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在材料加工领域，激光焊接正得到广泛的关注，并已成为替代其它焊接的主要手段之一。由于激光束具有加热面积小，能量密度高，瞬时可使光照区达到熔化温度，因而焊点（缝）结合强度高，热影响区小，对母材性能影响小。CO。激光和固体Nd：xHG激光是目前工业中应用较多的两种激光
In the field of material processing, laser welding is gaining widespread interest and has become one of the major alternatives to other welding. Because the laser beam has a small heating area, high energy density, instantaneous melting temperature can reach the light, so the weld (seam) high bonding strength, heat affected zone is small, little effect on the performance of the parent material. CO. Laser and solid Nd: xHG lasers are the two most commonly used lasers in the industry today