5083铝合金窄间隙MIG焊工艺研究

发布时间：2018-04-16 16:30

  本文选题：窄间隙焊接 + 熔化极惰性气体保护焊　； 参考：《热加工工艺》2017年23期

【摘要】：对5083铝合金进行了窄间隙MIG焊接试验,采用正交试验得出各焊接参数对焊缝侧壁熔深的影响,通过单因素试验得到合适的预热温度。结果显示,焊接电流和焊接速度对焊缝侧壁熔深影响较大,焊接电压对焊缝侧壁熔深影响较小。随着焊接电流的增加,侧壁熔深增加;随着焊接速度的减小,侧壁熔深增加。预热使熔池向母材的散热速度变慢,散失的热量下降,有效增加侧壁熔深。较合适的焊接参数为焊接电流225 A,焊接速度4 mm/s,预热温度200℃。
[Abstract]:The narrow gap MIG welding test of 5083 aluminum alloy was carried out. The influence of welding parameters on the penetration depth of weld side wall was obtained by orthogonal test, and the appropriate preheating temperature was obtained by single factor test.The results show that welding current and welding speed have great influence on weld side wall penetration, while welding voltage has little effect on weld side wall penetration.With the increase of welding current, the penetration depth of side wall increases, and with the decrease of welding speed, the penetration depth of side wall increases.Preheating slows the heat dissipation of the pool to the base metal, decreases the heat loss, and effectively increases the penetration depth of the side wall.The suitable welding parameters are welding current 225A, welding speed 4 mm / s, preheating temperature 200 鈩，

本文编号：1759748