Technical Principle
Laser-arc hybrid welding adopts the synergistic effect of dual heat sources: laser and electric arc. It combines the high energy density of laser beams with the preheating effect of electric arcs to greatly improve welding efficiency. The focused energy of the laser beam forms the core of the molten pool, while the electric arc expands the molten pool and supplements heat. The auxiliary electromagnetic field technology dynamically regulates molten pool flow and reduces defects such as pores and cracks. This technology supports both heat conduction welding (precision welding for thin plates) and deep penetration welding (high-speed welding for thick plates). It is ideal for medium and thick plate welding and has relatively low requirements for workpiece assembly accuracy.
Efficiency Advantages
Higher Welding Speed: Compared with conventional arc welding, hybrid welding can increase welding speed by 50%–200%. For instance, a welding speed of over 1.5 meters per minute can be achieved in shipbuilding. Meanwhile, heat input is reduced by 30%–40%, which greatly lowers deformation rate.
Automated Integration: Robots are equipped with laser tracking or visual sensing systems (accuracy ±0.05 mm) to support 24-hour continuous operation. The daily welding output is 3 to 5 times that of manual work. Taking automobile exhaust manifold welding as an example, model changeover takes only 5 minutes, and the cycle time is shortened to 90 seconds per workpiece.
Stable Process Performance: Arc voltage fluctuation is controlled within ±1 V, the porosity rate of weld seams is less than 0.5%, and the first-pass yield reaches 99.6%.
Core Advantages
Superior Welding Efficiency & Low Deformation: Compared with conventional arc welding, laser-arc hybrid welding delivers a 50%–200% faster welding speed. In shipbuilding applications, a welding speed above 1.5 meters per minute can be realized. Meanwhile, heat input drops by 30%–40%, significantly reducing workpiece deformation.
Highly Automated & Flexible Production: Robots are fitted with laser tracking or visual sensing systems with an accuracy of ±0.05 mm, enabling non-stop 24-hour production. The daily welding output is 3 to 5 times higher than manual welding. For automobile exhaust manifold welding, product changeover takes merely 5 minutes, and the production cycle is cut to 90 seconds per part.
Excellent Process Stability: Arc voltage fluctuation is limited within ±1 V, weld seam porosity is less than 0.5%, and the first-pass yield hits 99.6%.
