Principle of laser welding machine
Laser welding can be realized by continuous or pulsed laser beam. The principle of laser welding can be divided into heat conduction type welding and laser deep penetration welding. The heat conduction of laser welding principle: laser radiation heating surface to be machined, the surface heat through the heat transfer oriented internal diffusion, by controlling the pulse width and energy, peak power and repetition rate of the laser parameters, the molten pool, the formation of specific.General use of continuous laser beam material connected with deep penetration laser welding, the welding physical metallurgy processes and the electron beam is very similar, that is the energy conversion mechanism is through the "hole" (Key-hole) to complete the.
Analysis of defects in laser welding: (1) non penetration: the laser energy is insufficient; can be taken to gradually improve the power. The focal position is wrong, the emergence of defocus; welding speed; can gradually reduce the welding speed. The gas pressure is insufficient; the surface of the metal oxide is not clear, the laser reflection, especially in welding of aluminum; the removal of surface impurities. (2): the surface pores oil and other impurities; the welding speed is too fast;
Light welding is an efficient and precise welding method which uses focused laser beam as an energy source to weld the heat produced by the weldment.Laser welding principle, see this web site:Http://baike.baidu /link? Url=RJDxo9ZW3k6UXdTZd1wGfknoh6UATjB8e3fCkStjctaFsBWmumYxMtEI5Z4GmOp3?You can enter this web site and describe it in detail
