Laser processing equipment is one of the most promising fields of laser application. At present, more than 20 kinds of laser processing technology have been developed. Laser welding is an important technology in laser processing. The quality of laser processing equipment is directly related to the intellectualization and precision of welding system. An excellent welding system will inevitably produce perfect welding products.
Laser welding system is generally composed of laser, optical system, laser processing machine, process parameter detection system, protective gas transmission system, control and detection system. Laser is the core of laser welding system. Using laser welding has the advantages of high precision, high efficiency, high strength and timeliness, ensuring the quality, output and delivery time. At present, laser welding has become a very competitive processing means of precision machining industry, widely used in machinery, electronics, battery, aviation, instruments and other industries with special requirements of the workpiece spot welding, lap welding and sealing welding. Laser welding requires the laser to have a higher rated output power, a wide range of power adjustment, and the ability to slowly increase or decrease the power, to ensure the quality of the starting and ending parts of the weld, stable and reliable work, transverse mode for low-order mode or fundamental mode. Lasers that can be used for welding include CO2 lasers, YAG lasers, LD pumped solids lasers, fiber lasers, and semiconductor lasers. High power semiconductor lasers have become mature and commercial laser power has reached several kilowatts. The invention has the advantages of uniform beam energy distribution, spot shape can be adjusted arbitrarily according to needs, high electro-optical conversion efficiency, compact structure, light weight, small size, and convenient field application. The disadvantage is that the beam quality is general and the divergence is high.
China’s laser welding is at the advanced level in the world, with the technology and ability to use laser forming more than 12 square meters of complex titanium alloy components, and has invested in a number of domestic aviation research projects prototype and product manufacturing.
At present, laser welding machine technology has been widely used in automobiles, ships, aircraft, high-speed rail and other high-precision manufacturing fields. Greatly improve people’s quality of life, leading the household appliance industry into the seiko era. Especially after the 42-meter seamless welding technology created by Volkswagen greatly improves the integrity and stability of the body, Haier Group, the leading enterprise of home appliances, launched the first washing machine produced by laser seamless welding technology. Through this home appliance technology, people cherish and pay more attention to science and technology, advanced laser technology can bring great changes to people’s lives.
Post time: Mar-14-2023