On the issue of using nitrocarburizing for surface hardening of parts made of 30KhGS steel
https://doi.org/10.21869/2223-1528-2025-15-2-34-44
Abstract
Purpose. Study of the elemental and phase compositions, as well as the microhardness of the surface of the cutter body of the KZTS A6/20 road milling machine made of 30KhGS steel, in order to use nitrocarburizing for its surface hardening.
Methods. Modern methods and equipment were used to achieve the set goal. Using the X-ray analyzer built into the Quanta 600 FEG scanning electron microscope, X-ray spectra were determined at specific points on the sample surface. The phase composition of the sample was studied by X-ray diffraction on a Rigaku Ultima IV diffractometer in Cu-Kα radiation using Soller slits using the ICCD PDF-2 DB (2014). The diffraction maxima were described using a superposition of the Gaussian function and the Lorentz function. Using the DM-8 automatic microhardness analysis system using the micro-Vickers method, the microhardness of the samples was studied by transverse section.
Results. The following were obtained as a result of the study: an X-ray diffraction pattern of the elemental composition of the cutter body of the KZTS A6/20 road milling machine, showing that the ratio of the elements corresponds to the composition of alloyed structural steel 30KhGS; a diffraction pattern showing the crystalline phases of α-Fe and Fe2O3 with different sizes of crystallites, as well as data on the position and interplanar distances of all reflections. The microhardness of the sample surface was determined: HV0.01 = 437.6.
Conclusion. The completed study will allow the development of recommendations for the practical application of chemical-thermal treatment methods, by means of which it is possible to carry out surface hardening of parts made of 30KhGS steel, in particular the body of a road milling cutter.
About the Author
K. Yu. Kuznetsov
Southwest State University
Russian Federation
Russian Federation
Konstantin Yu. Kuznetsov, Postgraduate Student
50 let Oktyabrya Str. 94, Kursk 305040
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For citations:
Kuznetsov K.Yu. On the issue of using nitrocarburizing for surface hardening of parts made of 30KhGS steel. Proceedings of the Southwest State University. Series: Engineering and Technology. 2025;15(2):34-44. (In Russ.) https://doi.org/10.21869/2223-1528-2025-15-2-34-44
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