4_2020_sen_7

Title of the article DEVELOPMENT OF MINIMALLY ALLOYED STRUCTURAL STEEL FOR LARGE MODULE GEARS OF TRANSMISSIONS
Authors

RUDENKO Sergei P., Ph. D. in Eng., Leading Researcher, 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.

VALKO Aleksandr L., Senior Researcher, 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.

SANDOMIRSKI Sergei G., D. Sc. in Eng., Assoc. Prof., Head of the Laboratory of Metallurgy in Mechanical Engineering, 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.
In the section MECHANICAL ENGINEERING MATERIALS AND TECHNOLOGIES
Year 2020
Issue 4
Pages 52–59
Type of article RAR
Index UDK 669.15
DOI https://doi.org/10.46864/1995-0470-2020-4-53-52-59
Abstract In the world practice of manufacturing gears for automotive equipment, a search is being made for new, more effective steel grades and ways to realize their advantages, achieved both during smelting and during further thermal, deformation and chemical-thermal treatment. There is a tendency to reduce the nickel content in structural steel grades and replace them with sparingly alloyed, microalloyed with strong carbide-forming elements. The condition for using sparingly alloyed structural steels is the ability to find a compromise between increasing the reliability and durability of machine parts and saving deficient alloying materials. Based on this, the article formulates the main provisions that should be taken into account when developing minimally alloyed structural steel compositions for manufacturing highly stressed gears of mobile machine transmissions. It is shown that the introduction of new sparingly alloyed steel grades leads to the need to develop new technologies with the solution in each case of the problem of assessing the impact of alloying elements and microadditives on the hardenability of steel. The method of minimum doping of steel for gears with a module of 10 mm is given. Based on the application of a new approach, a new minimally alloyed structural steel has been developed that provides high strength, fatigue and technological characteristics of large module gears. The hardenability of the core and cemented layers of the developed steel is determined, which provides the life of the gears for at least 1,000 hours in operating conditions at contact stresses in the engagement pole σН = 1,800 MPa.
Keywords sparingly alloyed structural steels, hardenability, minimal alloying, calculation method
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Bibliography
  1. Houdremont E. Handbuch der Sonderstahlkunde. Zweiter Band. Berlin, Springer-Verlag, 1956.
  2. Sagaradze V.S. Povyshenie nadezhnosti tsementuemykh detaley [Increasing the reliability of cemented parts]. Moscow, Mashinostroenie Publ., 1975. 216 p. (in Russ.).
  3. Braun M.P. Ekonomno-legirovannye stali dlya mashinostroeniya [Sparingly alloyed steels for mechanical engineering]. Kiev, Naukova dumka Publ., 1977. 208 p. (in Russ.).
  4. Khaysterkamp F., Khulka K., Matrosov Yu.I., Morozov Yu.D., Efron L.I., Stolyarov V.I., Chevskaya O.N. Niobiysoderzhashchie nizkolegirovannye stali [Niobium-containing low alloyed steels]. Moscow, Intermet inzhiniring Publ., 1999. 94 p. (in Russ.).
  5. Rudenko S.P., Valko A.L., Sandomirsky S.G. Otsenka primenimosti ekonomno-legirovannykh staley dlya vysokonapryazhennykh zubchatykh koles [Evaluation of application of the sparingly alloyed steels for highly stressed gear wheels]. Aktualnye voprosy mashinovedeniya, 2018, iss. 7, pp. 346–349 (in Russ.).
  6. Rudenko S.P., Valko A.L. Razrabotka rezhimov khimiko-termicheskoy obrabotki zubchatykh koles iz ekonomnolegirovannoy stali [Development of the regimes of chemical heat treatment of gear wheels from sparingly alloyed steel]. Mechanics of machines, mechanisms and materials, 2017, no. 2(39), pp. 34–38 (in Russ.).
  7. Rudenko S.P., Valko A.L. Osobennosti primeneniya ekonomnolegirovannykh staley dlya krupnomodulnykh zubchatykh koles [Features of application of sparingly alloyed steels for large module gears]. Stal, 2018, no. 8, pp. 54–58 (in Russ.).
