Progress of Laser Fusion Welding Technology of Copper and Its Alloy
Laser welding is considered to be a suitable process for copper joining.However,there are still challenges in copper welding with infrared laser because of the low absorptivity of copper to infrared laser.But the absorptivity of copper to visible laser with short wavelength is several times higher than that to infrared laser,so the visible laser shows great potential in rapid and high-quality welding of copper.The development of laser fusion welding process of copper and its alloy was summarized,the welding process of copper to infrared laser,visible laser and dual-beam laser was introduced,the advantages and disadvantage of each process were compared and analyzed.Finally,the application of green and blue laser,dual-beam laser on the welding of copper and its alloy was prospected.
copper and its alloyinfrared laservisible laserdual-beam laserlaser welding
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