| 摘要 |
Process for the heat treatment of low-alloy steels at temperatures higher than 600 DEG C., such as annealing or heating before hardening, etc., said treatment being carried out in a protection atmosphere produced by the injection of nitrogen, hydrocarbon CxHy and optionally hydrogen, with a control of the atmosphere. According to the invention, the composition of the residual species CH4, CO, H2O, and the temperature of the gaseous mixture in the furnace are controlled in order to control the carburization and the decarburization of the treated steels. |
