Analysis of disadvantages of laser welding machine and argon arc welding machine. First of all, laser welding laser welding machine is a kind of high-energy beam welding. Generally, laser welding equipment is used for welding. Laser welding uses high-power coherent monochromatic photon beam to focus laser beam for heat source welding. . The advantage is that the energy control can be performed accurately when needed in a vacuum, so a precise connection device can be realized. It can be widely used in many of our different metals, especially to solve the welding of some difficult-to-weld metals and dissimilar metals.