Why Copper Welding Produces Spatter with Infrared Lasers?
Copper reflects most infrared laser energy, so the welding process starts with weak and unstable energy coupling. Once copper begins to melt, absorption rises quickly, and this sudden transition can trigger spatter. Infrared copper welding often enters an unstable keyhole condition, which increases vapor pressure fluctuation and molten metal ejection. Shorter wavelength lasers improve copper […]
