Yankee Dryer Joint Corrosion: Cause, Prevention and Repair, 1994 Engineering Conference Proceedings
Richard L. Fearnside
This paper discusses the cause and prevention of Yankee dryer head failures relating to head/shell joint crevice corrosion. Utilizing detailed nonlinear finite element models, the general behavior of through bolted head-to-shell joints is presented. Emphasis is placed on the need to determine susceptibility to joint corrosion and how to measure its severity. General stress levels are calculated that result from applying actual field head tilt measurements to the computer models. Once the joint behavior is understood, options exist to remove the corrosion jacking deposit.