Tests of low-temperature properties of rope lubricant

V.Y. Sholom, O.L. Kramer, V.P. Golovin, A.N. Abramov, R.F. Vagapov show affiliations and emails
Received 07 December 2020; Accepted 19 February 2021;
This paper is written in Russian
Citation: V.Y. Sholom, O.L. Kramer, V.P. Golovin, A.N. Abramov, R.F. Vagapov. Tests of low-temperature properties of rope lubricant. Lett. Mater., 2021, 11(2) 187-191
BibTex   https://doi.org/10.22226/2410-3535-2021-2-187-191


The use of such lubricant SM6 (L6) in the manufacture of rope increases the durability of the rope at positive temperatures in relation to the unsmained rope by 2.2 times, and at a temperature of 60 degrees C the durability of the rope, soaked in this lubricant, lower than the unsubstuded (dry) rope.The paper presents the results of a comparative analysis of methods for testing the low-temperature properties of rope lubricants. Studies have shown that the designation of the temperature range for the use of the rope must be carried out taking into account the low-temperature properties of the rope lubricant used in its manufacture, determined in accordance with GOST 20458-89. The use for these purposes of the instructions of GOST 11507-78 or EN 12593 : 2007, which are intended for testing the low-temperature properties of bitumen, can lead to a significant unjustified reduction in the service life of the rope, since the test method according to the European standard provides for static loading of the sample film applied to the steel plate during its bending, and according to the Russian state standard, shock loading of the sample is provided, which, according to the authors, is closer to the real operating conditions. It is shown that the maximum effect of increasing the wear resistance of the rope at low temperatures is given by the lubricants having the best low-temperature properties determined by the standard method, which is confirmed by the complete correlation of the comparative results of testing the low-temperature properties and wear resistance of the rope at low temperatures. The authors have experimentally confirmed that the highest wear resistance of the rope at low temperatures is provided by lubricants, which have the best low-temperature properties, determined in accordance with GOST 20458-89. It has been established that lubricants, which have unsatisfactory low-temperature properties, significantly reduce the service life of ropes that are operated at low temperatures, in some cases even with respect to an unlubricated rope. The authors suggest that at low temperatures the components of the lubricant crystallize, the resulting crystals play the role of abrasive elements contributing to accelerated abrasive wear of the wire surfaces.

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