激光点焊 is a non-contact process which uses a laser to create a single weld spot to weld metals together. Lasers are capable of delivering a pulse of light with accurate, repeatable energy and duration. When the pulse is focused into one place - a small spot - (adjustable anywhere from approximately 0.1 to 2.0 mm in diameter) on the part, the energy density becomes quite large. The light is absorbed by the material causing a "keyhole effect" as the focused beam drills into, vaporizes, and melts some of the metal. As the pulse ends, the liquefied metal around the keyhole flows back in, solidifying and creating a small spot weld. This entire process just a few milliseconds.
激光电焊机每秒可发射多个脉冲，并可通过移动工件或光学器件，允许进行单独的“点”焊接或一系列重叠点焊，以产生 结构稳固 和/或密闭性强的激光焊缝。
参见 激光焊 了解更多信息。