STUDY OF THE FEATURES OF THE WEAR OF A FRICTION PAIR OF A DRIVE WHEEL WITH A MOVER CATERPILLAR UNDER ABRASIVE CONDITIONS

Автор(и)

  • S Popov НУ "Запорізька політехніка"
  • S Shumykin НУ "Запорізька політехніка"

DOI:

https://doi.org/10.15588/1607-6885-2021-1-7

Ключові слова:

caterpillar mover1, drive wheel2, friction pairs3, wear factors4, wear mechanism5, abrasive particles6

Анотація

Purpose of work. The aim of this work is to study the features of the wear mechanism of the working surface of the drive wheel of a caterpillar mover.

Research methods. Macro and micro analysis of the friction surfaces of the drive wheel of a mover using optical instruments. Experimental determination of linear wear of a tooth of a wheel after certain periods of operation.

Conducting laboratory tests. Multicriteria tribosystem analysis.

Results obtained. The mechanism of abrasive wear is determined under the complex influence of both fixed and semi-fixed contact interaction of the tribosystem, which causes an increase in the wear rate of the part. The percentage composition of various real mechanisms of complex destruction of the surface of a friction pair of a wheel and a
caterpillar is established.

Scientific novelty. For the first time, the features of the metal-metal contact interaction mechanism were established in the presence of abrasive wear in specific operating conditions. The main factors of their range and the level of their variation in the studied devices of the friction pair are analyzed. The degree of joint influence of various
factors causing wear of the drive wheel of the caterpillar mover is determined.

Practical meaning. The results of the performed scientific work can be used to develop wear-resistant, economically alloyed materials with optimal physical and mechanical properties, structural phase state, as well as technology for hardening and repair restoration of the drive wheel of the device or other parts with similar operating conditions.

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Технології отримання та обробки конструкційних матеріалів