Parameters selection of shot peening gears of carburized and hardened steel 21NiCrMo2

• Autorzy: Tchórz T. , Śnieżek L. , Grzelak K. , Mierzyński J.

Identyfikatory

DOI

10.5604/12314005.1213759

• Języki publikacji: EN

Abstrakty

EN

This article presents the methodology of shot peening gears’ parameters selection used in agricultural tractor transmission. The gears made of steel have been treated with 21NiCrMo2 thermal-chemical consisting of carburization to the depth of 0.8 mm and subsequently hardened. The hardness of the side teeth surface after hardening was 58 HRC. The same process of thermo chemical was used for flat samples with dimensions 120×12×5 mm. Prepared samples were divided into two series. First shot peening was treated with spherical pellet with a varied diameter from 0.4 mm to 2.5 mm. For second series samples additional treatment of shot peening was not carried out. Then micro-hardness, roughness and longitudinal and transverse residual stresses were measured. As a result of the studies, there were selected parameters of shot peening, exerting the greatest influence on favourable residual stresses distribution in the surface layer of material and an increase in microhardness. At the same time, particular attention was paid to the morphology of samples surfaces after shot peening. There were rejected the parameters of shot peening, which caused damage to the surface in the form of visible cracks and craters. Based on the analysis presented in this article there were selected shot peening parameters, which will be applied during the additional dynamic surface processing of gears, used in the tractor’s drive system.

Słowa kluczowe

EN

materials engineering; shot peening; vehicles; gears

• Wydawca: Łukasiewicz Research Network - Institute of Aviation ; European Science Society of Powertrain and Transport KONES Poland ; Wydawnictwo Instytutu Technicznego Wojsk Lotniczych
• Czasopismo: Journal of KONES
• Rocznik: 2016
• Tom: Vol. 23, No. 2
• Strony: 389--395
• Opis fizyczny: Bibliogr. 15 poz., rys.

Twórcy

autor

Tchórz T.

• Military University of Technology Sylwestra Kaliskiego str. 2, 00-908, Warsaw, Poland tel.: [phone], fax: [phone]

autor

Śnieżek L.

• Military University of Technology Sylwestra Kaliskiego str. 2, 00-908, Warsaw, Poland tel.: [phone], fax: [phone]

autor

Grzelak K.

• Military University of Technology Sylwestra Kaliskiego str. 2, 00-908, Warsaw, Poland tel.: [phone], fax: [phone]

autor

Mierzyński J.

• Military University of Technology Sylwestra Kaliskiego str. 2, 00-908, Warsaw, Poland tel.: [phone], fax: [phone]

Bibliografia

• [1] Aggarwal, M. L., Agrawal, V. P., Khan, R. A., A Stress Approach Model for Predictions of Fatigue Life by Shot Peening of EN45A Spring Steel. International Journal of Fatigue 28, 2006.
• [2] Kirk, D., Development of Shot Peening Control and Residual Stress Patterns. Europe-USA Seminar on Shot Peening 29-30 Sept. 1992, Cincinati, Ohio, USA – 14 Oct. 1992, Grenoble, France.
• [3] Kirk, D., Shot peening. Aircraft Engineering and Aerospace Technology, pp. 71, No. 4, 1999.
• [4] Kukiełka, L., Teoretyczne i doświadczalne podstawy powierzchniowego nagniatania tocznego z elektrokontaktowym nagrzewaniem, WSI, 1994 (in polish).
• [5] Kukiełka, L., Kułakowska, A., Patryk, R., Problematyka kształtowania jakości technologicznej części w procesie nagniatania powierzchniowego, Pomiary, Automatyka Kontrola, 2008 (in polish).
• [6] Majzoobi, G.H., Azizi, R., Alvi, Nia, A., A three-dimensional Simulation of Shot Peening Process Using Multiple Shot Impacts, Journal of Materials Processing Technology, pp 164-165, 15 May 2005.
• [7] Meister, J.T., Eckersley, J.S., Improving Fatigue Life of Gears by Shot Peening, Advances in Gear Technology. A Symposium on Gear Manufacturing Through Powder Metallurgy, 1998.
• [8] Nakonieczny, A., Dynamiczna powierzchniowa obróbka plastyczna kulowanie, Instytut Mechaniki Precyzyjnej, Warsaw 2002 (in polish).
• [9] Przybylski, W., Technologia obróbki nagniataniem, WNT, 1987 (in polish).
• [10] Radziejewska, J., Laserowa modyfikacja właściwości warstwy wierzchniej wspomagana nagniataniem, Instytut Podstawowych Problemów Techniki Polskiej Akademii Nauk. Warsaw 2011 (in polish).
• [11] Schulze, V., Modern Mechanical Surface Treatment, States, Stability, Effects, Wiley-VCH 2006.
• [12] Shot Peening Applications, Metal Improvement Company, Inc. New Jersey 1992;
• [13] Suh Nam P., Tribophysics, Prentice Hall 1986.
• [14] Tubielewicz, K., Analiza zjawisk towarzyszących odkształceniu warstwy wierzchniej w procesie nagniatania, Wydawnictwo Politechnika Częstochowska, 1990 (in polish).
• [15] Tubielewicz, K., Technologia nagniatania żeliwnych części maszynowych, Wydawnictwo Politechnika Częstochowska, Częstochowa, 2000 (in polish).

Uwagi

PL

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę.