Recent Progress in Coating Developments for Power, Oil & Gas, and Mining
Recent Progress in Coating Developments for Power, Oil & Gas, and Mining
Thursday, May 27, 2021: 9:15 AM
Valve components are hardfaced to reduce friction, wear and corrosion thus enhancing their in-service life. This presentation will focus on three main challenges and provide the current developments:
Power
Materials are the key to develop advanced processes operating at temperature up to 760°C and sustained pressure up to 4500 psi. Stellite 6 is the benchmark hardfacing. However, the latest results tend to indicate that it is not suitable above 600°C. An alternative hardfacing will be required for A-USC. New Ni- and Co- based alloys are being developed for use at temperature of 800°C.
We present the methodology developed to explore the effects of elevated temperature on the tribological behavior.
Power
Materials are the key to develop advanced processes operating at temperature up to 760°C and sustained pressure up to 4500 psi. Stellite 6 is the benchmark hardfacing. However, the latest results tend to indicate that it is not suitable above 600°C. An alternative hardfacing will be required for A-USC. New Ni- and Co- based alloys are being developed for use at temperature of 800°C.
We present the methodology developed to explore the effects of elevated temperature on the tribological behavior.
Oil & Gas
We present the methodology that has been developed to explore the effects of coking and sulfidation corrosion on the tribological behavior, with the goal of developing a wear-resistant surface treatment, to prevent scale and coke build-up caused by different classes of heavy oil, including in Coker and Ebullated Bed applications.
Mining
The thermal sprayed ceramic coatings have enhanced the life span of in-service equipment in hydrometallurgy. The most recent advancements in ceramic and metallurgically bonded hardfacing solutions suitable for the operating conditions of the valves are presented.