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<p>Wear is a process-dependent phenomenon which depends not only on the mating material properties but also on the process characteristics. The pin-on-disk machine has been widely accepted in wear factor measurement. The aim of the present work is to determine the effects of the magnetite particles on the wear factor of mating objects. The test conditions include: clean dry contact (DC), contaminated dry contact in the presence of the magnetite particles (DP) and the contaminated wet contact in the presence of magnetite particles and mineral oil (LP). The soft-steel pin is the target object which its weight drop is measured as the wear character. Testing variables are relative velocity (0.1, 0.5, 1&#xa0;m/s) and normal force (10, 20, 30&#xa0;N). Results showed that, in dry contact, the magnetite particles noticeably increase the wear factor. But the interesting finding was that, in the presence of magnetite particles, the lubrication did not have the clear positive role in decreasing the wear factor which describes the devastating consequences of lubricant contamination in machinery. Influences of the relative velocity and normal contact force on wear factor have also been presented.</p>

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Effects of Particle Contamination on the Wear in Dry and Lubricated Contact

  • 期刊论文

  • 发表日期：

    2025年10月4日

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  • M. Akhondizadeh,
  • M. Masoumi,
  • M. Yahyavian

摘要

Wear is a process-dependent phenomenon which depends not only on the mating material properties but also on the process characteristics. The pin-on-disk machine has been widely accepted in wear factor measurement. The aim of the present work is to determine the effects of the magnetite particles on the wear factor of mating objects. The test conditions include: clean dry contact (DC), contaminated dry contact in the presence of the magnetite particles (DP) and the contaminated wet contact in the presence of magnetite particles and mineral oil (LP). The soft-steel pin is the target object which its weight drop is measured as the wear character. Testing variables are relative velocity (0.1, 0.5, 1 m/s) and normal force (10, 20, 30 N). Results showed that, in dry contact, the magnetite particles noticeably increase the wear factor. But the interesting finding was that, in the presence of magnetite particles, the lubrication did not have the clear positive role in decreasing the wear factor which describes the devastating consequences of lubricant contamination in machinery. Influences of the relative velocity and normal contact force on wear factor have also been presented.