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AC10.1 HVOF Coating Case Study for Power Plant Process Control Ball Valve Applications

Thursday, May 24, 2012: 8:00 AM
Room 336 AB (Hilton Americas Houston )
Mr. Luc Vernhes , Velan, Montréal, QC, Canada
Mr. David Lee , Deloro Stellite, Goshen, IN
Dr. Dominique Poirier , National Research Council of Canada, Boucherville, QC, Canada
Dr. Duanjie Li , Ecole Polytechnique, Montreal, QC, Canada
Dr. Jolanta E. Klemberg-Sapieha , Ecole Polytechnique, Montreal, QC, Canada
HVOF Coating Case Study for Power Plant

Process Control Ball Valve Application

 

Author: Luc Vernhes

Company:  Securaseal Valves, Velan

 

Author:  David Lee

Company: Deloro Stellite Co. Inc.

 

Abstract:   This case study is result of an investigation of HVOF Cr3C2/NiCr coating failure on a on-off  valve used in supercritical steam line in a power plant in Texas and solution.  The HVOF coating is used in thousands of valves without incident, however in this case the valve is challenged with exposure to rapid high pressure and temperature resulting in unique situation where the coating experiences cracking and delamination.  A detailed investigation was undertaken by Velan, Deloro Stellite, Université of Montreal and National Research Council of Canada to determine possible cause and develop a solution in which highlights are presented.

See more of: General Session II
See more of: Applications and Case Study