OBRABOTKAMETALLOV Vol. 23 No. 3 2021 MATERIAL SCIENCE EQUIPMENT. INSTRUMENTS 7 1 5 Ta b l e 3 Engraver Specifications Name Meaning Supply voltage, V 220 Frequency, Hz 50 Power consumption, W 160 Rotation speed, rpm 15,000‑35,000 Collet diameter, mm 2.4; 3.2 Weight, kg 2.1 For mounting the abrasive head, a collet chuck, modified for combined processing, is used. Special equipment is used to mount the processed sample; this equipment allows for cross-feed of the sample. The working area of the installation is shown in Fig. 4. Fig. 4. External view of the working area of the installation: 1 – upgraded collet chuck; 2 – electrolyte feed tube; 3 – sample being processed; 4 – sample basing and feed equipment; 5 – abrasive head The cartridge is isolated from the engraver and mounted on the slider of the feed motion drive. Aflexible shaft transmits the primary motion from the engraver to the chuck. Specially designed tooling, isolated from the main body of the device, is used to position the processed experimental sample and enable transverse feed (cutting depth t). The device used to study and simulate the electrochemical grinding process is shown in Fig. 5. Results and Discussion Empirical studies were conducted using the designed device to determine the effect of mechanical cutting modes on the surface roughness of a part sample made of corrosion-resistant 0.12C-18Cr-10Ni-Ti steel. Electrical modes and experimental conditions for studying the electrochemical grinding process were selected based on prior experiments [32]. These included a voltage of 12 V at the process current source, a n etching current density of 1.5 A/cm², and a water-based electrolyte (NaNO₃ – 3 %, NaNO₂ – 1 %, Na₂CO₃ – 0.5 %).
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