Ultrafast laser surface modified aluminum alloy welding wire drawing device and method

Abstract

The present invention discloses an ultrafast laser surface modified aluminum alloy welding wire drawing device and method, comprising a stand, a first support system, a wire winding system, a welding wire, a welding wire straightening system, a first driving machine, an ultrafast laser surface modification system, a second driving machine, a slot roller system, a second supporting system, a third driving machine, and a fourth driving machine. By adopting ultrafast laser surface modification technology, the surface quality of the aluminum alloy welding wire is significantly improved. The high-speed scanning of ultrafast laser pulses enables the rapid deposition of micro-nano elements on the surface of the welding wire, thereby optimizing the microstructure and performance of the welding wire surface. This modification treatment effectively solves the problems of rough surface and severe oxidation in traditional preparation processes, reduces quality problems such as pores and slag inclusions that occur during welding, improves the overall welding effect and efficiency, and brings key technical breakthroughs and innovations to the preparation and welding fields of aluminum alloy welding wire.

Description

Technical Field

[0001] The invention belongs to the technical field of aluminum alloy welding wire preparation, and specifically relates to an ultrafast laser surface modified aluminum alloy welding wire drawing device and method. Background Art

[0002] In recent years, with the rapid development of industries such as aerospace and automobile manufacturing, the demand for aluminum alloy welding materials has increased, but its laser welding performance is poor, and there are problems such as uneven structure, grain boundary segregation and crack propagation. How to reduce porosity, eliminate grain boundary segregation and inhibit columnar crystal growth is still a challenge in the field of aluminum alloy laser welding. In the laser welding process, aluminum alloy welding wire is a key material, and its surface quality directly affects the performance of the welded joint. By introducing trace elements or ceramic particles, the crystallization process during the solidification of the welding pool can be improved, thereby improving the strength and toughness of the welded joint. However, due to the lack of compatibility between aluminum and ceramic particles, the difficulty in preparing ceramic particle-reinforced aluminum alloy welding wire limits the application of this method and easily leads to welding quality problems such as pores and slag inclusions, thereby affecting the overall welding quality and efficiency.

[0003] To solve these challenges, ultrafast laser surface modification technology has shown its potential. This emerging surface treatment technology has attracted attention for its advantages such as high efficiency, environmental protection, and high precision. Through high-speed scanning of ultrafast laser pulses, the microstructure and properties of the aluminum alloy surface can be precisely controlled, thereby significantly improving its welding characteristics. However, there is currently a lack of an ultrafast laser surface modification drawing device specifically for aluminum alloy welding wires on the market.

[0004] To this end, we propose an ultrafast laser surface modified aluminum alloy welding wire drawing device and method to solve the above problems. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide an ultrafast laser surface modified aluminum alloy welding wire drawing device and method.

[0006] The objective of the present invention is achieved through the following technical solutions:

[0007] An ultrafast laser surface modified aluminum alloy welding wire drawing device comprises a stand, a first support system, a wire winding system, a welding wire, a welding wire straightening system, a first driving machine, an ultrafast laser surface modification system, a second driving machine, a slot roller system, a second support system, a third driving machine and a fourth driving machine;

[0008] The first support system and the second support system are distributed on both sides of the platform, the wire winding system is installed on the first support system, and the slot roller system is installed on the second support system to ensure the relative position stability of each component and improve the stability and reliability of the overall device. The welding wire straightening system, the first driving machine, the ultrafast laser surface modification system, the second driving machine, the third driving machine and the fourth driving machine are installed on the platform. The welding wire enters the welding wire straightening system for straightening, and then under the action of the first driving machine, the straightened welding wire enters the ultrafast laser surface modification system. The welding wire derived from the ultrafast laser surface modification system is driven to the slot roller system by the second driving machine. The second driving machine ensures that the welding wire maintains stable movement during the modification treatment to avoid uneven surface modification. The slot roller system is provided with a groove to ensure that the welding wire is continuously transported along a preset path. After the welding wire is redirected by the slot roller system, the path of the welding wire is changed so that the welding wire surface with deposited particles is located on the lower side to avoid offset or jumping, and then it is driven to the wire winding system by the third driving machine and the fourth driving machine in turn.

[0009] Furthermore, the welding wire straightening system consists of a box body and longitudinal straightening wheels inside the box body. The longitudinal straightening wheels are arranged in two adjacent groups, with a number of wheels in each group, which are used to perform preliminary straightening on the aluminum alloy welding wire to ensure that the welding wire remains in a straight state before entering the ultrafast laser surface modification system.

