FIELD: mining industry, possible use for predicting tribotechnical properties of lubricating materials for drill bit supports at the stage of laboratory testing.
SUBSTANCE: in the method for testing lubricating materials, destruction activation energy of metallic surface before and after application of lubricating material is estimated and difference ΔG of produced activation energy values is determined. Tests of lubricating materials are conducted in range of temperatures matching operational temperatures. Type and the degree to which lubricating materials influence the metallic surface are determined respectively on basis of sign and modulus of value ΔG: ΔG<0 indicates softening effect, ΔG>0 indicates reinforcing effect, and ΔG=0 indicates neutral effect of lubricating material under examination on the metallic surface.
EFFECT: possible estimation of influence of boundary layers of lubricating material in strength properties of metallic surfaces.
1 dwg
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