駆動ベルト金属リング構成部材の製造方法のための熱処理プロセス

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) wherein the ring (14) is processed at a temperature of several hundred °C in an ammonia containing atmosphere, in which process step the heat treatments of ageing and nitriding the material of the ring (14) are combined. According to the invention the temperature of the process gas atmosphere gradually decreases and/or the concentration of the ammonia in the process gas gradually increases in such combined process.