Abstract
The results of studies of the wear-resistance of socket mills made of hard alloys in the processing of hard-to-process structural chromium steels are presented. The technology of hardening of cutting teeth with a wear-resistant coating obtained by the Physical Vapour Deposition method is considered. The influenceof the structure of the hardening composite coating based on titanium nitrides and carbonitrides on the mechanical characteristics and working capacity of the tool is shown. The nature of wear and brittle destruction of the working surfaces of the tool under intermittent cutting conditions and the influence of wear-resistant coatings on the thermal and stress state of the cutting wedge in the contact zone are investigated.
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