Mathematical Modelling the Low-Pressure Nitriding Process

Abstract:

This paper discusses the issues of modelling and smart computer support for low-pressure nitriding aimed at achieving more effectively the compatibility between the actual post-treatment properties of a material and the designed properties, which will contribute to improved repeatability of the processes. The principal objective of the experiment was to acquire better understanding of the cause and effect relationship of the low-pressure nitriding processes and to develop the methodology of designing functional and effective processes of low-pressure thermochemical treatment, using effective computational methods. The paper proposes a method of steel classification based on its chemical composition and a model used to forecast the properties of material after low-pressure nitriding, based on the artificial neural networks.

• Periodical: Applied Mechanics and Materials (Volume 421)
• Pages: 377-383
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.421.377
• Online since: September 2013
• Authors: Emilia Wolowiec, Piotr Kula, Bartłomiej Januszewicz, Maciej Korecki
• Keywords: FineLPN, Heat Treatment, Low-Pressure Nitriding, Neural Network (NN), Tool Steels, Vacuum Nitriding

References

[1] J. Dobrodziej, J. Wojutyński, K. Matecki, A. Gospodarczyk, J. Michalski, J. Tacikowski, P. Wach, J. Ratajski, R. Olik: Inżynieria Powierzchni Vol. 2 (2009), pp.34-44.

[2] P. Kula, R. Pietrasik, K. Dybowski, R. Atraszkiewicz, E. Wolowiec, M. Korecki, J. Olejnik: New technological pathways for universal vacuum furnaces, Proc. 18th IFHTSE – International Federation for Heat Treatment and Surface Engineering, Rio de Janeiro, Brazil (2010).

[3] M. Korecki, J. Olejnik, P. Kula, R. Pietrasik, E. Wolowiec: Tratamientos termicos Vol. 132 (2012), pp.17-23.

[4] P. Kula, R. Pietrasik, E. Wolowiec, B. Januszewicz, A. Rzepkowski: Materials Advanced Research Vol. 586 (2012), pp.230-234.

[5] P. Kula, E. Wolowiec, R. Pietrasik, K. Dybowski, B. Januszewicz: Vacuum Vol. 88 (2013), pp.1-7.

DOI: 10.1016/j.vacuum.2012.08.001

[6] M. Korecki, P. Kula, J. Olejnik: Industrial Heating Vol. 3 (2011).

[7] M. Korecki, J. Olejnik, M. Bazel, P. Kula, R. Pietrasik, E. Wolowiec: Multi-purpose LPC+LPN+HPGQ 25 bar N2/He single chamber vacuum furnaces, Proc. 3rd International Conference on Heat Treatment and Surface Engineering of Tools and Dies, Wels, Austria (2011).

[8] P. Kula, M. Korecki, J. Olejnik, R. Pietrasik, E. Wolowiec: Low pressure nitriding - FineLPN – the new option for LPC + HPGQ vacuum furnaces, Proc. Furnaces of North America, Orlando, Florida (2010).

[9] M. Korecki, J. Olejnik, P. Kula, R. Pietrasik, E. Wolowiec, Multi-purpose LPC+LPN+HPGQ 25 bar N2/He single chamber vacuum furnaces, Proc. ASM 2011 Heat Treating Society Conference and Exposition, Cincinnati, Ohio (2011), pp.309-314.

[10] L. Maldziński: Thermodynamic, kinetic and technological aspects of producing nitrided layers on iron and steel in processes of gas nitriding (Poznan University of Technology, Poland 2002).

[11] J. Ratajski: Some aspects of modern gas nitriding for process control (Koszalin University of Technology, Poland 2003).

[12] J. Ratajski: Mathematical modeling of the gas nitriding process (Koszalin University of Technology, Poland 2011).

[13] P. Kula: Surface layer engineering (Lodz Technical University, Poland 2000).

[14] L. A. Dobrzanski, E. Hajduczek, J. Marciniak, R. Nowosielski: Metallurgy and heat treatment of tool materials (WNT, Poland 1990).