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Lubricating ability (friction coefficient) of liquid coolants in the "R6M5-steel-12Kh18AG18Sh-steel" friction couple: (1) LC-s; 

Lubricating ability (friction coefficient) of liquid coolants in the "R6M5-steel-12Kh18AG18Sh-steel" friction couple: (1) LC-s; 

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The thermal analysis of the samples of liquid coolants (LC) and their concentrates was carried out with the use of a derivatograph. A new LC obtained as a result of modification of sunflower oil with triethyleneamine is compared with an LC based on petroleum. The results of comparative analysis of their lubricating properties are presented. It is s...

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... estimated the lubricating abilities of 3% LC-s and LC-n emulsions in the "R6M5-high-speed-steel- 12Kh18AG18Sh steel" friction couple (Fig. 5) by the friction coefficient between the tool and the processed ma- terial. It was established that the friction moment M f and, hence, the friction coefficient f are lower in the case of lubrication by an emulsion based on the LC-s concentrate. The friction coefficient was numerically found according to the results of measurements of ...

Citations

... Thus, the stability of tool made of steel with Composition 1 is lower than the stability of the classical steel only in three cases, while the stability of tool made of steel with Composition 2 is lower than for R6М5 under two modes of treatment (however, the relative stability in these cases is not lower than 94%). The accumulated results are also in good agreement with the available data [10]. Thus, the R3АМ3F2B1Т1 economically alloyed steel can be recommended as a substitute for R6М5 steel. ...
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We studied the nature of formation of eutectic carbides in economically alloyed high-speed steels after additional introduction of niobium and titanium. We analyzed the changes in the chemical composition of the matrix and carbides depending on the stages of heat treatment. It is shown that their operating properties are on a satisfactory level. The experimental steel is recommended as a substitute for the classical R6M5 steel.
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In this study, modern nitrogen steels used for the manufacture of rings for Honda engines (70CC, 90CC, CRF70F, XL70, XR70, C70, CT70, ATC70, CL70) as well as other transport tribotechnical units was investigated. Due to the present ecological situation in the world, new environmentally friendly lubricating fluids for nitrogen steels' tribotechnical units and surface treatments have been proposed. The results of tribotechnical tests are presented in the form of diagrams, graphs and step polynomials obtained by mathematically describing the changes in wear intensity when the load changes for different lubricating fluids. Friction pairs were compared with ShellHF-E 46 (synthetic lubricating fluid), ShellHF-R (biological origin) and lubricating and cooling liquids with 1%, 3% and 5% vegetable oil concentrations. In tribocoupling it was found that hydrogen diffuses into the metal because the tribodestruction of lubricating coolants plays an active role in the destruction of friction surfaces.