聚丙烯塑料板搅拌摩擦焊接头缺陷分析

摘要

搅拌摩擦焊具有高效、节能、无污染等优点，既能焊接铝合金等低熔点材料，也能焊接聚丙烯塑料板材。各种工艺参数合理匹配时，焊缝美观，质量良好。但是，工艺参数选择不当时，焊缝会存在明显缺陷。本文分析了用搅拌摩擦焊焊接聚丙烯塑料板时所出现的飞边、孔洞等缺陷。%Friction stir welding have more advantages as high effectiveness, energy saving and environmental friendly. It not only can weld low melting point materials such as aluminum alloy but also weld polypropylene ( PP) plastic plate. The appropriate welding parameters can make the quality reliable and the weld joint forms well. But, the weld joint may have exists defect when welding parameter choice unsuitable. This paper analyzes the defects such as flash and holes when using friction stir welding for PP plastic plate.