Principle of YAG laser welding:

YAG laser welding is to use high-energy pulsed laser to implement welding on the workpiece. It uses a pulsed xenon lamp as the pump source and ND:YAG as the working substance to generate laser light.

The laser power supply first pre-ignites the pulsed xenon lamp, and then discharges the pulsed xenon lamp through the laser power supply, so that the xenon lamp generates light waves with a certain frequency and pulse width.

The light wave is irradiated by the laser crystal through the concentrator cavity, which excites the crystal to produce laser light, and then the resonant cavity produces a pulsed laser light with a wavelength of 1064nm. The laser is transmitted and focused by the optical fiber and then radiated to the surface of the workpiece, causing local melting of the workpiece to achieve welding.

Case of automatic aluminum alloy laser welding

Advantages and features of the equipment

1. It can make spot welding, butt welding, stack welding and sealing welding on the workpiece;

2. Fast welding speed, high depth-to-width ratio, small heat-affected zone and small deformation in the welding process;

3. Welding seam is flat and beautiful, no or only simple treatment is needed after welding;

4. Multi-beam welding can be integrated to realize energy splitting and time splitting;

5. Integration of energy negative feedback laser control technology, to achieve consistency of welding effect from start to finish;

6. Integration of arbitrary waveform control technology, can accurately control the weld joint formed by each pulse energy, to achieve the best welding effect.