[0010] Furthermore, the ultrafast laser surface modification system includes a containing box and a laser film clamping module and a rotating clamping module in the containing box. The rotating clamping module is installed at the top of the nanobox, and the film clamping module is installed at the bottom of the rotating clamping module. The laser generates ultrafast pulse laser, and the surface of the film carrier at the bottom of the film clamping module is scanned at high speed through a focusing lens to achieve rapid deposition of trace elements on the surface of the welding wire; the film clamping module is suitable for clamping a film carrier containing trace elements or ceramic particles, and the trace elements or ceramic particles are released under the action of the laser to form a uniform modified layer on the surface of the aluminum alloy welding wire.

[0011] Furthermore, temperature-vision control modules are provided on all four sides of the containing box of the ultrafast laser surface modification system for real-time monitoring and adjusting the surface temperature of the welding wire during the modification process; the temperature-vision control module determines the surface temperature and particle uniformity of the welding wire based on the collected temperature data and visual data, accurately feeds back to the control system and adjusts the power and scanning speed of the laser to ensure the uniformity and consistency of the welding wire surface modification process.

[0012] Furthermore, the ultrafast laser surface modification system also includes an intelligent control system, which accurately adjusts the driving speeds of the first driver, the second driver, the third driver and the fourth driver according to preset process parameters and real-time feedback data to ensure the stable operation of the welding wire during the straightening, modification and collection process; the intelligent control system can adjust the power, scanning speed and film rotation speed of the laser in the ultrafast laser surface modification system in real time.

[0013] Furthermore, the thin film carrier comprises alloy elements, rare earth elements and ceramic materials.

[0014] The trace alloying element is one of Mg, Li, Zr, Ti, and Sc;

[0015] The rare earth element is one of Ce, La, and Y;

[0016] Ceramic materials are TiC, TiN, Al 2 O 3 , one of S iC.

[0017] Furthermore, the film carrier is a single-layer structure or a multi-layer structure, and the multi-layer structure is a film layer with different components and functions deposited in sequence on the surface of the welding wire to form a modified layer with multiple levels and functions.

[0018] Furthermore, the ultrafast laser surface modification system adopts a closed structure.

[0019] Another object of the present invention is to provide a drawing method of an ultrafast laser surface modified aluminum alloy welding wire drawing device, comprising the following steps:

[0020] S1, the aluminum alloy welding wire to be modified is initially processed by the welding wire straightening system to ensure that the welding wire remains in a straight state before entering the ultrafast laser surface modification system, effectively avoiding the modification effect affected by the bending or twisting of the welding wire; the first driving machine drives the welding wire to be continuously transported along a preset path through the power transmission system;

[0021] S2, the welding wire enters the ultrafast laser surface modification system, and the intelligent control system starts the laser according to the preset process parameters; the laser outputs an ultrafast pulse laser beam and scans the surface of the film carrier at high speed through a focusing lens; during the scanning process, the temperature-vision control module monitors the surface temperature of the welding wire in real time, and adjusts the power and scanning speed of the laser according to the real-time data to ensure the precise control of the surface modification process of the welding wire; the rotary clamping module accurately controls the rotation speed and direction of the film to ensure that trace elements or ceramic particles can be evenly deposited on the surface of the welding wire;

[0022] S3, the welding wire after the ultrafast laser surface modification is driven by the second driving machine to continue to move along the preset path and finally enter the wire winding system; the wire winding system collects the welding wire after the surface modification and winds it into a disk for subsequent use and storage;

[0023] S4, the intelligent control system accurately adjusts the driving speed of the first driving machine and the second driving machine to ensure the stable operation state of the welding wire during the straightening, modification and collection process; the intelligent control system monitors the operation state of the ultrafast laser surface modification system in real time, and adjusts the power, scanning speed and film rotation speed of the laser in the ultrafast laser surface modification system in real time to ensure the uniformity and consistency of the welding wire surface modification process.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] The present invention significantly improves the surface film quality of aluminum alloy welding wire by adopting ultrafast laser surface modification technology. The high-speed scanning of ultrafast laser pulses enables the rapid deposition of micro-nano elements on the surface film of the welding wire, thereby optimizing the microstructure and performance of the surface of the welding wire film. This modification treatment effectively solves the problems of surface roughness and severe oxidation in traditional preparation processes, reduces quality problems such as pores and slag inclusions that occur during welding, and improves the overall welding effect and efficiency. At the same time, the equipment has the advantages of stable operation, safety and reliability, meeting the needs of modern welding production, and bringing key technological breakthroughs and innovations to the preparation and welding of aluminum alloy welding wires, effectively solving the problems of poor surface quality and many welding defects in the traditional aluminum alloy welding wire preparation process. The device adopts ultrafast laser surface modification technology, and uses a laser beam to scan the surface of the welding wire at high speed to achieve rapid deposition of micro-nano elements on the surface of the welding wire, thereby improving the surface quality of the welding wire, and the aluminum alloy welding wire to be modified is initially straightened by the welding wire straightening system; then, the welding wire enters the ultrafast laser surface modification system, and uses a laser beam to scan the surface of the welding wire at high speed to achieve modification of the welding wire surface; during the modification process, the temperature of the welding wire is monitored and controlled in real time by the temperature-vision control module; the modified welding wire continues to move through the drive of the second drive motor, and is finally collected into a disc by the wire winding system. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 It is a schematic diagram of the operation flow of the present invention.

