Conclusions
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1.
SPS hardening of the parts of alloy-steel shafts under the hub that were heat-treated to high strength categories makes it possible to utilize the advantages of these steels that their strength provides. The endurance limit of SPS-hardened specimens with press-fitted mating parts was 2.6 times higher than of non-hardened specimens.
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2.
SPS is a very efficient means of increasing the fatigue resistance of the part of the shaft under the hub, even when the keyway is milled after strain-hardening.
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3.
Fretting and fatigue damage on the parts of shafts under the hub in press-fitted keyway joints may occur on both sides of the keyway at its end and on the side opposite to the keyway.
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Literature cited
L. T. Balatskii, Fatigue of Shafts in Joints [in Russian], Tekhnika, Kiev (1972).
L. T. Balatskii, O. K. Melekhov, and G. N. Filimonov, “Fatigue of cracks in bending as parts of keyed and nonkeyed joints,” Vestn. Mashinostr., No. 7, 17–18 (1973).
M. Ya. Belkin, A. S. Venzhega, and V. N. Slyusarenko, “Hardening of components weakened by a keyway,” Vestn. Mashinostr., No. 3, 63–65 (1965).
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Translated from Problemy Prochnosti, No. 8, pp. 106–108, August, 1980.
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Balatskii, L.T., Filimonov, G.N., Babinets, V.I. et al. Increased fatigue resistance of shafts in keyed press-fitted joints by surface-plastic strain. Strength Mater 12, 1042–1044 (1980). https://doi.org/10.1007/BF00770538
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DOI: https://doi.org/10.1007/BF00770538