摘要
为了更好理解搅拌摩擦焊接(FSW)过程和合理选择焊接工艺参数,本文尝试将焊接工艺参数与响应参数相联系,利用FLUENT软件建立了FSW过程的热流分析模型,分析了搅拌头旋转速度和焊接速度发生变化时,峰值温度和纵向力的变化趋势。结果表明:随着搅拌头旋转速度的增大,峰值温度上升,纵向力减小,但旋转速度达到600r/min后,两者均不发生太大变化;随着焊接速度的增大,峰值温度变化没有明显规律,且其变动范围较小,但纵向力线性上升。研究结果可为铝合金FSW工艺参数的选择提供依据。
In order to understand FSW process and reasonable selection of process parameters, an attempt was made to link friction stir welding process and response variables. A thermal and fluid analysis model of fiiction stir welding was built, and the trend of peak temperature and longitudinal force was analyzed with rotating speed and the welding speed changing. The results show that： when the rotating speed is small, with the increase of rotation speed, the peak temperature increases more significantly, but after e rotation speed increasing to 600 r/min, the peak temperature is stable; but with the increase of rotation speed, the longitudinal force decreases gradually, and the curve tends to be gentle. Welding speed rising has little effects on the peak temperature, but the longitudinal force rises linearly with it. The results can provide the basis for the reasonable selection of friction stir welding process parameters of aluminum alloy.
出处
《热加工工艺》
CSCD
北大核心
2014年第11期151-154,共4页
Hot Working Technology
基金
"十二五"国家科技支撑计划资助项目(2011BAD20B10)
山东省现代农业产业技术体系棉花产业创新团队资助项目(SDAIT-07)
关键词
旋转速度
焊接速度
峰值温度
纵向力
rotating speed
welding speed
peak temperature
longitudinal force
