Development of Cladding Process of Water-Cooled Boiler Panel and Example of Some Characteristics in Actual Machine

Abstract

In this paper, new maintenance method for cladding of water-cooled boiler panel is explained from viewpoints of safety and cost-effectiveness. This method comes from our basic maintenance philosophy which we call“Smart Welding^TM”for rebuilding. “Smart Welding”is registered trademark for rebuilding and means that every elemental technique concerned should be automated for speediness, safety and reliability.
Surface grinding and thickness measurement were herein automated with cladding process as new technological trial. It can be safely said that this maintenance method will be promising for cladding of worn-out surface of water-cooled boiler panel with some improvements. The cladding surface by this method is also shown in the actual machine (boiler) to be cost-effective in its characteristics, that is to say, corrosion resistance, erosion resistance and lifetime. From this result, it can be proposed that this maintenance method will be applied to worn-out surface of such boilers as ultra-super-critical pressure boiler, bio-mass boiler, waste-burning boiler, recovery boiler etc.