YAG Laser Spot Welding of PET and Metallic Materials
YAG Laser Spot Welding of PET and Metallic Materials
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DOI：
10.2961/jlmn.2011.01.0015
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发表时间：
2011-03-01
影响因子：
1.1
通讯作者：
Otsuka, Y.
中科院分区：
文献类型：
--
作者：
Farazila, Y.;Miyashita, Y.;Otsuka, Y.
异种材料接头在汽车、飞机、医疗、电子等工业领域有着广泛的应用。此外，产品中塑料和金属的结合将在特定的工程应用中具有优势。本文研究了用YAG激光点焊直接连接塑料和金属材料之间的异种材料接头。实验结果表明，聚对苯二甲酸乙二醇酯（PET）可以成功地与铝合金（A5052）、不锈钢（sus304）和铜（Cu）结合。通过剪切拉伸试验对接头强度进行评价。在PET/Cu接头的情况下，无论热输入如何，连接强度几乎不变。而PET/A5052和PET/SUS304接头的强度随热输入的增加而增加。截面观察表明，PET/Cu接头没有明显的熔池。另一方面，PET/A5052和PET/SUS304接头在金属材料侧界面处存在明显的熔池。由于所用金属材料的材料性质不同，如激光的反射率和吸收率、热导率等，会导致界面形貌的差异，并可能影响连接强度。
Dissimilar materials joint has a great interest in industrial applications including automotives, aircrafts, medical, electronic industry, etc. Moreover, the combination of plastics and metals in the product would cater advantages in specific engineering application. In this study, direct joining using YAG laser spot welding for dissimilar materials joint between plastic and metallic materials has been investigated. Experimental result showed polyethylene terephthalate (PET) could be successfully joined to aluminum alloy (A5052), stainless steel (SUS 304) and copper (Cu). Shear tensile test was carried out to evaluate the joining strength. In the case of PET/Cu joint, the joining strength was almost constant regardless of heat input. However, the strength increased with increasing heat input for PET/A5052 and PET/SUS304 joints. Cross-sectional observation of the joined specimen showed no significant molten pool in the case of PET/Cu joint. On the other hand, an obvious weld pool was observed at the interface in metallic material side for PET/A5052 and PET/SUS304 joints. Differences of morphology at the interface would result from different material properties, such as reflectivity and absorptivity of laser, thermal conductivity, etc., of metallic materials used and might affect the joining strength.