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Abstract: Through studying on the key technique of high efficient
automatic welding for large scale spherical steel tanks, an automatic
tracking system with CCD photo-detectors is developed to solve the
problem of tracing multi-layer or multi-pass seams on real-time and an
all-position welding carriage without rail, which can walk on the
surface of spherical tanks, is created by using a flexible magnetic
wheel mechanism. Moreover, the all-position welding technology is
investigated with CO2 shielded flux cored arc welding (FCAW). Based on
the above research work, an all-position welding robot with 5 degrees of
freedom is developed to improve the automatic welding efficiency and
quality of spherical tanks.
Key words: Spherical tank Automatic welding High efficient welding
Welding robot
CLC No: TG441.4
国家863高技术计划基金资助项目(563-512-9913-02). Received 20021230, received in
revised form 20030306
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