Laser welding processing system changes life
Laser processing is one of the most promising areas of laser applications, and more than 20 laser processing technologies have been developed. Among them, laser welding is an important technology in laser addition. The quality of laser welding is directly related to the intelligence and precision of the welding system. An excellent welding processing system will inevitably produce a perfect welding product.
Laser welding systems generally consist of lasers, optical systems, laser processing machines, process parameter detection systems, protective gas delivery systems, control and inspection systems. The laser is the heart of the laser welding system.
Laser welding has the advantages of high precision, high efficiency, high strength and timeliness to ensure quality, output and delivery time. At present, laser welding has become a highly competitive processing method in the precision machining industry. Used for spot welding, lamination welding and sealing welding of workpieces with special requirements in the mechanical, electronic, battery, aerospace, instrumentation and other industries.
Laser welding requires the laser to have a higher rated output power, a wider power adjustment range, a power ramp-down capability, to ensure the quality of the weld start and end parts, stable and reliable operation, and the transverse mode is a low-order mode or Basic model. Lasers that can be used for soldering are CO2 lasers, YAG lasers, LD-pumped solid-state lasers, fiber lasers, and semiconductor lasers. High-power semiconductor lasers have matured, and commercial laser power has reached several kilowatts. The beam energy distribution of the high-power semiconductor laser is uniform, the spot shape can be arbitrarily adjusted according to requirements, the electro-optical conversion efficiency is high, the structure is compact, the weight is light, and the volume is small, which is convenient for field application. The disadvantage is that the beam quality is generally high and the divergence is high.
China's laser welding is at the advanced level in the world. It has the technology and capability to use laser to form complex titanium alloy components of more than 12 square meters, and has invested in the prototype and product manufacturing of many domestic aviation research projects. In October 2013, Chinese welding experts won the Brooke Award, the highest academic award in the field of welding. The level of laser welding in China has been recognized by the world. At present, the laser welding machine technology has been developed to be widely used in high-precision manufacturing fields such as automobiles, ships, airplanes, and high-speed rails, which has brought significant improvement to people's quality of life, and has led the home appliance industry into the era of precision. Especially after the 42-meter seamless welding technology created by Volkswagen has greatly improved the integrity and stability of the vehicle body, Haier Group, the leader in home appliances, has launched the first washing machine produced by laser seamless welding technology. The people cherish and attach importance to science and technology, and advanced laser technology can bring about tremendous changes in people's lives.