摆动工艺参数对铝合金激光焊焊接质量的影响
Effect of oscillating parameters on laser welding quality of aluminum alloy
王健强 1贾正 1邢健 1李家曙1
作者信息
- 1. 合肥工业大学机械工程学院,安徽合肥 230009
- 折叠
摘要
为了研究铝合金激光焊接过程中摆动参数对焊接结果的影响,文章采用单因素的变量试验,在其他参数固定为功率4 kW、焊接速度80 mm/s、离焦量0的情况下,分别分析激光摆动频率、摆动幅度等参数对2 mm厚的6k21和5754铝合金薄板焊缝成型、焊接质量的影响.试验结果表明:随着摆动幅度的增加,焊缝熔深减小,熔宽先增加后减小;随着摆动频率的增加,熔深、熔宽均减小;在焊缝没有焊接缺陷的情况下,试件的剪切力与熔宽成正相关.文章研究结果可为汽车轻量化全铝车身连接中的激光焊接工艺提供一定的理论参考.
Abstract
In order to study the influence of oscillating parameters on welding quality during laser weld-ing of aluminum alloy,a single factor variable experiment was adopted in this paper,and under the conditions of 4 kW power,80 mm/s welding speed and 0 defocus,the effects of laser oscillating fre-quency and oscillating amplitude on weld forming and welding quality of 2-mm-thick 6k21 and 5754 a-luminum alloy sheet were analyzed.The experimental results show that with the increase of oscilla-ting amplitude,the weld penetration depth decreased,and the weld width increased first and then de-creased.With the increase of oscillating frequency,the weld penetration depth and width decreased.In the absence of welding defects,the shear strength of the specimen was positively correlated with the weld width.The research results can provide theoretical reference for laser welding process of au-tomotive lightweight all-aluminum body connection.
关键词
激光焊/摆动焊接/铝合金/控制变量法Key words
laser welding/oscillating welding/aluminum alloy/control variable method引用本文复制引用
基金项目
安徽省科技重大专项(202103a05020024)
出版年
2024
NETL
NSTL
万方数据