Laser processing equipment is one of the most promising areas of laser application, and more than 20 laser processing technologies have been developed. Laser welding is an important technology in laser processing. The quality of laser processing equipment is directly related to the intelligence and precision of the welding system. An excellent welding system will inevitably produce perfect welding products.
Laser welding systems generally consist of lasers, optical systems, laser processing machines, process parameter detection systems, protective gas delivery systems, and control and detection systems. The laser is the core of the laser welding system.
Laser welding has the advantages of high precision, high efficiency, high strength and timeliness, ensuring quality, output and delivery time. At present, laser welding has become a very competitive processing method in the precision processing industry and is widely used in spot welding, lap welding and sealing welding of workpieces with special requirements in machinery, electronics, batteries, aviation, instrumentation and other industries.
Laser welding requires the laser to have a high rated output power, a wide power adjustment range, and the ability to slowly increase or decrease the power to ensure the quality of the beginning and end of the weld, work stably and reliably, and have a low-order transverse mode. Mold or base mold. Lasers that can be used for welding include CO2 lasers, YAG lasers, LD pumped solid lasers, fiber lasers and semiconductor lasers. High-power semiconductor lasers have become mature, and commercial laser power has reached several kilowatts. The beam energy distribution of the invention is uniform, the spot shape can be adjusted arbitrarily according to needs, the electro-optical conversion efficiency is high, the structure is compact, the weight is light, the volume is small, and it is convenient for on-site application. The disadvantage is that the beam quality is average and the divergence is high.
Our country’s laser welding is at the world’s advanced level, with the technology and ability to use lasers to form complex titanium alloy components over 12 square meters, and has invested in prototypes and product manufacturing of multiple domestic aviation scientific research projects.
At present, laser welding machine technology has been widely used in high-precision manufacturing fields such as automobiles, ships, aircraft, and high-speed rail. It has greatly improved people’s quality of life and led the home appliance industry into the era of precision work. Especially after the 42-meter seamless welding technology created by Volkswagen greatly improved the integrity and stability of the car body, the leading home appliance company Haier Group grandly launched the first washing machine produced using laser seamless welding technology. Through this kind of home appliance technology, people cherish and value science and technology more, and advanced laser technology can bring huge changes to people’s lives.
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