Laser welding uses a high-energy-density laser beam to focus on the material, causing the surface of the material to absorb the high-intensity laser energy and melt it. Then the material is welded through laser cooling and solidification. It has superior welding performance, a small heat-affected zone, and stable welding quality, and It has the advantages of small deformation, fast welding speed, high degree of automation, and highly welding difficult. As an advanced processing and remanufacturing method, laser welding technology plays an increasingly important role in modern aerospace, national defense and national construction industries.

The traditional laser welding process is the basic process of laser welding. It uses a high-energy-density laser beam as a heat source to act on the materials to be welded, causing a solid-liquid phase change to achieve an in-situ connection of the materials to be welded. The airflow waves generated by high-temperature evaporation on the surface of the substrate during the welding process have a certain cleaning effect on the welding interface.

In the traditional laser welding process, there are many different laser heads, including high-speed vibrating mirror handheld heads, T-shaped welding heads and mini swing welding heads. The handheld welding heads have a smart internal design, good interactive control system, and adjustable spot width. The welding fault tolerance is strong, which makes up for the shortcomings of small laser welding spots, expands the tolerance range and welding width of processed parts, and obtains better welding shapes; when the weld gap is large, in order to improve the welding shape and improve the welding structure For adaptability, a wire feeding mechanism can be added. The T-shaped welding head is a directly adjustable low-power welding head that can be adjusted according to product characteristics to achieve the best welding effect. It has great advantages in welding small metal parts, especially eyeglass frames. The mini swing welding head is a lightweight, low-cost, high-stability dual-motor swing welding head. It is not only suitable for platform welding, but also suitable for domestic small manipulators with high flexibility. The welding head adopts motor-driven X and Y-axis vibration lenses and has various swing welding parameters. It can improve the welding quality by adjusting the swing welding parameter.

Conventional laser welding is widely used in the automotive industry, electronics industry, medicine and other fields. In the automotive industry, laser welding is used for sheet metal welding such as roofs, bodies, side frames, etc. In addition, the application of laser welding can also be seen in the welding of automotive sheet structural parts and auto parts. In the electronics industry, laser welding has unique advantages in the packaging of integrated circuits and devices because of its low welding thermal impact, low thermal stress and fast thermal forming. In recent years, laser welding has been gradually used in the assembly process of printed circuit boards. In the medical field, laser welding is gradually used in surgical, cardiovascular, ophthalmic and other surgical auxiliary equipment and tools, such as heart stents, gastroscopic biopsy forceps, balloon catheters and so on. Compared with traditional welding, laser welding is a non-contact processing technology with a narrow thermal influence range and high efficiency, which can make medical equipment more accurate and better performance.

Laser arc composite welding technology is a method that combines laser and arc heat sources to obtain greater welding penetration and achieve high efficiency and high-quality welding process. It can use the characteristics of laser and arc to make up for the shortcomings of laser welding and arc welding, and the organic combination of the two produces new characteristics (high energy density, high energy utilization, etc.). Laser arc composite welding is a side-axis composite welding composed of 12kw fiber laser and carbon dioxide gas protection welding.

Fiber laser has low energy of gathering spots and is more suitable for deep penetration welding. The blue light aggregation spot is large, the energy is small, and the plate can be preheated to form a certain temperature field, so that the laser energy absorption of the weld pool is more uniform, the welding hole is eliminated, the welding quality is improved, the absorption rate of the fiber laser plate is improved, the welding efficiency and quality is effectively improved, and the welding defects are reduced. It has better welding adaptability for thin, high-reflectivity or high-thermal conductivity materials.

In the automotive industry, laser composite welding is used for the connection manufacturing of components such as car doors, and can also be used for the connection manufacturing of power battery trays for new energy vehicles. In the petrochemical industry, laser composite welding improves the welding quality and efficiency of fuel tank welding. In the welding of oil transportation pipelines, the welding process is more stable, the weld is well formed, the melting width ratio is good, and there is no biting edge, which meets the engineering requirements. In the aerospace field, laser composite welding is used for the welding of medium and thick high-strength steel plates, which can greatly reduce the labor intensity of workers and improve the efficiency of welding production.

Xi'an Guosheng Laser Technology Co., Ltd. is a high-tech enterprise specializing in R&D, manufacturing and sales of automatic laser cladding equipment, high-speed laser cladding equipment, laser quenching equipment, laser welding equipment and 3D printing equipment. Our Laser Welding Equipment is cost-effective and sold domestically and abroad. If you're interested in our products, please contact us at bob@gshenglaser.com.