Carbide Tools with Nano-Dispersed Coating for High-Performance Cutting of Hard-to-Cut Materials

Abstract:

The problem of increasing performance of carbide too lin machining hard-to-machine materials has been studied. Composite material was developed comprising carbide with heat-resistant bond Co-Re, significantly increasing resistance of carbide to thermoplastic deformation, and nanodispersed multilayer composite coating, significantly reducing thermomechanical impact on cutting part of tool.Studies to find the performance of tool made of developed composite material in turning hardened steel40H and heat-resistant nickel alloy HN77TYUR have shown its superiority compared to commercial carbides with coatings of modern generation.Studies have found out practicability of using VRK-13 cobalt-rhenium carbides with reduced content of expensive rhenium from 9% (weight) Re to 6% (weight), and it is highly competitive by heat resistance with VRK-15 carbide and is significantly superior to it by its strength.Results of cutting properties research forultra-dispersed Re-added WC-Co-carbides with Ti-TiN-TiCrAlNnano-dispersed multilayer composite coating are presented at longitudinal turning of constructional steels and hard-to-machine alloys. It is shown that the combination of ultra-dispersedheat-resistant WC-(Co,Re)-carbides and wear-resistant Ti-TiN-TiCrAlN coatings increase cutting properties of tool in some times.

• Periodical: Advanced Materials Research (Volume 871)
• Pages: 164-170
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.871.164
• Online since: December 2013
• Authors: A.A. Vereschaka*, A.S. Vereschaka, A.I. Anikeev
• Keywords: Carbide Tool, Cobalt-Rhenium Carbides, Cutting Tool, Hard-to-Machine Materials, Nanoscale Multilayer Coating, Re-Added WC-Co-Cemented Carbides

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