Air management system for an aircraft with hardface coating on wear surface of a valve

摘要

A disclosed method of hard coating a wear surface (34;70) of a valve of an aircraft air management system (12) is performed by depositing a hardface alloy powder (42) onto the wear surface (34;70), heating the wear surface (34;70) and the hardface alloy powder (42) to transform the hardface alloy powder (42) into a molten liquid mass (46), and subsequently cooling the molten liquid hardface alloy mass (46) to solidify the hardface alloy (48;64) onto the wear surface (34;70). The disclosed process provides for localized application and subsequent bonding of the hardface alloy (48;64) to discrete portions of the wear surface (34;70). The solidified hardface alloy coating (38) may then be machined to obtain specific wear surface geometries.