or cladding process of the workpiece 1, and can effectively reduce the problem of delamination of the two metal wire materials during solidification caused by uneven distribution of temperature values during the cladding process, thereby avoiding the problems of deformation and cracking of the workpiece 1 caused by too large differences in shrinkage deformation of the cladding layer.

[0037] Step 1. Input the set welding current of 60 A, heating current of 30 A, wire feeding speed of titanium alloy of 60 mm / min, wire feeding speed of nickel alloy of 75 mm / min, movement speed of the working platform 107 of 0.35 mm / s, moving distance of the working platform 107 of 150 mm, heating speed of the working platform 107 of 5 mm / s, flow rate of the protective gas of 20 L / min, and temperature adjustment target value of the workpiece 1 of 100 degrees Celsius into the control system 109.

[0038] Step 2. Open the gas valve of the protective gas system 105 and detect the oxygen content in the working platform 107. Start measuring the temperature when the oxygen content in the working platform 107 decreases significantly.

[0039] Step 3. Turn on the temperature measurement unit 108 and measure the temperatures at various points in the substrate area of the workpiece 1.

[0040] Step 4. When starting the cladding, if the feedback value of the temperature control signal is lower than 100 °C, the control system 109 only turns on the heating device (i.e., the welding machine 102), starts the servo motor of the motion mechanism 106, and the welding machine 102 emits an arc through the welding torch 104 to heat the heating area of the workpiece 1 with a heating current of 30 A. At the same time, use the motion mechanism 106 to drive the working platform 107 to reciprocate at a speed of 5 mm / s.

[0041] Step 5. When the temperature of the workpiece 1 is higher than 100 °C, the control system 109 turns on the arc device of the molten metal wire (i.e., the welding machine 102), the motion mechanism 106, and the wire feeding system. The working platform 107 moves at a speed of 0.35 mm / s, the welding current of the welding torch 104 is 60 A, the wire feeding speed of the titanium alloy is 60 mm / min, and the wire feeding speed of the nickel alloy is 75 mm / min to start cladding. When the cladding distance is completed, the wire feeding mechanism 101 is closed, the arc goes out, the working platform 107 stops moving, and the protective gas is closed after a 10 s delay.

[0042] The titanium-nickel twin-wire argon arc welding composite cladding device of the present invention has a very low cost, high steady-state control accuracy of the temperature field, and dynamic response characteristics, can effectively reduce the problem of stratification of the two metal wires during solidification caused by uneven temperature value distribution during the cladding process, thereby avoiding the problems of deformation and cracking of the workpiece 1 caused by excessive shrinkage deformation differences of the cladding layer. And using titanium alloy and nickel alloy metal wires as raw materials enables the heat source to continuously form a molten pool by melting the metal wire, and the molten pool solidifies to form a cladding surface. Repeating this process can also perform additive manufacturing.

[0043] On the basis of the above embodiments, in order to further prevent the problem of stratification of the two metal wires during solidification caused by uneven temperature value distribution of the cladding layer.

[0044] Such as Figure 1 and Figure 2As shown in the figure, the wire feeding mechanism 101 includes a wire feeding reel 201, a wire feeding driving mechanism 202, a wire feeding support 204, and a wire outlet nozzle 103. The wire feeding support 204 is arranged on the working platform 107. An outlet nozzle holder 206 is provided on the wire feeding support 204. The wire outlet nozzle 103 is clamped on the outlet nozzle holder 206. Two metal wire materials are wound on the wire feeding reel 201. The two metal wire materials enter the wire outlet nozzle 103 through the wire feeding driving mechanism 202. The wire outlet nozzle 103 is arranged at one end of the wire feeding support 204. The wire feeding driving mechanism 202 is used to synchronously drive the two metal wire materials to move towards the wire outlet nozzle 103.

[0045] The wire feeding support 204 is a movable support. One end of the wire feeding support 204 is fixed to one side of the working platform 107. The wire outlet nozzle 103 is clamped inside the outlet nozzle holder 206. When performing high-temperature cladding on the workpiece 1, the wire feeding driving mechanism 202 is used to simultaneously drive the two metal wire materials to be released from the wire feeding reel 201. After being conveyed by the wire feeding driving mechanism 202, the two metal wire materials enter the wire outlet nozzle 103. The position of the wire outlet nozzle 103 is controlled by the wire feeding support 204 to align the wire outlet nozzle 103 with the surface of the workpiece 1. At the same time, after the two metal wire materials discharged from the wire outlet nozzle 103 are subjected to high-temperature cladding, since the ambient temperatures of the two metal wire materials are the same and the wire feeding is synchronous, it is possible to further prevent the problem of delamination of the two metal wire materials during solidification due to uneven temperature value distribution in the cladding layer.

