Operational Evaluation of Metalworking Tools and the Requirements for Them

A comparative evaluation of the work of abrasive, cutting, and die metalworking tools is made, and the requirements for their basic operational properties are formulated. Two main causes for the failure of metalworking tools have been revealed: their brittle and plastic fracture. The following methods of improving the working capacity of tools are proposed: (1) thermochemical treatment for producing superhard carbide coatings, (2) thermohydrochemical treatment for producing solid lubricating coatings, and (3) volume strengthening thermal cyclic treatment.