METHOD OF MACHINING OF THE FRICTION BLOCK DETAIL WORKING SURFACE FOR GIVING TO IT Russian patent published in 2008 - IPC C23C28/00 

FIELD: mechanical engineering industry; other industries; methods of machining of the working surfaces of the friction blocks details for giving- to them the wear-resistant and antifriction properties.

SUBSTANCE: invention is pertaining to mechanical engineering and may be used at manufacture of the new and restoration of the worn-out blocks of the friction of different machines and mechanisms. The surface protecting coating is gained by its electric-spark alloying using the copper-based electrode. Grind the coating with removal of 10-30 % of the coating thickness, then the latter is passivated in the solution of oxidizer- and dried. On the worked surface apply the composition containing- the following components (in mass %): copper - 4-12, polytetrafluoroethylene - 2-8, glycol borate - 2-8, the soap plastic lubricant - the rest. The indicated - composition is periodically additionally applied in the operational mode of friction block. Before passivation the coating is rubbed with the stuff on the basis of copper at the pressure on the coating of 50-120 MPa, at the staff motion speed on the working surface of 0.01-0.10 m/s, in the medium consisting of the mixture of glycerin with the copper chloride taken in the ratio from 97:3 up to 99:1 mass %. The given working of the detail surface allows to improve the antiwear and - antifriction properties of the block of friction.

EFFECT: invention ensures the increase of the antiwear and - antifriction properties of the block of friction.

3 cl, 1 tbl, 1 ex