CUTTING TOOL Russian patent published in 2012 - IPC B26B9/00 C23C26/00 

FIELD: technological processes.

SUBSTANCE: invention relates to a cutting tool, in particular, to knives for cutting food products. A cutting tool (1) has a cutting section (13) of a cutting blade with coated surface (7) made of electrode material or a product of reaction of electrode material melted by pulse discharges induced between the cutting section (13) of the blade and the electrode in the engine oil and between the body of the blade and the coating the gradient metallic structure is formed with the depth from 5 micrometres to 30 micrometres. An electrode is a moulded product, moulded from powder of one of the metal or a mixture powder of metals, or the metals, metal compound or metal compounds, of the ceramic material or ceramic materials, heat-treated moulded product, which is a moulded product subjected to heat treatment. The moulded product contains at least one of Ti, Si, cubic BN, TiC, WC, SiC, Cr₃C₂, Al₂O₃, ZrC₂-Y, TiN and TiB.

EFFECT: cutting instrument is characterised by simplicity of manufacture, guaranteed sharpness and long-term preservation of the sharpness.

10 cl, 14 dwg