Laser welding is an important part of the application of laser processing technology, and it is the most watched and most promising welding technology in the 21st century.
Welding of medium and large thickness steel plates is mainly used in rail transit, shipbuilding, nuclear power equipment, and other industries, and requires extremely high welding technology, equipment, and welding quality. Welding technology is a key technology in ship manufacturing and the development of the shipbuilding industry.
With the rapid development of the global manufacturing industry, welding process technology has become more and more widely used, and the level of welding technology has become higher and higher.
As an emerging processing method, laser manufacturing technology has developed rapidly in the past ten years. It has gradually penetrated into the processing and manufacturing production lines of all walks of life.
Laser welding gas is mainly aimed at the welding of thin-walled materials and precision parts and can realize spot welding, butt welding, stitch welding, sealing welding, etc.,
Laser cladding technology refers to the placement of selected coating materials on the surface of the coated substrate with different filler methods. Laser irradiation melts with the surface layer of the substrate.
To eliminate or reduce the defects of laser welding, some other heat sources and laser hybrid welding processes are proposed, mainly including laser and arc, laser and plasma arc, laser and induction heat source hybrid welding, and multi-beam laser welding.
Laser hybrid welding technology refers to a hybrid welding technology that combines laser and other welding methods. Its advantage is that it can give full play to the advantages of each welding method and overcome some shortcomings.
Laser welding equipment mainly includes laser, beam transmission, focusing system, gas source (shielding gas), nozzle, welding machine, workbench, operating panel, power supply, control system, etc. The core of laser welding equipment is a laser composed of an optical oscillator and a medium placed between the mirrors at both ends of the oscillator cavity.
