INFLUENCE OF DIAMOND BURNISHING ON THE STRUCTURE AND PROPERTIES OF THE SURFACE OF LASER CUTTING HIGH-ALLOY STEEL

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Authors

D.A. BARCHUKOV

Abstract

The results of studies of the microstructure, microhardness, microgeometry of the laser cut surface of deposited high-speed steel grade R9M4K8 after diamond burnishing are presented. It has been shown that the surface roughness of a laser cut is reduced by 3...4 times, which makes it possible to obtain a working surface without subsequent mechanical grinding. It is noted that diamond smoothing leads to microstructure refinement, increase of steel microhardness up to 9 700 ± 130 MPa.

Keywords

laser cutting, steel, diamond burnishing, roughness, microstructure, microhardness.