基于超声跨态处理的焊接热循环试验

发布时间：2018-01-28 13:07

本文关键词： 超声跨态处理激光焊接焊接热循环 TC钛合金　出处：《焊接学报》2015年08期 　论文类型：期刊论文

【摘要】：设计了基于超声跨态处理条件下的激光焊接热循环测试试验,分析超声振动对焊接过程的热影响表明,功率超声对焊接过程的热影响主要集中在声学效应、传热学效应及机械搅拌作用三个方面;研究了不同超声振动功率对焊接最高温度、加热速度、高温停留时间以及冷却时间等特征参数的影响规律,并结合功率超声对焊接过程的热影响分析对其本质原因进行了深入研究.结果表明,随超声功率的增加,焊接最高温度和高温停留时间均呈先降低后升高最后再降低的趋势,并且焊接最高温度在超声振动功率为1 200 W左右达到最大值;升温时间呈持续增加的趋势,但不同超声功率所对应的增加速率各不相同,而冷却时间则保持减小趋势.
[Abstract]:The thermal cycle test of laser welding based on ultrasonic transmodal treatment is designed. The thermal effect of ultrasonic vibration on welding process is analyzed. The thermal effect of power ultrasonic on welding process is mainly focused on acoustic effect. Heat transfer effect and mechanical stirring effect; The effects of different ultrasonic vibration power on the welding maximum temperature, heating speed, high temperature residence time and cooling time were studied. Combined with the analysis of thermal effect of power ultrasonic on welding process, the essential reasons are studied. The results show that the ultrasonic power increases with the increase of ultrasonic power. The maximum welding temperature and residence time at high temperature were decreased first and then increased and then decreased, and the maximum welding temperature reached the maximum at 1 200 W of ultrasonic vibration power. The heating time is increasing continuously, but the increasing rate of different ultrasonic power is different, while the cooling time is decreasing.
【作者单位】：海军航空工程学院青岛校区航空机械系;中国石油大学(华东)储运与建筑工程学院;海军装备部航技部;
【基金】：国家自然科学基金资助项目(50804053) 海军航空工程学院博士研究生创新基金资助项目(20121009)
【分类号】：TG402;TG456.7
【正文快照】： 0序言激光焊接是一种高度非线性的瞬态热作用过程,焊接温度是控制焊接质量、研究焊接冶金以及进行力学分析的前提[1,2].超声跨态处理(ultrasonicprocessing across different phases based on laser weld-ing,UPPLW)是指在激光焊接修复薄板试件时,在扫描位置同侧附近区域随焊

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