Abstract
The influence of carbide-forming metals on the wear of ceramic inserts in cutting hard-to-machine 12Х18Н9Т steel is studied theoretically. In addition, the influence of nitrogen on the yield point of the unmodified cutting ceramic and the alloyed ceramic is analyzed, and the influence of carbon and the temperature on the cutting ceramic’s limit of proportionality is determined. It is found that the impact strength of VOK-60M ceramic inserts is changed after diffusional hardening with nitrogen at pressure р = 025 MPa and temperature θ = 250°C. The ceramic inserts undergo X-ray spectral analysis so as to detect any changes in the lattice structure under the action of a magnetic field on saturation with nitrogen; the formation of floccules (of hair type b) in the section; or carbide deposits within the grains in the ceramic inserts.
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Translated by B. Gilbert
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Puchkin, V.N., Sumskaya, O.A., Geitsenreder, E.S. et al. Influence of Carbide-Forming Metals on the Wear Resistance of Ceramic Inserts in Cutting Hard Steel. Russ. Engin. Res. 41, 166–171 (2021). https://doi.org/10.3103/S1068798X21020167
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DOI: https://doi.org/10.3103/S1068798X21020167