Study on Laser Welding Technology of PC Plastic

Xiaohong Wu


For the PC plastic laser welding, the equipment system and welding requirements were designed.The the fixture was used to press the PC plastic for laser welding. The color of the PC were designed that the up layer was white, and the lower was black, so the up layer absorbed laser energy and melt in the plastic contact surface, forming a welding area. Then the orthogonal optimization experiment was designed under the laser power, defocusing distance and the welding speed. It finally obtained the optimum process parameters that the welds was without bubble and space. The further tensile test results showed that the tensile strength increased with the increase of the welds width, the tensile strength reached to the top when the welds width was 1.2 mm.


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