Abstract：The influence of laser transmission welding parameters for HDPE on welding quality was investigated by method of orthogonal design.Tensile and section tests were conducted for experimental samples,and the influence of welding factors on shear strength and welding seam size was analyzed,which indicated subsequence according to influence for HDPE was welding velocity →laser power→cooling time→beam diameter on the material→laser frequency →fixture pressure,and high laser power density can result in coking on samples’faces and fake fracture appeared when welding seam was not even.The optimized welding parameters were determined using range method.
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