The impact strength of butt welded vibration welds related to microstructure and welding history
The impact strength of butt welded vibration welds related to microstructure and welding history
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对接焊振动焊缝的冲击强度与显微组织和焊接历史有关
DOI：
10.1002/pen.760292309
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发表时间：
1989
影响因子：
3.2
通讯作者：
G. Ehrenstein
中科院分区：
文献类型：
--
作者：
A. Schlarb;G. Ehrenstein
对聚丙烯板之间的振动对接焊缝进行了研究。通过冲击试验确定的焊缝质量已作为焊接变量（压力和振动幅度）的函数进行了检查。此外，还对焊缝的微观结构进行了检查、分类，并将其与焊接变量和焊缝质量相关联。作为时间函数的熔深显示出三种不同的状态，并且表明一旦达到第三状态，焊缝的冲击强度就与时间无关。达到第三状态所需的时间随着压力或振幅的增加而减少，并且对振动的振幅比对压力更敏感。最高质量的焊缝是在低压和低振幅下产生的，相应的时间较长才能达到状态三，并表现出独特的、易于识别的微观结构。
A study has been made of vibration butt welds between plaques of polypropylene. The quality of the welds, as determined by impact tests, has been examined as a function of the welding variables: pressure and vibration amplitude. In addition, the microstructure of the welds has also been examined, classified, and correlated with the welding variables and weld quality. Penetration as a function of time shows three distinct regimes and It is shown that the impact strength of the welds is independent of time once the third regime is reached. The time required to reach the third regime decreases as pressure or amplitude increases and is more sensitive to amplitude of vibration than to pressure. The highest quality welds were produced at low pressure and low amplitude with corresponding long times to reach regime three and exhibited a unique, readily identifiable microstructure.