[0046] As a preferred solution, as Figure 1 and Figure 2 shown in the figure, a transition wheel 203 and a pressing wheel 205 are provided on the wire feeding support 204. The transition wheel 203 and the pressing wheel 205 are arranged between the wire feeding driving mechanism 202 and the wire outlet nozzle 103. Both metal wire materials are in contact with the transition wheel 203 and the pressing wheel 205. The transition wheel 203 is used to guide the two metal wire materials, and the pressing wheel 205 is used to tighten the two metal wire materials. By providing the pressing wheel 205 and the transition wheel 203, during the wire feeding process of the two metal wire materials, the transition wheel 203 guides the two metal wire materials, and then the pressing wheel 205 is used to tension the two metal wire materials, which can ensure the synchronization of the wire feeding of the two metal wire materials during wire feeding and further prevent delamination of the two metal wire materials after cladding.

[0047] As a preferred solution, as Figure 1 and Figure 3As shown in the figure, a support structure 110 is further provided between the welding torch 104 and the working platform 107. The support structure 110 includes a support rod 301 and two movable rods 307. The support rod 301 and the two movable rods 307 form a Y-shaped structure. The bottom end of the support rod 301 is fixed to the working platform 107. The two movable rods 307 are both hinged to the top end of the support rod 301. The lengths of the two movable rods 307 can be adjusted. A tool holder 308 is provided on each movable rod 307. One tool holder 308 is used to clamp the welding torch 104, and the other tool holder 308 is used to clamp the temperature measuring part 108. Clamping and supporting the welding torch 104 and the temperature measuring part 108 by using the support structure 110 can ensure the stability of the welding torch 104 and the temperature measuring part 108 during operation. Each movable rod 307 is hinged to the support rod 301 through an inner bearing sleeve 303 and a spherical plain bearing 304. The inner bearing sleeve 303 is installed in the spherical plain bearing 304. As needed, the included angle and length of the two movable rods 307 can be rotated, so as to adjust the position and posture of the temperature measuring part 108 and the welding torch 104 to adapt to the cladding work on the surface of the workpiece 1.

[0048] As a preferred solution, as Figure 3 shown in the figure, the movable rod 307 includes a sleeve 306 and two threaded rods 302. One threaded rod 302 is hinged to the top end of the support rod 301, and the other threaded rod 302 is connected to the tool holder 308. The two threaded rods 302 are respectively inserted into the inner hole of the sleeve 306 from both ends of the sleeve 306. An adjusting nut 305 is provided at each end of the sleeve 306. The adjusting nut 305 is threadedly connected to the threaded rod 302. When the adjusting nut 305 is rotated, the depth of the threaded rod 302 inserted into the inner hole of the sleeve 306 can be adjusted. When it is necessary to adjust the position of the temperature measuring part 108 or the welding torch 104, by rotating the adjusting nuts 305 at both ends of the sleeve 306, the depth of the two threaded rods 302 inserted into the inner hole of the sleeve 306 is adjusted, so as to adjust the length of the entire movable rod 307, and thus the position of the temperature measuring part 108 or the welding torch 104 can be adjusted.

[0049] As a preferred solution, as Figure 1As shown, the protective gas system 105 includes an argon gas cylinder, a gas valve, a gas pipeline, and a gas detector. The argon gas cylinder is connected to the gas pipeline through the gas valve. A transparent quartz plate is provided around the working platform 107, and the transparent quartz plate is used to form a protective cover around the working platform 107. The gas pipeline is used to transport argon gas into the protective cover, and the gas detector is used to detect the oxygen content in the protective cover. When it is necessary to fill the working platform 107 with protective gas, the gas valve is opened, and the protective gas - argon gas in the argon gas cylinder is filled into the protective cover where the working platform 107 is located. At the same time, the oxygen content in the protective cover is detected in real time through the gas detector. As the protective cover is continuously filled with gas, the oxygen content in the protective cover continuously decreases, thereby forming an oxygen-free environment in the protective cover to prevent the workpiece 1 from oxidizing during heating or cladding, and further preventing the problem of delamination when the two metal wire materials solidify.

[0050] As a preferred solution, as Figure 1 shown, the temperature measurement part 108 is a non-contact multi-point temperature measurement instrument, and the temperature measurement part 108 is used to measure the real-time temperature value data at multiple positions on the workpiece 1. The non-contact measurement of multiple points on the workpiece 1 is carried out by using the temperature measurement part 108, and the average value of the real-time temperature values at multiple points is taken, which can reflect the overall real-time temperature value of the heating area of the workpiece 1, thereby improving the accuracy of the temperature measurement part 108 in detecting the real-time temperature value of the workpiece 1, and further preventing the problem of delamination when the two metal wire materials solidify.

