Özet:

rticle the research results of defect layers formation on surface of high-speed sliding bearings made of new high-alloy composite materials from tool steels wastes and intended for printing machines have been presented. Such quality parameters of surface like cold-work strengthening and distortions of the 2-nd type are supplied by the result of interaction between force and temperature fields appearing on the top of diamond grain at fine diamond grinding of friction surfaces of sliding bearings were shown. It was proved, that final quality of surface depends on interaction of simultaneously arising processes of strengthening and tempering of working surfaces of sliding bearings at diamond grinding. It was defined, that the dependences of cold-work strengthening degree, its depth and distortions of the 2-nd type from composition of diamond tool, its graininess, bond type of diamond disc, parameters of grinding: using lubricating and cooling liquid, depth of grinding, rotation speed of the disc and line feed. The practical recommendations were formulated for choice of diamond grinding tools and cutting parameters, which meet the requirements of working surfaces quality of high-speed bearing for rotary printing machines.

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