Research of influence of steel 4X5МФС ion nitriding process parameters on characteristics of nitrided layer
2017
Bosyakov, M., National Academy of Sciences of Belarus, Minsk (Belarus). Inst. of Physics and Technology | Sakhanko, S., Baranovichi State Univ. (Belarus) | Niaroda, M., Baranovichi State Univ. (Belarus)
The aim of the present work is to study steel 4X5МФС ion nitriding process depending on the process variable – chemical activity of glow-discharge. Considering that this steel is preferably used in production of tools for processing of materials in hot condition, according to that the nitrided case should be fully diffusive, without the white layer of iron nitride on the surface. Special attention is paid in this article to the study of nitriding mode issues, in particular, to the processing temperature, nitrogen content in the gas mixture and processing time. As for today, the tendency to nitriding at low (400-550 ºС) temperatures is observed. Rational nitriding time is determined based on the required hardness and thickness of the nitrided layer. However, the difficulty in applying the ion-plasma nitriding method is due to the insufficient study of the workpiece surface saturation process, as well as to the lack of methods for selection of technological processing regimes. It should also be noted that due to the wide possibilities of regulating the ion-plasma nitriding regimes, further study of the ion-plasma nitriding technology is reasonable.
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