New method of nitrocarburizing of X37CrMoV5-1 hot working tool steel in chemically active fluidized bed

• Autorzy: Ciski A. , Babul T. , Lankiewicz K. , Obuchowicz Z. , Šuchmann P.
• Języki publikacji: EN

Abstrakty

EN

Purpose: This paper presents a new method of nitrocarburizing in chemically active powders fluidized by mechanical vibrations. Design/methodology/approach: The research in the field of microstructure (light microscopy), hardness, wear resistance and impact strength was carried out on specimens made of X37CrMoV5-1 alloy tool steel subjected to nitrocarburizing at a temperature 560°C with thermo-chemical treatment time 4 and 8 hours. Findings: The obtained results were related to the steel subjected to conventional heat treatment consisting of quenching and tempering. Conducted nitrocarburizing processes enabled the formation of layers with parameters similar to the layers obtained using other nitrocarburizing techniques, such as box methods in chemically active powders or in gaseous atmospheres. Practical implications: As a result of nitrocarburizing strengthened steel had significantly higher hardness and wear resistance than the material subjected to conventional quenching and tempering. Originality/value: Obtained diffusion layers confirmed the possibility of the practical use of studied fluidized bed nitrocarburizing technology for thermo-chemical treatment especially for tools designed for plastics processing.

Słowa kluczowe

EN

nitrocarburizing; fluidized bed; chemically active powder

PL

węgloazotowanie; złoże fluidalne; proszek chemicznie aktywny

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2014
• Tom: Vol. 62, nr 2
• Strony: 81--87
• Opis fizyczny: Bibliogr. 11 poz., rys., tab.

Twórcy

autor

Ciski A.

• Institute of Precision Mechanics, ul. Duchnicka 3, 01-796 Warsaw, Poland

autor

Babul T.

• Institute of Precision Mechanics, ul. Duchnicka 3, 01-796 Warsaw, Poland

autor

Lankiewicz K.

• Institute of Precision Mechanics, ul. Duchnicka 3, 01-796 Warsaw, Poland

autor

Obuchowicz Z.

• Institute of Precision Mechanics, ul. Duchnicka 3, 01-796 Warsaw, Poland

autor

Šuchmann P.

• COMTES FHT a.s., Dobřany, Czech Republic

Bibliografia

• [1] A. Celik, M. Karakan, A. Alsaran, I. Efeoglu, The investigation of structural, mechanical and tribological properties of plasma nitrocarburized AISI 1020 steel, Surface and Coatings Technology 200 (2005) 1926-1932.
• [2] L.F. Zagonel, F. Alvarez, Tool steel ion beam assisted nitrocarburization, Materials Science and Engineering A 465 (2007) 194-198.
• [3] T. Bell, Y. Sun, A. Suhadi, Environmental and technical aspects of plasma nitrocarburizing, Vacuum 59 (2000) 14-23.
• [4] T. Babul, T.G. Kucharieva, A. Nakonieczny, Effect of initial microstructure of tool steels on the thickness and hardness of layers obtained by nitrocarburizing, Metal Science and Heat Treatment 46 (2004) 7-8.
• [5] N.G. Kucharieva, T. Babul, Z. Obuchowicz, A. Nakonieczny, Patent application No. P-394532 (12.04.2011).
• [6] T. Babul, A. Ciski, P. Oleszczak, The New Fluidized Bed Thermo-Chemical Treatment in Chemically Active Powders - CFD Analysis of the Method, Advanced Materials Research (in print).
• [7] P.C. King, R.W. Reynoldson, A. Brownrigg, J.M. Long, Ferritic nitrocarburising of tool steels, Surface Engineering 21/2 (2005) 86-98.
• [8] N. Krishnaraj, P. Bala Srinivasan, K.J.L. Iyer, S. Sundaresan, Optimization of compound layer thickness for wear resistance of nitrocarburized H 11 steels, Wear 215 (1998) 123-130.
• [9] M. Karakan, A. Alsaran, A. Celik, Effect of process time on structural and tribological properties of ferritic plasma nitrocarburized AISI 4140 steel, Materials and Design 25 (2004) 349-353.
• [10] U. Ebersbach, J. Naumann, Bewertung der Lochkorrosionsbeständigkeit von nitrocarburiiertem und oxidiertem Stahl Salzversuche und elektro-chemische korrosionsuntersuchungen, HTM 55/6 (2000) 345-352.
• [11] G. Walkowiak, M. Corr-i-dur Wägner, Nitrocarburising and oxidising: Correlation between layer constitution and corrosion resistance, Proceedings of the 8th Seminar of the International Federation for Treatment and Surface Engineering IFHTSE 2001.