Efficiency of the strain hardening of the rose steels

The process of strain hardening of the thermally stable steels used for the highly loaded gears, is considered. It is shown that a positive influence of the shot-blasting is shown when the rose layer is not supersaturated in carbon, when the excess ferric carbide has not a large volumetric fraction, and its particles are distributed uniformly. A successful structure and phase composition of the diffusion layer prior to the shot-blasting can be provided by ionic carburizing and carbonitriding.