Evaluation of the properties of 65G steel samples after the laser and conventional hardening methods in relation to the operation of agricultural and forestry machines

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Abstract

The article analyzes the structural, stress condition and triboengineering tests of 65G steel samples after the laser and conventional hardening methods for possible extension of the service life of parts and mechanisms for the forestry and agricultural machinery. It is established that the abrasive wear resistance is increased by 2.5 and 1.7 times compared to 65G steel in the initial condition and after bulk hardening, respectively. Based on the experimental assessment results of the thermal residual stress level after the bulk furnace hardening and laser hardening of the 65G steel samples, a calculation has been made for the predicted subsequent service life of the parts of tilling mechanisms and machines.

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About the authors

Vladimir P. Biryukov

Mechanical Engineering Research Institute of the Russian Academy of Sciences (IMASH RAN)

Author for correspondence.
Email: journal@electronics.ru
ORCID iD: 0000-0001-9278-6925

leading researcher, Ph.D. in technical sciences

Russian Federation, Moscow

Valeriy I. Krivorotov

LLC NTO “IRE-Polyus”

Email: journal@electronics.ru
ORCID iD: 0009-0008-6520-7500

deputy head of the attestation and certification department, Ph.D. in technical services

Russian Federation, Fryazino, Moscow region

Boris E. Lukanin

LLC NTO “IRE-Polyus”

Email: journal@electronics.ru
ORCID iD: 0009-0008-8277-0688

head of the certification and attestation unit of the attestation and certification department, Scientific and Technical Association “IRE-Polyus” LLC, postgraduate student, Mytishchinskiy branch of Bauman Moscow State Technical University

Russian Federation, Fryazino, Moscow region

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Supplementary files

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2. Fig. 1. The studied samples made of 65G steel after cutting from a sheet

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3. Fig. 2. Distribution of microhardness by width and depth under various hardening conditions: a) – linear, b) – circular, c) – round spot

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4. Fig. 3. Shape of the hardened sample layer zone under various conditions: a – linear; b – circular; c – round spot

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5. Fig. 4. Weight loss of 65G steel samples when tested with the free abrasive grain: 1 – original steel, 230–270 HV; 2 – hardening with water cooling, 510–550 HV; 3 – hardening with oil cooling, 440–470 HV; 4 – round spot, 693–805 HV; 5 – circular, 650–714 HV; 6 – linear, 875–904 HV

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Copyright (c) 2024 Biryukov V.P., Krivorotov V.I., Lukanin B.E.