DETECTION AND ANALYSIS OF WELD POOL SHAPE FOR CO_2 SHORT CIRCUITING ARC WELDING  

作　　者：Sun Zhenguo,Wang Junbo,Chen Qiang,Kong Wende (Department of Mechanical Engineering, Qinghua University) 

出　　处：《Chinese Journal of Mechanical Engineering》2001年第3期282-285,共4页中国机械工程学报（英文版）

基　　金：This project is supported by National 863 project( No.412-9913-02)and National Natural Science Foundation of China(No.599750

摘　　要：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 (b, which describe the curves of weld pool boundany) ,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.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 (b, which describe the curves of weld pool boundany) ,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.

关 键 词：ICCD camera Pool image CO2 short circuiting arc welding 

分 类 号：TG444[金属学及工艺—焊接]