Open AccessCutting tools hardening and sharpening by fast argon and nitrogen atoms
Author(s) -
Alexander Metel,
H. A. Nay,
Enver Mustafaev
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/709/2/022049
Subject(s) - reamer , sharpening , materials science , plasma , argon , nitrogen , indentation hardness , ion , enhanced data rates for gsm evolution , atomic physics , optics , composite material , metallurgy , chemistry , physics , mechanical engineering , engineering , microstructure , organic chemistry , quantum mechanics , telecommunications
A reamer made of AISI M2 high-speed steel was heated by ions accelerated from the plasma by a bias voltage applied to it and kept at 500°C for 120 min. Microhardness of the reamer surface increased by 1.75 times and the nitride layer thickness reached 130 μm. Nevertheless, radii of the cutting edges increased by 5 times up to ~ 40 μm, which made the tool blunt. Another reamer was heated by a converging beam of fast atoms produced by an immersed in the same plasma concave grid under a negative voltage of 5 kV. Due to uniform removal of the reamer material by the beam, the radii of cutting edges decreased from the initial value ~ 8 μm down to ~ 6 μm.