Abstract
According to increase of ultra-large containerships, the improvement of welding productivity and efficiency for thick plate welding become an important factor to reduce production time and costs. In the block assembly process at a shipbuilding yard or in a dock, manual welding or semi automatic welding that adopt small welding carriage is applied to the multi-layer weld. In this study, we had developed an automatic multi-layer welding system that full automatic welding is available for welding productivity and weld quality improvement. The system can weld automatically without additional welder's operation by using a touch sensor which can generate welding conditions based on the predefined weld database.
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