Kuo Chil-Chyuan, Xu Jing-Yan, Lee Chong-Hao
Department of Mechanical Engineering, Ming Chi University of Technology, No. 84, Gungjuan Road, New Taipei City 243, Taiwan.
Research Center for Intelligent Medical Devices, Ming Chi University of Technology, No. 84, Gungjuan Road, New Taipei City 243, Taiwan.
Polymers (Basel). 2022 Jun 25;14(13):2582. doi: 10.3390/polym14132582.
Friction welding (FRW) is a promising method for joining cylindrical components of dissimilar and similar polymers or metals. In particular, FRW is capable of generating defect-free welds. Fused deposition modeling (FDM) has been widely employed in the automotive industry, ranging from lightweight tools, testing models, and functional parts. Conventionally, dissimilar parts fabricated by FDM are joined by glue. However, distinct disadvantages of this approach include both low joining strength and low joining efficiency. Hitherto, little has been reported on the characterizations of weld strength of FRW of dissimilar parts fabricated by FDM. In addition, FRW of dissimilar polymeric materials is a difficult task because different polymers have different physical, rheological, and mechanical properties. In this study, the effects of welding revolution on the weld strength of friction welding dissimilar parts fabricated by FDM are investigated experimentally. It was found that the average flexural strength of dissimilar polymer rods fabricated by FRW is about 1.52 times that of dissimilar polymer rods fabricated by gluing. The highest flexure strength can be obtained by FRW using polylactic acid (PLA) and PC (polycarbonate) rods. The average impact strength of dissimilar polymer rods fabricated by FRW is about 1.04 times that of dissimilar polymer rods joined by gluing. The highest impact strength can be obtained by FRW using PLA to PLA rods.
摩擦焊接(FRW)是一种用于连接不同和相似聚合物或金属的圆柱形部件的有前途的方法。特别是,FRW能够产生无缺陷的焊缝。熔融沉积建模(FDM)已在汽车工业中广泛应用,范围涵盖轻质工具、测试模型和功能部件。传统上,由FDM制造的不同部件通过胶水连接。然而,这种方法的明显缺点包括连接强度低和连接效率低。迄今为止,关于由FDM制造的不同部件的FRW焊缝强度的表征报道很少。此外,不同聚合物材料的FRW是一项艰巨的任务,因为不同的聚合物具有不同的物理、流变和机械性能。在本研究中,通过实验研究了焊接转速对由FDM制造的摩擦焊接不同部件的焊缝强度的影响。结果发现,通过FRW制造的不同聚合物棒的平均弯曲强度约为通过胶合制造的不同聚合物棒的1.52倍。使用聚乳酸(PLA)和聚碳酸酯(PC)棒进行FRW可获得最高的弯曲强度。通过FRW制造的不同聚合物棒的平均冲击强度约为通过胶合连接的不同聚合物棒的1.04倍。使用PLA与PLA棒进行FRW可获得最高的冲击强度。