Evaluation of the wear resistance and resource hardened by electrospark machining of the cutting surfaces of the fingers of the headers of combine harvesters

Величко, С. А.; Sharifullin, S. N.; Kuznetsov, I. S.; Kolomeichenko, A. V.; Solovyev, R; Кравченко, И. Н.; Adigamov, Nail

doi:10.1088/1757-899x/915/1/012045

Cited by 2 publications

(2 citation statements)

References 7 publications

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“…On it was placed an indentor (counter-sample) in the form of a ball with a diameter of 6 mm composed of 100Cr6. The endurance of the investigated coatings was evaluated in conjunction with the counter-model [17,18].…”

Section: Methodsmentioning

confidence: 99%

The Tribotechnical Properties of Electrosparks with a Secondary Bronze Coating

et al. 2022

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The high cost of metal powder materials and the energy consumption of the methods involved in their production have led to an increase in the cost of technologies for the restoration and hardening of parts. One method of solving this problem is the recycling of powders. A promising method for processing the waste from machine-building industries, including those utilizing non-ferrous metals and alloys, is electroerosive dispersion. Metallic powders from secondary raw materials obtained in this manner have good physical and mechanical properties, and their cost is two to three times less than the cost of industrial ones. However, the tribotechnical properties of the secondary powders of non-ferrous metals and their use in technologies for the restoration and hardening of parts are still poorly understood. This paper presents a comparative analysis of the tribotechnical properties of coatings obtained via an electric spark treatment with electrodes composed of bronze CuAl9Fe3 (CuAl8Fe3) (in the state of delivery), and coatings of sintered secondary bronze obtained via the method of electroerosive dispersion followed by spark plasma sintering. The results of the comparative tribotechnical tests under the conditions of dry friction showed that the complex indicator of wear resistance—the wear factor (F)—under dry friction conditions, for mates after an electrospark coating method with sintered secondary bronze, was 1.94 less than for mates with a CuAl9Fe3 (CuAl8Fe3) coating. This confirmed the high tribotechnical properties and the effectiveness of using cheap secondary bronze in repair production in technologies for restoring and strengthening worn parts of machines operating under dry friction conditions.

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Section: Methodsmentioning

confidence: 99%

The Tribotechnical Properties of Electrosparks with a Secondary Bronze Coating

et al. 2022

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“…This can affect energy and raw material losses. The results of operational tests have shown that the application of wear-resistant electrospark coating on the working bodies can improve their wear resistance and reliability of the machines, and increase their service life [14].…”

Section: Introductionmentioning

confidence: 99%

Substantiation of the parameters of the feeder chamber conveyor of the combine harvester header

Кухмазов

Коновалов

2021

E3S Web Conf.

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The aim of the research was to check the possibility of using and the justification of design and operating parameters of the proposed chain-and-slat conveyor of the feeder house for harvesting grain crops on the example of wheat. The research methodology included the determination of grain losses and crushing behind the combine thresher when varying the slat pitch of the chain-and-slat transporter (153.6; 307.2 and 460.8 mm), the speed of moving these slats (2.0...5.0 m/s) and the speed of the combine (1.2...2.4 m/s). The researches made on chain-and-slat conveyor of the combine harvester’s feeder house have shown that it can be used in the harvester’s design. The rational values of design and mode parameters of chain-and-slat conveyor of the combine harvester’s feeder house have been justified by laboratory and field studies. At a pitch of stamped slats of the chain-and-slat conveyor of 307.2 mm, a speed of chain-and-slat conveyor slats of 2.8...3.6 m/s and a working speed of the combine of 2.2 m/s, grain losses behind the threshing machine and grain crushing amount to less than one percent that meets the agricultural requirements.

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Evaluation of the wear resistance and resource hardened by electrospark machining of the cutting surfaces of the fingers of the headers of combine harvesters

Cited by 2 publications

References 7 publications

The Tribotechnical Properties of Electrosparks with a Secondary Bronze Coating

The Tribotechnical Properties of Electrosparks with a Secondary Bronze Coating

Substantiation of the parameters of the feeder chamber conveyor of the combine harvester header

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