Ecm Technologies

Bnp Parlbas

L'air Liquide, Soci&#xe9;t&#xe9; Anonyme Pour L'etude Et L'exploitation Des Proc&#xe9;d&#xe9;s Georges Claude

Etudes Et Constructions Mecaniques

Aymeric Goldsteinas

Jean Berlier

Xavier Doussot

Laurent Pelissier

Florent Chaffotte

Didier Domergue

A method for carbonitriding a steel part arranged in an enclosure maintained at a reduced internal pressure, the part being maintained at a temperature level, comprising an alternation of first and second steps, a carburizing gas being injected into the enclosure during the first steps only and a nitriding gas being injected into the enclosure only during at least part of at least two second steps.

Low pressure carbonitriding method and device

The invention relates to a low-pressure carburising method comprising alternating low-pressure enrichment steps and diffusion steps in the presence of a neutral gas. During the enrichment steps, an enriching gas and neutral gas mixture is used, the proportion of the neutral gas being between 5 and 50% by volume of the enriching gas. The enriching gas can be, for example, acetylene (CH).

Low-pressure cementation method

Growing community of inventors

Voreppe, France

Aymeric Goldsteinas