[0051] As a preferred solution, as Figure 1 shown, the wire outlet nozzle 103 has a double-aperture structure, and the wire outlet nozzle 103 is arranged on one side of the welding torch 104. The wire feeding mechanism 101 simultaneously sends out two metal wire materials through the wire outlet nozzle 103. The wire feeding mechanism 101 synchronously transports the two metal wire materials to one side of the welding torch 104 through the double-aperture wire outlet nozzle 103, so as to ensure the synchronous melting of the two metal wire materials and further prevent the delamination phenomenon of the two metal wire materials after cladding.

[0052] As a preferred solution, as Figure 1 shown, the temperature measurement part 108 is a thermocouple temperature measurement instrument or an infrared temperature measurement instrument. By using a thermocouple temperature measurement instrument or an infrared temperature measurement instrument, non-contact and accurate temperature measurement of the workpiece 1 can be carried out, ensuring the accuracy of the temperature measurement part 108 in detecting the real-time temperature value of the workpiece 1.

[0053] As a preferred solution, as Figure 1 shown, the motion mechanism 106 adopts a servo motor moving platform. The motion mechanism 106 adopts a servo motor moving platform, and the servo motor moving platform is used to drive the working platform 107 to move, so that the position of the working platform 107 during movement is more accurate and the motion response is more sensitive.

[0054] As a preferred solution, as Figure 1 shown, wherein the welding torch 104 is a vertical type or a straight handle type, and the welding torch 104 is used to emit an arc for melting a metal wire.

[0055] The present invention also discloses a method for cladding by using a titanium-nickel twin-wire argon arc welding composite cladding device, including the following steps:

[0056] Control the motion mechanism 106 to drive the working platform 107 to reciprocate under the welding torch 104, so as to scan and heat the area to be clad of the workpiece 1 by using the welding torch 104;

[0057] The temperature measuring part 108 detects the real-time temperature value of the heated area of the workpiece 1, and the temperature measuring part 108 inputs the detected real-time temperature value signal into the control system 109, and the control system 109 displays the real-time temperature value of the heated area of the workpiece 1;

[0058] When the real-time temperature values detected by the temperature measuring part 108 of the heated area of the workpiece 1 all reach the preset temperature value, control the welding torch 104 to stop working, and control the motion mechanism 106 to drive the working platform 107 to reset;

[0059] The control system 109 controls the welding machine 102 and the wire feeding mechanism 101 to act, and the wire feeding mechanism 101 synchronously feeds two metal wires from the same side of the welding torch 104, so as to clad the heated area of the workpiece 1 by using the welding torch 104, and control the motion mechanism 106 to move the working platform 107 at a set speed;

[0060] When the cladding work of the workpiece 1 is completed, control the welding torch 104 to stop working, and control the protective gas system 105 to stop inflating.

[0061] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention.

Claims

1. A titanium-nickel twin-wire argon arc welding composite cladding device, comprising a welding machine (102), a welding torch (104) and a working platform (107). The working platform (107) is arranged below the welding torch (104), and a workpiece (1) to be clad is fixed on the working platform (107). It is characterized in that, Further included are: A wire feeding mechanism (101) for synchronously feeding two metal wire materials from the same side of a welding torch (104) to a cladding area to be formed on a workpiece (1); A motion mechanism (106) connected to the working platform (107), the motion mechanism (106) being configured to drive the working platform (107) to reciprocate below the welding torch (104); A temperature measuring unit (108) disposed on one side of the working platform (107), the temperature measuring unit (108) being configured to detect the real-time temperature value of the workpiece (1) in real time; A control system (109) electrically connected to the wire feeding mechanism (101), the welding torch (104), the motion mechanism (106) and the temperature measuring unit (108). A preset temperature value is set in the control system (109). Before the welding torch (104) clads the workpiece (1), the control system (109) controls the motion mechanism (106) to drive the working platform (107) to reciprocate below the welding torch (104), so as to scan and heat the workpiece (1) by using the welding torch (104). Until the real-time temperature values at all parts of the cladding area to be formed on the workpiece (1) are equal to the preset temperature value, the control system (109) controls the welding torch (104) to clad the two metal wire materials fed by the wire feeding mechanism (101).

2. The titanium-nickel twin-wire GTAW composite cladding device according to claim 1, characterized in that, The wire feeding mechanism (101) includes a wire feeding reel (201), a wire feeding driving mechanism (202), a wire feeding support (204) and a wire outlet nozzle (103). The wire feeding support (204) is disposed on the working platform (107). A wire outlet nozzle holder (206) is provided on the wire feeding support (204). The wire outlet nozzle (103) is clamped on the wire outlet nozzle holder (206). Two metal wire materials are wound on the wire feeding reel (201). The two metal wire materials enter the wire outlet nozzle (103) through the wire feeding driving mechanism (202). The wire outlet nozzle (103) is disposed at one end of the wire feeding support (204). The wire feeding driving mechanism (202) is configured to synchronously drive the two metal wire materials to move towards the wire outlet nozzle (103).

