Study of wear mechanism of hard-alloy tools during machining of refractory alloys

Investigation into Performance of Multilayer Composite Nano-Structured Cr-CrN-(Cr0.35Ti0.40Al0.25)N Coating for Metal Cutting Tools

“…(WC + 12% TiC + 6% Co, Kirovgrad Carbide Plant, Russia); tool geometry: The rake angle Υ = −7 • ; the clearance angle α = 7 • ; the tool cutting edge inclination λ = 0; the nose radius R = 0.8 mm; The flank wear VB max = 0.4 mm was assumed as the failure criterion. Based on the data available [33][34][35], it could be predicted that at lower cutting speeds, the abrasive wear was essential and that predetermined the need to use a coating with the maximum hardness and wear resistance. As cutting speed increases, a temperature in the cutting zone rises and adhesive, oxidative, and diffusion components of the wear mechanism come to the fore.…”

X-ray Microanalysis of Sintered Nanocomposite Materials from Tungsten-containing Powders

“…In the first step of pressing the powder was placed in a flexible rubber mold and pre-compacted manually to a density 3,1847 g/cm 3 . Next samples were placed in the working chamber of press at 18 °C, the pressure was pumped to a desired value, and the sample was held at pressure for 2 minutes, after which the pressure was released to atmospheric pressure and compacted samples were removed from the rubber mold.…”

“…Currently, tungsten-containing alloys are widely used in industry. Solid carbide grade VK 8 is used for processing by cutting materials, processing of stainless steel, high-strength and heat resisting hard-processing steels and alloys, including titanium alloys; in order to equip mining tools, for metal processing without shavings, fast-wearing parts of machines, appliances and accessories; drawing, calibration and pressing bars and tubes from steel non-ferrous metals and their alloys; fast-wearing parts of machines, devices and measuring instruments, operating at low impact loads [1][2][3][4].…”

X-ray microanalysis of powders, obtained by electroerosion dispersion of the alloy W-Ni-Fe

“…W-Ni-Fe alloys have a number of very valuable properties, thanks to which they are effectively used in many areas of technology [1][2][3][4][5][6][7][8].…”