【摘要】 为了提高激光-电弧复合焊接质量,提出了一种新的焊接方法——旋转双焦点激光-TIG(Tungsten InertGas)复合焊接.运用自行研制的旋转双焦点激光-TIG复合焊接头对304不锈钢进行了不同焊接参数下的工艺试验,并分析了焊接参数对焊缝成形的影响.结果表明在旋转双焦点激光-TIG复合焊接过程中,焊接电流和激光功率的大小和相互配合是2个热源能否有效耦合的关键因素,而旋转频率的大小对焊缝的熔深、熔宽影响不大,通过旋转双焦点激光和电弧的耦合作用可以有效地提高焊接热源的利用率.更多还原

【Abstract】 In order to improve the laser-arc hybrid welding quality,the rotary-twin-focus laser-TIG(tungsten inert gas) hybrid welding was put forward,which is a new welding method that can improve the welding efficiency at the same time.With the rotary-twin-focus laser-TIG hybrid welding head designed by Beijing University of Aeronautics and Astronautics,a detailed experiment of rotary-twin-focus laser-TIG hybrid welding with different welding parameters was carried out on the 304 stainless steel plate,and the weld parameters infection for the weld appearance quality was analyzed concretely.The results indicate that the coupling effect of laser power and the welding current intensity are the main factors for efficient synergetic effect in rotary-twin-focus laser-TIG hybrid welding process;however the rotary-twin-focus laser rotary frequency has unapparent effect on the weld width and penetration.Compared with the laser welding and the TIG welding process,rotary-twin-focus laser-TIG hybrid welding with the rotary-twin-focus laser and arc efficient synergetic effect increases the welding heat sources efficiency effectively.更多还原