- Tytuł:
- Parameters selection of shot peening gears of carburized and hardened steel 21NiCrMo2
- Autorzy:
-
Tchórz, T.
Śnieżek, L.
Grzelak, K.
Mierzyński, J. - Powiązania:
- https://bibliotekanauki.pl/articles/245218.pdf
- Data publikacji:
- 2016
- Wydawca:
- Instytut Techniczny Wojsk Lotniczych
- Tematy:
-
materials engineering
shot peening
vehicles
gears - Opis:
- 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.
- Źródło:
-
Journal of KONES; 2016, 23, 2; 389-395
1231-4005
2354-0133 - Pojawia się w:
- Journal of KONES
- Dostawca treści:
- Biblioteka Nauki
Artykuł