DOI: https://doi.org/10.32515/2664-262X.2022.5(36).1.40-47

Improving the Technical Resource and Durability of the Working Bodies of Tillage Agricultural Machines

Mykola Denisenko

About the Authors

Mykola Denisenko, Associate Professor, PhD in Technics (Candidate of Technics Sciences), Nemishayev Vocational College of NUBiP of Ukraine, Nemishayeve township, Bucha district, Kyiv region, Ukraine, e-mail: mdenisenko317@gmail.com

Abstract

The working bodies of tillage agricultural machines (ploughshare, plow shelf, cultivator paw, harrow disc) work in conditions of abrasive operation, shock loads and the impact of external aggressive environment. Their repair is to restore the original size of parts and wear resistance of functional work surfaces. During the operation of tillage machines and units, the working surfaces are subjected to uneven wear, which reduces the life of parts and increases the cost of their replacement and restoration. The working bodies of tillage agricultural machines (ploughshare, plow shelf, cultivator paw, harrow disc) work in conditions of abrasive operation, shock loads and the impact of external aggressive environment. Their repair is to restore the original size of parts and wear resistance of functional work surfaces. During the operation of tillage machines and units, the working surfaces are subjected to uneven wear, which reduces the life of parts and increases the cost of their replacement and restoration. The current level of operation of agricultural machinery is characterized by increased speeds and high productivity, which, in turn, leads to increased wear of parts. accordingly, the reliability of the recovered machines will depend on the wear resistance and fatigue strength of the recovered parts. The leading place in the repair of machines is occupied by welding and surfacing processes, which account for about 80% of all restorative parts. Surfacing makes it possible to obtain layers of any thickness and chemical composition on the working surfaces of parts; apply a welded layer with different properties, ie high hardness and wear resistance. In this work we use point (point) hardening, which consists in micro-dripping of the hard alloy into the surface structure of parts that undergo intense abrasive wear. The geometry of the hardening point is a spherical sector, which facilitates the rapid removal of heat from the surfacing bath in the base metal and the environment, so the hardening points harden at high speed and in a short time. At point strengthening of details one of the main conditions providing stable quality of process - coordination of welding current and arc voltage. The sawtooth profile of the ploughshare blade (cultivator paws) is maintained throughout its service life. providing effective cutting even with the blades worked.

Keywords

share plough, friction surface, abrasive wear, operating longevity, point welding

Full Text:

PDF

References

1. Bobrytsʹkyy, V.M. (2007). Pidvyshchennya znosostiykosti rizalʹnykh elementiv robochykh orhaniv hruntobrobnykh mashyn [Improving the wear resistance of the cutting elements of the working bodies of tillage machines] . Extended abstract of Candidate's thesis. Kyiv [in Ukrainian].

2. Aulin, V.V. (2015). Trybofizychni osnovy pidvyshchennya znosostiykosti detaley ta robochykh orhaniv silʹsʹkohospodarsʹkoyi tekhniky [Tribophysical bases of increase of wear resistance of details and working bodies of agricultural machinery] . Extended abstract of Doctor's thesis. Khmelʹnytsʹkyy [in Ukrainian].

3. Novykov, V.S. (2008). Obespechenye dolhovechnosty rabochykh orhanov pochvoobrabatyvayushchykh mashyn [Ensuring the durability of the working bodies of tillage machines] . Extended abstract of Doctor's thesis. Moskow [in Russian].

4. Severnev, M.M., Podlekarev N.N., Sokhadze V.Sh. & Kytykov V.O. (2011). Yznos y korrozyya selʹskokhozyaystvennykh mashyn [Wear and corrosion of agricultural machinery]. Mynsk: Belorus.Navuk [in Russian].

5. Tkachev, V.N. (1995). Rabotosposobnostʹ detaley mashyn v uslovyyakh abrazyvnoho yznashyvanyya [Performance of machine parts under abrasive wear conditions]. Moskow : Mashynostroenye [in Russian].

