Abstract: A general industrial CCD (ICCD) camera is redesigned to detect the
weld pool without arc at the period of short circuiting, so that
the interference of arc and spatter during CO2 short circuiting
arc welding is eliminated. Through the analysis of weld pool
image, both size parameters (such as weld pool area A ,weld pool
length L1,L2 and weld pool breadth b) and contour parameters (bi
which describe the curves of weld pool boundary), which could
indicate the shape features of weld pool, had been defined to
express weld pool information quantitatively. The investigation
of the relationships between weld pool shape parameters and
welding process parameters may be beneficial to the quality
control of CO2 welding.
Key words: ICCD camera Pool image CO2 short
circuiting arc welding
*
This project
is supported by National 863 project (No.412-9913-02) and National Natural Science
Foundation of China (No.59975050). Selected from Proceedings of 2000 the
First International Conference on Mechanical Engineering; revised manuscript
April 20, 2001
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