Laser welding machines are widely used in the handicrafts and jewelry industry, especially for precise necklaces and other jewelry. Like laser marking machines, their application in the jewelry industry is continuously developing and deepening. Laser welding instantly melts and fuses handicrafts and jewelry. The principle is that under laser action, the metal surface undergoes a series of changes, heating and quickly conducting heat to the depth. At a certain laser power density, the surface melts, and at higher power densities, it vaporizes instantly, forming a melt pool. During welding, the relative movement of the workpiece and laser causes the molten metal to accelerate along a certain angle, rapidly cooling and forming a weld seam.