Erosion

The velocity of flow through a heating coil may cause severe erosion in heater tubes and fittings if the velocity is critical or if direct impingement occurs. Often, the metal loss is aggravated by the corrosive nature of the process. Erosion in heater tubes is usually the result of velocity. Erosion in heater fittings usually results from a combination of impingement and velocity. If the charge rate on a heater is materially increased, the increased velocity may cause metal loss from erosion and corrosion.