6. Denysenko, M.I. & Rublʹov V.I. (2011). Pidvyshchennya dovhovichnosti robochykh orhaniv hruntobrobnykh mashyn z vykorystannyam tochkovoho zmitsnennya [Increasing the durability of the working bodies of tillage machines with the use of point reinforcement]. Zbirnyk naukovykh prats Tsentralnoukrainskoho natsionalnoho tekhnichnoho universytetu. Tekhnika v silskohospodarskomu vyrobnytstvi, haluzeve mashynobuduvannia, avtomatyzatsiia – Collected Works of Kirovohrad National Technical University. Machinery in Agricultural Production, Industry Machine Building, Automation , Vol.24(2), 28-35 [in Ukrainian].

7. Denysenko, M.I. & Opalʹchuk, A.S. (2011). Znoshuvannya ta pidvyshchennya dovhovichnosti robochykh orhaniv silʹsʹkohospodarsʹkykh mashyn [Wear and tear of working bodies of agricultural machines] . Visnyk TNTU – Scientific journal of TNTU, Special issue, part 2, 201-210 [in Ukrainian].

8. Klyuenko, V.N. & Balan, V.P. (1989). Tochechnoe uprochnenye rabochykh orhanov pochvoobrabatyvayushchykh mashyn [Point hardening of the working bodies of tillage machines]. Moskow : Traktory y selʹskokhozyaystvennye mashyny [in Russian].

9. Ryabtsev, Y.A., Panfylov, A.Y., Babynets, A.A., Ryabtsev, Y.Y., Hordanʹ, H.N. & Babyychuk, Y.L. (2015). Struktura y yznosostoykostʹ pry abrazyvnom yznashyvanyy naplavlennoho metalla, uprochnennoho karbydamy razlychnykh typov [Structure and wear resistance during abrasive wear of deposited metal hardened with various types of carbides]. Kiev: Avtomatycheskaya svarka [in Russian].

GOST Style Citations

  1. Бобрицький В.М. Підвищення зносостійкості різальних елементів робочих органів ґрунтобробних машин: автореф. дис. на здобуття наук. ступеня канд. техн. наук: 05.02.04. Київ, 2007. 20 с.
  2. Аулін В.В. Трибофізичні основи підвищення зносостійкості деталей та робочих органів сільськогосподарської техніки: автореф. дис. на здобуття наук. ступеня д-ра техн. наук: 05.02.04. Хмельницький, 2015. 36 с.
  3. Новиков В.С. Обеспечение долговечности рабочих органов почвообрабатывающих машин: автореф. дис. на здобуття наук. ступеня д-ра техн.наук: 05.20.03 . Москва, 2008. 39 с.
  4. Износ и коррозия сельскохозяйственных машин / М.М. Севернев, Н.Н. Подлекарев, В.Ш. Сохадзе, В.О. Китиков. Минск: Белорус. Навук, 2011.333 с.
  5. Ткачев В.Н. Работоспособность деталей машин в условиях абразивного изнашивания . М.: Машиностроение, 1995. 336 с.
  6. Денисенко М.І., Рубльов В.І. Підвищення довговічності робочих органів грунтобробних машин з використанням точкового зміцнення . Техніка в сільськогосподарському виробництві, галузеве машинобудування, автоматизація: зб. наук. пр. Кіровоградського нац. техн. ун-ту. 2011. Вип.24(2). С.28-35.
  7. Денисенко М.І., Опальчук А.С. Зношування та підвищення довговічності робочих органів сільськогосподарських машин . Вісник ТНТУ. 2011. Спецвипуск. Ч.2. С.201-210.
  8. Клюенко В.Н., Балан В.П. Точечное упрочнение рабочих органов почвообрабатывающих машин . Тракторы и сельскохозяйственные машины. М. : Тракторы и сельскохозяйственные машины, 1989. С.54-57.
  9. Структура и износостойкость при абразивном изнашивании наплавленного металла, упрочненного карбидами различных типов / И.А.Рябцев и др. Автоматическая сварка. № 5-6. 2015. С.84-88.
Copyright (c) 2022 Mykola Denisenko