摘要
针对激光透射焊接过程中温度变化难以通过试验手段准确反映的问题,以基于锌粉吸收剂的聚芳砜(PASF)激光透射焊接为研究对象,在COMSOL中建立反映焊接过程的三维有限元模型。通过仿真得到的焊缝宽度与实际焊缝宽度对比验证了模型的准确性。分析了不同焊接工艺参数(激光功率、焊接速度和锌粉吸收剂水平)对温度场的影响规律。结果表明:随着激光功率的增大,最高温度升高;随着焊接速度的提高,最高温度降低;随着锌粉吸收剂水平的提高,最高温度升高但升温速率在下降,且达到最大值后开始下降。
To solve the problem that it is difficult to accurately reflect the temperature change in laser transmission welding process by experimental methods, this paper takes the polyarylsulfone(PASF) laser transmission welding based on zinc powder absorbent as the research object, and established a three-dimensional finite element model reflecting the welding process in COMSOL. The accuracy of the model is verified by comparing the weld width obtained by simulation with the actual weld width. The effect of different welding parameters(laser power, welding speed and zinc powder absorbent level) on the temperature field was analyzed. The results show that with the increases of laser power, the maximum temperature increases. With the increases of welding speed, the maximum temperature decreases. With the increases of zinc powder absorbent level, the maximum temperature increases but the rate of heating is falling, and begins to decrease after reaching the maximum value.
作者
龙庆
于晓东
王超
王传洋
Long Qing;Yu Xiaodong;Wang Chao;Wang Chuanyang(School of Mechanical and Electric Engineering,Soochow University,Suzhou,Jiangsu 215021,China)
出处
《应用激光》
CSCD
北大核心
2021年第3期496-504,共9页
Applied Laser
基金
国家自然科学基础委员会资助项目(51475315)
江苏省高校自然科学基金资助(18KJA460007)。
关键词
激光透射焊接
聚芳砜
锌粉吸收剂
温度场
数值模拟
laser transmission welding
polyarylsulfone
zinc powder absorbent
temperature field
numerical simulation
