Jan 14, 2020
Due to the rapid development of modern science and technology, the requirements for product welding processes are becoming higher and higher in various industries. Traditional welding processing technologies and equipment have long been unable to meet the status quo. The emergence of fiber laser welding has just solved this problem, The demand is also growing. Today the author summarizes for you the application of laser welding in various industries.
1 Application in the field of electronic components
Under the traditional welding process, the welding surface will have excessively high temperature and radiation, which will damage the electronic component itself, cause the electronic component to break or have poor contact, and affect its surrounding environment. Although these adverse effects can be solved by relevant means, this will undoubtedly have a shortened impact on the service life of electronic components and even affect subsequent normal work. From the current welding practice in China, laser welding has been widely used in the field of electronic component welding. Because the laser welding process has the excellent characteristics of being able to carry out local heating within a small range, and it can also accurately control the local temperature of the welding part of the electronic component. In simple terms, the laser welding process can achieve an ideal state that produces a higher average temperature in a small area without adversely affecting the surrounding area.
2 Application in welding of aluminum alloy materials
The laser welding process is also widely used in the welding of aluminum alloy materials in the automotive industry. In the welding process of automobile-related components, the side-blow protective gas method is the most commonly used welding method, which can achieve all-round protection of galvanized sheet for vehicles. Judging from the current development practice of China's automobile manufacturing industry, aluminum alloy is a relatively common industrial material, which can play the role of anti-corrosion of the car body and reduce the weight of the car. Therefore, aluminum alloy materials are widely used in many aspects such as engines, wheels, and instrument panels. Laser welding has unique advantages in welding aluminum alloy materials, because it can achieve efficient protection of aluminum alloy materials. However, there are certain disadvantages in using laser welding technology in aluminum alloy welding practice, which is also determined by the thermal performance of aluminum alloy itself. Although this characteristic can achieve effective protection of aluminum alloy components, it cannot effectively avoid welding spatters, pinhole collapse, and other welding processes.
3 Application in welding of magnesium alloy materials
The automobile manufacturing industry has developed by leaps and bounds in recent years, and the manufacturing materials of automobile parts have gradually transitioned from aluminum alloys to magnesium alloys. Compared with aluminum alloy automobile parts, magnesium alloy has the characteristics of light weight, and rigidity, strength, electrical conductivity, thermal conductivity and other properties have been improved and optimized to a certain extent. In addition, the magnesium alloy can be recycled, the recycling effect is better, and the economic cost is lower. The laser welding process can generate an oxide film in the welding part of the device during the welding process of the magnesium alloy material, thereby achieving efficient protection of the magnesium alloy device. Not only in the field of automobile manufacturing, the extensive use of magnesium alloys in the aerospace industry has also made the laser welding process a mainstream welding technology because it can meet the complex requirements of the production and manufacture of machinery and equipment used in aerospace, and it can also effectively reduce the weight of aircraft .
4 Research progress of laser welding process
Regardless of domestic or foreign laser welding practices, the research focus of future laser welding technology focuses on the following three aspects: First, the effective control of the welding process. Second, the development and upgrading of lasers. Finally, the dynamic monitoring aspect of weld defects. In the second aspect, improving the electro-optical conversion efficiency is the core content of laser R & D and upgrading, because China's current laser structure is still very complex, how to achieve the improvement and upgrade of the internal structure and external performance of the laser is one of the important tasks . In the third aspect, because a single sensing technology cannot meet the requirements of many complex inspection tasks, in the future, it is necessary to further develop the monitoring technology in the welding process, and try to fully combine multiple forms of sensing technology to continuously Improve the accuracy of inspection tasks.