Abstract
UDC 621.9.048.669.268
DOI https://doi.org/10.5281/zenodo.4045794
The analysis of the features formation of thick combination electrospark coatings (СESC) obtained on cylindrical 12Kh18N10T stainless steel samples is presented. The samples were carbonized by combined electrospark alloying (CЕSA) at the Elitron-52A installation and alumunized by electrospark alloying (ESA) at the mechanized installation EIL-9 at a discharge energy of Wp = 3.4 J. The coatings by T15K6 alloy electrodes were deposited on aluminized surfaces at Wp = 0.9 and 3.4 J. The roughness of СESC was reduced by rolling and coating a metal-polymer material (MPM) reinforced with a powder hard alloy VK6. A new technology of the restoration of parts such as revolution bodies has been proposed for practical applications. It made it possible to take СESC on 12Kh18N10T steel in the sequence: CЕSA → ESA Al → ESA T15K6 → MPM (reinforced by VK6), up to 1.5 mm thick, 100% continuity, microhardness ~10100–9500 MPa, and roughness Ra = 1.2 μm.
Keywords: combined electrospark alloyed coatings, metal-polymer material, structure, microhardness, roughness.