| 摘要 |
<p>A tone ring (20) of a vehicle anti-lock braking system of the type that is integratedinto a disc brake rotor (21). The tone ring has a protective layer which enablesit to withstand the combination of extreme heat and harsh environmental conditionsto which it is exposed during operation of the vehicle. The protective layer isapplied by thermally spraying a selected one of a plurality of materials, suchas a nickel-based alloy, a high-chrome stainless steel, or non-ferrous materialssuch as an aluminum, copper-based alloys or a ceramic, on teeth (22) of the tonering, and without causing the protective layer to be deposited on the rotor brakingsurfaces. The protective layer generally prevents the formation of oxidationand corrosion byproduct layers on the teeth, to thereby maintain sensitivityfor detection of teeth movement by the anti-lock braking system sensor duringoperation of the system.</p> |
