VACUUM CARBONITRIDING

Carbonitriding is a process under vacuum which reveals the full potential of this technology in terms of fatigue strength improvements. Compared to traditional carbonitriding and oil quenching, the same tests performed on parts using low-pressure carbonitriding followed by gas quenching show great improvement to tooth root fatigue and overall greater fatigue strengths.

It is a thermal process of simultaneously diffusing both carbon and nitrogen into ferrous alloys under partial pressure. This leads to an extremely hard and wear resistant surface. Vacuum carbonitriding is a significant improvement over conventional gas carbonitriding. The process contains all of the inherent benefits of vacuum carburizing, but also has the additional benefit of precise computer control of surface ammonia content. Furthermore, this process does not require any additional refractory burn-outs so not only is the end product of higher quality, but it is often less expensive than with competing conventional gas processes.