The edge milling process is widely used for manufacture of SSAW pipes. However, in case that proper control is not ensured, defects like welding misalignment or non-through-welding may be caused.
铣边工艺被广泛用于螺旋缝埋弧焊管生产，但控制不好会导致焊管出现焊偏、未焊透等缺陷。
2
It transmits a laser beam through an optical cable to a robot, which angles lenses and mirrors in the end of its arm to aim the laser towards the parts that need welding.
它通过光导电缆发射激光给机器人，机器人用它手臂末端的角度透镜和镜子对准激光点焊接。
3
Lasers similar to those used for welding in car factories would be fired through telescopes to 'nudge' piles of rubbish left in orbit.