The Effect of Rheological Parameters on the Tribotechnical Characteristics of Modified I-40A Oil

Resumo

The tribotechnical characteristics of additives in compositions of modified I-40A oil with antifriction dopes in an optimal concentration (2%) have been investigated. Combined laboratory tests have been performed on an SMTs-2 friction machine to determine the optimal lubricity value and changes in the coefficient of friction. Tests have been carried under start–stop conditions under maximal contact stresses of about σ_max = 550 and 680 MPa. It has been shown that the tribotechnical properties of I-40A oil improve in the presence of sulfur and phosphorus in the dopes.