摘要
采用光纤式光谱仪,对激光—双丝脉冲MIG复合焊接电弧等离子体辐射规律进行探讨,结合焊接过程中的高速摄像图片探讨激光与电弧的耦合机理,并运用Boltzmann图法计算出电弧等离子体的电子温度。结果表明,加入激光后,电弧的亮度提高,辐射增强,电弧偏向激光作用位置,同时电弧收紧,电弧截面减小,电弧稳定性增强;激光功率、焊接电流和焊丝间距对电弧等离子体温度有比较大的影响,随着激光功率的增加、焊接电流增大和焊丝间距的减小,电弧等离子体电子温度升高。
The plasma radiation of laser-double wire hybrid welding was collected by using fiber spectrometer,the coupling mechanism of arc with laser was studied through high-speed photography during welding process,and the temperature of hybrid plasma was calculated by using the method of Boltzmann plot.The results indicated that with laser hybrid,luminance was enhanced;radiation intensity became stronger;arc was attracted to the laser point;cross section contracted and arc was more stable.The laser power,welding current and arc-arc distance are important factors that have great influence on electron temperature.Increase in the laser power,amplification of welding current and reduction of arc-arc distance can all result in the rise of temperature.
出处
《光谱学与光谱分析》
SCIE
EI
CAS
CSCD
北大核心
2013年第4期890-894,共5页
Spectroscopy and Spectral Analysis
基金
国家自然科学基金项目(51175374)
天津市科技支撑计划重点项目(10ZCKFSF00200)
天津市应用基础及前沿技术研究计划项目(09JCYBJC05000)资助
