今天激光器普遍应用于诸如电池、继电器外壳、起搏器、电子元器件、高速电机以至液压元件等小型元件的光能焊接.激光焊接首先是将两个焊接部份熔化,然后使之熔合在一起.实际上,很多金属具有反射性和传导性,这给加工带来困难.小功率光束几乎完全反射,所以光束常是脉动的,脉冲上升边的强度比其它部份强得多.大功率光密度可减小反射能力.金属表面可涂一层吸收材料如石墨等,以吸收足够的能量促使金属熔化. Today’s lasers are commonly used in optical energy welding of small components such as batteries, relay housings, pacemakers, electronic components, high-speed motors, and even hydraulic components. Laser welding first melts two welds together and then fits together In fact, many metals are reflective and conductive, which causes difficulties in processing.The low power light beam is almost totally reflected, so the light beam is usually pulsating and the strength of the rising edge of the pulse is much stronger than in other parts. Density can reduce the reflective ability of the metal surface can be coated with a layer of absorbent material such as graphite, in order to absorb enough energy to promote the metal melting.