Product Code: ICAL09_702

The Influence of Parameters on Characteristic of the Molten Pool During Laser Welding of TA15
Authors:
Aiqin Duan, Bamtri; Beijing Peoples Republic of China
Chen Li, BAMTRI; - Peoples Republic of China
Presented at ICALEO 2009

In this paper, the characteristics of molten pool and moving behavior during laser welding of TA15 have been studied through measuring of images. The results show that a molten pool can be roughly divided into three areas: (a)vapor/plasma area ,which fluctuates at frequency of more than 1kHz. (b) liquid area , which temperature is more than 2000K.(c) liquid-solid area ,which is main part of the pool and has small temperature gradient. The further study shows that some parameters, such as heat input and welding speed, have certain relationship with characteristic of molten pool. According to the equation achieved, the welding process can precisely be predicted and controlled during actual laser welding.