[0028] In the figure: 1. first support system; 2. wire winding system; 3. welding wire; 4. longitudinal straightening wheel; 5. welding wire straightening system; 6. first driving machine; 8. second driving machine; 9. slot roller system; 10. second support system; 11. third driving machine; 12. fourth driving machine; 7. ultrafast laser surface modification system; 71. laser; 72. temperature and vision control module; 73. film clamping module; 74. rotary clamping module. DETAILED DESCRIPTION

[0029] The following will describe the implementation methods of the present application in detail with the help of accompanying drawings and examples, so that the implementation process of how the present application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0030] See also Figure 1 The present invention provides an ultrafast laser surface modified aluminum alloy welding wire drawing device, including a stand, a first supporting system 1, a wire winding system 2, a welding wire 3, a longitudinal straightening wheel 4, a welding wire straightening system 5, a first driving machine 6, an ultrafast laser surface modification system 7, a second driving machine 8, a slot roller system 9, a second supporting system 10, a third driving machine 11, and a fourth driving machine 12.

[0031] This example controls the welding wire of 2319 aluminum alloy. Porosity and crack defects are prone to occur during the laser welding process of aluminum-lithium alloy.

[0032] The welding wire straightening system 5 is provided with two sets of longitudinal straightening wheels 4, which are used to perform preliminary straightening on the aluminum alloy welding wire to ensure that the welding wire remains in a straight state before entering the ultrafast laser surface modification system 7; the first driving machine 6 is connected to the welding wire straightening system 5, and drives the welding wire through a power transmission system; the slot roller system 9 is provided with grooves, which can ensure that the welding wire is continuously transported along a preset path;

[0033] The ultrafast laser surface modification system 7 includes a laser 71, a temperature-vision control module 72, a film clamping module 73 and a rotating clamping module 74; the laser 71 generates an ultrafast pulse laser, and performs high-speed scanning on the surface of the film carrier through a focusing lens to achieve rapid deposition of micro-nano elements on the surface of the welding wire; the film clamping module 73 is suitable for clamping a film carrier containing trace elements or ceramics, and releases trace elements or ceramic particles under the action of laser to form a uniform modified layer on the surface of the aluminum alloy welding wire; the rotating clamping module 74 can accurately control the rotation speed and direction of the film to ensure the uniformity and consistency of the film during the laser modification process;

[0034] The second driving motor 8 is connected to the ultrafast laser surface modification system 7 to ensure that the welding wire maintains stable movement during the modification treatment to avoid uneven surface modification; the slot roller system 9 is used to change the path of the welding wire so that the welding wire surface with deposited particles is located on the lower side to avoid deviation or jumping; the third driving motor 11 and the fourth driving motor 12 are located on both sides of the ultrafast laser surface modification system 7, and the particles are deposited on the welding wire surface through the ultrafast laser surface modification system 7 to ensure uniform particle deposition on the welding wire surface. The first support system 1 and the second support system 10 serve as support structures for the wire winding system 2 and the slot roller system 9 to ensure the relative position stability of each component and improve the stability and reliability of the overall device.

[0035] The first driving machine 6, the second driving machine 8, the third driving machine 11 and the fourth driving machine 12 are all connected to driving rollers, and the driving rollers are in contact with the welding wire.

[0036] The ultrafast laser surface modification system 7 is equipped with an intelligent control system, which can accurately adjust the driving speeds of the first driver 6, the second driver 8, the third driver 11 and the fourth driver 12 according to preset process parameters and real-time feedback data to ensure the stable operation of the welding wire during the straightening, modification and collection processes; the intelligent control system can adjust the power, scanning speed and film rotation speed of the laser in the ultrafast laser surface modification system 7 in real time.

