Why Copper Welding Produces Spatter with Infrared Lasers?
Copper is widely used in electrical products, but infrared laser welding often causes severe spatter. This instability increases defects, contamination, and manufacturing cost. Copper welding produces spatter1 with infrared lasers because solid copper absorbs infrared light poorly at the start of the process. When melting begins, absorption rises quickly, so heating becomes unstable and molten […]
