V. I. Lavrinenko, V. G. Poltoratskyi, O. O. Pasichnyi, V. Yu. Solod
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Performance Indicators of Grinding Tools with Cubic Boron Nitride Grains with Combined Wear-Resistant Coatings
We investigated the effect of surface coatings on cubic boron nitride (cBN) grains regarding tool wear resistance and processing efficiency. At a low processing rate (50 mm3/min), the wear resistance enhancement factor was 1.66 for the B2O3 + CeO2 coating. Conversely, at a higher processing rate (200 mm3/min), the wear resistance enhancement factor decreased to 1.13 for the B2O3 + B4C coating. The study demonstrated that under these processing conditions, surface coating of cBN grains with a combination of oxide and carbide (B2O3 + SiC) is preferable. This preference is based on improved grinding wheel wear resistance and reduced surface roughness (Ra) of the machined surface. Furthermore, at increased grinding efficiency, any coating on cBN grain surfaces decreases the t50 parameter, thereby decreasing the holding capacity of the rough surface generated during grinding with such wheels.
期刊介绍：
Journal of Superhard Materials presents up-to-date results of basic and applied research on production, properties, and applications of superhard materials and related tools. It publishes the results of fundamental research on physicochemical processes of forming and growth of single-crystal, polycrystalline, and dispersed materials, diamond and diamond-like films; developments of methods for spontaneous and controlled synthesis of superhard materials and methods for static, explosive and epitaxial synthesis. The focus of the journal is large single crystals of synthetic diamonds; elite grinding powders and micron powders of synthetic diamonds and cubic boron nitride; polycrystalline and composite superhard materials based on diamond and cubic boron nitride; diamond and carbide tools for highly efficient metal-working, boring, stone-working, coal mining and geological exploration; articles of ceramic; polishing pastes for high-precision optics; precision lathes for diamond turning; technologies of precise machining of metals, glass, and ceramics. The journal covers all fundamental and technological aspects of synthesis, characterization, properties, devices and applications of these materials. The journal welcomes manuscripts from all countries in the English language.
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