Failure analysis of the outside coating on the process roller

Failures analysis of tube coating in Circulating Fluidized Bed (CFB) boiler

“…Most tube coating failures are caused by insufficient surface preparation [ 9 , 10 ], which then causes failure in the bonding of the coating to the substrate. Other common causes of failure are inappropriate temperature and thickness during coating, excessive moisture, and improper mixing of components [ 11 , 12 ]. Exhaust gas and ash particles are the cause of deposition on the surface of the tube, which reduces heat transfer and corrosion [ [13] , [14] , [15] ].…”