HEAT TREATMENT PROCESS FOR A DRIVE BELT METAL RING COMPONENT

摘要

The invention provides for a heat treatment process in a manufacturing method for a metal ring (14) for use in a drive belt (1) at least comprising a process step (VIII-O) of oxidising the ring (14) in an oxygen containing atmosphere and a subsequent process step (VIII-N) of nitriding the ring (14) in an ammonia containing atmosphere, which process step (VIII-O) of oxidising the ring (14) the oxygen containing atmosphere is performed at a temperature of more than 450 °C and/or for minutes or more.