[0037] The ultrafast laser surface modification system 7 is provided with a temperature-vision control module 72 for real-time monitoring and adjusting the surface temperature of the welding wire during the modification process; the temperature-vision control module 72 determines the surface temperature and particle uniformity of the welding wire based on the collected temperature data and visual data, accurately feeds back to the control system and adjusts the power and scanning speed of the laser to ensure the uniformity and consistency of the welding wire surface modification process.

[0038] The thin film carrier contains alloy elements, rare earth elements and ceramic materials, trace alloy elements such as Mg, Li, Zr, Ti, Sc, rare earth elements such as Ce, La, Y, and ceramic materials such as TiC, TiN, Al 2 O 3 , SiC, etc. In addition to a single film carrier, a multi-layer film stacking technology can also be used to deposit film layers of different components and functions on the surface of the welding wire in sequence to form a multi-level and multifunctional modified layer. The ultrafast laser surface modification system 7 adopts a closed structure to ensure that trace elements or ceramic particles can be accurately deposited on the surface of the welding wire.

[0039] See also Figure 2 , applied to the ultrafast laser surface modification of 2319 aluminum alloy welding wire drawing device, which can be achieved through the following steps:

[0040] Step 1: The aluminum alloy welding wire to be modified is initially straightened by the welding wire straightening system to ensure that the welding wire remains in a straight state before entering the ultrafast laser surface modification system to avoid affecting the modification effect due to bending or twisting of the welding wire; the first driving machine drives the welding wire in the welding wire straightening system to move along a preset path through power transmission to achieve continuous conveying of the welding wire;

[0041] Step 2: The welding wire enters the ultrafast laser surface modification system, and the intelligent control system starts the laser according to the preset process parameters; the laser generates an ultrafast pulse laser with an ultrafast laser power of 15W, a scanning speed of 1500mm / s, a repetition frequency of 3MHz, and a repetition frequency of 5 times. The thin film carrier contains Li, Zr, Sc, Ce, La, and TiC, and their content ratios are 1:2:2:1:1:3. The surface of the thin film carrier is scanned at high speed; during the scanning process, the temperature-vision control module monitors the temperature of the welding wire in real time, and adjusts the power and scanning speed of the laser according to the real-time temperature data and vision data to ensure precise control of the surface modification process of the welding wire; at the same time, the rotary clamping module accurately controls the rotation speed and direction of the film to ensure that trace elements or ceramic particles can be evenly deposited on the surface of the welding wire;

[0042] Step 3: The welding wire after the surface modification by the ultrafast laser is driven by the second driving machine to continue to move along the preset path and finally enter the wire winding system; the wire winding system collects the welding wire after the surface modification and winds it into a disk for subsequent use and storage;

[0043] Step 4: The intelligent control system accurately adjusts the driving speed of the first driving motor and the second driving motor to ensure that the welding wire maintains a stable operating state during the straightening, modification and collection processes; at the same time, the intelligent control system can also monitor the operating state of the ultrafast laser surface modification system in real time. Once an abnormal situation is found, corresponding treatment measures will be taken immediately to ensure the safe and stable operation of the device.

[0044] In summary, the above are only preferred embodiments of the present invention and are not intended to limit the present invention in any form. Any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present invention fall within the protection scope of the present invention.

[0045] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any simple modification, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are within the scope of the technical solution of the present invention.

Claims

1. An ultrafast laser surface modified aluminum alloy welding wire drawing device, characterized in that: It comprises a stand, a first support system (1), a wire winding system (2), a welding wire (3), a welding wire straightening system (5), a first driving machine (6), an ultrafast laser surface modification system (7), a second driving machine (8), a slot roller system (9), a second support system (10), a third driving machine (11), and a fourth driving machine (12); The first support system (1) and the second support system (10) are distributed on both sides of the platform, the wire winding system (2) is installed on the first support system (1), the slot roller system (9) is installed on the second support system (10), the welding wire straightening system (5), the first driving machine (6), the ultrafast laser surface modification system (7), the second driving machine (8), the third driving machine (11), and the fourth driving machine (12) are installed on the platform, the welding wire (3) enters the welding wire straightening system (5) for straightening, and then under the action of the first driving machine (6), the straightened welding wire (3) enters the ultrafast laser surface modification system (7), the welding wire (3) guided out of the ultrafast laser surface modification system (7) is driven to the slot roller system (9) by the second driving machine (8), the welding wire (3) is redirected by the slot roller system (9), and then driven to the wire winding system (2) by the third driving machine (11) and the fourth driving machine (12) in sequence; The ultrafast laser surface modification system (7) comprises a containing box and a laser (71), a film clamping module (73) and a rotating clamping module (74) in the containing box. The rotating clamping module (74) is installed at the top of the containing box, and the film clamping module (73) is installed at the bottom of the rotating clamping module (74). The laser (71) generates ultrafast pulse laser, and the surface of the film carrier at the bottom of the film clamping module (73) is scanned at high speed through a focusing lens to achieve rapid deposition of trace elements on the surface of the welding wire. The film clamping module (73) is suitable for clamping a film carrier containing trace elements or ceramic particles, and the trace elements or ceramic particles are released under the action of laser to form a uniform modified layer on the surface of the aluminum alloy welding wire. The film carrier contains alloy elements, rare earth elements and ceramic materials. The trace alloying element is one of Mg, Li, Zr, Ti, and Sc; The rare earth element is one of Ce, La, and Y; The ceramic material is one of TiC, TiN, Al2O3, and SiC.

