LOW PRESSURE CARBONITRIDING METHOD AND DEVICE

摘要

The invention relates to a method for carbonitriding a steel part placed in an enclosure (14) held at a low internal pressure wherein the steel part is held within a temperature range. The inventive method consists in alternating first and second stages, in injecting a cementing gas into the enclosure only during the first stages and in injecting a nitriding gas into the enclosure during at least one part of at least two second stages.