Rotary fluid bearing coatings and coining and processes for manufacturing the same
摘要:
A protective coating is applied to an inner or an outer member of a rotary fluid bearing by sputtering to minimize scuffing, wear and premature failure of the members during starts and stops of the bearing. The coating may include titanium, tungsten, chromium, amorphous carbon with or without metallic impurities, and hydrogenated amorphous carbon with or without metallic impurities. One of the members is formed in two sections to accommodate assembly of the bearing and these sections abut at end faces. Features on each end face are imparted to the other end face in a compression coining process to facilitate rapid and repeatable alignment of the two sections when separated and rejoined during subsequent manufacturing steps.
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