METHOD OF PRODUCTION AND COMPOSITION OF LUBRICANT COMPOUND FOR WEAR-RESISTANT AND ANTIFRICTION PROPERTIES OF NEAR-SURFACE LAYERS OF RUBBING PARTS Russian patent published in 2009 - IPC C10M177/00 C10M125/00 

FIELD: chemistry.

SUBSTANCE: invention refers to mechanical engineering, specifically to lubricant compositions for friction units made of both iron-based and nonferrous-metal alloys, as well as to methods of producing these compositions. Method of producing lubricant composition for wear-resistant and antifriction properties of near-surface layers of rubbing parts involves as follows. Lubricant composition containing base lubricant and additive is introduced between rubbing surfaces of the parts. Additive is suspended liquid lubricant and suspended highly dispersed minerals. Herewith it is produced as follows. Collected natural minerals are preliminary milled with magnetic separation, added to liquid lubricant, disintegrated to mineral particle size not exceeding 1 micron. Produced mixture is settled, while suspension above the sediment is use as lubricant additive. Herewith collected natural minerals are taken in ratio as follows, wt %: serpentine (lizardite and chrysotile) - 80-87, chlorite 2-3, magnetite 1-2, amakinite 1-2, calcite 0.5-1, X-ray amorphous phase 9-12. Immediately before disintegration, liquid lubricant is added with fatty acid salts of soft metals and glycerine, forming with mineral particles while dispersing, colloidal solution. Dispersing is ensured with ultrasound. Additive composition, namely wt % of liquid lubricant, wt % of mineral particles, fatty acid salts of soft metals and glycerine, as well as percentage of additive in base is determined as follows. Triboengineering testings are performed with using the same structural materials and kinematic type, as used for real friction unit, for which developed lubricant composition is supposed to be used, and related version of lubricant composition. Herewith tested tribological conjunction is run in to gain load limit, thereafter unloaded stepwise with evaluating stationary friction coefficient at each step. Thereafter friction coefficient dependence on load is evaluated for each version of lubricant composition, as well as analysing this dependence for minimum friction coefficient and related load, "Роп". Version of composition providing maximum load "Роп" thereby determined is considered to be in service.

EFFECT: lower wear of friction units in 3-4 times, reduced friction loss in 3-4 times, thereby for higher efficiency of machinery and equipment, reduced lubricant consumption, increased interval between lubricating works.

2 cl, 2 tbl, 1 dwg