Abstract: This paper presents the
measurement of the electron density of laser, TIG welding arc,
and laser + TIG welding arc plasma by the method of Stark
Broadened Linewidth. The reason why electric arc enhances laser
welding is that the electric arc can dilute the electron density
of laser plasma, weaken the ability of laser plasma to absorb
and reflect the laser energy, and improve the hot-working
efficiency of laser beams. Experiments prove that the combined
action of arc and laser beams can obviously improve the weld
penetration in welding.
Key words:
Arc augmented laser welding Mechanism Welding penetration
Manuscript received on March 16, 1991; revised manuscript
September 2, 1991
|