12 September 2002 Gap-detecting sensor and wire feed control in butt laser welding with filler wire
Author Affiliations +
Abstract
To guarantee good quality of butt laser welding with filler wire, a sensor, that is used to detect gap width and seam tracking and a wire feeding system have been developed in this paper. The sensor contains a laser diode as assistant optical source and a photoelectric cell as receiving component. A step-motor drives the sensor transversally scanning above the work piece so as to detect the gap width as basis of adjusting welding parameters and the center position of the butt gap as benchmark of seam tracking. A computer calculates the required wire feeding speed and welding speed according to the gap width and transfers these values to wire feeding system and speed adjusting system. In the welding of 2mm-thick low carbon steel sheet, the wire feeding speed and welding speed are respectively changed according to gap width detection and weld bead appearance is analyzed. The results show that it is better to adjust wire feeding speed for narrower gap and adjust welding speed for wider gap. According to the detected signal of the sensor, the appearance quality of the total weld could be guaranteed by choosing wire feeding speed or welding speed as the control variable for different gap widths.
© (2002) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Wuzhu Chen, Wuzhu Chen, Chun Liu, Chun Liu, Wenguang Yang, Wenguang Yang, Xudong Zhang, Xudong Zhang, } "Gap-detecting sensor and wire feed control in butt laser welding with filler wire", Proc. SPIE 4915, Lasers in Material Processing and Manufacturing, (12 September 2002); doi: 10.1117/12.482888; https://doi.org/10.1117/12.482888
PROCEEDINGS
10 PAGES


SHARE
RELATED CONTENT

Process Control During Laser Machining
Proceedings of SPIE (March 23 1989)
The research of PSD location method in micro laser welding...
Proceedings of SPIE (November 09 2010)
A status update of the VLTI control system
Proceedings of SPIE (September 14 2004)
Control of transient processes during CO2-laser beam welding
Proceedings of SPIE (September 06 1994)

Back to Top