Coherent | Body-in-White: Zero-Gap Welding of Galvanized Sheet Metal (for e-mobility)

Battery system manufacturers require cost-effective, fast and reliable welding methods for thin aluminum and copper foil applications (welding of dissimilar materials) for e-mobility. Non-contact laser welding offers an attractive option, but has not been usable in the past with foil thicknesses below 200 μm. Now, a new type of Adjustable Ring Mode (ARM) fiber laser with a high brightness center beam overcomes these limitations. The ARM laser ring beam first preheats the material to increase the material absorption. Then, the center beam, with its high brightness (high energy density but low total energy), performs the actual welding without damaging the material by introducing in too much heat. Finally, the independently controlled ramp down of the ring power allows the material to cool in a controlled manner, thus minimizing weld pool turbulence and eliminating spatter. Learn more: https://www.coherent.com/lasers/laser/highLight-fl-arm-fiber-laser Founded in 1966, Coherent Inc. is one of the world’s leading providers of lasers and laser-based technology for industrial, commercial, and scientific customers. Our common stock is listed on the Nasdaq Global Select Market and is part of the Russell 1000 and Standard & Poor’s MidCap 400 Index. For more information about Coherent, visit the company's website at https://www.coherent.com for product and financial updates.