The loop circuit controlling of current, voltage and speed of welding can be realized in welding process.
在焊接过程中，对电弧电压、焊接电流、焊接速度实现闭环控制。
In the welding of bellow, the quality and speed of welding are affected by the skill and emotion of workers. For sake of this, the paper proposed an automatic welding-machine for bellow.
针对波纹管与焊接管手工焊接过程中，焊接质量和焊接速度受操作人员的技术水平和工作情绪影响较大的问题，研制开发了一种自动焊接系统。
It showed that the weld cross section with both laser welding processes transformed from nail shape to near X shape with increase of laser power and decrease of welding speed.
结果表明，随激光功率增大和焊接速度降低，复合焊与单一激光焊焊缝的横截面形貌均由钉形向近X形转变。
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