FIELD: metallurgy.
SUBSTANCE: procedure includes stage of ejection of particles on surface of metal. Average dimension of particles is not over 200 mcm, pressure of air at shot blasting is not less, than 0.1 MPa and not over 1 MPa, while ratio of arithmetical mean roughness of surface of metal upon a stage of ejection to arithmetical mean roughness of surface of metal material before the stage of ejection is not less, than 0.8 and not over 1.5.
EFFECT: improved fatigue properties of metal without change of surface roughness.
4 cl, 7 dwg, 2 tbl, 5 ex
