Abstract

The influence of thin-layer wear-resistant tool coatings on thermophysical processes in the contact zone during metal cutting are studied. Longitudinal turning of workpieces made of 45, 12Х18Н9Т steels and ВТ3-1 titanium alloy by carbide cutters with TiC, TiN, ZrN, TiN + ZrN and Cu coatings deposited by cathode-ion bombardment are experimentally studied. The antifriction properties of coatings, cutting forces, wear resistance of cutters, temperature in the processing zone and temperature gradients in cutting inserts with different coatings and without them were evaluated. It has been established that these coatings do not have antifriction properties and do not reduce cutting forces, but reduce the surface and bulk temperature of the tool material. Keywords: cutting, cutting tool, friction coefficient, cutting force, wear, temperature, coating, wear resistance. m_aliev62@mail.ru

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