3. The titanium-nickel twin-wire GTAW composite cladding device according to claim 2, wherein A transition wheel (203) and a pressing wheel (205) are provided on the wire feeding support (204). The transition wheel (203) and the pressing wheel (205) are disposed between the wire feeding driving mechanism (202) and the wire outlet nozzle (103). Both of the two metal wire materials are in contact with the transition wheel (203) and the pressing wheel (205). The transition wheel (203) is configured to guide the two metal wire materials, and the pressing wheel (205) is configured to tension the two metal wire materials.

4. The titanium-nickel twin-wire GTAW composite cladding device according to claim 1, wherein A support structure (110) is further provided between the welding torch (104) and the working platform (107). The support structure (110) includes a support rod (301) and two movable rods (307). The support rod (301) and the two movable rods (307) form a Y-shaped structure. The bottom end of the support rod (301) is fixed to the working platform (107). The two movable rods (307) are both hinged to the top end of the support rod (301). The lengths of the two movable rods (307) can be adjusted. A tool holder (308) is provided on each movable rod (307). One tool holder (308) is used to clamp the welding torch (104), and the other tool holder (308) is used to clamp the temperature measuring part (108).

5. The titanium-nickel twin-wire GTAW composite cladding device according to claim 4, characterized in that, The movable rod (307) includes a sleeve (306) and two threaded rods (302). One threaded rod (302) is hinged to the top end of the support rod (301), and the other threaded rod (302) is connected to the tool holder (308). The two threaded rods (302) are respectively inserted into the inner hole of the sleeve (306) from both ends of the sleeve (306). An adjusting nut (305) is provided at each end of the sleeve (306). The adjusting nut (305) is threadedly connected to the threaded rod (302). When the adjusting nut (305) is rotated, the depth of the threaded rod (302) inserted into the inner hole of the sleeve (306) can be adjusted.

6. The titanium-nickel double-wire TIG composite cladding device according to claim 1, characterized in that, The shielding gas system (105) includes an argon gas cylinder, a gas valve, a gas pipeline and a gas detector. The argon gas cylinder is communicated with the gas pipeline through the gas valve. A transparent quartz plate is provided around the working platform (107). The transparent quartz plate is used to form a protective cover around the working platform (107). The gas pipeline is used to convey argon gas into the protective cover. The gas detector is used to detect the oxygen content in the protective cover.

7. The titanium-nickel twin-wire TIG composite cladding device according to claim 1, wherein, The temperature measuring part (108) is a non-contact multi-point thermometer, and the temperature measuring part (108) is used to measure the real-time temperature value data at multiple points on the workpiece (1).

8. The titanium-nickel twin-wire GTAW composite cladding device according to claim 1, characterized in that, The wire outlet nozzle (103) has a double-aperture structure. The wire outlet nozzle (103) is provided on one side of the welding torch (104). The wire feeding mechanism (101) simultaneously feeds two metal wire materials through the wire outlet nozzle (103).

9. The titanium-nickel twin-wire TIG composite cladding device according to claim 1, characterized in that, The welding torch (104) is vertical or straight-handled, and the welding torch (104) is used to emit an arc of molten metal wire material.

10. A method of cladding using the titanium-nickel twin-wire TIG composite cladding device as described in claim 1, characterized in that, Including the following steps: Controlling the motion mechanism (106) to drive the working platform (107) to reciprocate under the welding torch (104), so as to scan and heat the area to be cladded of the workpiece (1) by using the welding torch (104); The temperature measuring part (108) detects the real-time temperature value of the heating area of the workpiece (1). The temperature measuring part (108) inputs the detected real-time temperature value signal into the control system (109), and the control system (109) displays the real-time temperature value of the heating area of the workpiece (1); When the real-time temperature values detected by the temperature measuring part (108) of the workpiece (1) in the heating area all reach the preset temperature value, controlling the welding torch (104) to stop working, and controlling the motion mechanism (106) to drive the working platform (107) to reset; The control system (109) controls the operations of the welding machine (102) and the wire feeding mechanism (101). The wire feeding mechanism (101) synchronously feeds two metal wire materials from the same side of the welding torch (104), so as to perform cladding on the heating area of the workpiece (1) by using the welding torch (104), and controls the motion mechanism (106) to move the working platform (107) at a set speed; After the cladding work of the workpiece (1) is completed, the control system controls the welding torch (104) to stop working and controls the shielding gas system (105) to stop inflating.

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