Abstract
Magnetic abrasive powders produced by mechanical mixing of abrasives (electrocorundum, silicon and vanadium carbides) and iron powders in the presence of surfactants (oleic acid) and binding organics (epoxy resin) are proposed. The content of surfactants and binding organics does not exceed 8–10%. The dependence of the magnetic properties of composite powder on its abrasive content is studied. The effect of the type of abrasive on the cutting ability of the magnetic abrasive material and on the surface roughness is determined. The roughness (Ra) reached on steel 45 (HRC = 44–46) with the use of Fe–50% SiC abrasive is 0.08–0.12 μm.
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