High reliability is required for welding of nuclear equipment, and even in mechanized welding, skilled welding operators are operating. On the other hand, the number of workers in the manufacturing industry is decreasing, and it is necessary to develop technology to reduce the degree of skill dependence. In order to solve this problem, two welding techniques which enable high quality welding equivalent to that of skilled welding operators even if the experience is small were developed by incorporating AI technology which is remarkable in recent progress into the automatic welding which has been developed until now, and applied to the actual work. Since this technology contributes to productivity improvement as well as reliability improvement, further development and application expansion of this technology will be promoted.
