Current Welding Technology and Technical Problems for Boiler Materials and Fabrication in Japan

摘要

Recently, elevation of steam conditions and construction of coal-fired boilers have been in progress in thermal power plants, employing new boiler materials, while automation and robotization for welding have rapidly been advancing in boiler fabrication works in response to demands for improvements of welding quality and its cost curtailment under shortage of skilled workers in Japan.This paper presents the current situation and technical problems of welding technology for new high-strength materials which have already begun to be used for the boiler components of the highest service temperature in boiler structures and discusses the present situation and expected future course of automation and robotization for welding in fabrication processes of boilers.