  8. Rudenko S.P., Valko A.L., Sandomirskii S.G. Primenenie perspektivnykh ekonomno-legirovannykh marok staley dlya zubchatykh koles mobilnykh mashin [Application of promising sparingly alloyed steel for gears of mobile machines]. Mechanics of machines, mechanisms and materials, 2019, no. 4(49), pp. 61–69 (in Russ.).
  9. Rudenko S.P., Valko A.L., Sandomirski S.G. Preimushсhestva primeneniya ekonomnolegirovannykh staley dlya vysokonagruzhennykh zubchatykh koles [Advantages of using sparingly alloyed steels for high-loaded gears]. Trudy 27 Mezhdunarodnoy nauchno-tekhnicheskoy konferentsii “Liteynoe proizvodstvo i metallurgiya 2019. Belarus” [Proc. 27th International scientific and technical conference “Foundry and metallurgy 2019. Belarus”]. Zhlobin, 2019, pp. 122–126 (in Russ.).
  10. Rudenko S.P. Raschet resursa zubchatykh koles transmissii energonasyshchennykh mashin s uchetom kachestva khimikotermicheskogo uprochneniya [Calculation of the life of gear wheels of transmissions of energy-saturated machines, taking into account the quality of chemical heat hardening]. Mechanics of machines, mechanisms and materials, 2010, no. 4, pp. 58–60 (in Russ.).
  11. Rudenko S.P., Valko A.L., Sandomirskii S.G. Primenenie standarta ASTM A255–07 dlya rascheta prokalivaemosti staley, izgotavlivaemykh po GOST 4543–2016 [Application of standard ASTM A255–07 to calculate hardenability of steels produced according to GOST 4543-2016]. Mechanics of machines, mechanisms and materials, 2019, no. 3, pp. 51–57 (in Russ.).
  12. Rudenko S.P., Valko A.L., Sandomirskii S.G. Analiz primenimosti stali 20MnCrS5 dlya zubchatykh koles otechestvennykh mobilnykh mashin [Analysis of the applicability of steel 20MnCrS5 for gears of the domestic mobile machines]. Foundry production and metallurgy, 2020, no. 1, pp. 44–49 (in Russ.).
  13. Rudenko S.P., Valko A.L. Osobennosti rascheta zubchatykh koles transmissiy na glubinnuyu kontaktnuyu vynoslivost [Features of analysis of gear wheels of transmissions on deep seated endurance]. Vestnik mashinostroeniya, 2015, no. 11, pp. 5–7 (in Russ.).
  14. Rudenko S.P., Kuzmenkov O.I., Shipko A.A., Valko A.L. Raschet resursa zubchatykh koles transmissiy (GearProg). Svidetelstvo ob ofitsialnoy registratsii na EVM [Calculating life of transmission gears i (GearProg). The certificate on official registration of the computer program]. No. С20130054, 2013 (in Russ.).
  15. Rudenko S.P. Zavisimost predela vynoslivosti pri izgibe zubev zubchatykh koles ot mekhanicheskikh svoystv materiala [Dependence of the endurance limit when bending the teeth of gears on the mechanical properties of the material]. Materialy, oborudovanie i resursosberegayushchie tekhnologii, 2020, pp. 96–97 (in Russ.).
  16. Markovets M.P. Opredelenie mekhanicheskikh svoystv metallov po tverdosti [Determination of mechanical properties of metals by hardness]. Moscow, Mashinostroenie Publ., 1979. 191 p. (in Russ.).
  17. Standard Hardness Conversion Tables for Metals Relationship Among Brinell Hardness, Vickers Hardness, Rockwell Hardness, Superficial Hardness, Knoop Hardness, and Scleroscope Hardness. 2007. 21 p. Available at: ttps://www.academia.edu/27768624/Standard_Hardness_Conversion_Tables_for_Metals_ Relationship_Among_Brinell_Hardness_Vickers_Hardness_Rockwell_Hardness_Superficial_ Hardness_Knoop_Hardness_and_Scleroscope_Hardness_1.
  18. Toth L. Transition Metal Carbides and Nitrides. Academic Press, 1971. 296 p.
  19. Goldshteyn M.I., Farber V.M. Dispersionnoe uprochnenie stali [Dispersion hardening of steel]. Moscow, Metallurgiya Publ., 1979. 208 p. (in Russ.).
  20. Goldshteyn M.I., Popov V.V. Rastvorimost faz vnedreniya pri termicheskoy obrabotke stali [The solubility of the injection phases during heat treatment of steel]. Moscow, Metallurgiya Publ., 1989. 200 p. (in Russ.).
  21. Rudenko S.P., et al. Sposob izgotovleniya stalnoy detali [Method of manufacturing a steel part]. Patent EA, no. 031975, 2019 (in Russ.).
  22. Rudenko S.P., Valko A.L., Chichin A.N. Stal dlya vysokotemperaturnoy tsementatsii [Steel for high-temperature cementation]. Stal, 2020, no. 2, pp. 56–60 (in Russ.).