Russian Metallurgy (Metally)

, Volume 2019, Issue 13, pp 1492–1496 | Cite as

Technology of Borating Hardening of the Chaff-Cutter Drum Knives in a Grain Harvester Combine

  • V. P. LyalyakinEmail author
  • V. A. Aulov
  • A. V. Ishkov
  • A. Yu. Trokhin
  • D. B. Slinko


The methods of hardening of the chaff-cutter drum knives in a grain harvester combine are analyzed. The wear resistances of 65g steel samples hardened by quenching and borating and heating by high-frequency currents are compared. The results of field tests of the hardened knives are presented. These results are used to propose a design for a hardening coating. A two-coil induction heater is suggested for simultaneous heating of both face edges of a knife.


knife wear hardening induction heater high-frequency current borating 



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Copyright information

© Pleiades Publishing, Ltd. 2019

Authors and Affiliations

  • V. P. Lyalyakin
    • 1
    Email author
  • V. A. Aulov
    • 1
  • A. V. Ishkov
    • 2
  • A. Yu. Trokhin
    • 3
  • D. B. Slinko
    • 4
  1. 1.FGBNU Federal Scientific Agroengineering Center VIMMoscowRussia
  2. 2.Altai State Agrarian UniversityBarnaulRussia
  3. 3.OOO Combine Plant ROSTSEL’MAShRostov-on-DonRussia
  4. 4.Bauman Moscow State Technical UniversityMoscowRussia

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