Surface finishing of hard layer with defined pore distribution, which is applied on sliding surface by thermal spraying, preferably arc spraying, comprises processing layer by machining, using cutting tool with a cutting edge

摘要

Surface finishing of hard layer (1) with defined pore distribution, which is applied on sliding surface by thermal spraying, preferably arc spraying, comprises processing the layer by machining, using a cutting tool with at least one cutting edge (6). The cutting parameters comprise at least one cutting material, a cutting edge micro- and macro-geometry. The cutting parameters are chosen such that a material separated by cutting, is detached from the surface and is diverted away. The pores are exposed without forming a cover ridge (4) and a predetermined roughness of the surface is achieved. Independent claims are also included for: (1) a cutting tool for surface finishing of the hard layer with a defined pore distribution, which is applied on the cylindrical sliding surface by thermal spraying, comprising at least one cutting edge, where the cutting parameters are selected for detaching and guiding a chip from the surface and exposing the pores without forming the cover ridge, and for achieving a predetermined surface roughness; and (2) a structured surface (1') of the hard layer with defined pore distribution, which is applied on a cylindrical sliding surface by thermal spraying, exhibiting a predetermined roughness, where the distributed pores defining in the hard layer is present in exposed form without cover ridges.