2. The ultrafast laser surface modified aluminum alloy welding wire drawing device according to claim 1, characterized in that: The welding wire straightening system (5) is composed of a box body and longitudinal straightening wheels (4) inside the box body. The longitudinal straightening wheels (4) are arranged in two adjacent groups, with each group containing a plurality of wheels.

3. The ultrafast laser surface modified aluminum alloy welding wire drawing device according to claim 1, characterized in that: The ultrafast laser surface modification system (7) is provided with temperature-vision control modules (72) on all sides of the containing box, which are used to monitor and adjust the surface temperature of the welding wire in real time during the modification process; the temperature-vision control module (72) determines the surface temperature and particle uniformity of the welding wire based on the collected temperature data and vision data, accurately feeds back to the control system and adjusts the power and scanning speed of the laser to ensure the uniformity and consistency of the welding wire surface modification process.

4. The ultrafast laser surface modified aluminum alloy welding wire drawing device according to claim 1, characterized in that: The ultrafast laser surface modification system (7) further comprises an intelligent control system, which accurately adjusts the driving speeds of the first driving machine (6), the second driving machine (8), the third driving machine (11) and the fourth driving machine (12) according to preset process parameters and real-time feedback data, so as to ensure the stable operation state of the welding wire during the straightening, modification and collection processes; the intelligent control system can regulate the power, scanning speed and film rotation speed of the laser in the ultrafast laser surface modification system (7) in real time.

5. The ultrafast laser surface modified aluminum alloy welding wire drawing device according to claim 1, characterized in that: The film carrier is a single-layer structure or a multi-layer structure.

6. The ultrafast laser surface modified aluminum alloy welding wire drawing device according to claim 1, characterized in that: The ultrafast laser surface modification system (7) adopts a closed structure.

7. A drawing method of the ultrafast laser surface modified aluminum alloy welding wire drawing device according to any one of claims 1 to 6, characterized in that: The steps include: S1, the aluminum alloy welding wire to be modified is initially processed by a welding wire straightening system (5) to ensure that the welding wire remains in a straight state before entering the ultrafast laser surface modification system (7), thereby effectively avoiding the modification effect being affected by bending or twisting of the welding wire; the first driving machine (6) drives the welding wire to be continuously transported along a preset path through a power transmission system; S2, the welding wire enters the ultrafast laser surface modification system (7), and the intelligent control system starts the laser (71) according to the preset process parameters; the laser (71) outputs an ultrafast pulse laser beam and scans the surface of the film carrier at high speed through a focusing lens; during the scanning process, the temperature-vision control module (72) monitors the surface temperature of the welding wire in real time, and adjusts the power and scanning speed of the laser according to the real-time data to ensure accurate control of the welding wire surface modification process; the rotating clamping module (74) accurately controls the rotation speed and direction of the film to ensure that trace elements or ceramic particles can be evenly deposited on the surface of the welding wire; S3, the welding wire that has undergone the ultrafast laser surface modification treatment is driven by the second driving machine (8) to continue to move along a preset path and finally enter the wire winding system (2); the wire winding system (2) collects the welding wire that has undergone the surface modification treatment and winds it into a disk for subsequent use and storage; S4, the intelligent control system accurately adjusts the driving speed of the first driving machine (6) and the second driving machine (8) to ensure the stable operation state of the welding wire during the straightening, modification and collection process; The intelligent control system monitors the operating status of the ultrafast laser surface modification system (7) in real time, and adjusts the power, scanning speed and film rotation speed of the laser in the ultrafast laser surface modification system (7) in real time to ensure the uniformity and consistency of the welding wire surface modification process.

Images