METHOD FOR PRODUCING HARDENED WORKPIECES FROM NON-MAGNETIC CORROSION-RESISTANT AUSTENITIC STEEL Russian patent published in 2022 - IPC C21D1/02 C21D8/06 B21J5/00 

FIELD: metallurgy.

SUBSTANCE: invention relates to metallurgy, and in particular to methods for producing blanks and their heat treatment from non-magnetic corrosion-resistant austenitic steels, and can be used in engineering, energy, chemical and other industries that are consumers of non-magnetic corrosion-resistant austenitic steels with a combination of high strength and ductility. A method for producing bars from non-magnetic stainless austenitic steels, including preliminary hardening of bar blanks from a temperature of 1050°C, cold plastic deformation of hardened bar blanks to obtain bars, subsequent heat treatment to obtain a gradient structure of bars and cooling in air. Bar blanks made of steel 08Kh17N13M2T are subjected to processing, cold plastic deformation of hardened bar blanks is carried out at room temperature by radial forging with a degree of deformation of 90-95%, providing a given diameter of the bars, heat treatment is carried out by accelerated heating of the bars in an air atmosphere furnace to a temperature of 600- 700°C and exposure for 1-2 hours.

EFFECT: bars with a gradient structure are characterized by high plasticity, low magnetic permeability and a high level of strength characteristics.

1 cl, 3 dwg, 1 tbl, 6 ex