Conclusions
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1.
The wear resistance of low-hardenability steel 55PP is almost constant through the depth of the layer quenched to martensite.
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2.
The wear resistance of carburized steels 15Kh and 18KhGT decreases by a factor of 2–3 through the depth of the carburized and quenched-to-martensite layers.
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3.
The wear resistance of low-hardenability steel 55PP with a hardened layer">0.1 mm removed by grinding is higher than that of steel 15Kh, and with a layer">0.25 mm removed it is higher than that of steel 18KhGT.
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4.
In selecting materials for parts subject to wear in operation, it is necessary to take into account the allowance for machining after heat treatment and if it is ">0.2 mm it is expedient to use low-hardenability steel 55PP subjected to induction hardening.
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Literature cited
V. N. Korneev, "Accelerated bench tests of hydraulic distributor systems," Traktory Sel'khozmashiny, No. 4, 13 (1974).
K. Z. Shepelyakovskii, Induction Hardening of Machine Parts [in Russian], Mashinostroenie Moscow (1972).
V. P. Lobozov and A. V. Mareichev, Induction Hardening of Hydraulic Distributor Slide Valves Made of Carbon Steel and Low-Hardenability Steel in Place of Bulk Hardening of Carburizing Steel 15Kh [in Russian], Data Sheet No. 67/261, Ser. 10.09, TsNIITETraktorosel'khozmash, Moscow (1975), p. 2.
Additional information
Moscow Factory of Tractor Hydraulic Equipment. Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 7, pp. 45–47, July, 1978.
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Lobozov, V.P., Shepelyakovskii, K.Z. Change in the wear resistance through the depth of the hardened layer on carburized and surface hardened steels. Met Sci Heat Treat 20, 563–566 (1978). https://doi.org/10.1007/BF00780337
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DOI: https://doi.org/10.1007/BF00780337