3. Experimental details
The subject of research were cutting inserts made of LCC with NMC developed for dry machining, high speed machining and machining of workpieces made of hardened steel and hard-to-machining alloys. Investigation of crystal-chemical properties of LCC with NMC was carried out using SEM microscope JSM-6700F with a prefix for energy-dispersive spectrometry (EMF) JED-2300F by JEOL company. Content and structure of compositions "carbide - ceramics", "coating - ceramics" were also investigated.
Experimental samples made of LCC cutting inserts (form SNUN with nose radius r = 0,8 mm) have been produced and divided into 2 groups, the first was used for researches of physical-mechanical and crystalchemical properties, the second - for cutting tests.
The cutting tools equipped with inserts made of LCC with NMC and standard cutting tool materials had following value of geometrical parameters of the tool cutting part: rake angle