| 摘要 |
The invention relates to a method for the simultaneous precipitation hardening and (gas soft) nitriding of an endless flexible ring (32) made from maraging steel to be used as or in a drive belt (3) for a continuously variable transmission. The ring (32) comprises between 0.5 and 2.5 mass-% chromium and the simultaneous precipitation hardening and nitriding is carried out at a temperature of 500 degrees centigrade or more. After simultaneous precipitation hardening and nitriding, the ring (32) is provided with a nitrided surface layer of the ring (32) comprising chromium nitride precipitates. |
