The machinability of the high-nitrogen corrosion-resistant austenitic steel 06Kh22AG15N8M2F during turning is studied. The
specific features of the structure of the surface layers in steel workpieces after turning are revealed. The cutting conditions
that provide the lowest wear of VK8 alloy cutting tools upon turning are found: the cutting speed is 21–74 m/min, the feed
is 0.15–0.60 mm/rev, and the cutting depth is 0.15–0.75 mm. The presence of a large amount of Cr
2N-type chromium nitrides in the structure of the steel annealed at 800°C for 2 h and a high nitrogen content in the austenite
of the steel quenched from 1100°C increase the wear of the cutting tools. As to turning of the forged steel, the wear resistance
of the cutting tools upon turning of the 06Kh22AG15N8M2F steel is higher than that upon turning of 08Kh18N10T steel, in which
deformation martensite forms (in surface layers) during turning.
PACS number 81.20.Wk
Original Russian Text © E.V. Blinov, V.M. Blinov, M.V. Kostina, O.A. Bannykh, 2008, published in Metally, 2008, No. 2, pp.
44–48.