| 摘要 |
The present invention relates to improvements in processes for treatment of steel under a controlled atmosphere. Use is made of an atmosphere formed by a carrier gas comprising or containing industrially pure nitrogen and by an active gas formed by a hydrocarbon such as: CH4, C4H10, C3H8, C2H4, C2H2, C2H6, and by carbon monoxide fed in under the form of pure gas or obtained by decomposition of methanol, the treatment being performed between 750 DEG and 1150 DEG C. The invention is applicable to heating prior to hardening, to annealing, to carburization and to carbo-nitriding of steels. |
