摘要
研究了焊接速度对填材填充激光焊接熔池动态行为的影响。研究结果表明:焊接速度对填材填充熔池过程中的匙孔三维形貌及熔池流动行为具有显著影响;填材填充激光焊接熔池时,提高焊接速度有利于提高匙孔的稳定性;随着焊接速度提高,匙孔深度以及孔壁底部流动速度的波动幅度减小,维持匙孔张开的驱动力增大,匙孔附近的流场由匙孔壁面向熔池方向流动的趋势增强。
This study considers the influence of welding speed on the dynamic behavior of the filler metal filling a molten pool. Results show that welding speed significantly influences the three-dimensional keyhole shape and flow behavior of the molten pool. When filler metal is used to fill a laser welding molten pool, an increased welding speed improves the stability of the keyhole. With the increase of welding speed, the fluctuations in keyhole depth and flow velocity at the bottom of the keyhole wall decrease, the driving force for opening the keyhole is enhanced, and the flow trend of the flow field near the keyhole from the keyhole wall to the molten pool is enhanced.
作者
彭进
许红巧
王星星
杨嘉佳
李宁宁
张芙蓉
Peng Jin;Xu Hongqiao;Wang Xingxing;Yang Jiajia;Li Ningning;Zhang Furong(School of Materials,North China University of Water Resources and Electric Power,Zhengzhou,Henan 450045,China;State Key Laboratory of Advanced Welding and Joining,Harbin Institute of Technology,Harbin,Heilongjiang 150001,China)
出处
《中国激光》
EI
CAS
CSCD
北大核心
2020年第3期129-134,共6页
Chinese Journal of Lasers
基金
河南省自然科学基金(162300410191)
河南省高等学校重点科研项目(17A430021)
华北水利水电大学高层次人才科研启动基金(201705006)
华北水利水电大学大学生创新创业训练计划(2019XB005)。
关键词
激光技术
激光焊接
焊接速度
熔池动态行为
数值模拟
laser technique
laser welding
welding speed
dynamic behavior of molten pool
numerical simulation
