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Title of the article NEW STEELS AND TECHNOLOGIES FOR NITRIDED PARTS OF LONG LIFE MACHINES
Authors

VITYAZ Petr A., Academician of the NAS of Belarus, D. Sc. in Eng., Prof., Head of the Apparatus of the NAS of Belarus, Presidium of the NAS of Belarus, Minsk, Republic of Belarus, This email address is being protected from spambots. You need JavaScript enabled to view it.">This email address is being protected from spambots. You need JavaScript enabled to view it.

SOTNIKOV Maksim V., Junior Researcher of the Laboratory of Reliability Problems and Metal Intensity of High and Extra-High Capacity Dump Trucks, Joint Institute of Mechanical Engineering of the NAS of Belarus, Minsk, Republic of Belarus, This email address is being protected from spambots. You need JavaScript enabled to view it.">This email address is being protected from spambots. You need JavaScript enabled to view it.

SIDORENKO Aleksandr G., Ph. D. in Eng., Head of the Laboratory of Reliability Problems and Metal Intensity of High and Extra-High Capacity Dump Trucks, Joint Institute of Mechanical Engineering of the NAS of Belarus, Minsk, Republic of Belarus, This email address is being protected from spambots. You need JavaScript enabled to view it.">This email address is being protected from spambots. You need JavaScript enabled to view it.

MOISEENKO Vladimir I., D. Sc. in Eng., Prof., Chief Researcher of the Laboratory of Reliability Problems and Metal Intensity of High and Extra-High Capacity Dump Trucks, Joint Institute of Mechanical Engineering of the NAS of Belarus, Minsk, Republic of Belarus, This email address is being protected from spambots. You need JavaScript enabled to view it.">This email address is being protected from spambots. You need JavaScript enabled to view it.

SHISHKO Sergey A., Deputy Chief Designer, OJSC “BELAZ” — Management Company of Holding “BELAZ-HOLDING”, Zhodino, Republic of Belarus, This email address is being protected from spambots. You need JavaScript enabled to view it.">This email address is being protected from spambots. You need JavaScript enabled to view it.
In the section MECHANICAL ENGINEERING MATERIALS AND TECHNOLOGIES
Year 2021
Issue 3(56)
Pages 42–51
Type of article RAR
Index UDK 621.833, 621.785.53
DOI https://doi.org/10.46864/1995-0470-2021-3-56-42-51
Abstract The analysis of the used steels for nitrided parts is carried out. On the basis of a new methodology for increasing the strength of structural steels and parts, new scientific approaches and practical solutions are proposed and considered for the creation of gear wheels strengthened by nitriding both when using aluminum containing steels and a new material, 40ХМФА (40KhMFA) steel, that does not contain aluminum. To improve the efficiency and manufacturability of parts production from aluminum-containing 38Х2МЮА (38Kh2MYuA) steel, widely used in mechanical engineering, a fundamentally new technology of preliminary heat treatment of part blanks, “incomplete quenching”, has been developed, which provides both an increase in the machinability and accuracy of large-sized gear wheels, and an increase in strength due to the elimination of flaking of nitrided layer. The research results are presented on 40ХМФА (40KhMFA) steel, which does not contain aluminum, has increased heat resistance, hardenability and workability of parts, as well as the characteristics of the hardened layer. The nitrided layer of gears with a thickness of 0.5–0.7 mm does not contain brittle components, which, with a core hardness of 300–320 HB, also excludes its flaking and subsequent destruction of parts. The use of 40ХМФА (40KhMFA) steel makes it possible to solve the problems of reliability and life of large-sized nitrided gears, but it is also promising for the entire range of gears with internal gearing, as well as parts of movable spline gearings and fine-modular gears in order to replace carburizing with nitriding.
Keywords nitriding, microhardness, nitrided layer, mechanical characteristics
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Bibliography
  1. Case S.L., van Horn K.R. Aluminum in iron and steel. New York, John Wiley and Sons, Inc., 1953.
  2. Lakhtin Yu.M., Kogan Ya.D. Azotirovanie stali [Nitriding of steel]. Moscow, Mashinostroenie Publ., 1976. Pp. 1–57 (in Russ.).
  3. Arendarchuk A.V., et al. Termicheskaya obrabotka v mashinostroenii [Heat treatment in mechanical engineering]. Moscow, Mashinostroenie Publ., 1980. Pp. 322–344 (in Russ.).
  4. Kharitonchik D.I., Moiseenko V.I. Krupnogabaritnye zubchatye kolesa s vnutrennim zatsepleniem iz alyuminiysoderzhashchikh staley [Large-sized gears with internal gearing made of aluminum-containing steels]. Minsk, Belorusskaya nauka Publ., 2012. 125 p. (in Russ.).
  5. Moiseenko V.I., Mariev P.L. Osnovy strukturnoy ravnoprochnosti stali i elementov krupnogabaritnykh detaley mashin [Fundamentals of structural strength balance of steel and elements of large-sized machine parts]. Minsk, Institut kibernetiki NAN Belarusi Publ., 1999. 200 p. (in Russ.).
  6. Moiseenko V.I., Sapunov A.L., Shkatulo N.D. Azotiruemaya stal dlya zubchatykh koles [Nitrided steel for gears]. Patent RU, no. 2553764, 2015.
  7. Kharitonchik D.I. Konstruktsionnaya prochnost alyuminiysoderzhashchikh staley v krupnogabaritnykh azotirovannykh zubchatykh kolesakh c vnutrennim zatsepleniem [Structural strength of aluminum-containing steels in constructions of large-dimension nitrided internal gears]. Mechanics of machines, mechanisms and materials, 2012, no. 1(18), pp. 71–75 (in Russ.).
  8. Kurilenko V.V., Moiseenko V.I., Chuchurkin E.M., Shishko S.A. Konstruktsionnaya prochnost i tekhnologichnost bezalyuminievykh staley krupnogabaritnykh azotirovannykh zubchatykh koles [Structural strength and manufacturability of steels not containing aluminum for large scale nitrided gears]. Mechanics of machines, mechanisms and materials, 2013, no. 1(22), pp. 60–66 (in Russ.).
  9. Vityaz P.A., Moiseenko V.I., Sidorenko A.G., Sotnikov M.V., Shkatulo N.D., Haritonchik D.I. Opyt i perspektivy ispolzovaniya konstruktsionnykh staley dlya azotirovannykh zubchatykh koles [Experience and prospects of use of structural steels for nitridated gears]. Proceedings of the National Academy of Sciences of Belarus. Physical-technical series, 2021, vol. 66, no. 1, pp. 58–65 (in Russ.).
  10. Moiseenko V.I., Papkovskiy P.I., Shkatulo N.D., Shishko S.A., Kharitonchik D.I., Mariev P.L. Sposob izgotovleniya zubchatykh koles [Method of manufacturing gears]. Patent BY, no. 9749, 2007 (in Russ.).