Acta Optica Sinica, Volume. 41, Issue 14, 1414001(2021)
Influences of Copper Film Width on Polycarbonate Welding Strength and Weld Morphological Characteristics
The semiconductor laser was used to achieve the transmission welding of polycarbonate (PC) parts. The influences of two kinds of laser absorbers, carbon black (CB) and copper film with carbon black (CWCB), on the weldability of PC parts were analyzed, and the effects of CWCB width on weld morphological characteristics, weld seam deformation, residual stress, and welding strength were further studied. The results show that when CWCB is used as laser absorber instead of CB, the number of bubbles within weld seams is significantly reduced and there occurs obvious deformation of CWCB. The depth and area of deformation increase with the increase of CWCB width. When the CWCB width is 2.5 mm, the depth and area of deformation start to decrease, and the overflow height is stable at 386.32--392.26 μm. In addition, the residual stress and weld width increase as the CWCB width increases. The weld parts have the largest strength of 21.5 MPa when the CWCB width is 1.0 mm, and then the welding strength begins to decrease with the increase of CWCB width.
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Xiaodong Yu, Muhui Jiang, Gongda Zhang, Chuanyang Wang. Influences of Copper Film Width on Polycarbonate Welding Strength and Weld Morphological Characteristics[J]. Acta Optica Sinica, 2021, 41(14): 1414001
Category: Lasers and Laser Optics
Received: Dec. 31, 2020
Accepted: Feb. 5, 2021
Published Online: Jul. 11, 2021
The Author Email: Wang Chuanyang (cywang@suda.edu.cn)